Aalborg DPM07, DPM14, DPM44, DPM47, DPM54, DPM57, DPM77 Operating Manual
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Technical Data Sheet No.
TD-DPM520 Date of Issue: May 2020
OPERATING MANUAL
Aalborg
£
DPM
Intelligent Digital Mass Flow Meters
Aalborg® is a registered trademark of Aalborg Instruments & Controls.
NOTE: Aalborg reserves therighttochangedesigns anddimensions atits sole discretion at any time without notice. For certified dimensions, please contact Aalborg.
TABLE OF CONTENTS
Unpacking the DPM Mass Flow Meter.......................................
1.1 Inspect Package for External Damage..................................
1.2 Unpack the Mass Flow Meter................................................
1.3 Returning Material for Repair................................................
2. Installation.................................................................................
2.1 Safety Instructions..................................................................
2.2 Primary Gas Connections......................................................
3. Electrical Connections...............................................................
3.1 Power Supply Connections....................................................
3.2 Output Signals Connections..................................................
3.3 Digital Communication Interface Connections.....................
4. Principle of Operation..............................................................1
5. Specifications............................................................................1
5.1 CE Compliance....................................................................1
5.2 DPM Accessories.................................................................1
6. Operating Instructions...............................................................1
6.1 Preparation and Power Up..................................................
6.2 Swamping Condition............................................................1
6.3 Meter Process Information (PI) Screens..............................1
6.4 Local User Interface Menu Structure...................................
6.4.1 Parameter Entry..............................................................2
6.4.2 Submenu “Change PP Password”..................................2
6.4.3 Submenu “Device Information”.......................................2
6.4.4 Submenu “Units of Measure”..........................................2
6.4.5 Submenu “User-Defined Units”.......................................2
6.4.6 Submenu “Select Gas”...................................................
6.4.7 Submenu “User-Defined Mixture”...................................
6.4.8 Submenu “Gas Flow Alarm”...........................................
6.4.9 Submenu “Gas Pressure Alarm”....................................
6.4.10 Submenu “Gas Temperature Alarm”............................
6.4.11 Totalizers Settings........................................................
6.4.12 Submenu “Pulse Output”..............................................
6.4.13 General Settings...........................................................
6.4.13.1 STP/NTP Conditions................................................
6.4.13.2 Display and Process Information (PI) Screens........
6.4.13.3 Submenu “Communication Port Settings”...............
1
6.4.13.4 Submenu “Modbus Interface” (optional)..................
6.4.13.5 Relay Assignment....................................................5
6.4.13.6 Analog Output Configuration...................................
6.4.13.7 Status LED Settings................................................
6.4.13.8 Signal Conditioner Settings.....................................
6.4.14 Sensor Zero Calibration................................................
6.4.14.1 DP Sensor Zero Calibration.....................................5
6.4.14.2 Start AP Auto Tare...................................................5
6.4.15 Submenu “Alarms and Diagnostic”...............................
6.4.15.1 Alarm Event Register...............................................
6.4.15.2 Diagnostic Events Register......................................6
6.4.15.3 Sensors ADC Reading (read only)..........................6
6.4.15.4 Temperature Sensors Diagnostic (read only)..........6
6.4.15.5 Analog Output & PO Queue Diagnostic (read only)
6.4.15.6 Reference Voltage & DSP Calculation Diagnostic .....
6.5 Multi-Functional Push-Button Operation.............................
7 Maintenance.............................................................................
7.1 General................................................................................
7.2 Cleaning................................................................................
8 Recalibration.............................................................................
9 RS-235/RS-485 Software Interface Commands.......................
9.1 General................................................................................
9.2 Commands Structure...........................................................
10 Troubleshooting......................................................................
10.1 Common Conditions..........................................................
10.2 Troubleshooting Guide......................................................
10.3 Technical Assistance.......................................................
Appendix I: Component Diagram..............................................
Appendix II: Dimensional Drawings...........................................
Appendix III: Warranty................................................................
Appendix IV: Index of Figures....................................................
Appendix V: Index of Tables......................................................10
2
1.
1.1
UNPACKING THE DPM MASS FLOW METER
Inspect Package for External Damage
YourDPM Mass Flow Meter was carefully packed in a sturdy cardboard carton, with anti-static cushioning materials to withstand shipping shock. Upon receipt, inspect the package for possible external damage. If the unopened package is damaged, contact the shipping companyimmediately to make a report.
1.2
Unpack the Mass Flow Meter
Openthecartoncarefullyfromthe topandinspect for anysignof concealedshipping damage. If there is any damage, in addition to contacting the shipping company, forward a copy of any damage report to your distributor or to Aalborgdirectly.
When unpacking the instrument, make sure that you have all the items indicated on the
Packing List. Promptly report any discrepancy.
1.3
Returning Material for Repair
Contact the customer service representative at your distributor, or at Aalborgif you purchased your Mass Flow Meter directly, to request a Return Authorization Number
(RAN). Equipment returned without a RAN will not be accepted.
Aalborg reserves the right to charge a fee to the customer for equipment returned under warranty claims if the instruments are found, when examined and tested, to be free of warrantied defects.
Shipping charges are borne by the customer. Meters returned collect will not be accepted.
It is mandatory that any equipment returned for service be purged of any hazardous contents including, but not limited to, toxic, infectious, corrosive or radioactive material. No work shall be performed on a returned product unless the customer submits a fully executed and signed SAFETY
CERTIFICATE. Contact the Service Manager at your distributor or at
Aalborg to obtain this form prior to returning the product.
2.
2.1
INSTALLATION
Safety Instructions
CAUTION : Aalborg warrantiesandall other direct or implied responsibilities of the manufacturer shall be voided ifusers failto follow allinstructions and procedures described in this manual.
CAUTION: LIFE SUPPORT APPLICATIONS: The DPM is not designed for use in life support applications where any malfunction of the device may cause personal injury. Customers employing this device for use in such applications do so at their own risk and agree to be fully responsible for any damages resulting from improper use or sale.
3
CAUTION: Some of the IC devices used in the DPM are static-sensitive and
may be damaged by improper handling. When adjusting or servicing the device, always wear a grounded wrist strap to prevent inadvertent damage to the integral solid-state circuitry.
2.2
Primary Gas Connections
The DFM Mass Flow Meter will not operate with liquids. Only clean, non corrosive gases may be introduced into the instrument. If gases are contaminated, theymustbefilteredto preventtheintroductionofimpedimentstothesensor.
CAUTION: DPM meters should not be used for monitoring oxygen gas unless
specifically cleaned and prepared for such an application.
For more information, contact your distributor or Aalborg.
The DPMMassFlowMetercanbemountedinanyposition.It isnotrequiredtomaintain straight runs of pipe upstream or downstream of the meter.
It is preferable to install the meter in a stable environment, free of frequent and sudden temperature changes, high moisture, and drafts.
Prior to connecting gas lines, inspect all parts of the piping system, including ferrules and other fittings, for dust or other contaminants. Do not use pipe grease or sealant on process connections as they can contaminate narrow laminar flow elements that may cause permanent damage to the meter.
When connecting the gas system to be monitored, be sure to observe the direction of gas flow as indicated by the arrow on the front of the meter.
Insert tubing into the compression fittings until the ends of the properly sized tubing sit flush against the shoulders of the fittings.
Compression fittings are to be tightened 1¼ turns according to the manufacturer's instructions.
Avoid overtightening which may seriously damage the compression fitting.
Pressure Requirements
Maximum operating line(common mode)pressure for "BREEZE" Low Differential Pressure
DPM04/14/24/34/44/54 series flow meters is 50PSIG (3.44 Bar). If the installation line pressure is more than 50 PSIG(3.44 Bar), a pressure regulator must be installed upstream of the flow meter to bring pressure down to 50PSIG (3.44 Bar).
Maximum operating line (common mode)pressure for DPM07/17/37/47/57/67/77 series flow meters is 120PSIG (8.3 Bar). If the installation line pressure is more than 120 PSIG (8.3
Bar), a pressure regulator must be installed upstream of the flow meter to bring pressure down to 120 PSIG (8.3 Bar)
4
CAUTION: For DPM07/17/37/47/57/67/77 series flow meters, the maximum pressure in the gas line must not exceed 120PSIG (8.3bar).
Applying pressure above 120 PSIG (8.3 bar) will cause permanent damage to the differential pressure sensor.
CAUTION: For DPM04/14/24/34/44/54 "BREEZE" Low Differential Pressure series flow meters, the maximum pressure in the gas line must not exceed
50PSIG (3.44bar). Applying pressure above 50 PSIG (3.44 bar) will cause permanent damage to the differential pressure sensor.
CAUTION: Do not apply upstream – downstream differential pressure exceeding 9.75 PSID to "BREEZE" Low Differential Pressure
DPM04/14/24/34/44/54 series flow meters. Exposure to higher differential pressures may cause permanent damage to the product.
Normally high common mode pressure (within 50 PSIG) will not damage the differential pressure sensor, but pressure transients (momentary pressure variations) on upstream or downstream ports can result in permanent sensor damage to the product.
Avoid instantaneous application of high pressure from quick on/off solenoid valves upstream or downstream of the meter.
CAUTION: Do not apply upstream – downstream differential pressure exceeding 12 PSID to DPM07/17/37/47/57 series flow meters. Exposure to higher differential pressures may cause permanent damage to the product.
Normally high common mode pressure (within 120 PSIG) will not damage the differential pressure sensor, but pressure transients
(momentary pressure variations) on upstream or downstream ports can result in permanent sensor damage to the product.
Avoid instantaneous application of high pressure from quick on/off solenoid valves upstream or downstream of the meter.
CAUTION: Theusershallinstalltheinstrumentonlyinprocesslinesthat meetthe DPM meter’s pressure and temperature ratings. A margin of safety should be provided if spikes and surges exist in the process. Proper pressurereliefvalvesandburstplatesshouldbeinstalledinhigh pressure applications.
CAUTION: To avoid obstructions and contamination in the sensor tube and the narrow flow channels in the laminar flow element, the user should install the instrument in process lines that have clean gases. Upstream particulate filters with maximum particulate size
20 P are recommended for all applications.
DPM transducer ports are equipped with 10-32 female thread ( DPM04/07 ), 1/8" NPT female thread (DPM 14/ 17/37), 1/4" NPT female thread DPM24/34/47, 1/2" NPT female thread (DPM44/57) and 3/4" NPT female thread (DPM54/67/77). DPM24/34/47, 1/2"
NPT female thread (DPM44/57) and 3/4" NPT female thread (DPM54/67/77).
5
3.
ELECTRICAL CONNECTIONS
DPMisequippedwithan 8 pin-MiniDINpower,analog/relayoutput, communication interface connector.
Table I explains the pin designations. See
Figure 1 for a Pin Diagram .
TABLE I: 8-PIN DESIGNATIONS AND NOTES
PIN FUNCTION
1 Solid State SPST Relay NO
(normally open) contact #1
2 Solid State SPST Relay NO
(normally open) contact #2
3 RS-232 RX / RS-485 (–)
Communication Interface input
4 Analog (0-5Vdc,0-10Vdc,4-20 mA) Output reference (-)
5 RS-232 TX / RS-485(+)
Communication Interface input
6 Analog (0-5Vdc, 0-10Vdc or
4-20 mA) Output (+)
7 Power supply, positive (+)
8 Powersupply,common (-)
RS-232 SignalGround
NOTE
Do not exceed SSR maximum voltage 48
AC peak/DC and maximum load current 400 mA.
Also accessible via Audio jack connector
Common (return) for pin 6 (0-5Vdc or
0-10 Vdc or 4-20 mA)
Also accessible via Audio jack connector
Output. Do not apply external voltage or any current source. Be sure to observe recommended load impedance.
Power input 9 – 26 Vdc.
Power input and RS-232 communication common.
CAUTION: 4-20 mA analog output requires at least 12 Vdc power.
FIGURE 1: DPM 8-PIN Mini-DIN CONNECTOR CONFIGURATION
6
CAUTION: Generally, "Mini-DIN" Connector numbering patterns are standardized. There are, however, some connectors with nonconforming patterns, so the numbering sequence on your mating connector may or may not coincide with that shown in our pin configuration above. It is imperative that you match the appropriate wires in accordance with the correct sequence regardless of the particular numbers displayed on the mating connector.
3.1
Power Supply Connections
The AC to DC power supply requirements for DPM transducers are 9 to 26 Vdc, with maximum load current at least 100 mA (unipolar power supply), and maximum ripple below 150 mV P-P.
Power can be applied to the DPM meter either through the power jack (see Figure
) or the 8-pin Mini-DIN connector (see Figure 1 ).
CAUTION: Never apply power simultaneously from both connectors, as this may damage the instrument.
3.2
DC Power (+) --------------- pin 7 of the 8-pin Mini-DIN connector
DC Power (-) --------------- pin 8 of the 8-pin Mini-DIN connector
CAUTION: Never apply power voltage above 26Vdc. Doing so may damage the DPM and/or cause faulty operation.
CAUTION: Make sure power is OFF when connecting or disconnecting any cables or wires to or from the system.
NOTE: The(+)and(-)powerinputsareeachprotectedbya300mAM(medium time-lag)reset fuse. If a shorting conditionorpolarityreversal occurs, the fuse will cut power to the flow transducer circuit: disconnect the power to the unit, correct the faulty condition, and reconnect the power. The fuse will reset once the faulty condition has been corrected.
Output Signals Connections
CAUTION: When connecting the load to the output terminals, do not exceed the rated values shown in the specifications (see Section 5 ).
Failure to do so might cause damage to this device. Be sure to check if the wiring and the polarity of the power supply are correct before turning the power ON. Wiring error may cause damage or faulty operation.
7
DPM series Mass Flow Meters are equipped with calibrated 0-5Vdc, 0-10Vdc or
4-20 mA output signals. This linear output signal represents 0-100% of the flow meter’s full scale range. The user may select the desired analog interface type using a local OLED/Joystick interface or via digital communication interface.
CAUTION: The 4-20 mA current loop output is self-powered (nonisolated, sourcing type). Do not connect an external voltage source
(for example, current loop powered systems) to the output signals.
For 0-5 VDC, 0-10 VDC or 4-20 mA output signal connection:
External load Plus (+) --------------------------- pin 6 of the 8-pin Mini-DIN connector
External load Minus (-)--------------------------- pin 4 of the 8-pin Mini-DIN connector
CAUTION: When connecting the load to the output terminals, always check actual analog output interface configuration. Connecting low impedance (< 5K ȍ ) loads to the 0-5Vdc or 0-10 Vdc output may cause damage to or faulty operation of the electronics circuitry.
NOTE: 4-20 mA analog output requires at least 12 Vdc power input.
CAUTION: When connecting the load to the output terminals, always check actual analog output interface configuration.
Connecting high impedance (> 500 ȍ ) loads to the 4-20 mA output may cause non linear or faulty operation of the electronics circuitry.
To eliminate the possibility of noise interference, it is recommended that you use a separate cable entry for the DC power, digital communication interface, and analog output interface signal lines.
3.3
Digital Communication Interface Connections
The digital interface operates via RS-232 or RS-485 (user-selected) and provides access to all applicable internal configuration parameters and data.
CAUTION: Before proceeding with communication interface connection, verify the meter’s actual communication interface type. For devices with OLED display, the interface type will be briefly (for about
2 seconds) displayed on the banner screen when power is applied. If your meter does not have a display, the communication interface type can be identified by briefly pressing the multi-function button and monitoring status LED response ( see Section 6.5).
8
Communication Settings for RS-232/RS-485 communication interface
The default baud rate is 9600 baud (user-selected; see Section 5 , Specifications).
Stop bit:
Data bits:
Parity:
Flow Control:
....................
1
....................
8
....................
None
....................
None
RS-232 Communication Interface Connection
Crossover connection must be established:
HOST PC RS-232 RX Meter (RS-232 TX)
(pin 2 on the host PC DB9 connector)------pin 3 (Ring) of the 3-pin stereo jack connector (TX+)
HOST PC RS-232 TX Meter (RS-232 RX)
(pin 3 on the host PC DB9 connector)------ pin 2 (Tip) of the 3-pin stereo jack connector (RX-)
HOST PC RS-232 SIGNAL GND Meter (Digital GND)
(pin 5 on the host PC DB9 connector)------pin 1 (Sleeve) of the 3-pin stereo jack connector
Each DPM ordered with RS-232 interface option is supplied with default crossover foot long communication cable (AALBORG P/N: CBL-A232) DB9 female to stereo 3.5 mm
Plug.
If custom length cable is required, it can be assembled using the connection diagram shown in Figure 2 .
9
RS-485 Communication Interface Connection
The RS-485 converter/adapter must be configured for: multidrop, 2-wire, half
). The transmitter circuit must be enabled by TD or
RTS (depending on which is available on the converter/adapter). Settings for the receiver circuit should follow the selection made for the transmitter circuit in order to eliminate echo.
