80003-096_EX-5100Comb LLC(MCN-416 04-03-09)

ENMET
PO Box 979
Ann Arbor, MI 48106-0979
www.enmet.com
EX-5100 COMBUSTIBLE
Manual
Manual part number
80003-096
MCN-416, 04/03/09
Table of Contents
1.0 INTRODUCTION ............................................................................................................................. 1
1.1 Unpack............................................................................................................................................... 1
1.2 Check Order ...................................................................................................................................... 1
1.3 Serial Numbers .................................................................................................................................. 1
2.0 FEATURES OF THE EX-5100 ......................................................................................................... 2
3.0 INSTALLATION OF THE EX-5100 .................................................................................................... 3
3.1 Mounting the EX-5100 Enclosure ..................................................................................................... 3
3.2 Wiring the EX-5100 to a Control Unit .............................................................................................. 4
4.0 OPERATION OF THE EX-5100 ....................................................................................................... 6
4.1 Start up .............................................................................................................................................. 6
4.1.1 Typical Start Up ...................................................................................................................... 6
4.1.2 Alternate Start Up ................................................................................................................... 6
4.2 Normal Display Mode ....................................................................................................................... 7
4.2.1 Alarm Conditions EX-5100 .................................................................................................... 7
5.0 M AINTENANCE OF THE EX-5100 ................................................................................................... 8
5.1 Maintenance Menu ............................................................................................................................ 8
5.2 Calibration of the EX-5100 ............................................................................................................... 9
5.2.1 Zero Adjust ............................................................................................................................ 11
5.2.2 Gas Span ............................................................................................................................... 11
5.2.3 Exit Maintenance Menu......................................................................................................... 11
5.3 Heater Voltage Settings ................................................................................................................... 13
5.4 Sensor Replacement ........................................................................................................................ 13
6.0 REPLACEMENT PART NUMBERS .................................................................................................. 14
7.0 WARRANTY ............................................................................................................................ 14
List of Figures and Tables
FIGURE 1: EX-5100 FEATURES .......................................................................................................... 2
FIGURE 2: EX-5100 MOUNTING DIMENSIONS ...................................................................................... 3
FIGURE 3: TERMINAL POSITIONS EX-5100 SENSOR/TRANSMITTER ...................................................... 5
TABLE 1: EX-5100 MAINTENANCE MENUS SEQUENCE ......................................................................... 8
FIGURE 4: CALIBRATION ADAPTER EX-5100 SENSOR/TRANSMITTER ................................................... 9
TABLE 2: EX-5100 STANDARD SPAN G AS ........................................................................................ 10
TABLE 3: SELECTED EX-5100 NON-STANDARD G AS ........................................................................ 10
TABLE 4: CALIBRATION TIME ............................................................................................................ 11
FIGURE 5: EX-5100 M AINTENANCE MENU FLOW CHART.................................................................... 12
Reference information:
NOTE: [important information about use of instrument – if not followed may have to redo some steps.]
CAUTION: [affects equipment – if not followed may cause damage to instrument, sensor etc…]
WARNING: [affects personnel safety – if not followed may cause bodily injury or death.]
EX-5100 COMBUSTIBLE
ENMET
1.0 Introduction
The ENMET EX-5100 sensor/transmitters (S/T) is, 3-wire, 24VDC 4-20 ma S/T for the detection of combustible gas. The EX5100 is meant to be used in conjunction with an appropriate power supply and controller. The ENMET EX-5100
sensor/transmitter is in an enclosure rated for use in a Class I, Div. 1, Groups B, C, D, classified area.
NOTE: All specifications stated in this manual may change without notice.
1.1 Unpack
Unpack the EX-5100 and examine it for shipping damage. If such damage is observed, notify both ENMET customer service
personnel and the commercial carrier involved immediately.
Regarding Damaged Shipments
NOTE: It is your responsibility to follow these instructions. If they are not followed, the carrier will not honor
any claims for damage.
This shipment was carefully inspected, verified and properly packaged at our company and delivered to the carrier in
good condition.
When it was picked up by the carrier at ENMET, it legally became your company’s property.
If your shipment arrives damaged:
•
Keep the items, packing material, and carton “As Is.” Within 5 days of receipt, notify the carrier’s local office and
request immediate inspection of the carton and the contents.
•
After the inspection and after you have received written acknowledgment of the damage from the carrier, contact
ENMET Customer Service for return authorization and further instructions. Have your Purchase Order and Sales
Order numbers available.
ENMET either repairs or replaces damaged equipment and invoices the carrier to the extent of the liability coverage,
usually $100.00. Repair or replacement charges above that value are your company’s responsibility.
The shipping company may offer optional insurance coverage. ENMET only insures shipments with the shipping
company when asked to do so in writing by our customer. If you need your shipments insured, please forward a written
request to ENMET Customer Service.
