Model Helix
Operation & Maintenance
Manual
PDH-15
PDH-25
PDH-40
PDH-60
PDH-100
PDH-120
Engineering Measurements Company
303.651.0550 • 303.678.7152 Fax
sales@emcoflow.com
TABLE OF CONTENTS
i
Table of Contents
Section 1: Product Introduction
Principle of Operation ........................................................ 1
Equipment Inspection ........................................................ 2
Identification Plate ............................................................. 2
Calibration Sheet ............................................................... 3
EZ-Logic Interface Map ..................................................... 3
Section 2: Mechanical Installation
Site Considerations ........................................................... 4
Mounting ............................................................................ 4
NPT Mount......................................................................... 6
Wafer Mount....................................................................... 6
Start-Up Procedure............................................................ 7
High Temperature Start-Up ............................................... 7
Section 3: Electrical Installation
General .............................................................................. 8
Pulse Output ...................................................................... 8
Analog Output.................................................................... 8
Wiring ................................................................................. 9
MPC Electronics ................................................................ 9
PA1 Preamplifier ................................................................ 9
PAQ Preamplifier ............................................................. 10
Rescaling the PAQ........................................................... 11
Zero and Span Adjustment for PAQ ................................ 12
Section 4: Electrical Installation EZ-Logic Electronics
General ............................................................................ 13
Hardware Configuration................................................... 13
Mounting Electronics ....................................................... 14
Field Wiring Access ......................................................... 14
Grounding the Meter........................................................ 14
VDC Power Supply .......................................................... 14
Analog Output (JP1 installed or no jumpers) .................. 14
Pulse Output Only (JP2 installed) ................................... 15
Pulse Output Only (No Jumpers) .................................... 15
Remote Wiring ................................................................. 16
Section 5: EZ-Logic Programming
Introduction to EZ-Logic................................................... 17
Keypad Activation ............................................................ 17
Movement Through the Interface .................................... 17
How to Alter Real Number Data ...................................... 19
How to Alter Preset Data ................................................. 19
Top Display Menu ............................................................ 20
Accessing Programming Submenus ............................... 20
The Basic Menu............................................................... 21
The Output Menu............................................................. 22
The Fluid Menu ................................................................ 24
The Sensor Menu ............................................................ 24
The Reset Menu .............................................................. 25
The Service Menu ........................................................... 26
The Password Menu ........................................................ 27
The HART Menu .............................................................. 27
The Display Menu............................................................ 28
Exiting Programming Submenus..................................... 29
Appendix A
Helix General Specification .................................................
Appendix B
Glossary...............................................................................
Appendix C
How to Contact Us ...............................................................
Appendix D
List of Figures ......................................................................
List of Tables........................................................................
Index
PRODUCT INTRODUCTION
Section 1
Section 1:
Product
Introduction
Principle of Operation
The positive displacement Helix flowmeter
measures process fluid by using two uniquely
nested, counter-rotating, non-contacting helical rotors as the measuring element. The rotors entrap a discrete volume of liquid, or a
liquid pocket, and provide passage of each
pocket through the flowmeter. The passage
of each pocket causes the rotors to rotate in
a synchronous fashion at a velocity that is
proportional to the volume of flow.
The design of the rotor surfaces provides
the optimum ratio of longitudinal to lateral
sealing, thus minimizing fluid slippage or
loss. This ensures maximum accuracy with
minimum pressure drop.
A spur gear is mounted on one rotor shaft
below a magnetic pickup coil. As each gear
tooth passes under the pickup coil, it breaks
the magnetic field, generating a sinusoidal
pulse output.
Three electronics options provide an alternative to the sinusoidal pulse output. One
preamplifier, the PA1, senses the pickup
coil signal, amplifies the signal, and produces a frequency output. Another preamplifier, the PAQ, will produce a 4-20 mA
current output. The third option, the “Smart,”
EZ-Logic™ microprocessor-based electronics
translates the pickup coil signal into a volumetric flow rate in user-defined engineering
units. The 8-character, 2-line, local display
alternates between flow rate and totalized
flow and enables local programming. With
EZ-Logic, the Helix has a 4-20 mA current
output and a frequency/pulse output.
Equipment Inspection
Upon receiving your EMCO equipment, verify that all materials on the packing list are
present. Check for possible shipping damage
and notify the freight carrier or your EMCO
representative if any has occurred.
Identification Plate
There is a permanent identification plate
(I.D.) attached to the Helix flowmeter body
(see Figure 1-2). There is also an I.D. at-
Magnetic
Pick-up
Coil
Non-Contacting Rotors
Liquid Pocket
Spur Gear
Bearings Support
Timing Gear
FLOW
Figure 1-1. Principle of Operation
1
PRODUCT INTRODUCTION
2
Section 1
tached to the condulet (see Figures 1-3 and
1-4). Verify that this information is consistent with your metering requirements. Any
discrepancies in this information should be
resolved with your EMCO representative before you install the flowmeter.
Calibration Sheet
Save the calibration data sheet when unpacking your new meter. This is important for
monitoring the performance of your meter.
EZ-Logic Interface Map
If your Helix flowmeter is supplied with the
“LOC-TOT” option, then your Helix flowmeter is equipped with EZ-Logic electronics. EZ-Logic is a menu-driven interface that
enables local programming. An EZ-Logic
interface map is included with your Helix
flowmeter. This map shows how the meter
has been programmed at the factory. See
Figure 5-3 for an example of an EZ-Logic
interface map. If your application changes,
contact your EMCO representative for an
updated map.
Figure 1-2. I.D. Plate. All Helix flowmeters have this I.D.
attached to the meter body.
Figure 1-3. I.D. Plate. Helix flowmeters equipped with the
“MPC ”, “PA1”, or “PAQ ” output signal options have this
I.D. attached to the back of the condulet.
Figure 1-4. I.D. Plate. Helix flowmeters equipped with the
“LOC-TOT ” output signal option, also called EZ-Logic electronics, have this I.D. attached to the top of the condulet.
MECHANICAL INSTALLATION
Section 2
Section 2:
Mechanical
Installation
Site Considerations
In selecting a site to install your Helix flowmeter, it is recommended that the following
guidelines should be observed:
Vibration
Choose a location with minimal pipeline vibration. If necessary, support the pipe at either end of the meter to prevent excessive
movement.
Operating Temperature Limits
Model
Code
°F
°C
450
– 40 to 450
– 40 to 232
800
– 40 to 800
– 40 to 427
Ambient Temperature Limits
MPC; PA1;
– 40 to 140
PAQ
LOC-TOT
32 to 140
– 40 to 60
0 to 60
Temperature
Keep the flowmeter within the operating and
ambient temperature range. See Table 2-1.
Table 2-1. Operating and Ambient Temperature Limits for the Helix Flowmeter
Vertical Flow
If the pipeline is vertical, then the preferred
direction of flow is upward for optimum
flowmeter performance. See Figure 2-1.
Mounting
The steps below should be followed when
installing the Helix Flowmeter:
Flush Pipe
Before installing the Helix transducer, wash
and clean the inside of the pipe with compressed air, steam, or other cleaning agent.
This is particularly important with new pipelines.
Helix
Flow Direction
The words “IN” and “OUT” on the inlet and
outlet of the Helix flowmeter indicate the
correct direction of flow.
Filtration
The Helix flowmeters are designed to have
minimum clearance between the rotor surfaces; thus, filtration is recommended to
maximize meter longevity. A filter should be
installed upstream and adjacent to the Helix
flowmeter to protect the meter from damage
caused by foreign material, such as dirt, pipe
scale, weld spatter, etc. see Table 2-2 for
recommended filtration.
Valves
Valves should be installed to facilitate the
removal of the transducer and strainer. It
FLOW
Figure 2-1. Vertical Flow. If the pipeline is
vertical, then the preferred direction of flow is
upward.
3
MECHANICAL INSTALLATION
4
Section 2
is recommended that bypass valves be installed as shown in Figure 2-2. The bypass
allows filter cleaning or transducer removal
without shutting down the fluid upstream.
These valves also permit system start-up
when the transducer is used with high temperature liquids (above 150 °F [66 °C]) and
exposed to initial thermal shocks.
Caution: When the lines are filled with
air, overspeeding and running the transducer without lubrication will damage
transducer components.
Pumps
Install the Helix flowmeter on the discharge
side of a pump whenever possible. Where
highly-pulsating flows (such as those at the
outlet of a high pressure positive displacement piston pump) occur, it is recommended
that a piston- or bag-type accumulator, having at least three times the volume of the
displacement per revolution of the flowmeter
selected, be installed immediately upstream
of the transducer to minimize the pressure
drop across the flowmeter.
Filtration
Model
Size
in (mm)
US
Mesh
Microns
PDH-15
1.5 (40)
30
590
PDH-25
2.5 (60)
20
840
PDH-40
4 (100)
20
840
PDH-60
6 (150)
10
2,000
PDH-100 10 (254)
10
2,000
PDH-120 12 (356)
10
2,000
Table 2-2. Recommended Filtration for the
Helix Flowmeter
FLOW
Valve 1
Filter
Helix
Valve 2
Valve 3
Figure 2-2. Recommended Valve Placement. To facilitate the removal of the transducer and strainer, it is recommended that bypass valves be installed as shown.
Gaskets
Use ANSI standard gaskets which meet the
pressure and flow requirements of the installation.
Caution: Meter failure will block the flow
path. In applications where it is essential
to have flow at all times, install a differential pressure transmitter across the
flowmeter (See Figure 2-3). If the pressure drop across the flowmeter is to exceed 100 psid, the switch should trigger
an alarm. The flowmeter should then be
removed from the line using the bypass
system and inspected for possible overrange or meter failure.
Figure 2-3. Recommended Differential Pressure
Switch Placement. In applications where it is essential to
have flow at all times, a differential pressure transmitter
should be installed as shown, as meter failure will block
the flow path.
MECHANICAL INSTALLATION
Section 2
NPT Mount
Helix flowmeter models PDH-15 and
PDH-25 (1.5 and 2.5 in. sizes) can be
mounted in the line using the available
female threaded-end connections.