RS-485 A line T(-) or R(-) ............. pin 2 on 3-pin Audio-connector, middle section or "tip" DPM (RX-), (WHITE wire)
RS-485 B line T(+) or R(+) ........... pin 3 on 3-pins Audio-connector, the
"ring" section DPM (TX+), (RED wire)
RS-485 GND (if available) ............ pin 1 on 3-pin Audio-connector, the
“sleeve” section DPM (GND), (Shield wire)
Each DPM ordered with RS-485 interface option is supplied with a default
3-foot length of communication cable (AALBORG P/N: CBL-A485) Stereo
3.5 mm plug to stripped wires.
If custom length cable is required, it can be assembled using the connection diagram shown in Figure 3 :
10
FIIG UR RSS-44885 CCO MM NIICCATTIIO RFFAACCE CCO NN NS
When the DPM device is set as the last device on the long RS-485 bus segment, the 120 ȍ bus termination resistor must be connected between the RS-485 (+) and (-) terminals close (< 6 feet) to this device.
NOTE: The DPM instrument offers an integrated switchable 120 ȍ
W ermination resistor between the RS-485 (+) and (-) pins. On instruments with a local display and joystick interface, the 120 ȍ termination resistor can be activated (enabled) using General
Settings / Communication Port / RS-485 Termination menu selection.
By default, the instrument is shipped from the factory with the RS-485
Termination mode set to Disabled.
11
4.
P RIIN CIIP LE O OP ER TIIO N
The DPM series flow meters integrate precision a differential pressure sensor which accurately measures pressure drop across the special restriction flow element (RFE). The geometry of the RFE is designed to ensure laminar flow in each branch within the entire range of operation of the DPM instrument.
According to principles of fluid dynamics, the volumetric flow rates of a gas in the laminar flow conduits are proportional to differential pressure across the restriction flow element. In addition, precision absolute pressure and temperature sensor readings are used to calculate mass flow rate using ideal gas laws.
The DPM flow meter supports multi-gas functionality which allows users on site to select the desired measured gas using local Display/Joystick interface or digital communication interface. See Tables X - XVIII which provide lists of supported gases.
The DPM flow meter can display flow rate in 43 different mass flow or 15 different volumetric flow engineering units. Flow meter parameters and functions can be programmed locally via optional OLED/Joystick interface or remotely via the RS-
232/RS-485 interface or optional Modbus RTU interface. DPM flow meters support various functions including two programmable flow totalizers; low, high or range flow; temperature and pressure alarms; automatic zero adjustment
(activated via local or digital communication interface); programmable solid state relay (SSR); programmable 0-5 Vdc, 0-10 Vdc or 4-20 mA analog outputs; userprogrammable pulse output (via SSR); and self-diagnostic alarms. Optional local
OLED readout with adjusta EOH brightness level provides mass and volumetric flow rate, total volume reading in currently selected engineering units, and
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5.
S PE TIIO NS
FLOW MEDIUM: Please note that DPM Mass Flow Meters are designed to work only with cleangases, never any corrosive gas and never any liquid.
CALIBRATIONS: Performed at standard conditions (14.7 psia [101.4 kPa] and 70 °F [21.1
°C]) unless otherwise requested or stated.
ENVIRONMENTAL (PER IEC 664): Installation Level II; Pollution Degree II.
FLOW ACCURACY (INCLUDING LINEARITY): ±(0.5% RD + 0.2% FS) at calibration temperature and pressure.
REPEATABILITY: +0.15% of full scale.
FLOW TEMPERATURE COEFFICIENT: 0.05% of full scale/ °C or less.
FLOW PRESSURE COEFFICIENT: 0.01% of full scale/psi (6.895 kPa) or less.
FLOW RESPONSE TIME: default 10 ms (user-adjusted).
12
INSTRUMENT WARM-UP TIME: < 5 seconds.
MAXIMUM MEASURABLE FLOW RANGE: 133% Full Scale.
OPERATION RANGE/TURNDOWN RATIO: 0.5% to 100% Full Scale / 200:1.
MASS REFERENCE CONDITIONS (STP): 70°f & 14.696 PSIA (other references available on request).
MAXIMUM INTERNAL GAS PRESSURE (STATIC):
DPM07/17/37/47/57/67/77 : 120 PSIG.
" BREEZE" Low Differential Pressure models DPM04/14/24/34/44/54 : 50 PSIG
MAXIMUM INSTANTANEOUS DIFFERENTIAL PRESSURE ACROSS INLET AND OUTLET:
DPM07/17/37/47/57/67/77 : 12 PSID.
"BREEZE" Low Differential Pressure models DPM04/14/24/34/44/54 : 9.75 PSID.
PROOF PRESSURE:
DPM07/17/37/47/57/67/77 : 145 PSIG.
"BREEZE" Low Differential Pressure models DPM04/14/24/34/44/54 : 50 PSIG.
OPERATING TEMPERATURE: WRÛ&WRÛ)
MOUNTING ATTITUDE SENSITIVITY: None.
RELATIVE GAS HUMIDITY RANGE: 0 to 100% (Non-Condensing).
INGRESS PROTECTION: IP40.
OUTPUT SIGNALS: Linear 0-5 (3000 min. load impedance);
Linear 0-10 (5000 min. load impedance);
Linear 4-20mA(550 maximum loop resistance).
Maximum noise 10mV peak to peak (for 0-5/0-10 output).
TRANSDUCER INPUT POWER: 9 to 26 Vdc, 150 mV maximum peak to peak output noise. Power consumption: 100 mA maximum.
Circuit boards have built-in polarity reversal protection, and a 300mA resettable fuse provides power input protection.
DIGITAL OUTPUT SIGNALS: Standard RS-232 or RS-485 (user-selected).
Optional Modbus over isolated RS-485 transceiver .
WETTED MATERIALS: Stainless steel, Viton® O-rings (Buena-N®, Neoprene® or
Kalrez® O-rings are optional), high temperature polyamide, alumina ceramic, epoxy, silicone, glass, gold.
CAUTION: Aalborg
® makes no expressed or implied guarantees of corrosion resistance of mass flow meters as pertains to different flow media reacting with any components of the meters. It is solely the customer’s responsibility to select the model best suited for a particular gas, based on the fluid contacting (wetted) materials offered in the different models.
13
IN AAN O UTTLLEETT CCO NEECCTTIIO NSS:: DPM 04/ 07 10-32 female thread, DPM 14/ 17/37
1/8" NPT female thread, DPM 24/34/ 47 1/4" NPT female thread , DPM44/57 1/2" NPT female thread, DPM54/67/77 3/4" NPT female thread for user-supplied fittings.
DISPLAY: Optional 128 x 64 pixels graphic yellow OLED with Esc button and
Joystick interface. Simultaneously displays: Mass Flow, Totalizer Volume,
Pressure and Temperature or Mass Flow, Volumetric Flow, Pressure and
Temperature (user-selectable screens).
5..11
C E Com an e
EMC Compliance with 2004/108/EC as amended. CISPR11
Emission Standard: EN61000-6-3, Group 1, Class A
Immunity Standard: EN61000-6-1, IEC EN 61000-4-2, IEC EN 61000-4-3
MODEL
NO.
TABLE II: DPM FLOW RANGES
FULL SCALE MASS
FLOW RATE
PRESSURE DROP
AT FULL SCALE
FLOW (PSID)
STANDARD PRESSURE DROP [AIR]
PROCESS
CONNECTION
DPM07
DPM17
0.5 to 50 sml/min
51 sml/min to 20 sl/min
1.0
1.0
10-32 Female Thread
1/8" NPT Female
DPM37
DPM47
DPM57
21 sl/min to 50 sl/min
51 sl/min to 100 sl/min
101 sl/min to 250 sl/min
2.0
2.5
5.5
1/8" NPT Female
1/4" NPT Female
1/2" NPT Female
DPM67 251 sl/min 500 sl/min
DPM 7 7 501 sL/min to 1000 sL/min
DPM0
DPM1
DPM
DPM
4
4
24
34
DPM 44
DPM 54
5.5
7.0
DPM (BREEZE TM ) LOW PRESSURE DROP [AIR]
0.5 smL/min to 20 smL/min
21 smL/min to 2 sL/min
0.06
0.07
2.1 sL/min to 10 sL/min
10.1 sL/min to 20 sL/min
20.1 sL/min to 40 sL/min
40.1 sL/min to 100 sL/min
0.085
0.3
0.15
0.25
3/4" NPT Female
3/4" NPT Female
10-32 Female Thread
1/8" NPT Female
1/4" NPT Female
1/4" NPT Female
1/2" NPT Female
3/4" NPT Female
5..11
DPM Accessories
M ODEL
N O .
DPM07 / 04
DPM07 / 04
DPM17 / 14
DPM17 / 14
DPM37 / 34
DPM24 / 34 / 47
DPM44 / 57
DPM54 / 67
DPM54 / 77
F ITTING
CODE
TABLE II I : DPM ACCESSORY'S
D ESCRIPTION
F1C5
F2C5
F2C2
F2C4
F ITTING S
10-32 Thread, 1/8" Tubing, Compression, 316 ss.
10-32 Thread, 1/8" Tubing, Compression, 316 ss.Nickel Plated Brass
1/8" NPT Thread, 1/8" tubing, Compression, 316 ss.
1/8" NPT Thread, 1/4" tubing, Compression, 316 ss.
F4C4 1/4" NPT Thread, 1/4" tubing, Compression, 316 ss.
F4C6 1/4" NPT Thread, 3/8" tubing, Compression, 316 ss.
F8C6
1210-1-12-316
1/2" NPT Thread, 3/8" tubing, Compression, 316 ss.
3/4" NPT Thread 3/4" tubing, Compression, 300 series ss.
1210-1-12-316 3/4" NPT Thread 3/4" tubing, Compression, 300 series ss.
14
PS-GFM-230EU-4
PS-GFM-240UK-2
Power Supply, 220 V / 24Vdc / Europe.
Power Supply 240 V / 12 Vdc / United Kingdom.
M ODEL NO.
PS-GFM-110NA-2
PS-GFM-110NA-4
PS-GFM-230EU-2
PS-GFM-230EU-4
PS-GFM-240UK-2
POWER SUPPLIES
D ESCRIPTION
Power Supply, 110 V / 12 Vdc / North America.
Power Supply, 110 V / 24 Vdc / North America.
Power Supply, 220 V / 12 Vdc / Europe.
Power Supply, 220 V / 24Vdc / Europe.
Power Supply 240 V / 12 Vdc / United Kingdom.
5..2
D ces orriie
CBL-A232
CBL-A485
CABLES
Communication Cable for DPM with RS-232 Interface FT
3.5mm stereo audio connector with 3-wire to 9-pin female
D-connector (included with each DPM).
Communication Cable for DPM with RS-485 Interface 3 FT
3.5mm stereo audio connector with 3-wire to stripped ends.
CBL-8MINIDIN-3 Shielded cable 8-pin Min-DIN with stripped ends 3 feet long
CBL-8MINIDIN-12 Shielded cable 8-pin Min-DIN with stripped ends 12 feet long
USB-RS-232
USB-RS-485
COMMUNICATION PORT ACCESSORIES
USB to RS-232 converter
USB to RS-485 converter
MODBUS INTERFACE ACCESSORIES
ECS803-1
TDG1026-8C
RJ45 shielded Y-adapter (Passive TAP).
RJ45 Modular Coupler.
MOD27T
JMOD4S-1
TRD815BL-2
RJ45 Line Terminator (100 ȍ 0.25 W).
RJ45 Splitter fully shielded (5xRJ45, 1 input 4 outputs).
Category 5E Patch Twisted Pair Cable, RJ45 / RJ45, Blue 2.0 feet.
TRD815BL-10 Category 5E Patch Twisted Pair Cable, RJ45 / RJ45, Blue 10.0 feet.
TRD815BL-25 Category 5E Patch Twisted Pair Cable, RJ45 / RJ45, Blue 25.0 feet.
TRD815BL-10 Category 5E Patch Twisted Pair Cable, RJ45 / RJ45, Blue 10.0 feet.
TRD815BL-25 Category 5E Patch Twisted Pair Cable, RJ45 / RJ45, Blue 25.0 feet
15
DPM 07/17
DPM 47
DPM 57
DPM 67
DPM 77
DPM0 4
DPM1 4
DPM 24
DPM 34
DPM 44
DPM 54
TABLE IV: PRESSURE DROPS
20
[m m H
2
O]
MU M PPR REE D
[ppssiidd]
STANDARD PRESSURE DROP [AIR ] up to 10 703 1.0
703 1.0
30
40
50
60
1406
1406
1406
1757
2.0
2.0
2.0
2.5
100
200
500
1757
TBD
TBD
2.5
TBD
TBD
1000
20
40
TBD
2 10.9
105.5
TBD
DPM (BREEZE) LOW PRESSURE DROP [AIR]
0.02
42.2
0.0
6
2
10
49.2
59.8
0.07
0.085
0.3
0.15
100 1 75.8
0.25
[kkPPaa]]
6.894
6.894
13.789
13.789
13.789
17.236
17.236
TBD
TBD
TBD
0.413
0.483
0.586
2 .068
1.034
1.724
TABLE V: APPROXIMATE WEIGHTS
DPM 04/ 07/ 14/ 17 flow meter
DPM
DPM
6.
34/
54/
37/ 44/ 47 flow meter
57 flow meter
DPM67 flow meter
DPM77 flow meter
O PE
WEEIIG HT
0.85 lbs. (0.4 kg)
1.15 lbs (0.52 kg)
3.5lbs (1.6kg)
4.5lbs (2.04kg)
5.2lbs (2.35kg)
TIIN G IIN RU TIIO S
WEEIIG HTT
2.55 lbs. (1.2 kg)
3.0 lbs (1.36 kg)
5.1lbs (2.32kg)
6.7lbs (3.04kg)
8.75lbs (3.97kg)
6..11
P ep arra on a nd P er U p
Now that the Mass Flow Meter has been correctly installed and thoroughly tested as described in Section 2 , make sure the flow source is OFF.Initially, after the power is first turned on, the Banner Screen is shown for 2 seconds (see Figure 4 ), then device firmware and EEPROM database revisions will be displayed on the first line, communication interface type and hexadecimal address value on the second line,
Communication Port baud rate on the third line, and Modbushardware status and decimal addressvalueonthefourthline (see Figure 5 ). These are shownforanother 2 seconds.
Subsequently, the actual process information (PI) is displayed.
16
Fiigguurre 44:: DPPM
FFw TTbbll:: AA000011
CCO RSS22332 AAdddd:: 1111
99660000
M 1111
Fiigguurre 55 :: DPPM waarree aannd CCoom muunniiccaattiioon IInntteerffaaccee IInnffoormation SSccrreeeenn
Absolute Pressing
Reading
Temperature
Readin g
Current Mass Flow
Rate Reading
22.67 PSIA 27.7
0.00
C
Sml min
Current Unit of
Measure for
Mass Flow
T1: 14726.0 Sml
Totalizer#1
Units of
Measure
Totalizer #1 Reading
Figure 6: DPM Initial Process Information
NOTE: Actual content of the OLED screen may vary depending on the model and device configuration.
The main DPM flow meter screen shows current instrument Pressure, Temperature,
Mass Flow, and Totalizer Volume readings in previously selected units of measure.
NOTE: 5 seconds after the initial powering of the DPM flow meter, the status LED will emit a constant GREEN light (normal operation, ready to measure).
6..2
S am piin g C nd
If a flow of more than 133% the nominal maximum flow rate of the Mass Flow
Meter is taking place (displayed mass flow reading is flashing), a condition known as "swamping" may occur. Readings of a "swamped" meter cannot be assumed to be either accurate or linear. Flow must be restored to below 133% of maximum meter range. Once flow rates are lowered to within calibrated range, the swamping condition will end.
17
Prro ce PII)) s crree
Based on meter configuration, different parameters may be displayed in the
Process Information (PI) screen by moving the control joystick (see Figure
7 ) Up or Down (DN) . Process Information screens can be configured to be static or dynamic (see Section 6.4.13.2
“Display and Process Information
(PI) Screens”). Using PI Screen Mask settings, the user can enable
(unmask) or disable (mask) up to 6 different process information combinations.
UP
Press here for
Enter command
LEFT RIGHT
DOWN
FIGURE 7: JOYSTICK
In the Static Mode, moving the joystick Up pages through the PI screens in the forward direction, while moving the joystick DN pages through the PI screens in the reverse direction. When the last PI screen is reached, the firmware “wraps around” and scrolls to the initial PI screen once again.
In the Dynamic Display Mode, the firmware initiates automatic screen sequencing with user-adjusted screen Cycle Time (see Section 6.4.13.2
“Display and Process Information (PI) Screens”). When the last PI screen is reached, the firmware “wraps around” and scrolls to the initial PI screen once again.