Regarding Shortages
If there are any shortages or questions regarding this shipment, please notify ENMET Customer Service within 5 days of
receipt at the following address:
ENMET
680 Fairfield Court
Ann Arbor, MI 48108
734-761-1270 734-761-3220 Fax
1.2 Check Order
Check, the contents of the shipment against the purchase order. Verify that the EX-5100 is received as ordered. [Each EX5100 is labeled with its target gas.] If there are accessories on the order, ascertain that they are present. Check the contents of
calibration kits. Notify ENMET customer service personnel of any discrepancy immediately.
1.3 Serial Numbers
Each EX-5100 is serialized. These numbers are on tags on the equipment and are on record in an ENMET database.
1
EX-5100 COMBUSTIBLE
ENMET
2.0 Features of the EX-5100
See Figure 1 for location of features:
Feature
Description
Display
LCD: Indicates the level of gas detected by sensor
Gain Potentiometer
POT 1: Display contrast adjustment
POT 2: Combustible Sensor Zero adjustment, See Sections 3.2 and 5.4
POT 3: Combustible Heater Do not adjust unless advised by ENMET
POT 4: Used with EX-5150-MOS (High Voltage) Do not adjust unless advised by ENMET
(POT)
Visual Alarms
LED indicators:
Power / Fault Indicator LED, Green / Red
Alarm (3) Indicator LED, Red
Magnetic Switches
MENU: Advances the instrument display through menus (Zero, Span, Exit)
SELECT: Selects the Zero, Span, Exit menu or sets proper calibration values for Zero or Span
Sensor
For sensing LEL levels of gas, see Table 2 and 3 for sensor types
Magnetic switches control the instrument maintenance functions. The switch locations are indicated by MENU and SELECT. A
magnetic field pulse is applied by momentarily putting the end of the magnet in proximity to the switch and then removing it.
Since the magnetic field penetrates the window, the enclosure cover is not removed in order to perform calibration.
Three alarm points are preprogrammed into the EX-5100 sensor/transmitters. At each alarm point, an LED on the front panel
is activated. These internal alarm settings are independent of the 4-20mA output alarm values that can be set at a controller.
An optional relay board is available that will activate 0.5 Amp relay contacts at each alarm point, plus a fault relay.
3 Alarm Indicators
Power /Fault
Indicator
POT 1
Display
POT 3
Menu
Select
POT 4
MENU
Magnetic switch
POT 2
Sensor
Note: POT 1, 3 & 4 shown
for reference only.
Do Not Adjust
SELECT
Magnetic switch
Note: See Section 6.0
Replacement Parts for
sensor identification
Internal PCB View
External View
Figure 1: EX-5100 Features
2
EX-5100 COMBUSTIBLE
ENMET
3.0 Installation of the EX-5100
CAUTION: Area must be declassified during installation.
The ENMET EX-5100 gas sensor/transmitter (S/T) is a 3-wire, 24 VDC 4-20 mA S/T for the detection of combustible gas. The
S/T is meant to be used in conjunction with an appropriate power supply and controller. The ENMET EX-5100
sensor/transmitter is in an enclosure rated for use in a Class I, Div. 1, Groups B, C, D, classified area. Appropriate wiring,
conduit and fittings are required for proper installation in a explosion proof rated environment.
CAUTION: Since the sensor/transmitter detects gas only at the sensor location, pay attention to the possible sources of gas, the
density of the gas, locations where the gas may be confined and locations where the gas may damage or injure
property or personnel, when choosing locations of sensor/transmitters.
Take into consideration environmental factors when deciding on S/T location. Avoid locations where the S/T may be damaged
by liquid immersion, excessive heat or other know hazards. Also, take precautions to insure condensation inside of the conduit
does not enter the S/T.
3.1 Mounting the EX-5100 Enclosure
Mount the enclosure, using the two mounting holes provided see Figure 2. Pay particular attention to the source and density of
the gas being detected when choosing the location. Mount the S/T near the ceiling for lighter than air gases /vapors and near
the floor for heavier then air gas/vapors. Contact ENMET if you have questions regarding your application.
CAUTION: Before connecting S/T to controller remove the power source to controller. Failure to do so may cause damage to
sensitive components.
Optional
Conduit fitting
Typically: ½″ NPT female
½″ NPT female
Mounting Holes
2 places, 0.313″
Select
Menu
TOP VIEW
Sensor
Sensor/Transmitter
Enclosure Top View
Sensor/Transmitter
Enclosure Side View
SIDE VIEW
Sensor
Figure 2: EX-5100 Mounting Dimensions
3
EX-5100 COMBUSTIBLE
ENMET
3.2 Wiring the EX-5100 to a Control Unit
CAUTION: Area must be declassified during installation.