Caution: When operating pressures are
greater than 750 psi, the meter must be
installed as a wafer style using appropriate ANSI rated flanges.
Wafer Mount
All Helix flowmeters can be installed using
a wafer mount. Models PDH-15 through
PDH-60 (1.5 thru 6 in. sizes) should be
mounted between 300# or higher rated ANSI
flanges. Models PDH-100 and PDH-120 (10
and 12 in. sizes) should be mounted between
600# or higher rated ANSI flanges.
FLOW
Place the flowmeter between the flanges.
Install bolts. Tighten all bolts.
Note: Bolts for wafer mounting are not
normally supplied with the meter but are
optionally available from EMCO.
Start-Up Procedure
(refer to Figure 2-2)
This start-up procedure is for a normal
start-up, as opposed to a start-up for high
temperature service (liquids above 150 °F
[66 °C]). After the transducer has been
mounted in the line, slowly allow the liquid
to flow in the bypass piping section to clear
the line of foreign particles. After the lines
are cleaned, proceed as follows:
Step 1. Slowly open Valve #1.
Step 2. Slowly open Valve #2.
Step 3. Completely close Valve #3.
High Temperature Start-Up
For high temperature service (liquids above
150 °F [66 °C]), the following start-up procedure is required to prevent thermal shock
damage to the transducer.
Use the following equation to determine the
warm-up time:
t = (D) • (T-125) / 10
Figure 2-4. Wafer Mount Installation
Filtration
Model
Size
in (mm)
US
Mesh
Microns
PDH-15
1.5 (40)
30
590
PDH-25
2.5 (60)
20
840
PDH-40
4 (100)
20
840
PDH-60
6 (150)
10
2,000
PDH-100 10 (254)
10
2,000
PDH-120 12 (356)
10
2,000
Table 2-2. Recommended Filtration for the
Helix Flowmeter
5
MECHANICAL INSTALLATION
6
Section 2
where
t = warm-up time (minutes)
D = meter size (inches)
T = operating temperature (°F)
Filtration
Model
Size
in (mm)
US
Mesh
Microns
PDH-15
1.5 (40)
30
590
Verify that Valve #1 and #2 are closed (refer
to Figure 2-1) and proceed as follows:
PDH-25
2.5 (60)
20
840
PDH-40
4 (100)
20
840
Step 1. Open Valve #3 in gradual steps until
the bypass piping is at the operating temperature and Valve #3 is fully open.
PDH-60
6 (150)
10
2,000
PDH-100 10 (254)
10
2,000
PDH-120 12 (356)
10
2,000
Step 2. With Valve #3 fully open and
Valve #2 closed, slightly open Valve #1.
Keep Valve #1 slightly open for the
warm-up time calculated above. Fully open
Valve #1.
Step 3. Open Valve #2 approximately 5%
(just slightly), allowing flow through the
transducer.
Caution: If the transducer rotors bind or
make excessive noise at this time, DO
NOT CHANGE VALVE POSITIONS. When
temperature has fully stabilized within
the transducer, normal operation will occur. Do not open Valve #2 any further until the transducer rotors are turning freely.
Step 4. With the transducer rotors operating
normally, gradually open Valve #2 in small
steps until the valve is fully open.
Step 5. Gradually close Valve #3.
Table 2-2. Recommended Filtration for the
Helix Flowmeter
ELECTRICAL INSTALLATION
Section 3
Section 3:
Electrical
Installation
General
Four different transmitter/preamplifier options are available for the Helix flowmeter.
Refer to the model code on the identification
tag of your Helix flowmeter to verify
the type of transmitter/preamplifier supplied.
This section describes three of these four
options: “MPC”; “PA1”; and “PAQ”. The
“LOC-TOT” option, also referred to as
EZ-Logic electronics, is described in
Section 4, p. 11–14.
Pulse Output
Two output signal options produce a pulse
output. The first option, “MPC” in the model
code, is a sinusoidal pulse output. The second option, “PA1” in the model code, is a
preamplifier that produces a 10 VDC peakpeak square wave pulse output. Both frequencies are proportional to the flow rate of
the fluid according to the following equation:
Q = ( F / Kf ) • 60
where
Q = flow rate in gallons/minute
F = frequency output in pulses/second (Hz)
Kf = meter calibration K-factor
in pulses/gallon
Analog Output
One output signal option provides a current,
analog output. The analog preamplifier
(“PAQ” in the model code) provides a current output proportional to the flow rate. The
PAQ preamplifier is scaled to provide an
output so that:
4 mA = 0 flow
20 mA = maximum flow (specified by user)
The actual flow rate may be determined by
the following equation:
Q = ( I - 4 / 16 ) • Qmax
where
Q = flow rate in gallons/minute
I = current (mA) output from the flowmeter
Qmax = maximum user specified flow rate in
gallons/minute
7
ELECTRICAL INSTALLATION
8
Section 3
Wiring
To access the terminal board to make the
wiring connections, remove the cap of the
electrical housing and feed the necessary
wires through the condulet opening. Make
the appropriate wiring connections as described for the output signal option with
which the Helix flowmeter is supplied.
Note: Use shielded cables and appropriate conduit to shield the output and deliver a signal as noise-free as possible.
MPC Electronics
Sinewave Pulse/Frequency Output
Use a #18 AWG two-conductor shielded
cable and make connections as shown in
Figure 3-1. If the distance between the transducer and the receiving electronic unit is
more than 50 feet (15.2 meters), a preamplifier must be used.
PA1 Preamplifier
Squarewave Pulse/Frequency Output
Use a #18 AWG three-conductor shielded
cable and make connections as shown in Figure 3-2.
PAQ Preamplifier
0 to 2500 Hz
30 mV to 30 V
Sinusoidal
Figure 3-1. MPC Signal Output Wiring Diagram
4-20 mA Output
Use a #18 AWG three-conductor shielded
cable and make connections as shown in Figure 3-3.
Rescaling the PAQ
It may be necessary to rescale the PAQ preamplifier in the field. Rescaling must be done
if equipment changes have been made. For
example, the PAQ must be rescaled if a replacement rotor is to be used or if the Helix
is to be moved to a different location.
—
+
To scale the PAQ, use the following equation:
Ftmax = Ks • maximum flow rate
Figure 3-2. PA1 Signal Output Wiring Diagram
where
Ftmax = maximum flow rate at which the output is 20 mA. Ftmax is the four digit
setting on the PAQ.
Ks = system K-Factor (available from
EMCO-supplied with application information sheet)
SF = maximum flow rate in engineering
units/second.
ELECTRICAL INSTALLATION
Section 3
Example: Required output from the PAQ is
such that 20 mA must represent 100 gpm
(gallons per minute). From the EMCO application information sheet, Ks is given as
1500 pulses/gallon.
901
456
78
23
Determine Ftmax...
PAQ
+
–
First, the maximum flow rate must be converted to gallons per second.
Maximum flow rate = 100/60 = 1.66 gps
–
Ftmax = Ks • maximum flow rate
Ftmax = 1500 • 1.66 = 2490 Hz
Ftmax = 2490 Hz
+
Vs
18 to 60 Vdc
Figure 3-3. PAQ Signal Output Wiring Diagram
Next, set the four digit BCD switch setting
on the PAQ to 2490. See Figure 3-4.
The rescaling of the PAQ is now complete.
456
456
456
23
23
456
78
23
78
901
78
901
78
901
The PAQ is factory calibrated and adjusted
for optimum performance. Normally, the
PAQ does not require readjustments. The
zero and span potentiometers (see Figure 3-5)
may only be used to fine tune or recalibrate
the PAQ.
901
23
SET TO MAXIMUM HELIX FREQUENCY
PAQ
HELIX METER TWO-WIRE
ANALOG PREAMPLIFIER
COIL
+
Figure 3-4. PAQ Switch Setting
Adjust the zero and span using the following
procedure:
456
456
456
456
23
23
Step 5. Apply the full-scale frequency (same
as the switch setting value) and turn the span
adjustment potentiometer to obtain 20 mA.
Verify that the frequency recorded by the
frequency counter is the expected full-scale
frequency.
23
Step 4. Without frequency supplied to the
PAQ, turn the zero adjustment potentiometer
to receive 4 mA.
78
9 01
Step 3. Set the digital multi-meter to record
the mA output from the PAQ.
78
SET TO MAXIMUM HELIX FREQUENCY
EMCO
Step 2. The frequency generator should be
set to provide a frequency with an amplitude
of 2 mV to 10 V.
78
9 01
9 01
78
9 01
Step 1. Obtain a 24 VDC power supply, frequency generator, digital multi-meter, and
frequency counter. Make connections to the
PAQ as shown in Figure 3-6.
23
Zero and Span
Adjustment for PAQ
PAQ
460162
SPAN ADJ.
HELIX METER TWO-WIRE
ANALOG PREAMPLIFIER
COIL
1 2
+
3
–
4
SIGNAL OUTPUT
ZERO ADJ.
Zero
Span
R-Select
Freq. Test
Points
Figure 3-5. Zero and Span Adjustment Location
9
ELECTRICAL INSTALLATION
Section 3
Frequency
Generator
456
78
456
456
456
9 01
78
9 01
78
9 01
9 01
78
23
135
23
23
Step 6. Repeat steps 3 and 4 until no further
calibration is necessary.
23
10
PAQ
Preamplifier
to terminal 2
to terminal 1
to terminal 4
to terminal 3
+
135
+20.00
Frequency
Counter
+
Power Supply
15 to 45 VDC
–
Digital
Multimeter
Figure 3-6. PAQ Calibration Connections
ELECTRICAL INSTALLATION FOR EZ-LOGIC ELECTRONICS
Section 4
Section 4:
Electrical
Installation
for EZ-Logic
Electronics
General
Wiring and conduit must be installed in accordance with national and local laws, standards, codes, and industry practices to avoid
personal injury or property damage from
electrical shock, contact with live electrical
systems, or ignition of combustible material
or explosive gases, which can be ignited by
electrical arcing.
Hardware Configuration
The installation of jumpers JP1 and JP2 controls the output selection. Jumper positions
JP1 and JP2 indicate pulse output configuration. JP1 is installed at the factory. These
jumpers are located on the filter board, which
is the base board of the electronic stack (see
Figure 4-2).