18
222..7777
PSIA 255..7
C
0..000
T11:: 144772266..00
mll miinn
S
ml
PI Screen #1 (Pressure, Temperature,
Mass Flow Rate, Totalizer #1)
222..7777
PSIA
T22::
0..000
0..00
255..5
C mll miinn
S
ml
PI Screen #2 (Pressure, Temperature,
Mass Flow Rate, Totalizer #2)
Com. Interface type and device address
Analog Interface Type
Flow, Pressure,
Temperature
Alarms Status
Totalizers Status
Alarm Events Status
Register
DP Sensor Raw Counts
AP Sensor Raw Counts
DP Sensor reading mBar
Temperature Sensor
Raw Counts
PSIA 222..7777
244..5
C
0..000
mll miinn
V:: 0..00 mll//m
PI Screen #3 (Pressure, Temperature,
Mass Flow Rate, Volumetric Flow Rate)
PI Screen #4 (Selected Gas, Instrument
Full Scale Range, Interface Information)
AAIIR
FFSS: 00..22000000
LL//m
Currently Selected Gas Name
Instrument Full Scale Range
PPO WEER m::D DD
1199..66 H
D 99001
AA::--44110066337
T: 226688335
88998
00..00000011
2244..8833CC
Modbus interface H/W status (Y, N)
PI Screen #5 (Events Notification screen)
Time elapsed from the power up event
Relay assignment
Pulse Output Status
Diagnostic Events Status Register
PI Screen #6 (Instrument Diagnostic)
DP Sensor Temperature Raw Counts
AP Sensor Temperature Raw Counts
DP sensor reading in PSID
TemperatureSensorReading(deg.C)
FIGURE 8: DPM PROCESS INFORMATION SCREENS
19
6..4
L al U se errffa ce M nu Sttrru urre
The diagram in Figure 13 gives a general overview of the standard top-level display menu structure (when running firmware version A001). The Esc push-button is used to toggle between the Process Mode (PI screens) and the Setup menus, and to return to upper menu level.
In order to move through the menu items, the user must move the joystick
UP and DN . When the last item in the menu is reached, the menu “wraps around” and scrolls back to the beginning of the menu items list. Similarly, when the first menu item is highlighted and the joystick is moved UP , the menu “wraps around” and scrolls down to the end of the menu item’s list. In order to select the desired menu item, the user must press the joystick down (this action is equivalent to the Enter button). To go back to upper menu level, the user must press the Esc button.
All process configuration parameter settings are password-protected. In order to access or change them, Program Protection (PP) should be disabled. Each time the device is powered up, the Program Protection is enabled automatically. By default, the device is shipped from the factory with the Program Protection (PP) password set to Zero (PP Disabled). If the
PP password is set to Zero (Disabled), entering a PP password is not required. A subsequent screen will appear and the Program Protection menu item will be selected:
PR OG M PPR OTTEECCTTIIO
DIISSAABBLLEED settttiinngg,, EEnnt ttoo SSaavvee seettttiinngg, EEssc ttoo EExxiitt
Fiigguurre 9: Program Protection Screen
Moving the joystick DN to select the Disabled option and then pushing the joystick ( ENT ) to save settings will disable program protection.
If the PP password is set to any value more than Zero, the firmware will prompt with “Enter Program Protection Password” (see Figure 10 ).
Enntteerr PPrrooggrraam PPrrootteeccttiioonn seettttiinngg, EEnnt ttoo SSaavvee seettttiinngg, EEssc ttoo EExxiitt
Figure 10: Program Protection Password Screen
The user must enter up to 3 digits for the program protection code, in order to be able to access password protected menus.
20
NOTE: By default, the device is shipped from the factory with the
Program Protection (PP) password set to Zero (PP Disabled).
Once the correct password is entered, the Program Protection is turned off until the unit is powered up again.
4..11 P arra er E nttrry
There are two methods of data entry: x Direct numerical entry.
x Tabular Input from a menu.
If the menu with direct numerical entry is selected, move the joystick UP or DN to increase or decrease digit value between 0-9. Move the joystick RIGHT or
LEFT to move the cursor to another digit position. When the desired value is entered, use joystick equivalent of an ENT button to accept (to be saved in the
EEPROM) the new value .
NOTE: During data entry, the input values are checked for acceptability. If data is not acceptable, it is rejected and a message is generated to indicate that the new data has not been accepted.
If the menu with tabular entry is selected, the available menu options can be set using the joystick UP and DN positions and are accepted by pressing the joystick equivalent of an ENT button.
Su bm nu “ Ch ng P P sw d”
In order to get access to “Change Program Protection (PP) Password” menu, Program Protection must be disabled. If PP password is set to Zero
(Disabled), entering PP Password is not required and PP can be disabled
from “Program Protection” menu (see Figure 9 ). If PP Password is set to
any value more than Zero, the firmware will prompt with “Enter Program
Protection Password” (see Figure 10 ). The user must enter a program
protection code (up to 3 digits). If the PP password is lost or forgotten, contact the factory or your distributor.
Once the “Change PP Password” menu is selected, the following screen will appear:
Figure 11: Change PP Password Screen
21
In order to protect device configuration parameters when changing the PP password, the old PP password must first be entered.
Onceoldandnewpasswordsareentered,thefirmwarewillprompt with a confirmation message (see Figure 12 ) that the new password has been saved: haass bbeeeenn ssaavveed
Figure 12 : PP Password Change Confirmation Screen
Su bm nu “ De attiio ”
This submenu contains information about the device’s main configuration parameters.
These items are informational only, not password-protected, and cannot be changed
(read only).
4 S ub nu “ Un off M ea urre
Use the “Units of Measure" Menu to navigate to Measuring Units settings for
Mass Flow, Volumetric Flow, Pressure, and Temperature readings. This option allows configuration of the flow meter with the desired units of measurement.
These are global settings and determine what appears on all Process
Information screens and in all data log records. Units should be selected to meet your particular metering needs. A total of 44 different mass-based engineering units (Standard, Normal and True Mass) are supported (see Table
VI). A total of 15 different volumetric flow rate units are supported (see Table
VII).
Supported Pressure units of measure are listed in Table VIII, and Supported
Temperature units of measure are listed in Table IX.
22
21
22
23
24
17
18
19
20
25
26
27
28
13
14
15
16
9
10
11
12
7
8
5
6
3
4
1
2
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
Number
TABLE VI: LIST OF SUPPORTED MASS FLOW UNITS OF MEASURE
Mass Flow Rate
Units
Totalizer Volume Units Description
%FS
SuL/min
SmL/sec
SmL/min
SmL/hr
SL/sec
SL/min
SL/hr
SL/day
Sm3/min
Sm3/hr
Sm3/day
Sf3/sec
Sf3/min
Sf3/hr
Sf3/day gr/sec gr/min gr/hr gr/day kg/min kg/hr kg/day lb/min lb/hr lb/day oz/sec oz/min
NuL/min
NmL/sec
NmL/min
NmL/hr
NL/sec
NL/min
NL/hr
NL/day
Nm3/min
Nm3/hr
Nm3/day
Nf3/sec
Nf3/min
Nf3/hr
Nf3/day
USER
STANDARD
%s
SuL
SmL
SmL
SmL
SL
SL
SL
SL
Sm3
Sm3
Sm3
Sf3
Sf3
Sf3
Sf3
TRUE MASS gr gr gr gr kg kg oz oz
NORMAL
NuL kg lb lb lb
NmL
NmL
NmL
NL
NL
NL
NL
Nm3
Nm3
Nm3
Nf3
Nf3
Nf3
Nf3
USER DEFINED
U
Percent of Full Scale
Microliters per minute
Milliliter per second
Milliliters per minute
Milliliter per hour
Liter per second
Liter per minute
Liter per hour
Liter per day
Cubic meter per minute
Cubic meter per hour
Cubic meter per day
Cubic feet per second
Cubic feet per minute
Cubic feet per hour
Cubic feet per day
Grams per second
Grams per minute
Grams per hour
Grams per day
Kilograms per minute
Kilograms per hour
Kilograms per day
Pounds per minute
Pounds per hour
Pounds per day
Ounce per second
Ounce per minute
Microliters per minute
Milliliter per second
Milliliters per minute
Milliliter per hour
Liter per second
Liter per minute
Liter per hour
Liter per day
Cubic meter per minute
Cubic meter per hour
Cubic meter per day
Cubic feet per second
Cubic feet per minute
Cubic feet per hour
Cubic feet per day
User Defined
23
Number
9
10
11
6
7
8
3
4
5
1
2
12
13
14
15
16
TABLE VII: LIST OF SUPPORTED VOLUMETRIC FLOW UNITS OF MEASURE
Flow Rate Units
%FS uL/min mL/sec mL/min mL/hr
L/sec
L/min
L/hr
L/day m3/min m3/hr m3/day f3/sec f3/min f3/hr f3/day
Totalizer Volume Units
L m3 m3
L
L
L
%s uL mL mL mL m3 f3 f3 f3 f3
Description
Percent of Full Scale
Microliters per minute
Milliliter per second
Milliliters per minute
Milliliter per hour
Liter per second
Liter per minute
Liter per hour
Liter per day
Cubic meter per minute
Cubic meter per hour
Cubic meter per day
Cubic feet per second
Cubic feet per minute
Cubic feet per hour
Cubic feet per day
TABLE VIII: LIST OF SUPPORTED ABSOLUTE PRESSURE UNITS OF MEASURE
Number Pressure Units Name
9
10
11
12
13
14
15
7
8
5
6
3
4
1
2
PSIA barA mbarA hPaA kPaA
MPaA atm g/cm2A kg/cmA inHgA mmHgA cmH2OA inH2OA
TorrA
%FS
Short Name psiA barA mbar hPaA kPaA
MPaA atm gcm2 kgc2 inHg mmHg cmH2 inH2 torr
%FS
Description
Pound per square inch bar
Millibar
Hecto Pascal
Kilo Pascal
Mega Pascal
Atmosphere
Gram-force per square centimeter
Kilogram-force per square centimeter
,QFKRIPHUFXU\>Û&@
Millimeter RIPHUFXU\>Û&@
&HQWLPHWHURIZDWHU>Û&@
,QFKRIZDWHU>Û&@
Torr
Percent of Full Scale
TABLE IX: LIST OF SUPPORTED TEMPERATURE UNITS OF MEASURE
Number Temperature Units Label
3
4
1
2
Û)
Û&
K
Û5
Description degree Fahrenheit degree Celsius
Kelvin degree Rankine
24
NOTE: Program the Measuring Units first because subsequent menus may be based on the units selected. Once Flow Unit of Measure is changed, the Totalizer’s Unit of Measure will be automatically updated.
5 “ Su en u U err--D efifin ed U s”
In addition to conventional flow units, user-defined flow engineering units may be selected. Use the “Engineering Units and K-Factor” menu to navigate to the “User-Defined Units” menu option. This option enables userdefined configuration of any engineering unit required for process measurement.
The following three parameters are available for this function: x UD Unit volume K-Factor (defined in Liters)UD Unit time base
(defined in Seconds) x UD Unit use density (units with or without density support)
Before using the User-Defined Unit, be sure the proper conversion factor of the new unit, with respect to one liter, is set. The default entry is 1.00 Liter.
Also, proper time-based values for User-Defined Units must be set.
Figure 13 explains by diagram the various upper level display menus.
25
Figure 1 3 DPM Upper Levels Menu Structure
6 S ub nu " Se ct G "
The currently active gas can be selected by the user via OLED/joystick or digital communication interface. The gas data are allocated in different gas groups (see Figure 14 below). The
“Recent Gases” group keeps up to 16 recently selected gases. The detailed list of the gases for each group is provided in Tables X through XVIII, beginning on the following page.
For example, to select Nitrogen, the user should navigate to “Select Gas” Ö “Standard Gases”, then highlight “Nitrogen” and press the joystick equivalent of an Ent button.
Recent Gases
Standard Gases
Bioreactor Gases
Breathing Gases
Chromatograpy Gases
Fuel Gases
Laser Gases
O2 Concentrator
Stack Gases
Welding Gases
User Defined Mixture
Figure 14: Selecting Gas Group
27
20
21
22
23
16
17
18
19
24
25
26
27
12
13
14
15
10
11
8
9
6
7
4
5
2
3
0
1
28
29
30
Gaass
TABLE X: Standard Pure Non-Corrosive Gases
Shhoorrtt
Ne
Kr
SF6
Xe
C2H2
C25
C10
C8
C2
C75
He75
He25
C2H6 n-C4H10 i-C4H10
C3H8
D2
H2
N2O
CH4
Air
Ar
CO2
N2
O2
He
CO
C2H4
A1025
Star29
P5
Air
Argon
Carbon Dioxide
Nitrogen
Oxygen
Helium
Carbon Monoxide
Ethylene
Ethane n-Butane i-Butane
Propane
Deuterium
Hydrogen
Nitrous Oxide
Methane
Neon
Krypton
Sulfur Hexafluoride
Xenon
Abbssoolluutte
Viissccoossiittyy
( μμ PPaa--ss))
18.259686
22.377244
14.743078
17.624584
Deennssiittyy g/l
1.2000185
0.99963453
1.6555318
0.99932392
1.8322844
1.1604245
0.99473012
0.99976728
20.3345
1.3261455
0.99930979
19.668342
0.16568373
1.0004913
17.475804
10.187017
9.2398038
7.3072193
7.4018705
8.0415054
12.473107
8.8198202
1.1604842
1.168818
1.255226
0.99959984
0.99401503
0.99208387
2.4852646
0.96854578
2.4755419
0.97234976
1.857567
0.98310908
0.16672796
0.083436355
1.0005847
1.0005991
14.654788
1.8332083
0.99430109
10.949931
0.66562262
0.99816159
30.847242
24.839148
15.042726
22.710043
Acetylene 10.334757
25% CO2 / 75% Ar 20.455223
0.83530908
3.4779701
6.121213
5.4674713
3.4606011
1.6988495
1.0004838
0.9978346
0.98816832
0.99450233
0.99244221
0.99859725
10% CO2 / 90% Ar 21.609367
8% CO2 / 92% Ar 21.762981
2% CO2 / 98% Ar 22.223694
75% CO2 / 25% Ar 16.611552
75% He / 25% Ar
25% He / 75% Ar
1.672811
1.6693503
1.6589828
1.7870162
0.99905731
0.9991131
0.99927304
0.99639528
23.052769
0.53762966
1.0005554
23.043143
1.2822075
1.0000347
90% He / 7.5%
Ar / 2.5% CO2
Stargon CS 90%
Ar/8%CO2/2%O2
95% Ar / 5% CH4
21.314678
21.730903
22.146573
0.31866435
1.6627585
1.6060633
1.0005383
0.99911456
0.99928305
28
48
49
50
51
44
45
46
47
52
53
54
40
41
42
43
36
37
38
39
Gaass
TABLE XI: Bioreactor Gases
Shhoorrtt
Bio-5M 5%CH4 / 95%CO2
Abbssoolluutte
Viissccoossiittyy
( μμ PPaa--ss))
14.653659
Deennssiittyy g/l
1.7701352
0.99498978
Bio-10M 10%CH4 / 90%CO2 14.559299
1.7147013
0.99523243
Bio-15M 15%CH4 / 85%CO2 14.459421
1.6564349
0.99544756
Bio-20M 20%CH4 / 80%CO2 14.353426
1.5978991
0.99567147
Bio-25M 25%CH4 / 75%CO2 14.24079
1.5394019
0.99588751
Bio-30M 30%CH4 / 70%CO2 14.120874
1.4809418
0.9960956
Bio-35M 35%CH4 / 65%CO2 13.992953
1.4225176
0.99629569
Bio-40M 40%CH4 / 60%CO2 13.856199
1.3641278
0.99648773
Bio-45M 45%CH4 / 55%CO2 13.709659
1.3057712
0.99667173
Bio-50M 50%CH4 / 50%CO2 13.55223
1.2474461
0.99684765
Bio-55M 55%CH4 / 45%CO2 13.382616
1.1891512
0.99701551
Bio-60M 60%CH4 / 40%CO2 13.1993
1.1308852
0.99717531
Bio-65M 65%CH4 / 35%CO2 13.000513
1.0726464
0.99732702
Bio-70M 70%CH4 / 30%CO2 12.784241
1.0144337
0.99747066
Bio-75M 75%CH4 / 25%CO2 12.548154
0.95624539
0.9976062
Bio-80M 80%CH4 / 20%CO2 12.289467
0.89808023
0.99773363
Bio-85M 85%CH4 / 15%CO2 12.004793
0.83993679
0.99785292
Bio-90M 90%CH4 / 10%CO2 11.690063
0.78181364
0.99796403
Bio-95M 95%CH4 / 5%CO2 11.340435
0.72370939
0.99806694
29
64
65
66
67
68
69
60
61
62
63
56
57
58
59
70
Gaass
Gaass
71
72
TABLE XII: Breathing Gases
Shhoorrtt Loonng
EAN-32
EAN-36
EAN-40
HeOx-20
HeOx-21
HeOx-30
HeOx-40
HeOx-50
HeOx-60
HeOx-80
HeOx-99
EA-40
EA-60
EA-80
Metabol
32%O2 / 68%N2
36%O2 / 64%N2
40%O2 / 60%N2
20%O2 / 80%He
21%O2 / 79%He
30%O2 / 70%He
40%O2 / 60%He
50%O2 / 50%He
60%O2 / 40%He
80%O2 / 20%He
99%O2 / 1%He
Enri Air-40%O2
Enri Air-60%O2
Enri Air-80%O2