Run conduit and 16 AWG(1.5MM2) wires to the enclosure from the power supply and controller. If the EX-5100 is installed in a
hazardous location as defined by the National Electrical Code, then ALL wiring must be in accordance with the National code
and any local governing codes.
Open the enclosure, and remove the 2 screws that retain the display overlay to the circuit board.
Use caution when removing the over lay. Do not damage the magnetic switches.
Remove the two overlay standoffs and remove the circuit board, exposing the terminal strips on the bottom of the circuit board.
Do not disconnect the circuit board wiring.
Connect the wires from the controller (power supply) to the supplied J4 plug then attach to J4 terminal.
Connect the wires from the sensor to the supplied J8 plug then attach to the J8 terminal.
See Figure 3 for locations
Optional Relay Output Board
It
is
recommended
that the auxiliary
J4 PLUG – TERMINAL TO CONTROLLER WIRING
alarm is powered separately.
To J4
Position Function
Use 14 – 20 AWG(2.5 – 0.5 MM2) wire.
1+
24 VDC power
When on power the relays are energized.
Relays are rated at 0.5 Amp continuous.
2
GND
3
4*
5*
4 - 20 mA out
RS-485 D+
RS-485 D–
Plug J4
Wires to
Controller
*Contact ENMET for Modbus
Address information
J4
5
4
3
2
1
Relay Output Board
Bottom View
To J8
NOTE: Auxiliary alarms should be powered from an
independent power source separate form the
instrument power to avoid alarm failure due to
controller malfunction.
ALL wiring must be in accordance with the
National code and any local governing codes.
1 2 3
J8
Wires to
Sensor
Plug J8
Circuit Board Bottom View
J8 PLUG – TERMINAL SENSOR WIRING
Position Function
1+
2
3–
Heater
Signal
GND
Position Function
1+
2
3–
Heater
Signal
GND
Catalytic Sensor 03070-001
Sensor 03070-001
End View
Red
Yellow
Blue
Catalytic Sensor 03070-003
Red
White
Black
Sensor 03070-003
End View
4
EX-5100 COMBUSTIBLE
ENMET
Display Overlay Screws
(2 places)
Display Overlay
Display Overlay Standoffs
(2 places)
Display
Printed Circuit Board (PCB)
J4 and J8 Terminals are located
on the bottom side of PCB
Magnetic Switches
(2 places)
Magnetic Switches
(2 places)
Optional
Relay Output circuit Board
Printed Circuit Board
(PCB)
Sensor/Transmitter Enclosure
Cutaway View
EX-5100 Interior Expanded View
EX-5100 Interior Assembled View
Figure 3: Terminal Positions EX-5100 Sensor/Transmitter
When wiring is complete, re-assemble the EX-5100. Use caution when installing the overlay so as not to damage the magnetic
switches. With the area declassified, apply power to the instrument. Allow the sensor transmitter to stabilize for 1 hour and
then enter the maintenance menu.
CAUTION: Area must be declassified during this procedure.
To enter the maintenance menu hold the magnet over the MENU switch for 2 to 4 seconds
The chart below indicates the maintenance menu sequence see Figure 5 for a detailed maintenance menu flow chart.
Example of Display
Function
Normal Display Mode
Measurement of target gas
0LEL
Hold the magnet over the MENU switch for 2 – 4 seconds to enter the Maintenance Menu
The Power/Fault LED will flash Green – Red to indicate the EX-5100 is in Maintenance Mode
To exit the maintenance Menu and return to the Normal Display Mode:
Exit
If intended function Tap the magnet over SELECT switch
POT 2 on PCB
Tap the magnet over the MENU switch to advance to the Zero procedure
For adjusting Zero:
Zero
If intended function Tap the magnet over SELECT switch
Tap the SELECT switch once with the magnet, the display will alternate between [PV: 0] and [Zero]
At this point, tap the MENU switch once with the magnet. The display should now alternate between [Zero] and
[In 300] (+ or – 30). If not then, use POT 2, to adjust to 300(+ or – 30).
NOTE: The EX-5100 will automatically reset the zero point based on a stable signal if [Span] appears before you get the 300 set
then re-enter the zero cal again, to start the clock over.
Once the zero is set, you will see [Span] on the display. Tap the menu until [EXIT] is displayed, then tap select once to put the
instrument in the normal operation mode.
5
EX-5100 COMBUSTIBLE
ENMET
4.0 Operation of the EX-5100
It is best to have the EX-5100 transmitters powered up and operational for 24 hours before applying calibration or test gas to
them.
When the EX-5100 transmitter is first powered up, it goes through a series of momentary screens, which identify the
instrument model number, serial number and software revision. After all of the momentary screens have been displayed, the
instrument arrives at the Main Gas Display showing the gas concentration and unit of measurement.
Depending on transmitter configuration and calibration condition, the furthest right character in the display may flash a letter
indicating the instrument status. See the Section 4.1.2 below.