Mounting Electronics
Electronics can be ordered for either integral
or remote mounting. With integral mounting,
the sensor and electronics are manufactured
as one unit. The ambient temperature must
be less than 140 °F (60 °C) for integral
mounting.
With remote mounting, the electronics are
manufactured as a unit separate from the
flow sensor. Remote electronics can be
mounted on either a pipe or a wall. The
distance between the sensor and the electronics must not exceed 50 feet (15.2 meters).
If remote mounting is specified in an order,
EMCO supplies 30 feet (9.1 meters) of cable
and pipe mounting clamps.
Field Wiring Access
Remove the field wiring condulet cap to
access the field wiring terminal block for
power and signal wiring. See Figure 4-3.
Grounding the Meter
To ensure proper electrical noise rejection,
connect ground strap (size 8 AWG or larger
wire) from the ground screw attached to the
outside of the electronics enclosure (see Figure 4-4) to a known earth ground (not the
pipe).
Figure 4-1. Filter Board for Helix
11
ELECTRICAL INSTALLATION FOR EZ-LOGIC ELECTRONICS
12
Section 4
Figure 4-2. Exploded Electronics Assembly
VDC Power Supply
The EZ-Logic electronics requires a 24-volt
power supply. For proper power and signal
wiring, shielded cable should be at least #18
AWG or larger. Connect shield wire from
shielded cable to earth ground at power supply. Insulate other end of shield wire from
electrical condulet at the meter.
Analog Output
(JP1 installed or no jumpers)
Scalable 4–20 mA output, 2-wire principle.
Load resistor may be installed on either supply or the return line. Vs = 18 to 40 VDC.
Permissible load resistance values shown are
in Figure 4-5.
Pulse Output Only
(JP2 installed)
This option is for pulse output only using
a low impedance electromechanical counter.
Vs = 18 to 40 VDC. Vpulse will vary from
0-1 V to Vs{Rc/(Rc+6800)}. (Figure 4-7).
Figure 4-3. Field Wiring Access
Pulse Output Only
(No Jumpers)
This is an open collector pulse output
using a high impedance electronic counter.
Vs = 18 to 40 VDC. Vpulse will vary from
0-1 V to Vs{Rc/(Rc+Rpulse)}. (Figure 4-8).
Remote Wiring
Output wiring from remote electronics is
identical to output wiring from integral electronics. Wiring from the remote electronics
condulet to the electrical junction box must
be performed in the field.
Connect the remote cable to the terminal
block in the junction box as shown. If nonconductive conduit is used, attach a ground
Figure 4-4. Ground Screw Location
ELECTRICAL INSTALLATION FOR EZ-LOGIC ELECTRONICS
Section 4
strap from the ground screw on the remote
electronics condulet. Run rigid conduit from
conduit entry on the remote condulet to the
condulet mounted on the meter body.
Note: If the remote cable is cut to a
shorter length, insulate shield with tape
at electrical junction box.
For all equations:
Vpulse = output voltage
Vs
= power supply voltage:
18 to 40 VDC
Vc
= minimum required voltage
to trip counter
Rc
= counter impedance
Rc ≥ 6800
Rpulse ≥
Vc
Vs –Vc
Vs
0.16
Figure 4-5. Load Resistance Graph
Rload
+
–
MADE IN USA
+ P –
Figure 4-6. Wiring Diagram for Analog Output
(JP1 jumper or no jumpers installed)
Figure 4-7. Wiring Diagram for Pulse Output
(JP2 jumper installed)
Figure 4-8. Wiring Diagram for Pulse Output
(no jumpers installed)
Vs
13
ELECTRICAL INSTALLATION FOR EZ-LOGIC ELECTRONICS
14
Section 4
Figure 4-9. Wiring Diagram for Remote Mounted Electronics
EZ-LOGIC PROGRAMMING
Section 5
Section 5:
EZ-Logic
Programming
Introduction to EZ-Logic
EZ-Logic is a menu driven user interface. It
consists of the top display menu and nine
programming submenus, which are grouped
by functionality. The submenu groups are:
The Configure group, which configures the
flowmeter for operation in a specific application and includes:
The Basic Menu
The Output Menu
The Fluid Menu
The Sensor Menu
Basic
Menu
C
Icon
Figure 5-1. Group Icon. Each functional group has its
own icon to help you easily identify where your location
within the interface.
The Diagnose group, which contains information relating to flowmeter maintenance
and includes:
The Reset Menu
The Service Menu
The Personalize group, which allows you
to customize the flowmeter by choosing display parameters or changing the password
and includes:
The Password Menu
The HART Menu
The Display Menu
Each group has it's own icon, Configure ‘C’,
‘D’ and ‘P’ for ‘C’, ‘D’ and ‘P’ respectively, Diagnose “D”, and Personalize “P”,
the icon appears in the upper or lower right
hand corner of the display (see Figure 5-1).
You can identify your location within the
interface map (see Figure 5-4) from the displayed icon.
Keypad Activation
The keypad can be manipulated by either
removing the condulet cap and depressing
the membrane keys using your fingers or
using the magnet wand to activate the keys
through the condulet cap, without sacrificing
the explosion proof rating. To activate keys,
EMCO
Figure 5-2. Manual Manipulation of the Keypad.
Remove the condulet cap and depress the membrane
keys using your fingers.
15
EZ-LOGIC PROGRAMMING
Section 5
place magnet wand on the targeted area and
remove (see Figure 5-3).
Caution: Do not place magnet wand near
magnetically sensitive items such as:
credit cards, card key, etc...
EMCO
The interface was designed to be simple.
For example, to go right across the submenu
headings press the right arrow key . To
move up or down through each submenu use
the down
or up
arrow keys.
EMCO
Movement Through
the Interface
EMCO
EMCO
16
Note: Each submenu is setup as a loop.
Once you reach the bottom (using the
down arrow key) depressing the same
key will move you to the column heading.
The enter key
is used to exit the programming submenus.
How to Alter
Real Number Data
To alter data in a selected screen, press the
enter key. A cursor will appear under the
first digit. The blinking icon will disappear
when altering data.
To move the cursor to the desired digit, press
the right arrow key .
To increase the value of the digit, press the
up arrow key. Possible values for each position are: 0-9, blank space, or a decimal point.
To decrease the value of the digit, press the
down arrow key.
Figure 5-3. Magnetic Manipulation of the Keypad. Activate the keys without removing the condulet cap by placing the magnetic wand on the target areas shown.
Figure 5-4. EZ-Logic Interface Map
Work Order #
05 Sec
10 kHz
Freq TC
05 Sec
Customer P.O. #
Helx freq
Freq TC
Scl freq
Freq max
Pulse +
Puls unt
ft3
Per puls
10.0000
Puls wth
50 mSec
ft3
Per puls
10.0000
Puls wth
50 mSec
Density
62.4000
Fluid
menu C
Password
1000
Pulse –
Puls unt
4-20 mA
On
4-20 TC
05 sec
Freq out
Helx freq
Flw unit
gal/min
Tot unit
x1
gal
Max flow
37.4025
2 SEC
Output
menu C
Error
None
30.421
gal/min
103.42
x1
gal
10%
Display
Menu
Basic
menu C
FLUID:
Per puls
10.0000
ft3
Transit
Puls unt
Size
1 in.
Meter K
2400.00
000000 –
000 WO#
Tag #
00000000
Sensor
menu C
Off
Version
1.00
Error
codes
Sub Freq
0000 Hz
4-20 Out
0.000%
Freq Out
00000 Hz
Helx Freq
0 Hz
4 mA Cnt
factory set
20mA Cnt
factory set
Service
menu D
Set Pass
0000
Password
menu P
HART
On
HART
menu P
Factory programmed to fit specific application.
Direct
Total
Reset N
Defaults
No
Reset
menu D
Application
Data
Exit
No
EZ Map Version #
8 digits
Scan
On
ScanTime
05 Sec
Flow Res
FlowRate
Show
Total
Hide
BarGraph
Show
Err Code
Show
TotReset
Yes
Dsply TC
05 Sec
Display
menu P
SavChng?
Yes
EZ-LOGIC PROGRAMMING
Section 5
Customer Name
17
EZ-LOGIC PROGRAMMING
18
Section 5
After the desired alterations are made, press
the enter key to store the new value. The
blinking icon will reappear.
How to Alter Preset Data
To alter data in a selected screen, press the
enter key. A cursor will appear. The blinking
icon will disappear when altering data.
To change the volume unit, press the up key.
To change the time unit, press the down key.
After desired alterations are made, press the
enter key to store the new units. The blinking
icon will reappear.
Top Display Menu
The top display menu appears when the meter is powered up. This menu scans through
up to four screens, the possible screens are:
Flow Rate
Continuously displays the actual flow rate in
the units selected in the Flow Unit screen
under the Basic Menu.
Totalized Flow
Continuously displays totalized flow in the
units selected in the Totalizer Unit screen
under the Basic Menu.
EZ-LOGIC PROGRAMMING
Section 5
Bar Graph
Displays the percentage of full scale flow
and a corresponding bar graph.
Error Code
The electronics monitor and record several
possible errors that may occur during operation. Push the right arrow key to scroll
through errors.
Accessing Programming
Submenus
To enter the programming submenus, press
the right arrow key for 2 seconds. Enter the
correct password. If the correct password is
entered, the display will read “Full Access”.
If an incorrect password is entered, the display will read “Read Only” and the user will
not be able to alter the programming.
Note: The flowmeter ships from the factory without a password; “Full Access”
will automatically be permitted until a
password is entered. See the Set New
Password screen under the Password
Menu to enter a password.
Note: While accessing the programming
submenus, the meter will be “off line.”
The last values of the totalizer and the
flow rate will be stored until the meter is
returned to the display menu.
The Basic Menu
Flow Unit
Sets the units for the displayed flow rate and
the maximum flow below. Press the up arrow key to scroll through the volume units.
Possible flow units: gallons, bbl, cm3, liters,
m3, lb, tons, grams, kilograms, metric tons,
standard ft3, normal m3, ft3, and in3. Press the
down arrow key to scroll through the time
units. Possible time units: minutes, hours,
days, and seconds.
