Greystone Energy Systems DP Series User manual

Page 1
INTRODUCTION
The dierential pressure transmitter is designed with dual remote
sensors that enable it to accept high pressure in ranges up to 5
PSI to 500 PSI. All models can handle overload pressure 2X the
maximum fully scale range and burst pressure is 5X the maximum
full scale range.
Features include eld selectable pressure ranges and output signal
types, output reversal and slow damping, port swapping and
bidirectional measurements for the most exible applications. The
output signal is factory calibrated and temperature compensated
for the highest start-up accuracy.
WARNING : Ensure that the maximum individual port pressure
does not exceed the highest pressure range of the unit. For
example, the highest individual port pressure on a 102 Range
Code is 100 PSI. Exceeding this may damage the sensors and
give erroneous readings. See Figure 12 for ratings.
BEFORE INSTALLATION
Read these instructions carefully before installing and
commissioning the dewpoint transmitter. Failure to follow
these instructions may result in product damage. Do not use
in an explosive or hazardous environment, with combustible
or ammable gases, as a safety or emergency stop device or in
any other application where failure of the product could result
in personal injury. Take electrostatic discharge precautions
during installation and do not exceed the device ratings.
MOUNTING
The transmitter mounts on a vertical surface using the two integrated mounting holes. The remote
sensor cable connection should be located on the bottom of the enclosure. The two mounting holes will
facilitate a #10 size screw (not supplied). See Figure 1. Ensure
there is enough space around the unit to make the electrical
connections and that it is within an acceptable distance for
the length of remote sensor cables. Avoid locations with
severe vibrations or excessive moisture. The enclosure has a
standard opening for a conduit connector or cable gland type
tting. In this position the High port is on the left and the Low
port is on the right as shown on the PCB.
The enclosure has a hinged cover with a latch. Open the
cover by pulling slightly on the latch on the bottom side of
the enclosure and at the same time pulling on the cover, as
illustrated in Figure 2.
A 1/2" NPT threaded connection hole is provided in the left
side of the enclosure as shown in Figure 3. Screw the EMT
connector or cable gland connector in until tight. See Figure 4.
It is recommended that weatherproof conduit or cable gland
ttings be used. The F style enclosure includes 1/2" NPT to
M16 thread adapter and cable gland tting.
Two security screws are provided which can be installed to
help secure the cover once settings and wiring connections
are complete. See Figure 4.
Conduit
Figure 1
Figure 2
Figure 4
Figure 3 Figure 5
EMT Connector
Thread adapter and
cable gland tting
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Dierential Pressure Transmitter
DP Series - Installation Instructions

Page 2
PLUMBING
The two stainless steel pressure sensors are labeled High and Low. The output signal will indicate a
positive value when the pressure applied to the High sensor is greater than the pressure applied to
the Low sensor, so ensure the sensors are connected correctly as shown in a typical application in
Figure 6. Both sensors incorporate 1/4”NPT male threads for connection to the pipe being monitored.
Do not allow material to fall into the pressure ports as contamination could damage the sensors. It is
recommended to use Teon tape to prevent leaks.
Remove the High pressure sensor from the remote cable by pressing on the release and pulling apart
from the remote cable boot as shown in Figure 7. Wrap 1/4”NPT male sensor threads with Teon tape.
Screw into the sensor port on the pipe being monitored until nger tight. Use an appropriate size
wrench to tighten the sensor until snug as shown in Figure 8. Reconnect the remote sensor cable you
aligning the remote sensor cable boot and pushing rmly onto sensor. See Figure 9.
Repeat for the Low pressure sensor.
Low Pressure
Sensor
Shut O
Valve
Direction of
Water Flow
Direction of
Water Flow
High Pressure
Sensor
Shut O
Valve
Pump
Supply Water
Line
Return Water
Line
Figure 6 Figure 7
Figure 8 Figure 9
CONFIGURATION
Most conguration is done using User Menu setting with LCD and push buttons on PCB. See User Menu
section for details.
Warning: The transmitter must not have power applied during set up or when making changes to
the output signal.
Output Selection:
The transmitter features user-selectable
output signals of 4-20 mA, 0-5 Vdc and
0-10 Vdc. It is factory congured to
operate in the Current (4-20 mA output)
mode, but can be changed to Voltage
mode by sliding the output selection
switch from the position marked mA to
the position marked VOLT as shown in
Figure 10.
In Voltage mode the output scale may
be changed to either 0-5 or 0-10 Vdc by
accessing under User Menu.
Figure 10
Voltage Mode
COM
PWR
OUT
ZERO
ZERO/UPDOWNMENU
Current Mode
mA
mA
VOLT VOLT
mA
VOLT
Press
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Page 3
WIRING
• Deactivate the 24 Vac/dc power supply until all connections are made to the device to prevent electrical
shock or equipment damage.