4.1 Start up
4.1.1 Typical Start Up
When power is supplied to the EX-5100, the S/T will display the following sequence of information:
NOTE: Software revision may cause variations of display output.
Example of Display
Function
The instrument: Model EX-5100
EX-5100
The instrument: Serial Number
72-1256
S/W
The instrument: Software Revision
X.X
IF the right most character is a flashing W
0LE W
The instrument is in Warm-up mode
This should last about 1 minute
The Signal Output is held at 4mA during warm-up
The instrument: Normal Display Mode
0 LEL
Measurement of target Gas
For Combustible Gas
IF the right most character is a flashing C or F See Section 4.1.2
4.1.2 Alternate Start Up
Depending on EX-5100 S/T configuration and calibration condition, the furthest right character in the display may flash a letter
indicating the instrument status. See the table below.
Example of Display
Function
IF the right most
character is a flashing C
0 LEC
IF the right most
character is a flashing F
0 LEF
The last calibration of the instrument was invalid
The instrument must be recalibrated
There is a sensor fault
To view instrument settings tap the MENU switch until 0 LEL is displayed.
6
EX-5100 COMBUSTIBLE
ENMET
4.2 Normal Display Mode
When the EX-5100 is installed as described in section 3, and in clean air, the POWER green LED is on, the display is lit and
the information on the display is measurement of the target gas detected by the EX-5100. The red alarm and fault LEDs are
not lit.
To advance through displays of operational information tap the magnet over the MENU button.
NOTE: Software revision may cause variations of display output.
See sequence of operational information below:
Display Measurement of the target gas
0LEL
Tap the magnet over the MENU button
MENU
Display indicates Alarm 1 Set point
Tap the magnet over the MENU button
A1:
SELECT
10
SELECT
MENU
Display indicates Alarm 2 Set point
Tap the magnet over the MENU button
A2:
20
SELECT
No Function for the
SELECT button
in this mode
MENU
Display indicates Alarm 3 Set point
Tap the magnet over the MENU button
A3:
50
SELECT
MENU
Display indicates mA Span range
(Full Scale)
Tap the magnet over the MENU button
SELECT
mA:
100
MENU
Display returns to gas measurement
Operational Display Flow Chart
4.2.1 Alarm Conditions EX-5100
There are three alarm set points available. These alarm set points can be changed within limits; see the maintenance section of
this manual for the procedure.
If the gas concentration increases above that of the alarm set point, the associated red LED is lit.
7
EX-5100 COMBUSTIBLE
ENMET
5.0 Maintenance of the EX-5100
CAUTION: Do
not open the EX-5100 S/T in a classified area.
CAUTION: Do Not Attempt A Span Procedure Without Calibration Gas Applied to The Sensor; if this is done, the S/T is forced
into a calibration fault mode.
Magnetic switches control the MENU and SELECT functions. The MENU and SELECT switch locations are indicated on the
display panel, see Figure 3. The MENU switch is used to display the various menu options and make incremental changes to
numbers such as alarm points, calibrations gas, etc. The SELECT switch is used to select that option or entered digit. Most
maintenance functions are controlled by simple taps of the supplied magnet on the transmitter glass, below the MENU and
SELECT boxes on the front panel.
5.1 Maintenance Menu
To enter the maintenance menu hold the magnet over the MENU switch for 2 to 4 seconds
Table 1 indicates the maintenance menu sequence see Figure 5 for a detailed maintenance menu flow chart.
Table 1: EX-5100 maintenance Menus Sequence
Example of Display
Function
Normal Display Mode
Measurement of target gas
0LEL
Hold the magnet over MENU switch for 2 – 5 seconds to enter the Maintenance Menu
The Power/Fault LED will flash Green – Red to indicate the EX-5100 is in Maintenance Mode
To exit the maintenance Menu and return to the Normal
Display Mode:
Exit
If intended function Tap the magnet over SELECT switch
Tap the magnet over the MENU switch to advance to the Zero procedure
For adjusting Zero:
Zero
If intended function Tap the magnet over SELECT switch
Tap the magnet over the MENU switch to advance to the Span procedure
For adjusting the Span:
Span
If intended function Tap the magnet over SELECT switch
Tap the magnet over the MENU switch to advance to each Alarm set point procedures
For adjusting the Alarm 1, 2 and 3 set points:
Alarm1
If Intended function Tap the magnet over SELECT switch
Alarm2
Alarm3
Tap the magnet over the MENU switch to advance the mA Span set point procedure
For adjusting the mA Span set point:
mA Span
If intended function Tap the magnet over SELECT switch
Taping the MENU switch without taping the SELECT switch will allow you to cycle through the menu options.
You must Tap the SELECT switch win order to change the desired operation.
NOTE: If the S/T fails to respond, the magnet may have become weak and may need to be replaced.