19
EZ-LOGIC PROGRAMMING
20
Section 5
Display
Menu
2 SEC
30.421
gal/min
103.42
×1
gal
10%
Correct
Password
Incorrect
Password
Password
1000
Password
0234
Full
Access
Read
Only
Basic
menu
Basic
menu
Error
code 4
Figure 5-5. Password Access to Submenus
Totalizer Unit
Sets the units for the displayed totalized
flow. Select a multiplier to slow the counting
of the totalizer. Press the up arrow key to
scroll through multipliers. Possible multipliers: ×1, ×10, ×100, ×103. Press the down
arrow key to scroll through the flow units.
Possible flow units: gallons, bbl, cm3, liters,
m3, lb, tons, grams, kilograms, metric tons,
standard ft3, normal m3, ft3, and in3.
Maximum Flow
Maximum flow is entered in the units programmed in the Flow Unit screen. This value
sets the 20 mA point for the analog output
and the maximum frequency for the scaled
frequency output.
The Output Menu
Analog Output
Linear analog output. 4 mA = 0 flow; 20 mA
= maximum flow. Toggle on/off with the up
and down arrow keys.
EZ-LOGIC PROGRAMMING
Section 5
Analog Output Time Constant
Dampens the analog output. Possible time
constants: from 0 to 99 seconds.
Frequency/Pulse Output Setup
Selects the type of Frequency/Pulse output.
Possible output options: Scaled Frequency,
Helix Frequency, Direct Frequency, Pulse –,
Pulse +, and Transition.
Figure 5-6. Linear Analog Output
To disable the frequency/pulse output, select
“off.” The remainder of the Output menu will
change based on the output option selected.
Refer to the EZ-Logic Map (see Figure 5-4).
Note: When connecting any EMCO flow
processor to the Helix flowmeter, select
helix frequency (Helx freq) as the Output
Setup.
Scaled Frequency Output
The output frequency is a linear output
(see Figure 5-7).
Maximum Output Frequency
Sets the maximum output frequency.
Possible settings: 500 Hz, 1 kHz, 3 kHz,
5 kHz, or 10 kHz.
Frequency Output Time Constant
Dampens the frequency output. Possible
time constants: from 0 to 99 seconds.
Helix Frequency Output
The output frequency is the processed frequency with a 50% duty cycle, where Flow =
Figure 5-7. Linear Scaled Frequency Output
21
EZ-LOGIC PROGRAMMING
22
Section 5
(Freq/K-factor)(ft3/s). Use this output when
connecting to a flow processor.
Frequency Output Time Constant
Dampens the frequency output. Possible
time constants: from 0 to 99 seconds. Default
is 5 seconds.
Direct Frequency Output
The output frequency is the raw frequency.
This is an instantaneous representation of the
flow, where Flow = (Freq/K-factor)(ft3/s).
Pulse –
The output frequency is one negative pulse
for each time the totalizer increments. The
totalizer increment is set in the Per Pulse and
Pulse Unit screens.
Per Pulse
Sets the amount of fluid that passes through
the meter per pulse.
Pulse Unit
Possible units: gallons, bbl, cm3, liters, kiloliters, m3, lb, tons, grams, kilograms, metric
tons, ft3, and in3.
Pulse Width
Possible pulse width settings: 5 msec,
50 msec, 500 msec, 1 sec, 5 sec. Programmed
pulse width must be less than actual output
signal pulse width at maximum flow rate.
EZ-LOGIC PROGRAMMING
Section 5
Pulse +
The output frequency is one positive pulse
for each time the totalizer increments. The
totalizer increment is set in the Per Pulse and
Pulse Unit screens.
Per Pulse
Sets the amount of fluid that passes through
the meter per pulse.
Pulse Unit
Possible units: gallons, bbl, cm3, liters, kiloliters, m3, lb, tons, grams, kilograms, metric
tons, ft3, and in3.
Pulse Width
Possible pulse width settings: 5 msec,
50 msec, 500 msec, 1 sec, 5 sec. Programmed
pulse width must be less than actual output
signal pulse width at maximum flow rate.
Transition
The output frequency is one transition from
low state to high state for each time the totalizer increments. The increment is set in the
Per Pulse and Pulse Unit screens.
Per Pulse
Sets the amount of fluid that passes through
the meter per pulse.
23
EZ-LOGIC PROGRAMMING
24
Section 5
Pulse Unit
Possible units: gallons, bbl, cm3, liters, m3,
lb, tons, grams, kilograms, metric tons, standard ft3, normal m3, ft3, and in3.
The Fluid Menu
Fluid Density
This value represents the actual fluid density
of the application in lbm/ft3.
The Sensor Menu
Size
Toggle through 1.5 to 12 in. sizes.
Calibration Factor
This value represents the calibrated meter
K-factor in pulses/gallon. (The K-factor
value is also located on the meter serial
tag I.D.)
Serial
Meter body serial number. (Cannot be
changed) (Also located on the meter serial
tag I.D.)
Tag Number
Meter tag number. (Cannot be changed)
The Reset Menu
Totalizer Reset
Reset the totalizer by selecting Y (yes).
Set Defaults
Reset the meter to the original programmed
defaults shown in Figure 5-8 by selecting
EZ-LOGIC PROGRAMMING
Section 5
“Yes.” Selecting “Yes” will erase existing
meter programming.
The Service Menu
Substitute Frequency
Substitute frequency simulates a helix frequency for the display and the output. The
substitute frequency value must be set to
zero before meter returns to actual frequency
input.
Simulated Analog Output
Simulation of the analog output: 0% flow =
4 mA and 100% flow = 20 mA. Can be set
at any value between 0 and 100%. Operates
only while in this display.
Simulated Frequency Output
Simulation of the frequency output,
0 –10,000 Hz. Only possible if frequency/
pulse output setup is either the scaled frequency “Scl freq” or the helix frequency
“Helx freq” options. Operates only while in
this display.
Helix Frequency
The raw input frequency from the sensor.
(Cannot be changed.)
0 Hz
4 mA Calibration Value
Sets the number of units the microprocessor
sends to the current output circuit to generate
4 mA.
25
EZ-LOGIC PROGRAMMING
26
Section 5
20 mA Calibration Value
Sets the number of units the microprocessor
sends to the current output circuit to generate
20 mA.
To set the 4 mA and 20 mA Calibration
Values, access the 4 mA Calibration Value
screen. Adjust the microprocessor count until the multimeter value deviates from 4 mA
by no more than ± 0.012 mA. Press enter.
Repeat in the 20 mA Calibration Value
screen.
Software Revision
The revision of the software used.
Self Diagnostics
Displays current error codes. When the error
condition no longer exists, the error code is
cleared. Push the right arrow key to scroll
through errors.
Error
code 1
Basic
menu C
Flw unit
gal/min
Tot unit
x1
gal
Max flow
40.00
Output
menu C
4-20 mA
On
4-20 TC
05 sec
Freq out
Helx freq
Fluid
menu C
Density
62.4000
Helx freq
Freq TC
05 Sec
Figure 5-8. Programmed Defaults
Sensor
menu C
Size
1 in.
Meter K
2400.00
000000 –
000 WO#
Tag #
00000000
Reset
menu D
Total
Reset N
Defaults
No
Service
menu D
Sub Freq
0000 Hz
4-20 Out
0.000%
Freq Out
00000 Hz
Helx Freq
0 Hz
4 mA Cnt
1270
20mA Cnt
6900
Version
1.00
Error
code 1
Password
menu P
HART
menu P
Set Pass
0000
HART
On
Display
menu P
FlowRate
Show
Total
Show
BarGraph
Show
Err Code
Show
TotReset
Yes
Dsply TC
05 Sec
Scan
Off
Flow Res
3 digits
EZ-LOGIC PROGRAMMING
Section 5
The Password Menu
Password
Menu
P
Set New Password
Programs the password for future protection
of the meter. If 0000 is selected, no password
is required for “Full Access.”
Condulet Head
(Field Wiring Side)
Set Pass
1000
The HART® Menu
Multimeter
HART® Enable/Disable
®
HART
Menu
P
Turns the meter’s HART communication
abilities on or off.
Power Supply
HART
On
The Display Menu
Show or Hide the flow rate in the top
display menu.
FlowRate
Show
Show or Hide the totalizer in the top
display menu.
Total
Hide
Show or Hide the bar graph in the top
display menu.
Show or Hide the error codes in the top
display menu.
Err Code
Show
If yes is selected, push the enter key once
to reset the totalizer, when the totalizer is
displayed in the top display menu.
TotReset
Yes
Dampens the displayed flow rate.
Turns the automatic scrolling of the display
menu off or on. If off is selected, then use the
Figure 5-9. Wiring diagram for 4-20 mA
output calibration
27
EZ-LOGIC PROGRAMMING
28
Section 5
right arrow key to manually toggle through
the display.
Scan
On
Sets the amount of time that each display
is shown in the display mode if scan is
turned on.
ScanTime
05 Sec
Selects the number of significant digits
displayed for the flow rate.
Flow Res
8 digits
Exiting Programming
Submenus
Press the enter key at the top screen of each
submenu to exit the programming submenus.
The display reads “Exit.” Press the up or
down arrow key to toggle to “Yes.” Press
enter. The display reads “SavChng?” (Save
Changes?). Press enter to save changes or
press the up or down arrow keys to toggle
to “No” and press enter to exit without saving changes.
SavChng?
Yes
Exit
No
Display
Menu
30.421
gal/min
103.42
x1
gal
10%
Error
code 4
Basic
Output
Fluid
menu C
menu C
menu C
Sensor
menu C
Figure 5-10. Exiting the Programming Submenus
Reset
menu D
Service
menu D
Password
menu P
HART
menu P
Display
menu P
MAINTENANCE AND TROUBLESHOOTING
Section 6
Section 6:
Maintenance
and Troubleshooting
General Maintenance
For maximum performance and service life
of the transducer, the following points in use
and handling are of importance:
1.
To increase the life of the transducer,
a filter should be used. See Section 2:
Mounting: Filtration.