Metabolic Exhalant
(16%O2 / 78.04%N2 /
5%CO2 / 0.96%Ar)
Abbssoolluutte
Viissccoossiittyy
( μμ PPaa--ss))
Deennssiittyy g / l
Compressibility
18.553594
1.2134468
0.99961365
18.665372
1.2200749
0.99959516
18.77622
1.2267031
0.9995768
21.160783 0.39742666
1.000575
21.164401 0.40901481
1.0005744
21.120337 0.51331687
1.0005531
20.99441
0.62923199
1.0005002
20.851246
0.7451824
1.0004169
20.714981 0.86118182
1.0002995
20.499515
1.0934087
0.99993193
20.338992
1.3144914
0.99934879
19.15564
1.2505528
0.99951725
19.56039
1.2757473
0.9994476
19.953017
1.3009447
0.99937862
18.04915
1.2250145
0.99952679
Shhoorrtt
P-5
P-10
TABLE XIII: Chromatography Gases
Daattaa ffoor SStaannddaarrdd CCoonnddiittiioonnss ((770 °°FF aannd 1144..669966
PSSIIAA)
5%CH4 / 95%Ar
10%CH4 / 90%Ar
Abbssoolluutte
Viissccoossiitty
( μμ PPaa--ss))
22.146573
21.899835
Deennssiittyy g / l
1.6060633
1.5565932
Compressibility
0.99928305
0.99924058
30
76
77
74
75
78
Gaass
81
82
83
84
79
80
85
TTABLE XIV: Fuel Gases
Shhoorrtt
SynG-1
SynG-2
SynG-3
SynG-4
NatG-1
NatG-2
NatG-3
Coal
Gas
Endo
HHO
HD-5
HD-10
40%H2 / 29%CO /
20%CO2 / 11%CH4
64%H2 / 28%CO /
1%CO2 / 7%CH4
70%H2 / 4%CO /
25%CO2 / 1%CH4
83%H2 / 14%CO /
3%CH4
93%CH4 / 3%C2H6 /
1%C3H8 / 2%N2 /
1%CO2
95%CH4 / 3%C2H6 /
1%N2 / 1%CO2
95.2CH4 / 2.5%C2H6 /
0.2%C3H8 /
0.1%n-C4H10 /
1.3%N2 / 0.7%CO2
50%H2 / 35%CH4 /
10%CO / 5%C2H4
75%H2 / 25%N2
66.67%H2 / 33.33%O2
LPG 96.2%C3H8 /
1.5%C2H6 /
0.4%C3H6 /
1.9%n-C4H10
LPG 85%C3H8 /
10%C3H6
/ 5%n-C4H10
Abbssoolluutte
Viissccoossiittyy
( μμ PPaa--ss))
15.253299
14.781416
14.725047
13.737274
Deennssiittyy g / l
0.80779626
0.44282577
0.5672004
0.25149803
0.99952272
1.0003283
0.99990018
1.0005186
11.020257
0.71638178
0.9979886
11.006305
0.69973554
0.99804196
10.99793
12.23411
0.47642496
0.9988977
13.712892
0.35247105
1.0005199
16.838285
0.49714469
1.0004234
8.0566953
1.8596915
0.98305588
8.060707
0.69890329
1.8793052
0.99804914
0.98275016
31
89
90
91
92
93
94
Gaass Shhoorrtt
LG-4.5
LG-6
LG-7
LG-9
HeNe-9
LG-9.4
TABLE XV: Laser Gases
Loonng
Abbssoolluutte
Viissccoossiittyy
( μμ PPaa--ss))
Deennssiittyy g / l
Compressibility
4.5%CO2 / 13.5%N2 /
82%He
19.875867
0.37436617
1.0005373
6%CO2 / 14%N2 / 80%He 19.810188
0.4041824
1.0005193
7%CO2 / 14%N2 / 79%He 19.76977
0.42074815
1.0005058
9%CO2 / 15%N2 / 76%He 19.644085
0.46382218
1.0004745
9%Ne / 91%He
9.4%CO2 / 19.25%N2 /
71.35%He
22.266969
0.22372402
1.0004795
19.488366
0.51269615
1.0004588
Gaass Shhoorrtt
99 OCG-89
100 OCG-93
101 OCG-95
TABLE XVI: O
2
Concentrator Gases
Loonng
89%O2 / 7%N2 / 4%Ar
93%O2 / 3%N2 / 4%Ar
95%O2 / 1%N2 / 4%Ar
Abssoolluuttee
Viissccoossiittyy
( μμ PPaa--ss))
Deennssiittyy g / l
Compressibility
20.276364
1.3277141 0.99934333
20.373369
1.334345 0.99932581
20.421571
1.3376605 0.99931705
Gaass
104
105
106
107
108
109
Shhoorrtt
FG-1
FG-2
FG-3
FG-4
FG-5
FG-6
TABLE XVII: Stack Gases
Daattaa ffoor SStaannddaarrdd CCoonnddiittiioonnss ((770 °°FF aannd 1144..669966
PPSSIIAA)
Loonng
Abbssoolluutte
Viissccoossiittyy
( μμ PPaa--ss))
Deennssiittyy g / l
2.5%O2 / 10.8%CO2 /
85%N2 / 1%Ar
2.9%O2 / 14%CO2 /
82.1%N2 / 1%Ar
Compressibility
17.553974 1.2415291
0.99938947
17.489167 1.2635492
0.99927301
3.7%O2 / 15%CO2 /
80.3%N2 / 1%Ar
7%O2 / 12%CO2 / 80%N2
/ 1%Ar
10%O2 / 9.5%CO2 /
79.5%N2 / 1%Ar
13%O2 / 7%CO2 / 79%N2
/ 1%Ar
17.484521 1.2715509
0.99923323
17.642257 1.2569936
0.99932823
17.781725 1.2452832
0.99940281
17.922258 1.2335784
0.99947428
32
Gaass
118
119
120
121
114
115
116
117
122
123
124
125
126
127
Shhoorrtt
C-2
C-8
C-10
C-15
C-20
C-25
C-50
C-75
He-25
He-50
He-75
He-90
A1025
Star29
2%CO2 / 98%Ar
8%CO2 / 92%Ar
10%CO2 / 90%Ar
15%CO2 / 85%Ar
20%CO2 / 80%Ar
25%CO2 / 75%Ar
50%CO2 / 50%Ar
75%CO2 / 25%Ar
25%He / 75%Ar
50%He / 50%Ar
75%He / 25%Ar
90%He / 10%Ar
90%He / 7.5%Ar /
2.5%CO2
Stargon CS 90%Ar /
8%CO2 / 2%O2
TABLE XVIII: Welding Gases
Abbssoolluutte
Viissccoossiittyy
( μμ PPaa--ss))
Deennssiittyy g / l
Compressibility
22.223694 1.6589828
0.99927304
21.762981 1.6693503
0.9991131
21.609367
1.672811
0.99905731
21.225138 1.6814739
0.99891226
20.840474 1.6901531
0.99875902
20.455223 1.6988495
0.99859725
18.525065 1.7426245
0.99764493
16.611552 1.7870162
0.99639528
23.043143 1.2822075
23.466653 0.90972133
1.0000347
1.0004058
23.052769 0.53762966
21.816616 0.31445794
1.0005554
1.0005487
21.314678 0.31866435
1.0005383
21.730903 1.6627585
0.99911456
6.4.7 Submenu “User-Defined Mixture”
Submenu “User-Defined Mixture” allows the user to create and save up to 20 custom gas mixtures. Each gas mixture may have from 2 to 5 gases from those listed in Tables X through XVIII.
Fiigguurre 115: : AAddd M Meennuu SSeelleeccttiioon
By default, the instrument has no preset mixtures in the memory, and there is room for 20 user-defined mixtures (see Figure 15 ). Press the joystick equivalent of an Ent button to assign a name to the new gas mixture (see
Figure 16 ). The flashing cursor with letter “A” will appear. Move the joystick
UP and DN to change letters and numbers. Once the desired letter (or number) is set, use the joystick RIGHT command to move the cursor to the next position. Use LEFT to toggle the letter case. Press the joystick equivalent of Ent to save the gas mixture name.
33
Ussee
I to CChhaannggee CCaassee
Figure 16: Assigning a Name to the Mixture
Once the gas mixture name is saved, the screen shown in Figure 17 will appear. To select the gas component for G1, press the joystick equivalent of an Ent button. As shown in Figure 18 , a screen with a list of gases will appear.
MyMix1 G:0 Tot: 0.00%
G1 0.00%
G2
G3
G4
G5
0.00%
0.00%
0.00%
0.00%
Å Save, Esc to Exit
Figure 17: Add Gas Component and Ratio
NOTE: Use the joystick Up and Down to select another component, and Right and Left to switch between Gas Name and Ratio entry.
G:AIR
Air
Ar Argon
CO
2
Carbon Dioxide
N2 Nitrogen
O2 Oxygen
He Helium
CO Carbon Monoxide
Figure 18: Selecting Gas Component
NOTE: Use the joystick Up and Down to highlight the required gas. Press the joystick equivalent of Enter to select a gas.
34
MyMix1 G:0 Tot:0.00%
G1 Ar 0.00%
G2
G3
G4
G5
0.00%
0.00%
0.00%
0.00%
I
Save, Esc to Exit
Figure 19: G1 Component with Selected Gas
Once the gas is selected for component G1, the screen shown in Figure 19 will appear. To select the ratio for component G1, press Right . The screen shown in the top of Figure 20 will appear. To start entering a ratio value in %, press the joystick equivalent of Enter . The G1 component will appear at the bottom of the screen, with a flashing cursor. The user can now enter the desired ratio value for this gas, as shown second screen in Figure 20 :
MyMix1 G:0 Tot: 0.00%
G1 Ar 0.00%
G2 0.00%
G3
G4
G5
0.00%
0.00%
0.00%
I
Save, Esc to Exit
Ent
MyMix1 G:0 Tot: 0.00%
G1 Ar 0.00%
G2
G3
G4
G5
1 Ar
0.00%
0.00%
0.00%
0.00%
10.00%
Figure 20: G1 Component with Highlighted Ratio Value
NOTE: Use the joystick Up and Down to change numerical value, and Left and Right to change cursor position. Once the required ratio value is entered, press the joystick equivalent of Enter to accept it.
35
MyMix1 G:0 Tot: 10.00%
G1 Ar 10.00%
G2
G3
0.00%
0.00%
G4 0.00%
G5 0.00%
I
Save, Esc to Exit
MyMix1 G:0 Tot: 22.00%
G1 Ar
G2 He
10.00%
12.00%
G3
G4
G5
0.00%
0.00%
I
Save,EsctoExit
0.00%
MyMix1 G:0 Tot: 10.00%
G1 Ar
G2He
10.00%
0.00%
G3
G4
G5
1 He
0.00%
0.00%
0.00%
12.00%
MyMix1 G:0 Tot:100.0%
G1 Ar
G2 He
10.00%
12.00%
G3 CO2
G4 C2H4
46.25%
31.75%
G5 0.00%
I
Save,EsctoExit
Figure 21: Mixture with 4 Components Ready to be Saved
Continue addingupto 5 gases, as requiredfor yourapplication. See Figure 21 for an example of a mixture of 4 components ready to be saved. The total mixture must be
100% to be accepted. An error message will appear if the user tries to save a mixture that does not total 100%. When it is ready, press Left to save the mixture. The instrument will prompt with a confirmation message (see Figure 22 ):
**************************
NEW MIXTURE
HAS BEEN SAVED
**************************
Press any key...
Figure 22: Mixture Saved Confirmation Message
As directed in the above screen, press any button on the joystick to move to the next screen. Now that the mixture has been saved, it will appear
in the “User-Defined Mixture” menu selection (see Figure 23 ):
36
MyMix1
Add Mixture: 19 Free
Figure 23: “User-Defined Mixture” Menu Selection with new MyMix1 Mixture
Any saved mixture can be edited by the user. In order to edit a saved mixture, highlight it using Up and Down and then pressing Left . The confirmation message shown in Figure 24 will appear. Select “YES” then press the joystick equivalent of Enter .
Edit MyMix1 Mixture?
NO
YES
Figure 24: ""EEddiit M Meennuu SSeelleeccttiioonn
In the edit mixture mode, the user can change the mixture name, any gas component name, and any ratio value.
8 S ub me nu “ Fllo w A arrm ”
The DPM provides the user with a flexible Alarm warning system that monitors the Fluid Flow for all conditions that fall outside configurable limits, as well as visual feedback for the user via the
OLED, status LED or an SSR output. The Flow Alarm has several attributes which may be configured by the user via OLED/joystick interface or digital communication interface. These attrributes control the conditions that cause the Alarm to occur and specify actions to be taken when the flow rate is outside the specified conditions.
Flow Alarm conditions become true when the current flow reading is equal to or higher or lower than the corresponding values of High and Low Flow Alarm levels. Alarm action can be assigned with a present Delay interval of 0 to 3600 seconds before activating the SSR output. In most applications, the user will want to have a brief delay (2-10 seconds) to qualify that the flow rate is really settled at a chosen level and has not spiked because of some interference. The
Latch Mode control feature allows SSR output to be latched on or to follow the corresponding
Alarm status.
37
The following settings are available for the Flow Alarm (see Figure 13 ):
a) Flow Alarm Mode (Tabular entry)
This function determines whether the Flow Alarm is Enabled or Disabled, the only two selections available. The default entry is Disabled. Alarm Mode selections can be set with the joystick UP and DN buttons, and are accepted by pressing the joystick equivalent of the
ENT button.
b) Low Flow Alarm (Numerical entry)
The limit of the required Low Flow Alarm value can be entered in increments of 0.1%, from 0 to 109.9% FS (Full Scale).
If a Low Alarm occurs, and SSR output is assigned to the Low Flow Alarm Event (see Section
6.4.13.5), the SSR output will be activated when the flow falls below the Low Flow Alarm value.
The Low Flow Alarm condition is also indicated on the corresponding Process Information screen by alternating every second between units of measure and the alert “Lo!” (meaning
Low).
NOTE: The value of the Low Flow Alarm must be less than the value of the High Flow Alarm.
c) High Flow Alarm (Numerical entry)
The limit of the required High Flow Alarm value can be entered in increments of 0.1%, from 0 to 110% FS (Full Scale). If a High Alarm occurs, and the SSR output is assigned to the High
Flow Alarm Event (see Section 6.4.
5), the SSR output will be activated when the flow reading exceeds the High Flow Alarm value.
The High Flow Alarm condition is also indicated on the corresponding Process Information screen by alternating every second between units of measure and the alert “Hi!” (meaning
High).
NOTE: The value of the High Flow Alarm must be greater than the value of the Low Flow Alarm.
d) Flow Alarm Action Delay (Numerical entry)
The Flow Alarm Action Delay is a time period in seconds that the Flow Rate value may remain above the High limit or below the Low limit before an Alarm condition is activated. Valid settings are in the range of 0 to 3600 seconds. The default value is 0: no delay.
38
e) Flow Alarm Power On Delay (Numerical entry)
Sometimes it is convenient to enable the Flow Alarm only after a specified power-up delay interval. The “Flow Alarm Power On Delay” option allows the user to set a specified time interval which must elapse from the moment of the device power-up event before the Flow
Alarm function will be activated. Valid settings are in the range of 0 to 3600 seconds. The default value is 0: no delay.
f) Flow Alarm Action Latch (Tabular entry)
The Flow Alarm Action Latch settings control the Latch features. If SSR output is assigned to the Flow Alarm event, in some cases the Flow Alarm Latch feature may be desirable.
The following settings are available: Enabled or Disabled. By default, the Flow Alarm is nonlatching, which means that the Alarm action is indicated only while the monitored Flow Rate value exceeds the specified conditions that have been set.
6.4.9 Submenu “Gas Pressure Alarm”
The DPM provides the user with a flexible Alarm system that monitors the Fluid
Pressure for conditions that fall outside configurable limits and provides visual feedback for the user via the OLED, status LED or an SSR output. The
Pressure Alarm has several attributes which may be configured by the user via the OLED/joystick interface or digital communication interface. These attributes control the conditions that cause the Alarm to occur and specify actions to be taken when the pressure reading is outside the specified conditions.
PressureAlarmconditionsbecometruewhenthecurrentpressurereadingisequalto, higher than or lower than the corresponding values of High and Low Pressure Alarm levels.
Alarm action can be assigned with apreset Delay Interval (0-3600 seconds) to activate the SSR output. The Latch Mode control feature allows SSR output to be latched on or followthe corresponding Alarm status.
The following settings are available for the Pressure Alarm (see Figure 13 ):
a) Pressure Alarm Mode (Tabular entry)
This function determines whether the Pressure Alarm is Enabled or Disabled, the two selections available. ThedefaultentryisDisabled. Alarm Mode selections can be set with the Joystick UP and DN buttons and are accepted by pressing the joystick equivalent of an ENT button.
39
b) Low Pressure Alarm (Numerical entry)
The limit of required Low Pressure Alarm value can be entered in currently selected pressure units, in increments of 0.1% of the pressure full scale range from 0.0 to 99.9
.
If a Low Alarm occurs, and SSR output is assigned to the Low Pressure Alarm event (see Section 6.4.13.5) the SSR output will be activated when the pressure is less than the Low Pressure Alarm value.
The Low Pressure Alarm condition is also indicated on the corresponding
Process Information Screen by alternating every second between units of measure and the alert "LOW!"