8
EX-5100 COMBUSTIBLE
ENMET
5.2 Calibration of the EX-5100
Calibration is the process of setting the instrument up to read accurately when exposed to a target gas. The Zero function sets
the clean air reference point and the Span function sets the sensitivity of the instrument.
Initial Calibration:
Wait 24 hours after initially supplying power to the EX-5100 sensor/transmitter (S/T) before initial calibration. The S/T has
been precalibrated at the factory, and initial field calibration should result in only fine tuning to circuit, as well as a way to
check that installation is successful. It is not necessary to open the enclosure to make adjustment; the span and zero
potentiometers are operated with magnets from outside the enclosure. Do Not open the S/T unless the area is de-classified.
Calibration Zero and Span functions are two separate procedures. They operate independently of each other. It is
recommended that the Zero procedure be done prior to the Span procedure. ENMET recommends at least quarterly calibration
of the EX-5100 transmitters.
Calibration equipment is available from ENMET to calibrate the EX-5100 sensor/transmitter. A calibration adapter will have a
fitting for the gas cylinder on one side and a cover to go over the sensor housing on the other.
Generally, a cylinder of 20.9% Oxygen is used to provide a fresh air reference or Zero point for the calibration. Another
cylinder is used to provide the Span reference point for calibration. Depending on the instrument calibration, the Span gas may
be the same gas that the instrument is calibrated to display, or it may be another gas, which ENMET has found to have a similar
response.
Menu
Calibration Cover
p/n 03620-015
Menu
Select
Select
Fitting to
calibration cover
Regulator
Gas Cylinder
Figure 4: Calibration Adapter EX-5100 Sensor/Transmitter
9
EX-5100 COMBUSTIBLE
ENMET
Calibration:
Calibration of Standard Gases: Calibration of the EX-5100 should be preformed using the target gas unless Methane is
known to be a possible background hazard. Reference Table 2 Standard Span Gas
The EX-5100 was factory calibrated using 50% LEL levels of gases. Other levels, minimal 20% LEL, are acceptable. Contact
ENMET prior to use.
Table 2: EX-5100 Standard Span Gas
Gas
Methane
Propane
Hydrogen
Butane
Range
0 – 100 %LEL
0 – 100 %LEL
0 – 100 %LEL
0 – 100 %LEL
Alarm 1*
10% LEL
10% LEL
10% LEL
10% LEL
Alarm 2*
20% LEL
20% LEL
20% LEL
20% LEL
Alarm 3*
Span Calibration Gas
Calibration Point
50% LEL
50% LEL
50% LEL
50% LEL
50% LEL Methane
50% LEL Propane
50% LEL Hydrogen
50% LEL Butane
50% LEL Methane
50% LEL Propane
50% LEL Hydrogen
50% LEL Butane
*NOTE: These internal sensor/transmitter alarms are independent of the 4-20mA Controller alarm point settings.
CAUTION: If Methane is a possible hazard, calibration should be done using Methane.
Calibration of Non-Standard Gases: The EX-5100 range is 0 – 100% LEL. All Non-Standard gas instruments have been
factory calibrated on LEL of Methane.
Methane is considered to have a coefficient or relative response of 1.00(one). Calibration coefficients relative to Methane have
been generated for over 30 different combustible hydrocarbons and solvents. A partial list of these gases and vapors are listed
in Table 3 Non-Standard Gas. An example of how to use this list of relative response coefficients is shown below.
Example: Acetone coefficient factor is 2.86
20%LEL Methane multiplied by the coefficient of 2.86 = 57
Apply the 20%LEL Methane to the instrument the display should read 57, 57 = 57%LEL Acetone. See Section 5.2.2 Span Gas.
CAUTION: If Methane is a possible hazard, the instrument should be programmed and calibrated for Methane. Calibration
should be done using Methane.
Table 3: Selected EX-5100 Non-Standard Gas
Gas
Acetone
Isobutane
n-Butane
Cyclohexane
Ethane
Ethanol
Ethyl Acetate
Ethylene
Hydrogen
Isopropyl Alcohol (IPA)
Methanol
Methyl Ethyl Ketone(MEK)
n-Pentane
Propane
Toluene
Xylene
%LEL
2.6%
1.8%
1.8%
1.3%
3.0%
3.3%
2.2%
2.7%
4.0%
2.2%
6.7%
1.9%
1.4%
2.1%
1.2%
1.1%
Coefficient
2.86
1.82
1.82
2.22
1.18
2.22
2.86
1.54
1.05
2.86
1.43
2.86
2.00
1.67
2.50
2.50
Calibration Gas
%LEL Methane
20
20
20
20
40
20
20
40
50
20
40
20
20
40
20
20
Display Reads
57
36
36
44
47
44
57
62
52
57
57
57
40
67
50
50
In addition to the established coefficients listed in Table 3 above, ENMET can generate calibration data for most common
combustible gases and vapors for which a sample can be readily obtained.