2.
Do not attempt to alter any physical dimension of either the transducer or component parts.
3.
Do not use force to assemble or disassemble any components of the transducer. All components are machined to
close tolerance and forcing may damage
the transducer or transducer component
parts.
4.
The transmitter portion of the transducer
should never be immersed in solvent.
5.
When used with isocyanates, the transducers should always remain sealed
from the air. Piping should always be
closed. If maintenance is to be done
on the transducer, it should be completed quickly, the transducer repaired,
cleaned, and put back in the line. Never
leave a transducer with isocyanate in it
and the open parts. The material will
solidify and cleaning the transducer becomes an impossible task. If the transducer is removed and maintenance is not
immediately possible, the inlet and the
outlet ports should be plugged at once.
6.
No routine cleaning or lubrication is required on the transducer. However, a
filter cleaning schedule should be established.
7.
As a general rule, if the Helix were
under continuous operation, the Helix
bearings should be replaced every two
years.
29
MAINTENANCE AND TROUBLESHOOTING
30
Section 6
Operation Checks
Periodic inspections should be made during
operation. The following items should be
checked and the transducer shut down if any
of the following conditions are found.
a.
Flow rates outside of the specifications.
b.
Abnormal rotor or other noise in
the transducer.
c.
Abnormal differential pressure across
the transducer.
d.
Filter showing signs of clogging.
Note: It is recommended that all maintenance be done in factory or under
supervision of our technical service department.
Troubleshooting
Table 6-1, opposite, provides a general troubleshooting guide for the Helix Flowmeter.
Most problems that arise are likely to be of
an electrical nature due to improper wiring or
failure of the preamplifiers. If the preamplifier or magnetic pick-up are defective, they
may be replaced in the field by obtaining a
repair part from your EMCO representative
or the factory. Table 6-2 provides a troubleshooting guide for the EZ-Logic electronics.
Problem
Possible Cause
Corrective Action
Flush meter with suitable
solvents.
No flow through transducer
No output
High or low flow compared to
actual flow
Foreign particles in the meter
stopping rotors from turning
Remove from line for visual
inspection of bearings and
timing gear
Bad magnetic pick-up
Check the pick-up
Insufficient power
Verify the supply power
Improper wiring
Verify that the meter is properly
wired
Detective preamplifier
Replace preamplifier, if
necessary
Leaky bypass valve or defective
valve
Repair or replace valve
Air in the line
Purge all air from line
Flow is below meter's range
Increase flow rate
Programming not correct
Verify programming in
LOC-TOT electronics
Table 6-1. General Troubleshooting Guide
MAINTENANCE AND TROUBLESHOOTING
Section 6
Symptom
Output
Signals
Blank display
0-4 mA
or
0 Hz
Displays flow
without output
signal
<4 mA
No flow
displayed or no
output at flow
4 mA
or
0 Hz
Shows flow
without flow in
pipe.
Undefined
Unstable flow
signal
Unstable
Error Possible Reason
Code
Supply voltage
Solution
Check suppy voltage on the
terminal board of the meter.
Check resistance of the current
loop. Refer to the analog output
section for permissible values.
0 Hz
1, 2
Defective electronics
Replace electronics stack in the
meter.
Current output
deselected
Turn 4-20 mA to "On" in Output
Menu.
Frequency output
deselected
Turn frequency/pulse to "On" in
Output Menu.
No signal from sensor
Check resistance across sensor
wires. Check remote cable
connections.
Pipe vibration
Support pipe to reduce vibration.
Electrical noise
Check meter and power supply for
proper grounding.
Pulsating flow
Increase the time constant for
outputs and display.
Air bubbles in the media Follow piping guidelines.
Pipe vibration and/or
Support pipe to reduce vibration.
flow pulsations disturbing
flow measurement
Measuring error
>20 mA
3
Flow exceeds 110% of
maximum flow
Verify that the sensor is correctly
sized and increase maximum flow
in Basic Menu.
>10 kHz
max
4
Flow exceeds 110% of
maximum flow
Verify that the sensor is correctly
sized and increase maximum flow
in Basic Menu.
0 Hz
5
Volume/pulse too low or Check volume/pulse and pulse
pulse width too long
width in Output Menu for the flow
measured.
Wrong calibration
constant
Check that the K-factor in the
Sensor menu corresponds to the
value on the nameplate of the
meter.
4 mA
offset at no
flow
4 mA calibration value
incorrect
Calibrate 4 mA point in Service
Menu.
20 mA
offset at
max. flow
20 mA calibration value
incorrect
Calibration 20 mA point in Service
Menu.
Table 6-2. EZ-Logic Troubleshooting Guide
31
MAINTENANCE AND TROUBLESHOOTING
32
Section 6
Checking the output signal
The output signal may be checked to determine whether the magnetic pick-up or
the preamplifier is the cause of an electrical
problem. This procedure requires an oscilloscope and a DVM.
To check the meter’s output:
Disassembly and
Reassembly Instructions
1.
For MPC output meters, measure the
resistance of the magnetic pickup. The
resistance between the terminals should
be 1200 to 1600 ohms. Also check for
grounding of either terminal to case.
Terminal to case resistance should be
open.
2.
Connect the negative lead of the oscilloscope to the two magnetic pick-up
leads. The signal should be a 30 mV to
30 Volts AC level sinusoidal pulse.
3.
If preamplifiers such as PA1 or PAQ
are supplied with the Helix flowmeter,
check the signal in the same manner as
described in #1 and #2, except check the
signal across terminals 4 and 5 of PA1
and 1 and 2 of PAQ. The outputs of
such preamplifiers are shown in page 11
of this manual.
Note: Disassembly of the transducer will
void all factory warranties.
1.
Remove the transmitter condulet cover
and disconnect all wires at the termination board. For magnetic pick-up type
transmitters remove the three (3) allen
head cap screws holding the terminal
board. For LOC-TOT (EZ-Logic) electronics, remove power, then remove display and preamplifier in order to unplug
the pick-up coil.
2.
Remove electrical plug that is in the top
of the pick-up by pulling straight up.
3.
Remove housing by unscrewing CCW using strap wrench on 15⁄8 in diameter base.
4.
For preamps such as PA1 or PAQ disconnect all wires at the preamps and
repeat steps 2 and 3.
MAINTENANCE AND TROUBLESHOOTING
Section 6
5.
Remove tie rod bolts.
6.
Remove end caps.
7.
Remove pick-up gears for MPC transmitters and drive gear for SPT transmitters.
8.
Remove timing gears by loosening
clamps.
9.
Remove rotor assembly by pushing
through housing from transmitter end,
marking each with the number of the
bore from which they were removed so
as not to interchange rotors and bores on
reassembly.
10. Remove magnet housing.
11. Discard all O-rings and obtain new
O-ring kit.
12. To reassemble, place outlet end cap on
flat surface with O-ring groove up.
13. Install O-ring in groove.
14. Place Spyder in the end cap and install
bearings in the pocket.
15. Place meter body on top of the cap so
that Spyder inserts into housing bores.
16. Install nested rotor assembly into housing.
17. Install the inlet Spyder and bearings on
the rotor shafts and into the housing
bores. The rotors should turn freely
when both shafts are turned by hand.
18. Install timing gears on rotor shafts.
19. Install O-ring in the inlet end cap and
install the end cap so that it registers on
Spyder.
20. Install the tie rod bolts.
21. Install the pickup or drive gear on the
outlet rotor shaft.
22. Install the magnet housing with new
O-rings.
33
MAINTENANCE AND TROUBLESHOOTING
34
Section 6
Figure 18. Helix Transducer Components
HELIX GENERAL SPECIFICATION
Appendix A
Appendix A: Helix General Specification
Performance Specifications
Repeatability
±0.5% of reading within the linear range with liquid viscosities of 300 centipoise (cP) or higher. The only significant
source of measurement error is the fluid "leakage" between the
rotor surfaces. This measurement error decreases rapidly with
increasing viscosity. See Figures A-1 through A-6.
±0.10% or reading
–1%
–1.5%
L/min 0.5
gal/min (.13)
2
(0.53)
4
(1.1)
6
(1.6)
10
(2.6)
20
(5.3)
40
(11)
60
(16)
100
(26)
190
(50)
>1000 cP
0%
300 cP
P
0c
10
–1%
cP
10
0
cP
–0.5%
Pulse Output = 20 ms
Analog Output = 1 s
10
P
00c
>10
P
c
0
30
Response Time
Error (% of reading)
0%
10
cP
Error (% of reading)
Accuracy
–2%
L/min 5.68
gal/min (1.5)
20
(5.3)
40
(11)
60
(16)
100
(26)
200
(52)
400
(104)
600
(159)
1000
(264)
1703
(450)
Flow Rate
Flow Rate
Figure A-1. Model PDH-15 (1.5"/40 mm) Accuracy Curves
Figure A-3. Model PDH-40 (4"/100 mm) Accuracy Curves
cP
–3%
cP
–1%
P
>1000c
P
0c
30
0
–2%
0%
10
P
0c
10
–2%
10
cP
Error (% of reading)
–1%
>1000 cP
P
300 c
10
Error (% of reading)
0%
–3%
L/min
gal/min
2
(0.53)
4
6
(1.1) (1.6)
10
(2.6)
20
(5.3)
40
(11)
60
(16)
100
(26)
Flow Rate
Figure A-2. Model PDH-25 (2.5"/65 mm) Accuracy Curves
200
(52)
400
568
(104) (150)
L/min
gal/min
15
(4)
40
(11)
60
(16)
100
(26)
200
(52)
400 600
(104) (159)
1000
(264)
Flow Rate
Figure A-4. Model PDH-60 (6"/150 mm) Accuracy Curves
2000
(528)
4000 5100
(1057)
(1350)
35
HELIX GENERAL SPECIFICATION
Appendix A
0%
0
10
–3%
10
cP
–2%
cP
0%
>1000 cP
cP
300
–1%
0
10
–2%
cP
cP
cP
300
10
–1%
Error (% of reading)
>1000 cP
Error (% of reading)
36
–3%
L/min 50
gal/min (13)
200
(53)
400
(104)
600
(159)
1000
(264)
2000
(528)
4000
(1057)
10,000 15,140
(2642) (4000)
L/min 76
gal/min (20)
200
(53)
400
(104)
600
(159)
1000
(264)
2000
(528)
4000
(1057)
10,000
(2642)
20,818
(5500)
Flow Rate
Flow Rate
Figure A-5. Model PDH-100 (10"/250 mm) Accuracy Curves
Figure A-6. Model PDH-120 (12"/350 mm) Accuracy Curves
Operating Specifications
Model Sizes
Process Viscosity
1.5" (40 mm), Model PDH-15
2.5" (60 mm), Model PDH-25
4.0" (100 mm), Model PDH-40
6.0" (150 mm), Model PDH-60
10" (250 mm), Model PDH-100
12" (300 mm), Model PDH-120
100% flow rate capacity for liquid viscosities of 100 cP or
less. For viscosities greater than 100 cP, maximum flow rate
is derated to maximum allowable pressure drop across the
transducer. (See figures A-7 through A-12).