• Use 14-22 AWG shielded wiring for all connections and do not locate the device wires in the same conduit
with wiring used to supply inductive loads such as motors. Make all connections in accordance with
national and local codes.
• Pull at least six inches of wire into the enclosure, then complete the wiring connection according to the
wiring diagram for the applicable power supply and output signal type.
• Connect the plus DC or the AC voltage hot side to the PWR terminal. For voltage output or AC power, the
supply Common is connected to the COM terminal. DO NOT connect power to the OUT terminals as
the device will be damaged. It has half-wave power supply so the supply Common is the same as the
signal Common. See Figure 11.
• The analog output is available on the OUT terminal. Check the controller Analog Input to determine the
proper connection before applying power.
• If using the Zero function, connect the Remote Zero Switch between the ZERO and COM terminals.
Figure 11
Wiring for all output signals and 24 Vac/Vdc
power from controller
Wiring if using the remote zero input
WARNING: Do NOT apply voltage to Zero terminal
Wiring for all output signals and external 24 Vac
power transformer or 24 Vdc power supply
START-UP
Upon applying power to the device, it will enter the start-up mode. The LCD will display the current
operating settings for 2 seconds each.
Version
1.00
1. SOFTWARE VERSION NUMBER
2. MODEL PRESSURE RANGE
P Range
50PSI
3. THE OUTPUT TYPE
Output
4-20mA
At the end of start-up mode the device will enter normal mode displaying pressure read from sensors.
0.0
PSI
Remote Zero
Switch
COM
PWR
OUT
ZERO
External Power Supply
Controller
COM
PWR
OUT
Controller
COM
PWR
OUT
ZERO
External Power Supply
COM
PWR
OUT
ZERO
ZERO/UPDOWNMENU
mA
VOLT
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Page 4
P Scale
0 - Max
The default pressure scale is unidirectional 0 to full-scale (ex: 0 - 500 PSI). Use <UP>
or <DOWN> to toggle the setting to a bi-directional scale (ex: ± 500 PSI). The setting
changes from "0 - Max" to "+/- Max.
<MENU> Press to save and advance to next menu item
3. PRESSURE SCALE
USER MENU
The User Menu can be accessed by pressing the <MENU> key at any time after the start-up mode. Note
that the <ZERO> key function changes to an <UP> key function when a menu is active.
The system suspends operation when in the menu and holds the last pressure value as the output value.
If the User Menu is not active for 5 minutes (no key press), then the menu will exit and the device returns
to normal operation.
The User Menu operation and parameters are explained below.
Output
0-5 Vdc
This item only appears if the PCB jumper is in the VOLT position. Use <UP> or
<DOWN> to set the output signal type to 0-5 or 0-10 Vdc. The factory default is 0-5
Vdc.
<MENU> Press to save and advance to next menu item
1. OUTPUT
P. Range
500 PSI
The pressure range defaults to the largest range (1) of the device. Use <UP> or
<DOWN> to step through the four available ranges specic to the model. Available
options are shown below in Figure 12:
2. PRESSURE RANGE
Model 1 2 3 4
01 50 PSI 25 PSI 10 PSI 5 PSI
02 100 PSI 50 PSI 20 PSI 10 PSI
03 250 PSI 125 PSI 50 PSI 25 PSI
04 500 PSI 250 PSI 100 PSI 50 PSI
05 5.0 Bar 2.5 Bar 1.0 Bar 0.5 Bar
06 7.0 Bar 3.5 Bar 1.4 Bar 0.7 Bar
07 10 Bar 5 Bar 2 Bar 1 Bar
08 35 Bar 17.5 Bar 7 Bar 3.5 Bar
09 500 kPa 250 kPa 100 kPa 50 kPa
10 700 kPa 350 kPa 140 kPa 70 kPa
11 1000 kPa 500 kPa 200 kPa 100 kPa
12 3500 kPa 1750 kPa 700 kPa 350 kPa
PRESSURE RANGE
<MENU> Press to save and advance to next menu item
Damping
4 sec
The pressure averaging time for surge damping defaults to 4 seconds. This can be
changed from 1 to 60 seconds using <UP> or <DOWN>.
<MENU> Press to save and advance to next menu item
4. DAMPING
Figure 12
<MENU> Press and release the <MENU> key to enter the User Menu
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Page 5
OPERATION
During normal mode the device reads the pressure sensors and calculates the pressure value depending
on the selected range. The pressure value is displayed on the LCD and set as the output value for the analog
output. The output value is updated once per second.
For normal operation such as 0-100 PSI, the pressure applied to the High port must be higher than the
pressure applied to the Low port. If the pressure connection is reversed then the transmitter will always
output 4 mA. If the Low port is left open to ambient pressure, then the High port is used to measure a
positive pressure and 0 PSI = 4 mA and 100 PSI = 20 mA.