10
EX-5100 COMBUSTIBLE
ENMET
5.2.1 Zero Adjust
A ZERO function should be performed only when the EX-5100 sensor/transmitter is exposed to fresh air. If the air at the
sensor is in question, use a cylinder of 20.9% oxygen to provide a clean air reference. Attach the gas cylinder to the regulator
and regulator to the calibration cover, allow gas to flow over the sensor for 3-5 minutes.
Enter the maintenance menu by placing the magnet over the MENU switch for 2 to 4 seconds. See Figure 5, EX-5100
Maintenance Menu flow chart.
The first menu available is the Zero.
Tap the SELECT switch to perform a Zero.
If the Zero is successful: Cal OK appears and in 1 – 2 seconds display will change to Span.
If you wish to Span the sensor, Tap the SELECT switch. You are now ready to apply gas. Proceed to gas span step 2.
If you wish to Exit the maintenance menu, Tap the MENU switch until Exit is displayed, then Tap the SELECT switch to return
to the instrument to Normal Gas Display.
If the Zero is Not successful: the sensor is outside of safe parameters to be zeroed, the display will read Bad Zero.
Repeat section 5.2.1 Zero Adjust making sure to use a cylinder of 20.9% Oxygen.
5.2.2 Gas Span
It is recommended that the Zero Function be performed first.
Enter the maintenance menu. See Figure 5, EX-5100 Maintenance Menu flow chart.
1. Tap the MENU switch once to display Span on the screen.
2. Tap the SELECT switch to perform a Span procedure. The display will alternate between the calibration gas concentration
and a signal level.
NOTE: You can change the Calibration Gas Level. HOLD the magnet over the SELECT switch for 2 – 4 seconds
The MENU switch changes digit indicated by underscore cursor
The SELECT switch locks underscored digit and moves to next digit
3.
4.
5.
6.
Attach the associated calibration gas cylinder to the regulator and calibration cover. See to Figure 3.
Open the valve to apply the calibration gas to the sensor.
Watch for the signal level to stabilize. Refer to Table 4 for typical response times.
Once the signal level has stabilized, the EX-5100 will automatically lock in the calibration data and:
If the Span is successful, Cal OK appears on the display momentarily, then advances to Alarm 1. Remove calibration gas.
To exit maintenance menu tap the MENU switch until Exit appears, then tap the SELECT switch.
If the sensor is outside of acceptable parameters, Bad Span is displayed momentarily, then returns to Span.
Remove calibration gas. Tap the MENU switch until Exit appears, then tap the SELECT switch. Check span gas and
repeat calibration in 30 – 60 minutes.
If the sensor did not respond to gas, Same mV is displayed momentarily, then returns to Span.
Remove calibration gas, tap the MENU switch until Exit appears, then tap the SELECT switch and try calibration
again in 30-60 minutes.
If the sensor will not calibrate See Section 5.4.
NOTE: Some software revisions require the SELECT switch be tapped to accept the signal.
7. Calibration is complete.
Table 4: Calibration Time
Sensor Type
Catalytic
Calibration Gas Concentration
% LEL
Calibration Gas Application Time
1 – 2 minutes
5.2.3 Exit Maintenance Menu
Exit maintenance, by tapping on the MENU switch until Exit appears on the display. Then Tap the SELECT switch to return to
the instrument Normal Gas Display.
11
EX-5100 COMBUSTIBLE
Normal Display Mode
ENMET
0LEL
HOLD the magnet over the MENU switch
for 2 – 4 seconds to enter the
Maintenance Menus
MENU
Exit
MENU
SELECT
Tap the SELECT switch to return to the
Normal Gas Display. See Section 5.2.3
Menu
Select
Tap the magnet over the MENU switch to
cycle through Maintenance Menus
Zero
SELECT
PV:
0
Cal
OK
MENU
OR
Bad ZERO
Span
SELECT
PV:
0
50
MENU
SELECT
Tap the SELECT switch to initiate Zero adjustment
If the Zero signal is within Preset Specs the EX-5100 will display
Cal OK, See Section 5.2.1
If the Zero signal is not within Preset Specs the EX-5100 will
display Bad ZERO
NOTE: Some software revisions require the SELECT switch be
tapped to accept the signal.
NOTE: You can change the Calibration Gas Level.
SELECT HOLD the magnet over the SELECT switch
The MENU switch changes digit indicated by underscore cursor
The SELECT switch locks underscored digit and moves to next digit
See Section 5.2.2
SELECT
Cal
OK
OR
Same
mV
OR
Bad
Alarm1
SELECT
MENU
Sens
Λ 10
SetTDsec
0
Alarm2
SELECT
MENU
Λ 20
SetTDsec
0
Alarm3
SELECT
Apply Calibration Gas until signal value becomes
stable (about 1 to 4 minutes) See Figure 4
If cal is good display will indicate OK or Same
If cal is not within preset “range” display will
indicate Bad Sens
NOTE: Some software revisions require the SELECT switch
be tapped to accept the signal.