Process Temperature Limit
Fluid Types
Medium to high viscosity liquids, other than water or water
based solutions. Water will corrode 440C stainless steel bearings, therefore, these flowmeters should not be used with products containing water without consulting the factory.
Standard: –40 to 450 °F (–40 to 232 °C)
Optional: –40 to 800 °F (–40 to 427 °C)
for 1.5" to 4.0" (40 to 100 mm) only
Ambient Temperature Limit
–40 to 140 °F (–40 to 60 °C)
Measurable Flow Rates
Ambient Humidity Limit
See Table A-1.
5% to 100% relative humidity, non-condensing
Process Pressure Limit
Minimum and Maximum Flow Rates
for Maximum Liquid Viscocities of 100 cP
Model
Size
in (mm)
gal/min
L/min
PDH-15
1.5
(40)
0.13
50
0.49
190
PDH-25
2.5
(60)
0.50
150
1.89
568
PDH-40
4
(100)
1.50
450
5.68
1,703
PDH-60
6
(150)
4.00
1,350
15.1
5,110
PDH-100
10
(254)
13.0
4,000
49.2
15,140
PDH-120
12
(356)
20
5,000
75.7
20,818
Table A-1. Measurable Flow Rates
Standard: 750 psig (52 barg)
Optional: 3500 psig (241 bars) for 1.5"
and 2.5" (40 and 60 mm) only
Power Requirements
Sinusoidal Pulse Output (HPC): None
Squarewave Pulse Output (PH): 15 to 45 VDC
Analog Output (PAQ): 18 to 60 VDC
EZ-Logic Electronics (LOG-TOT): 18 to 40 VDC
HELIX GENERAL SPECIFICATION
Appendix A
35 (233.3)
5 (34.5)
20 (137.9)
L/min
(gal/min)
0.1
(0.03)
1
(0.26)
10
(2.6)
1000
(264)
100 190
(26) (50)
1k
cP
0
10
Continuous
Duty Area
5 (34.5)
L/min
(gal/min)
30
0
cP
3k
cP
P
10 (69.0)
0
0
kc
15 (103.4)
30
100
cP
3c
P
300
Continuous
Duty Area
10 (69.0)
cP
3k
1k
15 (103.4)
cP
cP
10k
cP
kc
20 (137.9)
30k
P
cP
25 (172.3)
Do Not
Apply
25 (172.3)
10
0k
cP
Pressure Drop – psi (kPa)
Do Not
Apply
100
Pressure Drop – psi (kPa)
30 (206.8)
30 (206.8)
10
(2.6)
cP
3c
100
(26)
P
1000
(264)
5100
(1350)
Flow Rate
Flow Rate
Figure A-10. Model PDH-60 (6"/150 mm) Pressure Drop Curves
Figure A-7. Model PDH-15 (1.5"/40 mm) Pressure Drop Curves
35 (233.3)
P
P
cP
10
0
30
0
Continuous
Duty Area
5 (34.5)
cP
cP
P
kc
10 (69.0)
cP
P
1k
3c
15 (103.4)
kc
P
3k
1
5 (34.5)
c
00
10
Continuous
Duty Area
20 (137.9)
30
cP
1k
3k
30
0
10 (69.0)
cP
cP
10
kc
P
P
kc
30
15 (103.4)
25 (172.3)
kc
kc
20 (137.9)
Do Not
Apply
30 (206.8)
100
Pressure Drop – psi (kPa)
Do Not
Apply
P
25 (172.3)
100
Pressure Drop – psi (kPa)
30 (206.8)
3
cP
0
L/min
(gal/min)
1
(0.26)
10
(2.6)
100
(26)
568 1000
(150) (264)
Flow Rate
0
10
(2.6)
L/min
(gal/min)
100
(26)
1000
(264)
10K15,140
(2642)
(4000)
Flow Rate
Figure A-8. Model PDH-25 (2.5"/65 mm) Pressure Drop Curves
Figure A-11. Model PDH-100 (10"/250 mm) Pressure Drop Curves
5 (34.5)
1
(0.26)
Continuous
Duty Area
5 (34.5)
P
0c
P
10
0c
30
cP
1k
10 (69.0)
0
L/min
(gal/min)
cP
15 (103.4)
3k
20 (137.9)
10
kc
P
25 (172.3)
30k
cP
cP
3 c 100 c
P
P
Continuous
Duty Area
300
cP
cP
3k
1k
10 (69.0)
30k
15 (103.4)
kc
P
cP
20 (137.9)
10k
cP
25 (172.3)
Do Not
Apply
30 (206.8)
k cP
Do Not
Apply
100
30 (206.8)
Pressure Drop – psi (kPa)
35 (233.3)
100
Pressure Drop – psi (kPa)
35 (233.3)
P
3c
0
10
(2.6)
100
(26)
1000 1703
(264) (450)
Flow Rate
Figure A-9. Model PDH-40 (4"/100 mm) Pressure Drop Curves
L/min
(gal/min)
10
(2.6)
100
(26)
1000
(264)
10,000 20,818
(2642) (5500)
Flow Rate
Figure A-12. Model PDH-120 (12"/350 mm) Pressure Drop Curves
37
HELIX GENERAL SPECIFICATION
Appendix A
Output Signals (Driven by customer's power supply)
Sinusoidal pulse (MPC): 3 mV to 3 V, 2-wire
Squarewave pulse (PHELETOT): 10 Vp-p, 3-wire
Analog (PAQ & LOCTOT) 4-20 mA, 2-wire
Span Setting
For analog outputs, a BCD span setting can be digitally adjusted.
Load Resistance (Ω)
38
C
O
N
S
U
L
T
1500
1000
500
OK
0
0
10
20
30
40
50
F
A
C
T
O
R
Y
60
Input Voltage (VDC)
Figure A-13. Load Resistance vs. Input Voltage
Physical Specifications
Materials
Wetted parts
Body and rotors — 303 stainless steel
Bearings
440C stainless steel
Electrical Enclosure
Aluminum
Seal Type
Standard O-rings
Filtration
The Helix flowmeters are designed to have minimum clearances between the rotor surfaces; thus, filtration is recommended for meter longevity.
Optional Heating Ports
Model PDH-15, PDH-25, and PDH-40 can be provided with
optional heating ports. There are two inlet ports and two outlet
ports located on both sides of the flowmeter body. Maximum
heating fluid pressure is 750 psig.
Viton®
Optional O-rings
Teflon
Fluoraz for 1.5" to 4" (40 to 100 mm) only
Metal for 1.5" to 4" (40 to 100 mm) only
Process Line Connection
Model PDH-15 (750 psi)
1.5" NPT and/or wafer mount for ANSI 300# or
600# flanges
Model PDH-15 (3500 psi)
Wafer mount for ANSI 1500# or 2500# flanges
NOTE: The design of the heating ports (unlike the heating
jacket) is such, that the heated fluid is not in contact with
the flowmeter's outer body surface. Therefore, sufficient
time should be allowed during start-up to elevate the flowmeter body temperature to the heated fluid temperature.
Signal Cable
18, 20, 22 gauge shielded wire
Cable Conduit Connection
ANSI 3⁄4" NPT female
Model PDH-25 (750 psi)
2.5" NPT and/or wafer mount for ANSI 300# or 600#
flanges
Model PDH-25 (3500 psi)
Filtration
Model
Size
in (mm)
US
Mesh
Microns
Model PDH-40
PDH-15
1.5 (40)
30
590
Wafer mount for ANSI 300# or 600# flanges
PDH-25
2.5 (60)
20
840
PDH-40
4 (100)
20
840
PDH-60
6 (150)
10
2,000
PDH-100 10 (254)
10
2,000
PDH-120 12 (356)
10
2,000
Wafer mount for ANSI 1500# or 2500# flanges
Models PDH-60, PDH-100, and PDH-120
Wafer mount for ANSI 300# and larger flanges (pressure is
limited to 750 psig {52 barg})
Table A-2. Recommended Filtration
HELIX GENERAL SPECIFICATION
Appendix A
Installation Considerations
Installation
Line Size Compatibility
The flowmeter can be installed horizontally, vertically or at
any angle.
All schedules. Can be installed in different line sizes using
bushings, reducers, etc.
Straight Line Requirements
Serviceability
The flowmeter transports a fixed volume of liquid, regardless
of flow profile; thus, no upstream or downstream straight run
piping is required.
The sensor/transmitter element can be removed and replaced
without removing the flowmeter body from the process line
and without shutting down the line.
39
HELIX GENERAL SPECIFICATION
40
Appendix A
Dimensions and Weights
PDH-15
Front View
PDH-15
Side View
3/4"
NPT
Wiring Access
Optional* (4X)
1/8" NPTF
Heating Port
B
0.5
(13)
FLOW
*
2.85
(72)
4
(406)
*
2.9
(74)
A
93/8
(238)
2.9
(74)
*Inlets for optional heating ports only.
*Inlets for optional heating ports only.