NOTE: The value of the Low Pressure Alarm must be less than the value of the High Pressure Alarm.
The limit of required High Pressure Alarm value can be entered in currently selected pressure units, in increments of 0.1% of the pressure sensor full scale range from 0.1 to 100%.
If a High Alarm occurs, and SSR output is assigned to the High Pressure
Alarm event (see Section 6.4.13.5), the SSR output will be activated when the pressure reading is more than the High Pressure Alarm value.
The High Pressure Alarm condition is also indicated on the corresponding
Process Information Screen by alternating every second between units of measure and the alert "HIGH!"
NOTE: The value of the High Pressure Alarm must be greater than the value of the Low Pressure Alarm.
The Pressure Alarm Action Delay is a time period in seconds that the
Pressure Reading value may remain above the High limit or below the Low limit before an Alarm condition is activated. Valid settings are in the range of 0 to 3600 seconds. The default value is 0: no delay.
e) PressureAlarmPowerOnDelay(Numericalentry)
Sometimes it is convenient to enable the Pressure Alarm only after a specified power-up delay interval. The “Pressure Alarm Power On Delay” option allows the user to set a specified time interval which must elapse from the moment of the device power-up event before the Pressure Alarm function will be activated. Valid settings are in the range of 0 to
40
3600 seconds. The default value is 0: no delay.
f) Pressure Alarm Action Latch (Tabular entry)
The Pressure Alarm Action Latch settings control the Latch features. If SSR output is assigned to the Pressure Alarm event, in some cases the Pressure Alarm Latch feature may be desirable.
The following settings are available: Enabled or Disabled. By default, the Pressure Alarm is non-latching, which means that the Alarm action is indicated only while the monitored
Pressure reading value exceeds the specified conditions that have been set.
4..110 S ub me nu " s Te mp arrm "
The DPM provides the user with a flexible Alarm system that monitors the Fluid
Temperature for conditions that fall outside configurable limits and provides visual feedback for the user via the OLED, status LED or an SSR output. The
Temperature Alarm has several attributes which may be configured by the user via the OLED/joystick interface or digital communication interface. These attributes control the conditions which cause the Alarm to occur and specify actions to be taken when the temperature reading rate is outside the specified conditions.
Temperature Alarm conditions become true when the current temperature reading is equal to, or higher or lower than, corresponding values of High and
Low Temperature Alarm levels.
Alarm action can be assigned with preset Delay Interval (0-3600 seconds) to activate the SSR output. The Latch Mode control feature allows SSR output to be latched on or follow the corresponding Alarm status.
Following settings are available for Temperature Alarm (see Figure 13 ):
a) Temperature Alarm Mode (Tabular entry)
ThisfunctiondetermineswhethertheTemperatureAlarmisEnabledorDisabled.
Two selectionsareavailable:EnabledorDisabled.ThedefaultentryisDisabled.
Alarm Mode selections can be set with the Joystick UP and DN buttons and are accepted by pressing the joystick equivalent of an ENT button.
b) Low Temperature Alarm (Numerical entry)
The limit for the Low Temperature Alarm value can be entered in currently selected temperature units, in increments of 0.1 degree within the range of
-20 °C to 69.9 °C.
If a Low Alarm occurs, and SSR output is assigned to the Low Temperature
Alarm event (see Section 6.4.13.5), the SSR output will be activated when the temperature is lower than the preset Low Temperature Alarm value.
41
The Low Temperature Alarm condition is also indicated on the corresponding Process Information Screen by alternating every second between units of measure and the “L” alert, meaning Low.
NOTE: The value of the Low Pressure Alarm must be less than the value of the High Pressure Alarm.
The limit of the required High Temperature Alarm value can be entered in currently selected units, in increments of 0.1 degree within the range of -19.9
°C to 70.0 °C. If a High Alarm occurs, and SSR output is assigned to the
High Temperature Alarm event (see Setion 6.4.13.5), the SSR output will be activated when the Temperature reading is greater than the High
Temperature Alarm value.
The High Temperature Alarm condition is also indicated on the corresponding
Proess Information Screen by alternating every second between units of measure and the “H” alert, meaning High.
NOTE: The value of the High Pressure Alarm must be greater than the value of the Low Pressure Alarm.
The Temperature Alarm Action Delay is a time period in seconds that the
Temperature reading value may remain above the High limit or below the
Low limit before an Alarm condition is activated. Valid settings are in the range of 0 to 3600 seconds. The default valus is 0: no delay.
Sometimes it is convenient to enable the Temperature Alarm only after a specified power-up delay interval. The “Temperature Alarm Power On Delay” option allows the user to set a specified time interval that will have to elapse from the device power-up event before the Temperature Alarm function will be activated. Valid settings are in the range of 0 to 3600 seconds. The default value is 0: no delay.
TThhe T eem aassssiiggnneedd ttoo tthhe T eem me ccaasseess tthhe T eem
42
Two settings are available: Disabled or Enabled. By default, the
Temperature Alarm is non-latching. This means that the Alarm Action is indicated only if the monitored Temperature reading exceeds the userspecified conditions.
alliiz errs S ettttiin s
The DPM provides the user with two independent Programmable Flow
Totalizers. The total volume (mass) of the flowing fluid is calculated by integrating the actual instantaneous fluid mass flow rate with respect to time.
Totalizer reading values are stored in the EEPROM and saved every second.
In the case of power interruption, the last saved Totalizer value will be loaded at the next power on cycle, so the Totalizer reading will not be lost. Use the
“Totalizer Menu” to navigate to the “Totalizer #1” or "Totalizer #2" menu options.
The following settings are available for Totalizer #1 and Totalizer #2 (see Figure
a) Totalizer Mode (Tabular entry)
This option determines whether Totalizer is Enabled or Disabled, the only two selections available.Thedefault entryisDisabled.TotalizerMode selectionscan besetwiththe joystick UP and DN buttonsandareacceptedbypressingthe joystick equivalent of an ENT button.
NOTE: Before enabling the Totalizer, ensure that all Totalizer settings are configured properly. Totalizer Start values must be entered in the currently active Volumetric or Mass flow engineering unit. The Totalizer will not totalize until the Process Flow Rate becomes equal to or greater than the
Totalizer Start value. Totalizer Event values must also be entered in currently active volume- or mass-based engineering units. If the Totalizer
Event (action) is not required at a preset total volume feature, set the
Totalizer Event value to zero (which is the default setting).
b) TotalizerFlowStart(Numericalentry)
Thisoptionallowsthestart oftheTotalizerat a presetflowrate. The Totalizerwill not totalize untiltheprocessflowratebecomesequaltoorgreaterthantheTotalizer
FlowStartvalue. The limit of required Totalizer Flow Start value can be entered in increments of 0.1%, from 0 - 100% FS.
c) Totalizer Action Volume (Numerical entry)
This option allows the user to activate a preset required action when the
Totalizer reaches a preset volume. Totalizer Action Volume value must be entered in currently active volume- / mass-based engineering units. A
Totalizer Action Event becomes true when the Totalizer reading is more than or equal to the preset "Totalizer Action Volume”. If the Totalizer feature
43
is not required, set “Totalizer Action Volume” value to zero; this is the default setting.
d) TotalizerPowerOnDelay(Numericalentry)
Sometimesit isconvenient tostart theTotalizeronlyafteraspecifiedpower-up delay interval. Mass flow meters require some warm-up time from the power-up event in ordertostabilizetheprocessvariableoutputandto getanaccuratereading.
The “Totalizer PowerOnDelay”optionallows the user specify and set a time intervalwhichmustelapsefromthe devicepower-upeventbeforetheTotalizerwill beactivated.Validsettingsareinthe range of 0 to 3600 seconds. The default value is 0: no delay.
e) Totalizer Auto Reset (Tabular entry)
This option allows the automatic reset of the Totalizer when it reaches a preset Action
Volume value.Thisfeaturemaybeconvenientforbatchprocessing, whenapredefined volumeof fluid must be repeatedly dispensed into the process. Two selections are available:EnabledorDisabled. The default entry is Disabled. Totalizer Auto Reset selections can be set with the joystick UP and DN buttons and are accepted by pressing the joystick equivalent of an ENT button.
f) Totalizer Auto Reset Delay (Numerical entry)
This option may be desirable when the “Totalizer Auto Reset” feature is enabled and a predefined delay is required before anew batch cycle starts. Valid settings are in the rangeof 0 to 3600 seconds. The default valueis 0: nodelay.
g) Reset Totalizer ( 7DEXODU entry)
Either Totalizer’s reading can be reset by selecting the “Reset Totalizer” menu option.
A typical Totalizer Reset screen is shown below:
Reset Totalizer #1:
NO
YES
DO YOU WANT
RESET TOTALIZER?
Figure 25: Reset Totalizer Screen
When the “YES” option is selected, Totalizer #1 will be reset. A
confirmation screen will appear (see Figure 26 ).
44
**************************
Totalizer has been reset
**************************
Press any key...
Figure 26: Totalizer Reset Confirmation
A local maintenance push button is available to manually reset the Totalizer in the field for DPM meters without the OLED/joystick option. The maintenance push button is located on the left side of the flow meter (see Section 6.5
“Multi-Functional Push-Button Operation”).
NOTE: If the Totalizer “Lock Reset Function” is enabled, the Reset feature is not functional and therefore the Totalizer cannot be reset.
The “Lock Reset Function” parameter can only be changed manually
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Command Set in Section .2). By default, the Totalizer “Lock Reset
Function” is disabled, but it can be enabled by the user if the Totalizer reading in the user application must be preserved for the lifetime of the instrument. h) TotalizerReadingDecimalPoint(DP)Precision(Numericalentry)
Sometimes it is convenient to have Totalizer reading decimal point precision much lower than Flow Rate readings (for example, when the
Totalizer accumulates readings over a long period of time). The “Totalizer
DP Precision” parameter allows the user to decrease the number of digits after the decimal point for Totalizer readings from 0 to -5. For example, if the Flow Reading has precision of 3 digits after the decimal point, setting the “Totalizer DP Precision” parameter to -2 will result in Totalizer reading precision of 1 digit after the decimal point. Fewer digits after the decimal point allow for more digits in front of it.
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4..112 S ub nu “ Pu se O uttp
The flow Pulse Output operates independently from the Totalizers and is based
on configuration settings (see Figure 13)
which can provide pulse frequency proportional to instantaneous fluid mass flow rate.
45
The OLED/joystick interface and digital communication interface commands are provided to: x Enable/Disable Pulse Output x Start Pulse Output at a preset flow rate (0.0 - 100.0% FS) x Configure Unit/Pulse value (in current engineering units) x Configure Pulse Active On Time (50 - 6553 ms)
NOTE: The Pulse Output minimum Active On time is 50 milliseconds
(0.05 second). The Pulse Output cannot operate faster than one pulse every 100 milliseconds(0.1second). A goodruletofollowistosettheUnit/Pulsevalue equaltothemaximumflowinthesameunitspersecond.Thiswilllimitthe pulse rate to no faster than one pulse every second.
For example:
Maximum flow rate = 120 gr/min (120 gr/min = 2 gr/sec)
If unit per pulse is set to 120 gr per pulse, the Pulse Output will pulse once every minute.
If unit per pulse is set to 2 gr per pulse, the Pulse Output will pulse once every second.
The Pulse Output incorporates the pulse output queue, which accumulates pulses if the Pulse Output is accumulating process flow faster than the pulse output hardware can produce. The queue will allow the pulses to “catch up” later if the flow rate decreases. A better practice is to slow down the Pulse
Output by increasing the value in the Unit/Pulse setting in the Pulse Output
NOTE: If Pulse Output feature is required, the Solid State Relay
(SSR) output must be assigned to the “Pulse Output” function (see
Section 6.4.13.5). The Pulse output signal will be accessible via SSR output (pins 1 and 2) on the DPM 8-pin MiniDIN connector (see
Figure 1 for proper wiring connections).
G en
S TP / N ettttiin s
Co nd s
46
Sttaannddaarrd PPrreessssuurree
Standard Temperature and Normal Temperature menu selections allow the user to first select desired temperature units of measure: °C, °F, °K, or °R. By default, currently active temperature units will be selected. Once the units are selected, the use can adjust the desired temperature value and press the joystick equivalent of an ENT button to save it. By default, currently stored values will be displayed.
NOTE: Thefactory defaultvaluefor the Standard Temperatureis70 Û)
(21.1
Û& , andforNormalTemperatureis32 Û) (0.0
Û&
Standard Pressure and Normal Pressure menu selections allow the user to first select the desired pressure units of measure. By default, currently active pressure units will be selected.
Once the units are selected, the user can adjust the desired pressure value and then press the joystick equivalent of an ENT button to save it. By default, currently stored values will be displayed.
NOTE: The factory default value for both Standard and Normal
Pressure is 14.696 PSIA (1.0 atm).
NOTE: Once Standard Temperature/Pressure and/or Normal Temperature/
Pressure values are changed, the corresponding PI mass flow readings shown on the instrument display or transmitted via digital or analog interface will change as well.
Diis plla ce ss IIn PII)) S crre
The local OLED Process Information screens can be configured to be static
(manual control) or dynamic (automatic sequencing). In the static mode, pressing the joystick UP allows the user to page through the PI screens in the forward direction, while pressing the joystick DN pages through the PI screens in the opposite direction. When the last PI screen is reached, the firmware
“wraps around” and scrolls to the initial PI screen once again.
NOTE: PI screens which are not Enabled (masked) will be skipped. PI
Screen #1 (Mass Flow Rate, Pressure, Temperature and Totalizer #1 reading) cannot be Disabled.
47
This option determines whether the display screens are in static (manual control) or dynamic (automatic sequencing) mode. Two selections are available: Static or Dynamic. The default entry is Static (manual control).
bb)) SSccrreeeenn CCyycclle T iim
This menu selection defines the time interval in seconds for each PI screen to be displayed in the dynamic mode (automatic sequencing). Screen Cycle
Time can be set to any value between 1 and 3600 seconds (numerical entry).
c) PI Screen Configuration
Using Screen Configuration settings, the user can enable (unmask) or disable (mask) up to 6 different process variable combinations (see
Figure 27 ). The screen is Enabled if the checkbox on the same line as the corresponding screen is selected: [*]. If the screen is disabled, it will be skipped. By default, the instrument is shipped from the factory with all PI screens enabled, as indicated in Figure 27 .
PI Screen Config:
Screen #1 [*]
Sccrreeeen ##22 [[**]
Sccrreeeen ##33 [[**]
Sccrreeeen ##44 [[**]
Sccrreeeen ##55 [[**]
Sccrreeeen ##66 [[**]
Figure 27: PI Screen Configuration
As explained, in the example shown above, all PI screens are enabled. Each PI screen is assigned to a correspondingbitinthePIScreenRegister.Inorderto
changePIScreenConfiguration, the user should select the desired screen using the joystick UP and DN buttons and thenpress the RIGHT button.Theasteriskwill
appear or disappearontherightsideofthecorrespondingscreen line. The asterisksignifiesthatthescreenisenabled.Inordertodisable the screen, the corresponding asterisk must be removed. To accept and save new PI Screen
Configuration settings in the device’s nonvolatile memory, press the joystick ENT button.
d) OLED Operational Brightness (Numerical entry)
Using OLED Operational Brightness settings, the user can adjust the desired level of OLED brightness during normal operation (when the screensaver is not active).
The OLED brightness has 256 differentlevels.
48
NOTE: By default, the brightness level is set to 127 which is the optimal level for room temperature (20 °C or 70 °F).
e) OLED Screensaver Mode
OLED is subject to burn-in. It can retain images on the screen temporarily and, in some cases even permanently if it is left static for too long. In order to mitigate this potential problem, the screensaver feature is provided.
This feature has 4 different modes:
- Disabled (no screensaver)
- Low Brightness
- Vertical Scrolling GHIDXOW
- OLED Off f ) OLED Screensaver (SS) Time Out Feature (Numerical entry)
This menu selection defines atime interval in seconds from the moment the local
Esc button or joystick interface was last used (or, if neither was used, from the power up event) to the moment the Screensaver is activated. Each time the user activates the local Esc button or the joystick interface, the OLED brightness reverts to normal “Operational Brightness Level” and theinternaltimerresetstozero, starting anewdelaycycle.The defaultsettingis900 seconds (15 minutes).
g) OLED Screen Saver Brightness (Numerical entry)
Using OLED Screen Saver Brightness settings, the user can adjust the desired level of the OLED brightnessduring"LowBrightness" screensaver mode(whenthe screensaveris active). The brightness has 127 different levels.
49
NOTE: If Screensaver mode is active and has been changed, new settings will be activated in the next Screensaver cycle (after the Esc button or joystick interface was activated to disable the currently active screensaver). The OLED “Screensaver Brightness Level” parameter is only applicable for “Low Brightness” Screensaver mode. In “Vertical
Scrolling” mode, the normal operational brightness level will be activated. If OLED display is not used in the user application (e.g., the meter is installed in a remote enclosure), we recommend setting the
Screensaver mode to "OLED Off".
h) Flow Rate Precision (Tabular entry)
The DPM Flow Meter calculates Flow Rate Precision automatically, based on selected units of measureandcurrent gas full scaleflowratetokeepthe reading. Bydefault, the Flow Rate Precision is set to “Normal”. In cases where more digits after the decimal point are required, the usercanchangedecimal point precisionto the
“Elevated”level (one moredigit after the decimal point).