Λ 50
To change Alarm set points:
Tap Menu switch until Alarm to be changed is displayed
Tap Select switch to display the set point
The MENU switch: changes digit indicated by underscore
cursor
The SELECT switch: locks in the underscored digit and
moves to next digit
If change is not within range display returns to first digit
If change is within range display moves to Set Time Delay
Use MENU and SELECT switches as above to change time
delay. Between 0 and 5 seconds is allowed
If change is within range display moves to next menu
Λ - Indicates increasing alarm
V - Indicates decreasing alarm
SetTDsec
MENU
0
mA Span
SELECT
100
MENU
To return to Normal Gas Diplay:
Tap MENU switch until EXIT is displayed
Then tap SELECT switch
To change mA Span set point:
Tap the MENU switch until mA Span is displayed
Tap the SELECT switch to display the set point
The MENU switch changes digit indicated by underscore cursor
The SELECT switch locks underscored digit and moves to next digit
Figure 5: EX-5100 Maintenance Menu Flow chart
12
EX-5100 COMBUSTIBLE
ENMET
5.3 Heater Voltage Settings
Heater Voltages are necessary for Catalytic sensors. They are preset at the factory and should not require field adjustment. Do
not adjust these voltages unless specifically instructed to do so by ENMET Technical Support Staff.
CAUTION: Improper adjustment of heater voltages can damage sensors voiding any warranties and also alter the operating
characteristics of the sensor in such a way that the EX-5100 may not respond to it’s target gas.
5.4 Sensor Replacement
CAUTION: Area must be declassified during sensor replacement.
Sensors should be replaced when they can no longer be calibrated. Replacement sensor part numbers are listed in Section 6.0
of this manual. If you do not know the proper part number for your sensor, be sure to have the EX-5100 serial number
available when contacting your Distributor or ENMET Technical Support.
To replace a sensor, it is necessary to open the transmitter housing.
Remove the overlay and screws retaining the PC Board in the enclosure. Refer to Section 3.2, Figure 3.
Remove the sensor connector J8 and sensor
Wire in the new sensor. Refer to the wiring Table in Section 3.2, Figure 3.
After the new sensor has been installed, it is suggested to allow the sensor to stabilize for 24 hours.
A Factory calibration must be performed.
To enter the maintenance menu hold the magnet over the MENU switch for 2 to 4 seconds
The chart below indicates the maintenance menu sequence see Figure 5 for a detailed maintenance menu flow chart.
Example of Display
Function
Normal Display Mode
Measurement of target gas
0LEL
Hold the magnet over the MENU switch for 2 – 4 seconds to enter the Maintenance Menu
The Power/Fault LED will flash Green – Red to indicate the EX-5100 is in Maintenance Mode
To exit the maintenance Menu and return to the Normal Display Mode:
Exit
If intended function Tap the magnet over SELECT switch
POT 2 on PCB
Tap the magnet over the MENU switch to advance to the Zero procedure
For adjusting Zero:
Zero
If intended function Tap the magnet over SELECT switch
Tap the SELECT switch once with the magnet, the display will alternate between [PV: 0] and [Zero]
At this point, tap the MENU switch once with the magnet. The display should now alternate between [Zero] and
[In 300] (+ or – 30). If not then, use POT 2, to adjust to 300(+ or – 30).
NOTE: The EX-5100 will automatically reset the zero point based on a stable signal if [Span] appears before you get the 300 set
then re-enter the zero cal again, to start the clock over.
Once the zero is set you will see [Span] on the display. Tap the menu until [ZERO] is displayed.
Place the magnet over the MENU switch and hold for 2-4 seconds while viewing the Zero menu.
After 2-4 seconds, an F will appear on the far right hand side of the display. The F indicates that the instrument is in Factory
mode.
Perform the calibration Zero and Span procedures as outlined in Section 5.2. Be sure that the F is present when selecting the
Zero and Span functions.
The Factory calibration sets a calibration window for future standard instrument calibrations.
Only perform a factory calibration when installing a new sensor!!
13
EX-5100 COMBUSTIBLE
ENMET
6.0 Replacement Part Numbers
ENMET replacement part numbers:
Description
Part Number
Sensor, Catalytic * (Optional)
03070-001
Sensor, Catalytic * (Standard)
03070-003
Overlay
06000-058
Magnet
50030-001
Calibration Cover
03620-015
Regulator
02506-004
Calibration Gas, Consult ENMET Distributor or ENMET.