Figure A-14. Dimensional Outline Model PHD-15 Front View
Figure A-15. Dimensional Outline Model PHD-15 Side View
PDH-15
Dimensions and Weight Table
PDH-15
Top View
A
B
Weight
750 psig
(52 barg)
3500 psig
(241 barg)
450 ˚F
(200 ˚C)
800 ˚F
(426 ˚C)
lb
(kg)
4
(102)
5
(127)
12
(356)
20
(508)
25
(12)
Optional
Heating Port
Inlet/Outlet
Table A-3. Dimensions and Weight Model PDH-15
Optional
Heating Port
Inlet/Outlet
Figure A-16. Dimensional Outline Model PHD-15 Top View
HELIX GENERAL SPECIFICATION
Appendix A
PDH-25/PDH-40
Front View
PDH-25/PDH-40
Side View
3/4" NPT
Wiring Access
B
Optional Heating Port (4X)
(1/4" NPTF for PDH-25)
(3/8" NPTF for PDH-40)
A
D
D
C
A
Figure A-17. Dimensional Outline Models PDH-25 and PDH-40 Front View
Figure A-18. Dimensional Outline Models PDH-25 and PDH-40 Side View
PDH-25/PDH-40
Dimensions and Weight Table
PDH-25/PDH-40
Top View
Model
PDH
A
B
C
450 ˚F
800 ˚F
D
Weight
lb
(200 ˚C)
(426 ˚C)
25
2.5
(132)
12
(356)
20
(508)
10.9
(277)
3.2
(81)
(kg)
38
(18)
40
7.2
(183)
12
(356)
20
(508)
13.1
(333)
3.7
(94)
128
(59)
Optional
Heating Port
Inlet/Outlet
Table A-4. Dimensions and Weight Models PDH-25 and PDH-40
Optional
Heating Port
Inlet/Outlet
Figure A-19. Dimensional Outline Models PDH-25 and PDH-40 Top View
41
HELIX GENERAL SPECIFICATION
42
Appendix A
PDH-60/PDH-100/PDH-120
Front View
PDH-60/PDH-100/PDH-120
Side View
3/4"
NPT
Wiring
Access
B
A
A
C
Figure A-20. Dimensional Outline Models PHD-60, PDH-100, and PDH-120
Front View
PDH-60/PDH-100/PDH-120
Dimensions and Weight Table
Model
PDH
A
B
C
450 ˚F
(200 ˚C)
800 ˚F
(426 ˚C)
Weight
lb
(kg)
60
9.8
(249)
12
(356)
N/A
16.3
(414)
220
(100)
100
18.5
(470)
12
(356)
N/A
22
(559)
1200
(612)
120
22
(559)
12
(356)
N/A
25.9
(658)
1350
(612)
Table A-5. Dimensions and Weight PHD-60, PDH-100, and PDH-120
Figure A-21. Dimensional Outline Models PHD-60, PDH-100, and PDH-120
Side View
HELIX GENERAL SPECIFICATION
Appendix A
Model and Suffix Codes
Category
Description
Suffix Codes
1.5" (40 mm)
PDH-15
...
...
...
...
...
2.5" (60 mm)
PDH-25
...
...
...
...
...
4" (100 mm)
PDH-40
...
...
...
...
...
6" (150 mm)
PDH-60
...
...
...
...
...
10" (250 mm)
PDH-100
...
...
...
...
...
12" (300 mm)
PDH-120
...
...
...
...
...
750 psig (52 barg)
...
750
...
...
...
...
3500 psig (241 barg) for sizes 1.5" to 2.5" only
...
3500
...
...
...
...
450°F (232°C)
...
...
450
...
...
...
800°F (427°C) for sizes 1.5" to 4" only
...
...
800
...
...
...
Sinusoidal pulse output
...
...
...
MPC
...
...
10 Vp-p square wave pulse output
...
...
...
MPC-PA1
...
...
4-20 mA current output
...
...
...
MPC-PAQ
...
...
...
...
...
LOC-TOT
...
...
...
...
...
RMT
...
...
Viton (450°F/232°C max)
...
...
...
...
V
...
Teflon (450°F/232°C max)
...
...
...
...
T
...
Fluoraz (550°F/288°C max)
...
...
...
...
F
...
Metal (800°F/427°C max)
...
...
...
...
M
...
No heating port
...
...
...
...
...
STD
Heating port for sizes 1.5" to 2.5" only
(maximum heating fluid pressure is 750 psig/52 barg)
...
...
...
...
...
HB
Transducer
Pressure Rating
Temperature
Output Signal
EZ-Logic electronics
Remote mount electronics
O-rings
Heating Port
1
Table A-6. Model and Suffix Codes
EXAMPLE:
PDH–60–750–450–MPC–V–STD
Notes:
Ordering Instructions
1. Remote mount electronics available with LOC-TOT option
only.
2. For pressures above 750 psig, the flowmeter must be used
as a wafer style and must be installed between appropriate
flanges.
3. The performance characteristics indicated in this specification are considered typical. Each meter is calibrated prior to
shipment to establish its specific performance. The test data
and conditions are furnished with the meter. Calibration at
specific customer application conditions is also available —
consult the factory.
1. Select one character suffix code option from each category
to fill in the complete model number.
2. Specify the following information (as a minimum) when
ordering:
• Model name and code.
• Flow rates: minimum, nominal and maximum.
• Fluid temperature and pressure ranges: minimum, nominal and maximum.
• Fluid characteristics: specific gravity, viscosity and minimum conductivity.
• Electrical requirements: interfacing readouts, etc.
43
GLOSSARY
44
Appendix B
Appendix B: Glossary
ac Alternating current; an electric current that reverses direction at regular intervals.
ambient temperature the average or mean temperature of
the surrounding air which comes in contact with the equipment
and instruments in use.
analog output a voltage or current signal that is a continuous
function of the measured parameter (i.e. flow, pressure, temperature).
frequency output An oscillating or varying current, where
frequency is the number of complete cycles per second in
alternating current direction. The standard unit of frequency
is the hertz, abbreviated Hz. If a current completes one
cycle per second, then the frequency is 1 Hz; 60 cycles per
second equals 60 Hz (the standard alternating-current utility
frequency). Larger units of frequency include the kilohertz
(kHz) representing thousands (1,000's) of cycles per second,
the megahertz (MHz) representing millions (1,000,000's) of
cycles per second.
ANSI American National Standards Institute, the primary organization for fostering the development of technology standards in the United States.
ft Foot
AWG American Wire Gauge; A standard of the dimensional
characteristics of wire used to conduct electrical current or
signals.
ft3 Cubic foot
g Gram
bbl Barrel
gal Gallon
°C Degrees Celsius
h Hour
CE A manufacturer's mark that demonstrates compliance with
European Union (EU) laws governing products sold in Europe.
Hz Hertz
ft2 Square foot
cm centimeter
impedance The total opposition to electrical flow (resistive
plus reactive).
cm3 cubic centimeter
in. Inch
conduit A channel or pipe for carrying fluids or a tube or
trough for protecting electrical wires.
ISO International Standards Organization
cP Centipoise
dc Direct current; an electric current of constant magnitude
flowing in one direction only.
density Mass per unit of volume of a substance (i.e. g/cm3,
lb/ft3).
jumper A pair of prongs that are electrical contact points set
into an electronic board. When you set a jumper, you place
a plug on the prongs that completes a contact. The jumper
settings tell the microprocessor how it is configured and what
operations can be performed.
kg Kilogram
kHz Kilohertz
downstream In flowmetering, the piping from the point of flow
measurement that is in the direction of flow.
lb pound
ESD Electrostatic discharge
m Meter
°F Degrees Fahrenheit
m3 Cubic meter
GLOSSARY
Appendix B
mA Milliamp
mΩ Megohm
resistance A measure of the extent to which a substance
opposes the movement of electrons among atoms. The more
easily the atoms give up and/or accept electrons, the lower
the resistance. It is always a positive real-number quantity.
Resistance is observed with ac and dc voltage. The standard
unit of resistance is the ohm, sometimes written out as a
word, and sometimes symbolized by the uppercase Greek
letter omega. When an electric current of one ampere passes
through a component across which a potential difference (voltage) of one volt exists, then the resistance of that component
is one ohm.
ms Millisecond
RTD Resistance Temperature Detector
NEMA 4X A standard from the National Electrical Manufacturer's Association) which defines enclosures intended for indoor
or outdoor use, primarily to provide a degree of protection
against windblown dust and rain, splashing water, and hosedirected water.
s Second
max. Maximum
min Minute
min. Minimum
mm Millimeter
terminal An input/output device used to enter data into a
computer and record the output.
terminal block A group of terminals mounted as one unit.
NIST National Institute of Standards & Technology.
NPT National Pipe Thread.
transmitter A device that coverts a physical phenomenon
(i.e. flow, pressure, temperature) and converts it to a 4-20 mA
2-wire output.
Ω ohm
V Volt
output The electrical signal measured at the output terminals
which is produced by an applied input to a transducer.
upstream In flowmetering, the piping from the point of flowmeter that is against the direction of flow.
velocity The time rate of change of displacement; dx/dt.
viscosity The inherent resistance of a substance to flow.
45
CONTACT AND RETURN INFORMATION
46
Appendix C
Appendix C: Contact and Return Information
Quality Statement
Returns
Customer satisfaction is the ultimate measure of quality.
1. Call or fax Customer Service for a Return Material Authorization (RMA) number before returning equipment.
2. Include a written description of the problem.
3. Put the RMA number on the shipping label, and written
description.
Contact
Phone: 303-651-0550
Fax: 303-678-7152
E-mail: sales@emcoflow.com
For technical support, ask for an Applications Engineer.
To place an order, ask for Customer Service.
Note: A restocking charge of 25% of the net price is
charged for all standard units returned to stock within
6 months.
LIST OF FIGURES AND TABLES
Appendix D
List of Figures
Figure 1-1.
Figure 1-2.
Figure 1-3.
Figure 1-4.
Figure 2-1.
Figure 2-2.
Figure 2-3.
Figure 3-1.
Figure 3-2.
Figure 3-3.
Figure 3-4.
Figure 3-5.
Figure 3-6.
Figure 4-1.
Figure 4-2.
Figure 4-3.
Figure 4-4.
Figure 4-5.
Figure 4-6.
Figure 4-7.
Figure 4-8.