NOTE: In some cases, selecting “Elevated” precision may result in unstable readings (the last digit constantly changes). In such cases, we recommend switching the decimal point precision to the “Normal” level.
Su bm nu “ om niic attiio n P orrt S ettttiin s” meennuu sseelleeccttiioon aalllloow a m muunniiccaattiioon iinntteerffaaccee
The following settings are available for “Communication Settings” (see Figure 1 ):
The DPM instrument is equipped with a universal transceiver which supports both RS-232 and RS-485 interfaces. The following settings are available: x Disabled x RS-232 x RS-484
NOTE: The instrument is shipped from the factory with the communication interface type set according to your order.
50
NOTE: Before changing the communication interface type, make sure that the host device (PC or PLC) has the same interface type.
Connecting the instrument to the wrong communication interface may cause damage or result in faulty operation of the electronics circuitry.
This option determines the device’s digital communication interface speed
(Baud rate). It can be set to one of the following: x 1200 x 2400 x 4800 x 9600 x 19200 x 38400 x 57600 x 115200
By default, the device is shipped from the factory with its baud rate set to
9600.
NOTE: The baud rate set on the DPM meter should always match the baud rate of the host PC and/or PLC that it is connected to.
c) RS-485 Bus Address (Numerical entry)
The RS-232 interface does not require bus addressing. The RS-485 interface, however, does require 2 hexadecimal characters of the address to be assigned. By default, each flow meter is shipped with its RS-485 address set to 11 hexadecimal. When more than one device is present on the RS-485, each device must have a unique address. The 2 characters of the address in the hexadecimal representation can be changed from 01 to FF.
NOTE: Address 00 is reserved for global addressing. Do not assign the global address to any device. When a command with the global address is sent, all devices on the RS-485 bus execute the command but do not reply with an acknowledgement message.
NOTE: Do not assign the same RS-485 address for two or more devices on the same RS-485 bus. If two or more devices with the same address are connected to one RS-485 network, a communication collision will take place on the bus, causing communication errors to occur.
51
d) RS-485 Termination (applicable to RS-485 only)
A reflection in a transmission line is the result of an impendance discontinuity that a traveling wave sees as it propagates down the line.
To minimize such reflections from the ends of the RS-485 cable, the user must place a Line Termination (LT) near each of the two ends of the RS-
485 bus. If you are connecting a DPM meter as the last device in the end of a long (more than 100 meters) transmission line, you can use this menu
VHOHFWLRQWRLQWHUQDOO\FRQQHFWDȍUHVLVWRUEHWZHHQWKH56 -485 + and
– wires.
NOTE: Do not Enable Termination if the transceiver is set to RS-
232 mode. Doing so will cause damage to the instrument or improper operation of the communication interface. The factory default setting is Disabled .
Su bm nu “ od bu errffa ce on al))
If the DPM flow meter is equipped with Modbus interface, this menu selection allows the user to change the Modbus device ID (address) and its communication parameters.
Modbus is a standard protocol developed by A.E.G. Schnieder. The DPM supports only the Modbus RTU version. Modbus RTU enable a computer or a
PLC to read and write directly to registers containing the meter’s parameters
(see technical document TD-DPMCMOD-0118 “Modbus RTU slave interface for
AALBORG digital mass flow instruments” for a detailed description of supported
Modbus functions and registers).
The following parameters are available for “Modbus Settings” (see Figure 1 ):
Decimal representation ranges from 1 to 247. By default, all DPM meters are equipped with a Modbus interface shipped from the factory with the
Device ID parameter set to decimal 11.
NOTE: Do notassign the same ID address for two or more devices on the same
Modbus segment. If two or more devices with the same address are connected to the one Modbus network, a communication collision will take place on the bus, resulting in communication errors.
11220000
22440000
44880000
52
99660000
119922000
338844000
557766000
111155220000
By default, the device is shipped from the factory with its baud rate set at
9600.
NOTE: If multiple meters are connected to the Modbus Master controller device, they all should have the same baud rate settings as the Master.
Mooddbbuuss CCoom muunniiccaattiioon PPaarriittyy ((TTaabbuullaar eennttryy)
This parameter can be set to either None, Odd, or Even. By default, the
Parity parameter is set to None. In real applications, this parameter should follow Parity settings used in the Modbus Master controller.
Mooddbbuuss CCoom muunniiccaattiioon SSttoopp BBiit ((TTaabbuullaar eennttryy)
This parameter can be set to either One (1) or Two (2). By default, the
Stop Bit parameter is set to 2. In real applications, this parameter should follow Stop Bit settings used in the Modbus Master controller.
3..5 R ella siig nm
One set of the SPST Solid State Relay outputs is provided to actuate usersupplied equipment. It is programmable via digital interface or local
OLED/joystick interface such that the relay can be made to switch when a specified event occurs (e.g., when a low or high flow alarm limit is exceeded or when one of the two totalizers reaches a specified value).
The user can configure relay action from the following 16 options:
Disabled: No action (output is not assigned to any events and relay is not energized)
Low Flow Alarm:
High Flow Alarm:
(L) Low Flow Alarm condition
(H) High Flow Alarm condition
Range between H&L: (R) Range between High and Low Flow Alarm conditions
Low P. Alarm:
High P. Alarm:
(L) Low Pressure Alarm condition
(H) High Pressure Alarm condition
P. Range H-L:
Low T. Alarm:
High T. Alarm:
T. Range H-L:
(R) Range between High and Low Pressure Alarm conditions
(L) Low Temperature Alarm condition
(H) High Temperature Alarm condition
(R) Range between High and Low Temperature
Alarm conditions
53
Totalizer#1 > Limit:
Totalizer#2 > Limit:
Pulse Output:
Alarm Events:
Diagnostic Events:
(T1) Totalizer#1 exceeded preset limit volume
(T2) Totalizer#2 exceeded preset limit volume
Pulse Output Queue is overloaded
One or more Alarm Events are active
One or more Diagnostic Events are active
Manual On (Enabled): (M) Activated regardless of the Alarm, Totalizers or other conditions. By default, relay is Disabled (not energized)
NOTE: Relay terminals are accessible via the DPM meter’s 8-pin
MiniDIN connector (pins 1 and 2) and have maximum 48VDC voltage
and 0.4A current ratings. See Figure 1 and Table I for proper wiring
connections.
3..6 A na g O uttp utt C nfifig urra
The DPM series Mass Flow Meters are equipped with calibrated 0-5Vdc, 0-
10Vdc, and 4-20 mA output signals. The following options are provided for analog output:
The user can select one of the following: x 09GFȍPLQLPXPORDGLPSHGDQFH x 09GFȍPLQLPXPORDGLPSHGDQFH x 4P$VRXUFLQJW\SHȍPD[LPXPFXUUHQWORRSUHVLVWDQFH
NOTE : Before changing “Analog Output Interface” mode, make sure the load impedance is within the corresponding limits stated above.
Failure to do so might cause damage to the analog output circuitry or result in erroneous readings.
CAUTION: The 4-20 mA current loop output is self-powered
(sourcing non-isolated type). Do NOT connect an external voltage source to the output signals. (See Section 3.2 for proper wiring connections.)
The DPM analog output calibration involves calculation and storing the offset and span variables in the EEPROM based on two calibration points
(0 and 100% F.S.). The 0-5 and 0-10 outputs have only scale variables, and the 4-20 mA output has offset and scale variables.
54
NOTE: The analog outputs available in the DPM meter were calibrated at the factory. There is no need to perform analog output calibration unless the analog to digital converter (DAC) IC, output amplifier IC, or passive components from analog output circuitries were replaced or your factory customer support representative suggested recalibration. Any alteration of the analog output scaling variables in the EEPROM will void the calibration warranty supplied with the instrument.
Power up the DPM meter for at least 30 minutes prior to commencing the calibration procedure. Observe the current analog output mode settings.
For 0-5 or 0-10 Vdc output calibration:
Connect the corresponding type of measurement device (voltmeter) to pins 6 (plus) and 4 (minus) of the 8-pin MiniDIN connector.
For 4-20 mA output calibration:
Connect the corresponding type of measurement device (ampmeter) to pins 6 (plus) and 4 (minus) of the 8-pin MiniDIN connector.
Follow firmware prompts and adjust calibration point values according to your measurement device reading by use of the joystick UP , DN , LEFT and RIGHT buttons. If you need to abort calibration, press the Esc button.
When the calibration is complete, the firmware will display new offset and span values and ask the user to press the joystick ENT button to save the new calibration variables to the EEPROM, or to press the Esc button to abort calibration and exit without saving any changes. When the process is done, the firmware will prompt the user with a confirmation message.
This menu selection must be used only for troubleshooting purposes as requested by your customer support representative. It allows for emulating analog output readings by entering a desired flow rate reading in % of full scale, from 0.0 to 110.0%.
55
CAUTION: When “Analog Output Test” is selected, the output reading does not represent any actual Process Information (PI) variable (flow rate reading).
Adjust the desire flow output value using the joystick UP , DN , LEFT and
RIGHT buttons. Press the joystick ENT button to activate analog output.
To abort the analog output test mode, press the Esc button. Once the test mode is deactivated, the analog output should represent actual flow rate readings. attu s L ettttiin s
DPM series Mass Flow Meters are equipped with dual color LED which allows signaling a variety of different events with combinations of three colors (red, green and amber) and a specific time pattern. Status LED operation can be adjusted/ filtered for the indication of different events based on custom user needs.
Status LED can be set to the following modes (
1. Normal, which supports the following events:
1.1 Auto Zero Failure (constant RED)
1.2 Fatal Error (constant RED, requiring the system to be reset for recovery)
1.3 User entry via side Push Button (specific pattern limited by a time interval up to 35 seconds)
1.4 Power Up Sensor Warm Up interval (1 to 3 seconds). (Constant
AMBER). This can be interrupted only by User PB entry or Fatal Error.
2. Monitoring Flow Alarm and Flow Totalizer events (default settings):
2.1 High Flow Alarm RED/OFF (alternating every second)
2.2 Low Flow Alarm GREEN/OFF (alternating every second)
2.3 Totalizer#1 Event AMBER/OFF (alternating every second)
2.4 Totalizer#2 Event AMBER/OFF (alternating every second)
2.5 High Flow Alarm and Totalizer#1 Event RED/AMBER (alternating every second)
2.6 High Flow Alarm and Totalizer#2 Event RED/AMBER (alternating every
2 seconds)
2.7 Low Flow Alarm and Totalizer#1 Event GREEN/AMBER (alternating every second)
2.8 Low Flow Alarm and Totalizer#2 Event GREEN/AMBER (alternating every 2 seconds)
2.9 Both Totalizer#1 and Totalizer#2 Events AMBER/OFF (on for 3 seconds, off for 1 second)
2.10 High Flow Alarm and Totalizer#1 & #2 Events AMBER/RED (AMBER for 3 seconds, RED for 1 second)
2.11 Low Flow Alarm and Totalizer#1 & #2 Events AMBER/GREEN (AMBER for 3 seconds, GREEN for 1 second)
56
3. Monitoring Alarm Events only (any active Alarm event will trigger LED indication): GREEN/OFF (alternating every second)
4. Monitoring Diagnostic Events only (any active Diagnostic event will trigger
LED indication): RED/OFF (alternating every second)
5. Test and Configuration Communication Interface Monitoring:
5.1 Data Received (RX activity) RED LED flashing momentarily (about 200 ms or less)
5.2 Data Transmitted (TX activity) GREEN LED flashing momentarily (about
200 ms or less)
6. Modbus Communication Interface Monitoring (optional):
6.1 Data Received (RX activity) RED LED flashing momentarily (about
200 ms or less)
6.2 Data Transmitted (TX activity) GREEN LED flashing momentarily (about
200 ms or less) all C on er S ettttiin s
CAUTION: The signal conditioner parameters for your meter were set at the factory to maintain the best performance. Do not change Signal Conditioner parameters unless so instructed by your factory technical support representative. Consult the factory for more information.
4..114 S en orr Z erro
The DPM includes an auto zero function that, when activated, automatically adjusts the differential pressure sensors to read zero. The initial zero adjustment for your DPM was performed at the factory.
It is not required to perform zero calibration unless the device has zero reading offset with no flow conditions or the absolute pressure sensor reading is not accurate.
NOTE: Before performing Zero Calibration, make sure the device is powered up for atleast15 minutes and absolutely no flow condition is established. For better results, it is recommended that you start Auto
Zero at least 30 minutes after power was applied to the flow meter.
57
Shut off the gas flow into the DPM meter. To ensure that no seepage or leaking occurs into the meter, it is good practice to temporarily disconnect the gas source. The Auto Zero may be initiated locally using optional OLED/joystick
) or by pressing the multi-functional maintenance push button located on the left side of the meter, or via digital communication
interface (see Figure 4 : DPM Interface Connectors and Maintenance Push
Button).
4..1 D P S ns orr Z erro alliib
To start DP sensor Auto Zero locally using OLED/joystick interface, navigate to
“Sensor Zero Calibration” menu selection, then select “Start Auto Zero Now”.
On a DPM meter with optional OLED, the following screen will appear:
NO
YEESS
Abbssoolluutteelly N
DO YYO W AAN
STAAR T AAU OZZEER O?
Figure 28: Start Sensor Auto Zero
To start Auto Zero, select the YES option and push the joystick ENT button.
The status LED will start flashing RED/GREEN (alternating every 2 seconds).
The following screen will appear:
UTTO ZZEER O IISS O
DPPTT::77660088000 99001
Figure 29: Sensor Auto Zero “On” Confirmation
NOTE: Actual differential pressure and temperature Analog to Digital
Converter (ADC) counts readings for your instrument may be different.
NOTE: Internal Auto Zero process may take 5 to 15 seconds.
DPPM s ddiiggiittaal ssiiggnnaall pprroocceessssoor w 0 ±
7 coouunntts ((w T oolleerraannccee)), tthheen AAuutto ZZeerro iis ccoonnssiiddeerreed ssuucccceessssffuull.
58
TThhe sttaattuus LLEED w a ccoonnssttaanntt G
***********************
AUTO ZERO IS
DONE!
**********************
Press any Key...
Figure 30: Sensor Auto Zero Completed
If the device was unable to adjust the sensor reading to within 0 r 7 counts, then
Auto Zero is considered unsuccessful. A constant RED light will appear on the status LED. The user will be prompted with the “Auto Zero ERROR!” screen. If additional Auto Zero procedures yield the same error message, the sensor is most likely defective; arrange to return the meter for service.
NOTE: To initiate Differential Pressure Sensor Auto Zero Calibration using the multifunctional maintenance push button, see Section 6.5.
arrt A P A
The DPM instrument is equipped with a high accuracy, high resolution absolute pressure sensor which was calibrated at the factory and does not require additional calibration. Depending on actual installation conditions, however, during operation it may periodically require the auto tare procedure to increase accuracy.
CAUTION : The AP Auto Tare procedure must be performed with absolutely no flow conditions. Make sure both inlet and outlet ports of the instrument are connected to the atmosphere.
NOTE: Before performing AP Auto Tare, make sure the device is powered for at least 15 minutes and absolutely no flow condition is established. For best results, we recommend starting AP Sensor
Tare at least 30 minutes after power was applied to the flow meter.
59
NOTE : The AP Sensor Tare procedure requires high accuracy (at least 0.2% of reading) absolute pressure sensor reference standard.
The AP sensor Tare result will be as accurate as your reference absolute pressure sensor is.
To start the AP sensor Tare procedure locally using the OLED/joystick interface, select “Sensor Zero Calibration” from the main menu, then navigate to the “Start
AP Auto Tare” menu selection. The “Start Absolute Pressure Senor Tare” screen will appear (see Figure 31).
Sttaarrtt AAPP AAuuttoo T aarree::
NO
YEESS
DO YYO W NTT
STAAR T AAPP T REE?
Figure 31: Start AP (Absolute Pressure) Sensor Tare
To start the Absolute Pressure sensor tare, select the “YES” option and push the joystick ENT button. The following screen will appear:
Enter Ambient Press.
According Refer. Std.
14.696 PSIA
Make Sure Inst. Ports
Are Open to
Atmosphere
Figure 32: Entering Ambient Pressure from Reference Standard
Enter ambient pressure reading according to the reference standard. Once this is done, press the joystick ENT button. The instrument will perform an AP sensor tare process. If it is successful, the screen will prompt the user with a confirmation message.
4..115 S ub nu “ Alla ms a nd D ag no
The DPM is equipped with Alarm and Diagnostics Events registers. These are available via digital interface and an optional OLED screen indication. The
Alarm Event Register monitors non-critical alarm events related to the meter settings and process variables. The Diagnostic Event Register monitors critical diagnostic events related to meter performance and peripheral hardware conditions.