Calibration Cover
03620-015
NOTE: The proper calibration cover must be used for the sensor in use, as indicated above. See also Figure 4.
* See Section 3.2 Wiring EX-5100 to a Control Unit on page 4 for identification of sensors.
7.0 WARRANTY
ENMET warrants new instruments to be free from defects in workmanship and material under normal use for a period of one
year from date of shipment from ENMET. The warranty covers both parts and labor excluding instrument calibration and
expendable parts such as calibration gas, filters, batteries, etc... Equipment believed to be defective should be returned to
ENMET within the warranty period (transportation prepaid) for inspection. If the evaluation by ENMET confirms that the
product is defective, it will be repaired or replaced at no charge, within the stated limitations, and returned prepaid to any
location in the United States by the most economical means, e.g. Surface UPS/FedEx Ground. If an expedient means of
transportation is requested during the warranty period, the customer is responsible for the difference between the most
economical means and the expedient mode. ENMET shall not be liable for any loss or damage caused by the improper use of
the product. The purchaser indemnifies and saves harmless the company with respect to any loss or damages that may arise
through the use by the purchaser or others of this equipment.
This warranty is expressly given in lieu of all other warranties, either expressed or implied, including that of merchantability,
and all other obligations or liabilities of ENMET which may arise in connection with this equipment. ENMET neither assumes
nor authorizes any representative or other person to assume for it any obligation or liability other than that which is set forth
herein.
NOTE: When returning an instrument to the factory for service:
Be sure to include paperwork.
A purchase order, return address and telephone number will assist in the expedient repair and return of your unit.
Include any specific instructions.
For warranty service, include date of purchase
If you require an estimate, please contact ENMET.
There are Return for Repair Instructions and Form on the last pages of this manual. This Form can be copied or used as needed.
Manual part number
80003-096
December 2003
MCN-313a, 01/27/04
MCN-323, 10/19/04
MCN-361, 11/30/06
MCN-386, 10/10/07
MCN-416, 04/03/09
14
PO Box 979
680 Fairfield Court
Ann Arbor, Michigan 48106-0979
734.761.1270
Fax 734.761.3220
Returning an Instrument for Repair
ENMET instruments may be returned to the factory or any one of our Field Service Centers for regular repair
service or calibration. The ENMET Repair Department and Field Service Centers also perform warranty
service work.
When returning an instrument to the factory or service center for service, paperwork must be included which
contains the following information:
A purchase order number or reference number.
A contact name with return address, telephone and fax numbers
Specific instructions regarding desired service or description
of the problems being encountered.
Date of original purchase and copy of packing slip or invoice
for warranty consideration.
If a price estimate is required, please note it accordingly and be
sure to include a fax number.
Providing the above information assists in the expedient repair and return of your unit.
Failure to provide this information can result in processing delays.
ENMET charges a one hour minimum billing for all approved repairs with additional time billed to the closest
tenth of an hour. All instruments sent to ENMET are subject to a minimum evaluation fee, even if returned
unrepaired. Unclaimed instruments that ENMET has received without appropriate paperwork or attempts to
advise repair costs that have been unanswered, after a period of 60 days, may be disposed of or returned
unrepaired COD with the evaluation fee.
Service centers may have different rates or terms. Be sure to contact them for this information.
Repaired instruments are returned by UPS/FedEx Ground and are not insured unless otherwise specified. If
expedited shipping methods or insurance is required, it must be stated in your paperwork.
Note: Warranty of customer installed components.
If a component is purchased and installed in the field, and fails within the warranty term, it can be
returned to ENMET and will be replaced, free of charge, per ENMET’s returned goods procedure.
If the entire instrument is returned to ENMET with the defective item installed, the item will be replaced
at no cost, but the instrument will be subject to labor charges at half of the standard rate.
Repair Return Form
Mailing Address:
ENMET
PO Box 979
Ann Arbor, Michigan 48106
Phone Number:
FAX Number:
Shipping Address:
ENMET
Attn: Repair Department
680 Fairfield Court
Ann Arbor, Michigan 48108
734.761.1270
734.761.3220
Your Shipping Address:
Your Mailing Address:
Contact Name: __________________________
Your Phone: _______________________
Your PO/Reference Number: _______________ Your FAX:
_______________________
Payment Terms: K COD
(Check one) K VISA / MasterCard______________________
________
________
Card number
Expiration
Card Code
________
________
Card number
Expiration
Card Code
K American Express______________________
Name as it appears on the credit card___________________________________
Return Shipping Method:
K UPS: K Ground
K 3 Day Select K Next Day Air K ND Air Saver K 2-Day Air
K UPS Account number: ________________________
K Federal Express:
K Ground K Express Saver K P-1 K Standard K 2-Day Air
K FedEx Account number: ________________________
Would you like ENMET to insure the return shipment?
K No
K Yes
Insurance Amount: $_________________
Download PDF