Figure 5-1.
Figure 5-2.
Figure 5-3.
Figure 5-4.
Figure 5-5.
Figure 5-6.
Figure 5-7.
Figure 5-8.
Figure 5-9.
Principle of Operation ......................................... 1
I.D. Plate.............................................................. 2
I.D. Plate.............................................................. 2
I.D. Plate.............................................................. 2
Recommended Valve Placement ........................ 5
Recommended Differential Pressure
Switch Placement ............................................... 5
Wafer Mount Installation ..................................... 6
MPC Signal Output Wiring Diagram.................... 9
PA1 Signal Output Wiring Diagram ..................... 9
PAQ Signal Output Wiring Diagram .................. 10
PAQ Switch Setting ........................................... 11
Zero and Span Adjustment Location................. 12
PAQ Calibration Connections............................ 12
Filter Board for Helix ......................................... 13
Field Wiring Access .......................................... 14
Ground Screw Location .................................... 14
Load Resistance Graph for VDC Power
with Analog Output............................................ 14
Wiring Diagram for Analog Output
with VDC Power
(JP1 jumper or no jumpers installed) ................ 14
Wiring Diagram for Pulse Output
with VDC Power (JP2 jumper installed) ............ 15
Wiring Diagram for Pulse Output with VDC Power
(no jumpers installed)........................................ 15
Wiring Diagram for Remote Mounted Electronics
16
Manual Manipulation of the Keypad.................. 17
Magnetic Manipulation of the Keypad ............... 17
EZ-Logic Interface Map..................................... 18
Password Access to Submenus........................ 20
Linear Analog Output ........................................ 22
Linear Scaled Frequency Output ...................... 22
Programmed Defaults ....................................... 25
Wiring diagram for 4-20 mA output calibration.. 26
Exiting the Programming Submenus ................ 29
Figure A-1.
Figure A-2.
Figure A-3.
Figure A-4.
Figure A-5.
Figure A-6.
Figure A-7.
Figure A-8.
Figure A-9.
Figure A-10.
Figure A-11.
Figure A-12.
Figure A-13.
Figure A-14.
Figure A-15.
Figure A-16.
Figure A-17.
Figure A-18.
Figure A-19.
Figure A-20.
Figure A-21.
Model PDH-15 (1.5"/40 mm) Accuracy Curves. 30
Model PDH-25 (2.5"/65 mm) Accuracy Curves. 30
Model PDH-40 (4"/100 mm) Accuracy Curves.. 31
Model PDH-60 (6"/150 mm) Accuracy Curves.. 31
Model PDH-100 (10"/250 mm) Accuracy Curves
32
Model PDH-120 (12"/350 mm) Accuracy Curves
32
Model PDH-15 (1.5"/40 mm) Pressure Drop
Curves............................................................... 33
Model PDH-25 (2.5"/65 mm) Pressure Drop
Curves............................................................... 33
Model PDH-40 (4"/100 mm) Pressure Drop
Curves............................................................... 33
Model PDH-60 (6"/150 mm) Pressure Drop
Curves............................................................... 34
Model PDH-100 (10"/250 mm) Pressure Drop
Curves............................................................... 34
Model PDH-120 (12"/350 mm) Pressure Drop
Curves............................................................... 34
Load Resistance vs. Input Voltage .................... 34
Dimensional Outline Model PHD-15 Front View 36
Dimensional Outline Model PHD-15 Side View 36
Dimensional Outline Model PHD-15 Top View .. 36
Dimensional Outline Models PHD-25 and PDH-40
Front View ......................................................... 37
Dimensional Outline Models PHD-25 and PDH-40
Side View .......................................................... 37
Dimensional Outline Models PHD-25 and PDH-40
Top View............................................................ 37
Dimensional Outline Models PHD-60, PDH-100,
and PDH-120 Front View .................................. 38
Dimensional Outline Models PHD-60, PDH-100,
and PDH-120 Side View ................................... 38
List of Tables
Table 2-1.
Table 2-2.
Table A-1.
Table A-2.
Table A-3.
Operating and Ambient Temperature Limits for the
Helix Flowmeter .................................................. 4
Recommended Filtration
for the Helix Flowmeter ....................................... 4
Measurable Flow Rates .................................... 33
Recommended Filtration................................... 35
Dimensions and Weight Model PDH-15............ 36
Table A-4.
Table A-5.
Table A-6.
Dimensions and Weight
Models PHD-25 and PDH-40............................ 37
Dimensions and Weight
Models PHD-60, PDH-100, and PDH-120 ........ 38
Model and Suffix Codes.................................... 39
47
INDEX
48
Index
A
accuracy 30
ambient temperature. See temperature: ambient
analog output 8, 40.
See also PAQ preamplifier or EZ-Logic electronics
EZ-Logic screen 22
simulated 26
time constant 22
B
basic menu 21
C
cable
EZ-Logic electronics 14
MPC electronics 9
PA1 preamplifier 9
PAQ preamplifier 10
calibration
20 mA value 26
4 mA value 26
data sheet 3
K-factor 24
D
display menu 28
defaults 25
density
entering fluid density 24
dimensions
PDH-15 36
PDH-25 and PDH-40 37
PDH-60, PDH-100, and PDH-120 38
display 20
Change screens in display
Change scanning time
Change scan
E
equations
determine the flow rate with analog output 8
frequency proportional to flow rate 8
rescaling the PAQ 11
error codes
EZ-Logic screen 20, 27
EZ-Logic electronics 1, 17
ambient temperature limits 4
interface map 3, 18
operating temperature limits 4
EZ-Logic menus
basic menu 21
display menu 28
fluid menu 24
reset menu 25
sensor menu 24
top display menu 20
EZ-Logic programming
accessing programming Menus 20
altering preset data 19
altering real number data 19
moving through the interface Map 17
password protection 20, 27
restoring defaults 25
using the keypad 17
EZ-Logic screens
analog output 22
analog output time constant 22
bar graph 20, 28
calibration factor 24
direct frequency output 23
dsply TC 28
error code 20, 28
flow rate 20, 28
flow res 28
flow unit 21
fluid density 24
frequency/pulse output setup 22
HART enable/disable 27
helix frequency output 23
frequency output time constant 23
maximum flow 21
pulse + 23
per pulse 23
pulse unit 23
pulse width 23
pulse – 23
per pulse 23
pulse unit 23
pulse width 23
scaled frequency output 22
Frequency output time constant 22
maximum output frequency 22
scan 28
scan time 28
serial 24
set defaults 25
set new password 27
size 24
INDEX
49
tag number 24
tot reset 28
totalized flow 20, 28
totalizer reset 25
totalizer unit 21
transition 24
per pulse 24
pulse unit 24
M
materials of construction 35
model and suffix codes 39
MPC electronics 8
ambient temperature limits 4
operating temperature limits 4
wiring 9
N
F
fluid menu 24
filtration 4
flow rate
display 20
measurable 33
setting the maximum 21
show/hide display 28
units 21
frequency output 40. See also pulse output
EZ-Logic output set up
Setting the max frequency
MPC & PA1
full access 20, 27
G
gaskets 5
H
high temperature service
start-up 7
high temperature service
warm-up time 7
I
identification plate 2
impedance 40
installation
mounting the flowmeter 4
NPT mount 6
site considerations 4
start-up procedure
high temperature 7
standard 7
wafer mount 6
NPT mount 6
O
operating temperature. See temperature: operating
output signals. See EZ-Logic electronics, MPC electronics,
PA1 preampl
P
PA1 preamplifier 1, 8
ambient temperature limits 4
operating temperature limits 4
wiring 9
PAQ preamplifier 1, 8
ambient temperature limits 4
operating temperature limits 4
rescaling 11
wiring 10
zero and span adjustment 12
password 20, 27
power requirements 34
EZ-Logic electronics 14
PA1 preamplifier 9
pressure drop
curves 33
process temperture. See temperature: operating
pulse output 8. See also MPC electronics, PA1 preamplifier,
EZ-Logic electronics
pumps 5
R
reset menu 25
resistance 41
S
jumper 40
sensor menu 24
start-up procedure
high temperature 7
standard 7
K
T
K-factor 8, 11
keypad 17
keys 17
temperature
ambient 40
ambient limit 34
all electronics 4
J
INDEX
50
EZ-Logic electronics 14
operating limit 4, 34
totalizer
display 20
resetting 25, 28
show/hide display 28
units 21
U
units
flow rate 21
totalized flow 21
V
valves 5
vertical flow 4
vibration 4
viscocity
measurable 33
viscosity 41
W
wafer mount 6
weight
PDH-15 36
PDH-25 and PDH-40 37
PDH-60, PDH-100, and PDH-120 38
wiring
all other electronics 9
EZ-Logic electronics 14
EZ-Logic electronics
analog output 14
grounding the meter 14
pulse output 15
remote 16
general
EZ-Logic electronics 13
MPC, PA1, PAQ 9
MPC electronics 9
PA1 preamplifier 9
PAQ preamplifier 10
Providing innovative flowmeter
products and services for over
three decades . . .
Engineering Measurements Company (EMCO) is a long
established manufacturer of precision flowmeters for
liquid, gas, and steam applications for commerce and
industry. Manufacturing under an ISO 9001 certified quality system, which includes extensive flow calibration capability, engineering, applications, and service, underpins a
world-wide sales and service organization totally focused
on providing the best flowmeters and customer service in
the industry.
Vortex PhD™ Inline Vortex
V-Bar™
Insertion
Vortex
Turbo-Bar™
Insertion
Turbine
! Manufacturing is housed in a modern plant located in
Longmont, Colorado
! Modern clean-room, mechanized assembly equip-
ment, and computer based testing ensure the highest
quality product
MAGFLO® Electromagnetic
! Trained professional flow specialists and technicians
offer timely customer assistance
! Factory trained and certified field technicians provide
product support services
Coriolis Mass
Sono-Trak™
PDH Helix
PDP Piston
P/N 990339 Rev. C
Specifications subject to change without notice
Engineering Measurements Company
600 Diagonal Hwy. • Longmont, CO 80501 • 303.651.0550 • Fax 303.678.7152 • sales@emcoflow.com