For bi-directional operation such as ±100 PSI, the pressure applied to the High port should be higher than
the pressure applied to the Low port for a positive output response. Negative pressure is indicated if the
High pressure is less than the Low pressure. In this case -100 PSI = 4 mA and +100 PSI = 20 mA. Since the
transmitter is linear 0 PSI = 12 mA.
The output value may be aected by device settings such as the pressure damping time. The pressure
averaging setting controls how many readings are averaged to form the output value. For example, if the
pressure averaging value is set to 30 seconds then 30 one-second readings are stored and averaged to
form the output value. The next second will add a new reading and delete the rst to form a new 30 second
average for output. The output gets updated every second with a new average reading. The averaging
value can be set from 1 to 60 seconds via the User Menu.
During normal mode, the device also monitors the <ZERO / UP>, <DOWN> and <MENU> keys and takes
appropriate action. The keys are used to access the User Menu. The device also monitors the Volt/mA
jumper to determine the appropriate output scaling. The voltage span may be set via the User Menu to
either 0-5 Vdc or 0-10 Vdc.
A sensor auto-zero can be initiated by pressing and holding the internal <ZERO> switch for at least 3
seconds. If both pressure ports are close to zero pressure, then the device will calibrate with a new zero
point. The auto-zero can also be initiated by holding the ZERO terminal low for 3 seconds.
Generally, it is not recommended that a span calibration be performed in the eld unless a high-quality
calibrator with low dierential pressure ranges is available and the temperature of the sensor can be
maintained.
P. Port
Direct
The Pressure Port defaults to Direct (HIGH Port = High Pressure, LOW Port =
Low Pressure). Use <UP> or <DOWN> to change it to Reverse (HIGH Port = Low
Pressure, LOW Port = High Pressure) if it is necessary to swap the ports due to a
plumbing error.
<MENU> Press to save and advance to next menu item
6. PRESSURE PORT
Output
Direct
The analog output defaults to Direct (4-20 mA, 0-5 Vdc or 0-10 Vdc). Use <UP> or
<DOWN> to change it to Reverse (20-4 mA, 5-0 Vdc or 10-0 Vdc.
<MENU> Press to save and advance to next menu item
5. OUTPUT
Backlite
Auto
The backlight operation defaults to Auto operation. It can be set to O or On Auto
using <UP> or <DOWN>. Auto means the LCD backlight only lights when a menu
is accessed, o means it never lights and on means it is always on.
<MENU> Press to exit and return to normal operation.
7. BACKLIGHT
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Page 6
PRINTED IN CANADA
SPECIFICATIONS
Power Supply....................................24 Vac/dc ± 10% (non-isolated half-wave rectied)
Consumption....................................75 mA max @ 24 Vdc
Output Signal....................................4-20 mA sourcing, 0-5/0-10 Vdc (switch selectable)
Output Drive .....................................Current: 500 ohms max
Voltage: 10K ohms min
Protection Circuitry.........................Reverse voltage protected, transient protected
LCD .......................................................35 x 15 mm (1.4 x 0.6"), 2-line x 8-character
Accuracy .............................................± 1% F.S. of selected range (range 4 is ±2% F.S.) @ 22°C (72°F)
including hysteresis, non-linearity and repeatability
Stability ...............................................± 0.25% FS typical (1 year)
Pressure Ranges...............................4 per model (menu selectable)
Media Compatibility.......................17-4 PH stainless steel
Proof Pressure...................................2X highest range per model
Burst Pressure ...................................20X highest range per model
Maximum Line Pressure................= highest model range
Pressure Cycles.................................> 100 million
Surge Damping................................1-60 seconds averaging (menu selectable)
Zero Adjust ........................................Push-button and remote input
Sensor Operating Range...............-40 to 105°C (-40 to 221°F)
Operating Environment................0 to 50°C (32 to 122°F), 10 to 90 %RH non-condensing
Pressure Connection ......................1/4" NPT male
Sensor Housing................................IP67
Remote Sensor Cable.....................S: FT-6 plenum rated
A: Armored Flexible S/S
Wiring Connection..........................14-22 AWG screw terminal block
Enclosure............................................Polycarbonate, UL94-V0, IP65 (NEMA 4X)
F style includes thread adapter (1/2" NPT to M16) and cable gland tting
Dimensions........................................112.5 W x 116.5 H x 53.7 D mm
(4.43" x 4.59" x 2.11")
Weight.................................................650g (22.9 oz) - Including remote cables and sensors
Country of Origin.............................Canada
DIMENSIONS
116.5 mm
4.585"
53.7 mm
2.115"
0.5" NPT
82.55 mm
3.25"
68 mm
2.67"
Various lengths available
See ordering grid
112.5 mm
4.43"
99.7 mm
3.925"
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