60
Ev en
TABLE XIX: ALARM EVENTS REGISTER
EVENT NUMBER ALARM EVENTS DESCRIPTION
12
13
14
10
11
8
9
6
7
4
5
1
2
3
High Flow Alarm
Low Flow Alarm
Flow Between High and Low Limits
Totalizer#1 Exceed Set Event Volume Limit
Totalizer#2 Exceed Set Event Volume Limit
High Pressure Alarm
Low Pressure Alarm
Pressure between High and Low Limits
Low Temperature Alarm
Low Temperature Alarm
Temperature Between High and Low Limits
Pulse Output Queue overflow
Password Event (attempt to change password)
Power On Event (power on delay > 0)
There are actually three separate registers: x The Status Alarm Event Register, which holds each active alarm event (this is read only) x The Mask Alarm Event Register, which allows the user to Enable or Disable monitoring for a particular event x The Latch Alarm Event Register, which allows the user to Enable or Disable the latch feature for a particular event
B
C
D
9
A
7
8
OLED BIT
CODE
0
1
2
5
6
3
4
Each active Alarm Event will be indicated on the OLED screen. In addition, the total number of currently active alarm events will be displayed on the first line. A typical display with no active Alarm Events is shown in Figure
33 .
61
Allrrm 0
Figure 33: Alarm Events Register (with no alarms)
A typical display with two active Alarm Events is shown in Figure 34 :
I
Figure 34: Alarm Events Register (with two active events)
If more than 7 events are displayed, the user can use the joystick UP and DN buttons to scroll through the record of all indicated events. If the event is not latched in the Latch Alarm Event Register, it may appear and disappear from the status screen; it will be indicated as long as the actual event is taking place.
Using the Mask Alarm Event Register settings, the user can individually enable
(unmask) or disable (mask) each event. The event is enabled if an asterisk appears in the brackets to the right of the event name. If the event is disabled, it will not be processed or indicated in the events status Register even if actual conditions for the event have occurred. By default, the meter is shipped from the factory with only one event active: “8 – Power On Event”. All other events are disabled. A typical display with Mask Alarm Event Register selection is shown in Figure 35 .
62
Raanngge bb//w H miit [ ]
6 - LLoow PPrreesss AAllm [ ]
Figure 35: Alarm Events Mask Register
In the example shown in Figure 35, latch features for all except event #2 are disabled. In order to change the Mask Alarm Event Register settings, the user should select the desired event using the joystick UP and DN buttons, and then press the RIGHT button. The asterisk will appear in (or disappear from) the brackets to the right of the selected event. The asterisk indicates that the event is enabled. To disable an event, remove the corresponding asterisk. Use the ENT button to accept and save your new Mask Alarm Event Register settings to the meter’s nonvolatile memory.
Using the Latch Alarm Event Register settings, the user can individually enable (unmask) or disable (mask) the latch feature for each event. The event is enabled if an asterisk appears in the brackets to the right of the event name. If the event is not latched (indicated by no asterisk), it may appear and disappear from the status screen. It will be indicated as long as the actual event is taking place. By default, the meter is shipped from the factory with the latch feature disabled for all events. A typical display with Latch Alarm
Event Register selection is shown in Figure 36 :
2 - Range b/w H-L [*] miit [ ]
6 - LLoow PPrreesss AAllm [ ]
Figure 36: Alarm Events Latch Register
In the Figure 36 example, latch features for all events are diabled except the
Range between High and Low. In order to change Latch Alarm Register settings, the user should select the desired event using the joystick UP and
DN buttons, then pressing the RIGHT button. The asterisk will appear in or disappear from the brackets to the right of the corresponding event. The asterisk means that the latch feature is enabled.
63
To disable a latch feature, the corresponding asterisk must be removed.
Use the ENT button to accept and save new Latch Alarm Event Register settings in the meter’s nonvolatile memory.
d) Reset Status Alarm Event Register (Tabular entry)
The Status Alarm Event Register can be reset by selecting the “Reset Alarm Event
Reg” menu option. A typical display with the Status Alarm Event Register reset screen is shown in Figure 37 . Note that it requires confirmation from the user:
Reset Alrm Events Reg.:
NO
YES
DO YOU WANT
RESET EVENT REG?
Figure 37: Resetting Alarm Events Register
Once the “YES” option is selected, the Event Register will be reset, and the following confirmation screen will appear:
***********************
Event Reg. Has been reset!
***********************
Press any Key...
Figure 38: Alarm Event Register Reset Confirmation Screen
NOTE: Any Alarm Events that may have occurred (Event 0 to Event
D) are stored in the internal status register. All detected events (if corresponding bit in the latch register is not masked) remain stored until the register is manually reset (by means of the digital communication interface). If the event corresponding bit in the latch register is masked (disabled), the event will be indicated as long as it is active (no latching). The status Alarm Event Register is mapped to the SRAM (volatile memory). In case of power interruption, the status Event Register will be automatically reset.
64
Diia gn c E ve s R eg
EVENT NUMBER
12
13
14
15
16
10
11
8
9
6
7
4
5
1
2
3
TABLE XX: DIAGNOSTIC EVENTS REGISTER
DIAGNOSTIC EVENTS DESCRIPTION
CPU Temperature Too High
DP Sensor Initialization Error
AP Sensor Initialization Error
2.5 Vdc Reference Out of Range
Flow Out of Permissible Range
Absolute Pressure over Permissible Range
Gas Temperature Out of Range
Analog Output Alarm Flag
UART Serial Communication Error
Modbus Serial Communication Error
EEPROM R/W Error
Auto Zero Failure Flag
AP Tare Failure Flag
DP ADC Counts Invalid
AP ADC Counts Invalid
Fatal Error
D
E
B
C
F
9
A
7
8
OLED BIT
CODE
0
1
2
5
6
3
4
There are actually three separate registers: x The Status Diagnostic Event Register, which holds each active alarm event (this is read only) x The Mask Diagnostic Event Register, which allows the user to Enable or Disable monitoring for a particular event x The Latch Diagnostic Event Register, which allows the user to Enable or Disable the latch feature for a particular event
Each active Diagnostic Event will be indicated on the OLED screen. In addition, the total number of currently active events will be displayed on the first line. A typical display with no active Diagnostic Events is shown in Figure 39 :
65
DiiaaggEEvveenntts SSttaattuuss: 0
Figure 39: Diagnostic Events Status Register (no active events)
A typical display with two active Diagnostic events is shown below:
DiiaaggEEvveenntts SSttaattuuss: 2
B - AAuuttoo ZZeerroo FFaaiilluurre
RR OR
I Figure 40: Diagnostic Events Status Register (two active events)
If more than 7 events are displayed, the user can scroll with the joystick UP and DN buttons to see all indicated events. If the event is not latched in the
Latch Diagnostic Event Register, it may appear and disappear from the status screen; it will be indicated as long as the actual event is taking place.
Using the Mask Diagnostic Event Register settings, the user can individually enable (unmask) or disable (mask) each event. The event is enabled if an asterisk appears in the brackets to the right of the event name. If the event is disabled (no asterisk), it will not be processed or indicated in the Events status Register, even if actual conditions for the event have occurred. By default, the meter is shipped from the factory with only one event active: “0 – CPU Temperature Too High”. All other events are disabled. For a typical display with Mask Diagnostic Event Register selection, see Figure 41 :
DiagEvents Mask Reg.:
0 – CPU Temp. High [*]
1 – DP EE Init Err [ ]
2 – AP EE Init Err [ ]
3 – VR Out of Range [ ]
4 – Flow OverLimit [ ]
5 – Pres OverLimit [ ]
6 – Temp OverLimit [ ]
Figure 41: Diagnostic Events Mask Register
66
In the example shown above, latch features for all events except #0 are disabled. In order to change Mask Diagnostic Event Register settings, the user houls select the desired event with the joystick UP and DN buttons, then press the RIGHT button. The asterisk will appear in or disappear from the brackets to the right of the selected event. The asterisk indicates that the event is enabled. Use the ENT button to accept and save the new
Mask Diagnostic Event Register settings to the meter’s nonvolatile memory.
Using Latch Diagnostic Event Register settings the user can enable
(unmask) or disable (mask) the latch feature individually for each event.
An event is enabled (unmasked) when an asterisk appears in the brackets to the right of the corresponding event. When an event is not latched (no asterisk on the display), it may appear and disappear from the status screen. It will be indicated as long as the actual even takes place.
By default, the meter is shipped from the factory with the latch feature disabled for all events. A typical display with Latch Diagnostic Event
Register selection is shown in Figure 42 :
DiagEvents Latch Reg.:
0 – CPU Temp. High [*]
1 – DP EE Init Err [ ]
2 – AP EE Init Err [ ]
3 – VR Out of Range [ ]
4 – Flow OverLimit [ ]
5 – Pres OverLimit [ ]
6 – Temp OverLimit [ ]
I Figure 42: Diagnostic Events Latch Register
In the example shown above, latch features for all but #0 are disabled. In order to change Latch Diagnostic Event Register settings, the user should select the desired event using the joystick UP and DN buttons, then press the RIGHT button. The asterisk will appear in or disappear from the brackets to the right of the corresponding event name. The asterisk indicates that the event is enabled. To disable an event, the corresponding asterisk must be removed. Use the ENT button to accept and save the new Latch Diagnostic Event Register settings in the meter’s nonvolatile memory.
The Status Diagnostic Event Register can be reset by selecting the “Reset
DiagEvents Reg.” menu option. A typical display with the Status
Diagnostic Event Register Reset screen is shown in Figure 43 :
67
Reset DiagEvents Reg.:
NO
YES
DO YOU WANT
RESET EVENT REG?
Figure 43: Resetting Diagnostic Events Register
When you select the “YES” option, the Event Register will be reset and the following confirmation screen will appear:
***********************
Event Reg. Has been reset!
***********************
Press any Key...
Figure 44: Confirmation of Diagnostic Events Register Reset
Se ns orrs A Re ad ng ((rre ad o
D 11771188441
AA::--33997799662 --33997799661
AAPP::--339977883355 99770
Figure 45: Pressure Sensors ADC Diagnostic
NOTE: Actual content of the ADC Diagnostic screen may vary depending on the model and device configuration. Consult your factory customer support representative for more details about ADC troubleshooting.
68
5..4 Te mp e S en Diia gn c ((rre ad o
This menu selection provides raw or average (filtered) ADC counts for gas temperature and pressure sensor temperature readings, which may be useful for Digital Signal Processing (DSP) troubleshooting (read only). A typical display with Temperature ADC Counts is shown in Figure 46 :
G 227755889
T: 227755994 2266..9988C
CCPPU 3344..1 C
D 3300..441
Figure 46: Temperature Sensors Diagnostics
NOTE: Actual content of the ADC Diagnostic screen may vary depending on the model and device configuration. Consult your factory customer support representative for more details about ADC troubleshooting.
5..5 A na g O uttp utt a nd P O Q ue ue D gn
((rre ad o
This menu selection provides information about the meter’s Analog Output settings and DAC counts, as well as Pulse Output (PO) Queue register value, which may be useful for Analog Output and PO circuitry troubleshooting (read only). A typical display with Analog Output and PO Queue values is shown in
Figure 47 :
Figure 47: Analog Output and PO Queue Diagnostic
NOTE: Actual content of the Analog Output and PO Queue Diagnostic screen may vary depending on the model,device configuration, and meter operational state. Consult your factory customer support representative for more details about Analog Output and 3 O troubleshooting.
69
5..6 R effe nc
Diia gn sttiic (rre d o olltta y) ge a SP C allc
This menu selection provides information about current 2.5Vdc reference voltage value as well as different parameters of the Temperature/Pressure
Compensation Algorithm, which may be useful for meter troubleshooting (read only). A typical Reference Voltage and DSP Calculation diagnostic screen is shown in Figure 48 :
00..00000011 1144..7788990
229944..22661111 330000..11551
Figure 48: Reference Voltage and DSP Calculation Diagnostic
NOTE: Actual content of the Reference Voltage and DSP Diagnostic screen may vary depending on the model, device configuration, and meter operational state. Consult your factory customer support representative for more details about Reference Voltage and DSP Calculation troubleshooting.
6.5 Multi-Functional Push-Button Operation
The DPM provides the user with a micro push-button switch accessible via a
small hole on the right side of the instrument (see Figure 49 ), which can be
used to select/start some important actions for the instrument. The micro push-button switch functionality is available on all DPM models in both analog and digital operation mode.
Pressing a switch briefly (< 6 sec) will not cause unwanted actions but will provide the currently selected mode for this instrument’s communication port.
The response will be with one of three signals, as indicated below:
1 AMBER flashing “Communication Port Disabled”
2 AMBER flashing “RS-232”
3 AMBER flashing “RS-485”
70
FIGURE 49: DPM INTERFACE CONNECTORS
AND MULTI-FUNCTION PUSH-BUTTON ACCESS HOLE
See Table XXI on the following page for explanations.
71
TABLE XXI: LED Indications using the Multi-Function Push-Button During
Normal Running Mode
INSTRUMENT ACTION STATUS LED
INDICATION
Amber flashing On/Off every 2 seconds
Com. Port Status:
1 – Port disabled
2 – RS-232
3 – RS-485
Amber flashing On/Off every 2 seconds
Green flashing On/Off every 2 seconds
Red constantly On: the user has 14 seconds to select which
Totalizer has to be reset or to toggle
Communication port mode.
The Com. Port toggle sequence is:
Disabled Ö RS-232
RS-232 Ö RS-485
RS-485 Ö Disabled
TIME
PUSHED
1-6 seconds
6-12 seconds
12-18 seconds
18-24 seconds
Pressing a switch briefly (<6 sec) will not cause unwanted actions from the device but will provide currently selected mode for
Communication port, depending on the number of Amber flashing:
1. Communication port disabled
2. RS-232
3. RS-485
Releasing the switch during this time will Reset the instrument. The instrument’s program will be restarted, and all warning and error messages will be cleared. During start-up, the instrument will perform a self-test.
Releasing the switch during this time will start the meter flow sensor Auto Zero Calibration.
NOTE: First make sure there is absolutely no flow and the meter has been connected to power for at least 15 minutes.
Releasing the switch during this time will switch the user push-button to Totalizers Reset Mode or Communication Interface Mode Change. The user can start push-button entry during the next
14 seconds, and then can select which Totalizer to reset or perform Communication Interface toggle action based on the number of times the push-button is pressed. When the push-button is pressed, in order to validate the single push, watch the Green LED turn On, and do not release the push button until the Green LED turns Off (approx. 2 seconds).
Pressing the push-button once during the 14second window will Reset Totalizer#1. When the push-button is released, the Red LED turns
On (ready to be pressed).
2 seconds until the
Green
LED turns
Off
2 seconds until the
Green
LED turns
Off
2 seconds until the
Green
LED turns
Off
2 seconds until the
Green
LED turns
Off
Pressing the push-button twice during the 14second window will Reset Totalizer#2. When the push-button is released, the Red LED turns
On (ready to be pressed).
Pressing the push-button 3 times during the 14second window will Reset Totalizer#1 and
Totalizer#2.
Pressing the push-button 4 times during the 14second window will initiate single toggle action for Communication Interface. Each single toggle action performs the following change:
Disabled Ö RS-232
RS-232 Ö RS-485
RS-485 Ö Disabled
72
NOTE: If the user does not press the Push-Button within a 10second timeframe or keep the push-button pressed for the required time (approximately 2 seconds or until Green LED turns
Off), no action will take place. Push-Button entry will reset to the default state and the Green LED will be turned On.
7 MAINTENANCE
7..11 G en
It is important that be DPM Mass Flow Meter be used only with clean, dry, non-corrosive filtered gases. Liquids may not be metered. Since the restrictor flow element (RFE) consists of small stainless steel channels, it is prone to occlusion due to impediments of large particles or gas crystallization. Other flow passages are also easily obstructed.
Great care, therefore, must be exercised to avoid the introduction of any potential flow impediment. To protect the instrument, we recommend the use of in-line filters: 5 P (DPM07) or 20 P (DPM17/37/47). There is no other maintenance required. It is good practice, however, to keep the meter away from vibration, hot corrosive environments, and excessive RF or magnetic interference. We recommend that meters be returned to Aalborg
£ for repair service and calibration (see Section 1.3).
CAUTION: TO PROTECT SERVICING PERSONNEL, IT IS
MANDATORY THAT ANY INSTRUMENT BEING RETURNED FOR
SERVICE HAS BEEN COMPLETELY PURGED AND
NEUTRALIZED OF TOXIC, BACTERIOLOGICALLY INFECTED,
CORROSIVE OR RADIOACTIVE CONTENTS.
ea niin
Before attempting any disassembly of the meter for clearning, we recommend inspecting the flow paths by looking into the inlet and outlet ends of the meter for any debris that may be clogging the flow through the instrument. Remove debris as necessary. If the blockage still exists, contact Aalborg or your local distributor to arrange for repair or cleaning service.
CAUTION: DISASSEMBLY MAY COMPROMISE CURRENT
CALIBRATION. After RFE and flow paths cleaning, a recalibration is needed. Aalborg offers professional calibration support. Contact Aalborg or your local distributor for cleaning and recalibration options.
73
8 RECALIBRATION
The recommended period for recalibration of the DPM flow meter is once annually.
Aalborg
£
Instruments’ Flow Calibration Laboratory offers professional calibration support for Mass Flow Meters using NIST-traceable precision calibrators under strictly controlled conditions. NIST-traceable calibrations are available.
CAUTION: DPM flow meters can be only calibrated by Aalborg
Instruments' Flow Calibration Laboratory or an Aalborg authorized trained and certified calibration facility.
9 RS-235/RS-485 SOFTWARE INTERFACE COMMANDS
9..11 G en
The standard DPM meter comes with an RS-232 interface; an RS-485 interface is optional. For the RS-232 interface, the start character is !
and two hexadecimal characters for the address must be omitted. The protocol described below allows for communications with the unit using either a custom software program or a “dumb terminal”. All values are sent as print
ASCII characters.
For the RS-485 interface, the start character is always !
. The command string is terminated with the equivalent of a carriage return; line feeds are automatically stripped out by the DPM. (See Section 3.3 for information regarding communication parameters and cable connections.)
9.2 Commands Structure
The structure of the command string is as follows:
RS-485 !<Addr>,<Cmd>,Arg1,Arg2,Arg3,Arg4<CR> Example: !11,F<CR>
RS-232 <Cmd>,Arg1,Arg2,ARg3,Arg4<CR> Example: F<CR>
!
Where:
Addr
Start character ** ( must only be used for RS-485 option )
RS-485 device address in the ASCII representation of hexadecimal
Cmd
Arg1 to
Arg4
CR
(00 through FF are valid). ** ( must only be used for R-485 option )
The one- or two-character command (see examples below)
The command arguments (see examples below). Multiple arguments are comma-delimited.
Carriage Return character
74
NOTE: The default RS-485 address for all units is 11. Never submit the start character with a two-character hexadecimal device address for the RS-232 option.
Several examples of commands are shown below. All assume that the DPM meter has been configured for decimal address 18 (12 hex) on the RS-485 bus:
1. To get currently selected Gas:
The DPM will reply:
2. To get current Flow Rate Alarm status:
The DPM will reply:
!12,G<CR>
!12,G:0,AIR<CR> (assuming the
Current Gas is #0, calibrated for AIR)
!12,FA,R<CR>
!12,FAR:N<CR> (assuming no flow alarm conditions)
3. To get a mass and volumetric flow reading:
The DPM will reply:
4. Set the High and Low Flow Alarm limit to 90% and 10% of Full Scale flow rate:
The DPM will reply:
!12,F<CR>
!12,50.0,50.3<CR> (assuming the mass flow is at 50% FS)
!12,FA,C,90.0,10.0<CR>
!12,90.00,10.00,<CR>
NOTE: Address 00 is reserved for global addressing. Do not assign the global address to any device. When commands with the global address are sent, all devices on the RS-485 bus execute the command but do not reply with an acknowledgement message.
The global address can be used to change RS-485 address for a particular device without local display and joystick interface with unknown address:
1. Make sure only one device (whose address must be changed) is connected to the RS-485 network.
2. Type the memory write command with the global address:
!00,MW,118,XX,<CR> where XX, the new hexadecimal address, can be from 01 to FF.
After the new address has been assigned, a device will accept commands with the new address.
75
NOTE: Do not assign the same RS-485 address to two or more devices on the same RS-485 bus. If two or more devices with the same address are connected to one RS-485 network, a communication collision on the bus will result, leading to communication errors.
76
7$%/(;;,, AALBORG DPM ASCII
SOFTWARE INTERFACE COMMANDS
Note: An “*” indicates power up default settings.
An “**”indicates optional feature not available on all models.
7
7
(number of pulses in Queue)
Sets and controls action of the programmable Pulse Output cir Unit/Pulse value has to be entered EU has to be not time based It is recommended to set the unit/pulse value equal to the meter maximum fl ow in the same units per second equivalent. This will limit the pulse to no faster than one pulse ever 600 liter/min (600 liter/min = 10 liters If Unit/Pulse is set to 10 liters per pulse, the output will pulse once ever Pulse active time in ms has to be at least twice less than pulse period (1/F). In this example any value between 50
8
8
P ModBus inter 0 – None* 1 – ODD 2 – EVEN D Diagnostic of ModBus state machine communication counters R Reset ModBus communication Port and ModBus state machine.
UART Error Codes:
1 – Command Not Supported or Back Door is not enabled.
2 – Wrong# of Arguments
3 – Address is Out of Range (MR or MW commands)
4 – Wrong# of the characters in the Argument
5 – Attempt to alter Write-Protected Area in the EEPROM
6 – Proper Command or Argument not found
7 – Wrong value of the Argument
8 – Manufacturer-specific information EE access KEY (wrong key or key is disabled)
Alarm Events codes and bit position:
B
C
9
A
D
7
8
5
6
3
4
1
2
Code Event Description
0 FLOW_ALARM_HIGH
FLOW_ALARM_LOW
FLOW_ALARM_RANGE
TOTAL1_HIT_LIMIT
TOTAL2_HIT_LIMIT
PRES_ALARM_HIGH
PRES_ALARM_LOW
PRES_ALARM_RANGE
TEMP_ALARM_HIGH
TEMP_ALARM_LOW
TEMP_ALARM_RANGE
PULSE_OUT_QUEUE
PASSWORD_EVENT
POWER_ON_EVENT
Bit position
0x0001
0x0002
0x0004
0x0008
0x0010
0x0020
0x0040
0x0080
0x0100
0x0200
0x0400
0x0800
0x1000
0x2000
Diagnostic Events codes and bit position:
B
C
9
A
7
8
5
6
D
E
F
Code Event Description
0
3
4
1
2
CPU_TEMP_HIGH
DP EE INIT ERROR
AP EE INIT ERROR
VREF_OUT_OF_RANGE 0x0008
FLOW ABOVE LIMIT
AP OUT OF RANGE
G TEMP OUT OF RANGE
ANALOG OUT ALARM
SER COMM FAILURE
MB COMM FAILURE
EEPROM FAILURE
AUTOZERO FAILURE
AP TARE FAILURE
DP PRESSURE INVALID
AP PRESSURE INVALID
FATAL_ERROR
Bit position
0x0001
0x0002
0x0004
0x0010
0x0020
0x0040
0x0080
0x0100
0x0200
0x0400
0x0800
0x1000
0x2000
0x4000
0x8000
0.. T RO BL SH OT
0..1 C om on Co nd s
Your DPM Mass Flow Meter was thoroughly checked at numerous quality control points during and after manufacturing and assembly operations. It was calibrated according to your desired flow and pressure conditions for a given gas or mixture of gases.
It was carefully packed to prevent damage during shipment. Should you feel that the instrument is not functioning properly, please check first for these common conditions: x Are all cables connected correctly?
x Are there any leaks in the installation?
x Is the power supply correctly selected according to requirements? When several meters are used, a power supply with appropriate current rating should be selected.
x Were the connector pinouts matched properly?
x When interchanging with other manufacturers’ equipment, cables and connectors must be carefully wired for correct pin configurations. Check these.
x Is the pressure differential across the instrument sufficient?
Also check the Troubleshooting Guide provided in Section 10.2.
0..2 Trro ub sh oo g G de
TABLE XXIII: TROUBLESHOOTING GUIDE
1
NO.
INDICATION LIKELY REASON
No zero reading, with Flow Tare procedure no flow condition.
was not performed properly.
SOLUTION
Perform Auto Zero Procedure (see section
6.4.
4 "Sensor Zero Calibration").
2
3
Status LED indicator and OLED Display remain blank when unit is powered up.
No response when flow is introduced from analog outputs
0-5Vdc or 4-20 mA.
Power supply is bad or polarity is reversed.
Measure voltage on pins 7 (+) and
8 (-) of the 8-pin MinDIN connector. If voltage is out of specified range, then replace power supply with a new one.
If polarity is reversed (reading is negative), make correct connection.
OLED Display reading and/or analog output
0-5Vdc signal fluctuates in wide range during flow measurement.
PC board is defective. Return DPM to factory for repair.
Output 0-5Vdc signal (pins 6 [+] and 4
[-] of the MiniDIN connector) is shorted on the GND or overloaded.
Check external connections to pin
6 (+) and 4 (-), of the MiniDIN connector. Make sure the load
UHVLVWDQFHLVPRUHWKDQȍ
9
NO. INDICATION
4
5
6
7
8
OLED Display reading does correspond to the correct flow range, but
0-5Vdc output signal does not change
(always the same reading or around zero).
LIKELY REASON
Output 0-5Vdc schematic is burned out or damaged.
Analog flow output scale and offset variable are corrupted.
PC board or sensor is defective.
SOLUTION
Return DPM to factory for repair.
Restore original EEPROM scale and offset variable or perform analog output recalibration (see
Section 6.4.
3.6).
OLED Display reading and 0-5Vdc output voltage do correspond to the correct flow range, but 4-20 mA output signal does not change (always the same or reading around 4.0 mA).
Calibration is off (more than ± 0.5 % F.S.).
External loop is open Check external connections to pins or load resistance
PRUHWKDQȍ
Output 4-20 mA schematic is burned out or damaged.
6 (+) and 4 (-) of the D-connector
MiniDIN. Make sure the loop
UHVLVWDQFHLVOHVVWKDQȍ
Return DPM to factory for repair.
DPM has initial zero shift.
Shut off the flow of gas into the
DPM; ensure gas source is disconnected and no seepage or leak occurs into the meter from either port). Wait for 1 min. with no flow condition and perform Auto
Zero calibration Procedure
(see Section 6.4.
4 “Zero
Calibration”).
OLED reading for Mass Measured parameter
Flow, Volumetric Flow,
Gas Pressure or Gas
Temperature is flashing.
exceeds the range of the corresponding sensor in the instrument.
Reduce the value of the flashing parameter within specified limits.
For example, reduce Mass Flow rate below 133% of instrument full scale range. NOTE: When at least one parameter is flashing on the display, the value of this parameter and mass flow reading cannot be considered accurate.
Return DPM to factory for repair.
Gas flows through the
DPM, but OLED
Display reading and the output voltage
0-5Vdc signal do not respond to flow.
The gas flow is too low for the particular
DPM model.
Differential Pressure
Sensor or PC board is defective.
Check maximum flow range on transducer’s front panel and make required flow adjustment.
Return DPM to factory for repair.
...continued...
9
NO. INDICATION LIKELY REASON SOLUTION
9
10
The error between 1. Instruments may be
DPM mass flow reading and another meter connected in series is more than combined configured to measure different Gas.
2. Other meter mass flow may have different standard conditions settings.
accuracy for both instruments.
3. There is leakage in the pipe between the DPM and other meter.
1. Check that both instruments are configured to measure the same Gas.
2. Make sure both instruments provide mass flow reading for the same Standard Conditions.
3. Check installation connections for leakage.
Gas flows through the DPM, output voltage 0-5Vdc signal does not respond to flow
(reading near
1mV). OLED
Display reading is negative.
11 Flow reading is unstable or jumps up and down.
Direction of the gas flow is reversed.
DPM is connected in the installation with back pressure conditions, and a gas leak exists in the system.
1. The DPM instrument response time is less than
20 ms, which makes meter react on quick flow variations normally associated with diaphragm pumps or faulty pressure regulators.
Check the direction of gas flow as indicated by the arrow on the front of the meter and make required reconnection in the installation.
Locate and correct gas leak in the system. If DPM has internal leak, return it to factory for repair.
1. DPM has Signal Conditioner settings which allow user to adjust instrument response time constant according to application requirements.
2. Some obstructions
(Teflon tape shreds or other big particulars) in the upstream connection.
2. Inspect inside of instrument upstream connections for debris.
12 The Diagnostic event code 0 is active
13 The Status LED indicator is constantly on with the RED light.
CPU temperature is too high
(overload).
Disconnect power from the
DPM. Make sure the ambient temperature is within specified range (below 60°C). Let the device cool down for at least
15 minutes. Apply power to the
DPM and check DE #0 status.
If DE with code #0 is active again, the unit has to be returned to the factory for repair.
Fatal Error (EEPROM or
Auto Zero error).
Cycle the power on the DPM. If
Status LED still constantly on with RED light, wait 1 minute and start Auto Zero function
(see Section
6.4.
4 Zero Calibration). If after Zero Calibration the Fatal
Error condition appears again, return the meter to the factory for repair.
0..3 Te ch niic all A siis nc
Aalborg £ Instruments will provide technical assistance over the phone to qualified repair personnel. Please call our Technical Assistance at
1-845-770-3000. Be sure to have your meter’s Serial Number and Model
Number ready for reference when you call.
AP PE DIIX I: CO MPPO
MPPO NT SSIID
DIIAAG RAAM
MPPO NT SSIID
AP PEN NSSIIO NAALL D WIIN GS
AP PE
(Be sure to follow Return Procedures as outlined in Section 1.3)
WARRANTY
Aalborg® Mass Flow Systems are warranted against parts and workmanship for a period of one year from the date of purchase.
Calibra tions are warranted for up to six months after date of purchase, provided calibration seals have not been tampered with.
It is assumed that equipment selected by the customer is constructed of materials compatible with gases used. Proper selection is the responsibility of the customer. It is understood that gases under pressure present inherent hazards to the user and to equipment, and it is deemed the responsibility of the customer that only operators with basic knowledge of the equipment and its limitations are permitted to control and operate the equipment covered by this warranty. Anything to the contrary will automatically void the liability of Aalborg and the provisions of this warranty.
Defective products will be repaired or replaced solely at the discretion of Aalborg at no charge. Shipping charges are borne by the customer. This warranty is void if the equipment is damaged by accident or misuse, or has been repaired or modified by anyone other than Aalborg or factory authorized service facility. This warranty defines the obligation of Aalborg and no other warranties expressed or implied are recognized.
APPENDIX IV: INDEX OF FIGURES
33
34
35
36
37
38
39
28
29
30
31
24
25
26
27
32
15
16
17
18
11
12
13
14
6
7
8
9
10
19
20
21
22
23
Figure #
1
2
3
4
5
Title
DPM 8-pin Mini-DIN Connector Configuration
DPM RS-232 Communication Interface
Connections
DPM RS-485 Communication Interface
Connections
DPM First Banner Screen
DPM Firmware and Communication Interface
Information Screen
DPM Initial Process Information
Joystick
DPM Process Information Screens
Program Protection Screen
Program Protection Password Screen
Change PP Password Screen
PP Password Change Confirmation Screen
DPM Upper Levels Menu Structures
Selecting Gas Group
Add Mixture Menu Selection
Assigning a Name to the Mixture
Add Gas Component and Ratio
Selecting Gas Component
G1 Component with Selected Gas
G1 Component with Highlighted Ratio Values
Mixture with 4 Components Ready to be Saved
Mixture Saved Confirmation Message
“User-Defined Mixture” Menu Selection with new
MyMix1 Mixture
40
Reset Totalizer Screen
Totalizer Reset Confirmation
PI Screen Configuration
Start Sensor Auto Zero
Sensor Auto Zero “On” Confirmation
Sensor Auto Zero Completed
Start AP (Absolute Pressure) Sensor Tare
Entering Ambient Pressure from Reference
Standard
Alarm Events Register (with no alarms)
Alarm Events Register (with two active events)
Alarm Events Mask Register
Alarm Events Latch Register
Resetting Alarm Events Register
Alarm Event Register Reset Confirmation Screen
Diagnostic Events Status Register (no active events)
Diagnostic Events Status Register (two active events)
Page
1
1
1
1
1
6
6
6
6
6
6
6
6
3
3
3
3
3
3
3
3
3
2
2
2
5
5
5
4
4
3
4
Figure #
41
42
43
44
45
46
47
48
49
Title
Diagnostic Events Mask Register
Diagnostic Events Latch Register
Resetting Diagnostic Events Register
Confirmation of Diagnostic Events Register Reset
Pressure Sensors ADC Diagnostic
Temperature Sensors Diagnostics
Analog Output and PO Queue Diagnostic
Reference Voltage and DSP Calculation
Diagnostic
DPM Interface Connectors and Multi-Function
Push-Buston Access Hole
Page
6
6
6
6
6
6
6
7
10
X
XI
XII
XIII
XIV
XV
XVI
XVII
XVIII
XIX
XX
XXI
XXII
XXIII
Table #
I
II
III
IV
V
VI
VII
VIII
IX
APPENDIX V: INDEX OF TABLES
Title
8-Pin Designations and Notes
DPM Flow Ranges
DPM Accessories
Pressure Drops
Approximate Weights
List of Supported Mass Flow Units of Measure
List of Supported Volumetric Units of Measure
List of Supported Absolute Pressure Units of
Measure
List of Supported Temperature Units of
Measure
Standard Pure Non-Corrosive Gases
Bioreactor Gases
Breathing Gases
Chromatography Gases
Fuel Gases
Laser Gases
O
2
Concentrator Gases
Stack Gases
Welding Gases
Alarm Events Register
Diagnostic Events Register
LED Indications using the Multi-Function Push-
Button During Normal Running Mode
Aalborg DPM ASCII Software Interface
Commands
Troubleshooting Guide
Page
7
6
6
3
3
3
3
7
9 -
2
2
2
1 -1
1
1
2
2
2
10
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