Greystone Energy Systems UP Series User manual

Page 1
INTRODUCTION
The Ultra Low Pressure Transducer is used to measure
dierential pressure up to 1"wc or 250 Pa. It combines
precision high sensitivity silicon sensing capabilities and
the latest ASIC technology to substantially reduce oset
errors due to changes in temperature, stability to warm-
up, long term instability and position sensitivity. It is ideal
for monitoring pressure for air or other clean inert gas.
It features bi-directional pressure measurement, an on-
board auto-zero function, a backlight LCD to display the
pressure value and an alarm relay with variable trip points.
The device is eld-congurable via the local menu.
BEFORE INSTALLATION
Read these instructions carefully before installing and commissioning the UP Pressure Transducer. 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 Ultra Low Pressure Transducer mounts using the two holes on the base of the unit. See Figure 1. Leave
enough space around the unit to connect the pressure tubing and avoid locations with severe vibrations,
excessive moisture or rapid temperature changes. It should be mounted on a vertical surface with the
pressure ports on the bottom and the cable entrance on the left.
The enclosure has a standard ½” conduit opening and may be installed with either conduit and a conduit
coupler or a cable gland type tting.
The enclosure has a hinged cover with a latch. Open the cover by pulling slightly on the latch on the
bottom of the enclosure. At the same time pulling on the cover, as illustrated in Figure 2.
A 1/2" NPT threaded connection hole is provided in the bottom of the enclosure. Screw the EMT connector
or cable gland connector in until tight. See Figure 3. 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.
Make wiring connections as per the “Wiring”illustrations on Page 2.
Swing door closed until securely latched. For added security, 2
screws are provided that may be installed in the integrated screw
tabs. See Figure 4.
Figure 1
Figure 3
Figure 2
EMT Connector
Thread adapter and
cable gland tting
Figure 4
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Ultra Low Pressure Transducer
UP Series - Installation Instructions

Page 2
WIRING
The transmitter has standard screw block connectors. Use shielded twisted pair wiring of at least 22 AWG
for all connections and do not run device wires in the same conduit with wiring used to supply inductive
loads such as motors. Disconnect the power supply before making any connections to prevent electrical
shock or equipment damage. Make all connections in accordance with national and local electrical codes.
This is a 3-wire sourcing device. Connect the positive dc or the ac voltage hot side (24 Vac/dc ± 10%) to
the POWER terminal. The supply common is connected to the COMMON terminal. The device is reverse
voltage protected and will not operate if connected backwards. It has a half-wave rectied power supply
so the supply common is the same as the signal common. Several devices may be connected to one power
supply and the output signals all share the same common. Use caution when grounding the secondary of
a transformer or when wiring multiple devices to ensure the ground point is the same on all devices and
the controller.
The analog output is available on the OUT terminal.This signal is switch selectable for either voltage or 4-20
mA active output. In voltage mode the output is 0-5 or 0-10 Vdc, selectable in the User Menu. The current
output operates in the Active mode and does not require a loop power supply. This means the signal
current is generated by the transmitter and must not be connected to a powered input or device damage
will result. Check the controller Analog Input to determine the proper connection before applying power.
Both current and voltage signals are referenced to the COMMON terminal. The voltage output signal has
a minimum load that it is able to drive, similarly the current signal has a maximum load. Follow the ratings
in the Specication section or inaccurate readings may result.
The remote zero feature may be used by wiring a dry-contact (relay only) digital output between the ZERO
and COMMON terminals. Do not apply voltage to the ZERO terminal.
The RELAY output is a normally open dry contact. This signal can be used to directly control an alarm,
ventilation fan or may be connected to a digital input of the BAS for status monitoring. Ensure any loads
connected to the relay is within the relay rating in the Specication section.
Figure 5
mA
VOLT
MENU DOWN ZERO/UP
N.O.
RELAY
B+
A-
SHIELD
OUT
ZERO
PWR
COM
OUT
ZERO
PWR
COM
Analog Input
+24 Vdc
Common
Controller
Wiring all output signals and 24 Vdc power from controller
OUT
ZERO
PWR
COM
Analog Input
Common
Controller
Common
+24 Vdc
24 Vdc Power Supply
Wiring all output signals and external 24 Vdc power supply
OUT
ZERO
PWR
COM
Analog Input
Common
Controller
Common
+24 Vac
24 Vac Transformer
Wiring all output signals and external 24 Vac power supply
Figure 6
Figure 7
NO
RELAY
Digital Input
Controller
ZERO
COM
Digital Input
Controller
Figure 8
High
Low
Relay Output
Remote Zero CURRENT
VOLTAGE
Figure 9
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Page 3
The setting has no aect unless the PCB switch is in the VOLT position. The analog
output voltage scale defaults to 0-5 Vdc. Use <UP> or <DOWN> to toggle it to 0-10
Vdc
1. OUTPUT
<MENU> Press to advance to next menu item
The pressure scale defaults to "wc. Use <UP> or <DOWN> to toggle it to Pa.
<MENU> Press to advance to next menu item
2. PRESSURE SCALE
MENU
MENU "WC
The default pressure range is bi (bidirectional ± max). Use <UP> or <DOWN> to
toggle to uni (unidirectional 0-max). Applicable units symbol is displayed.
The default pressure range is HI (± 1 “wc, ± 250 Pa, ± 0.25 “wc or ± 60 Pa depending
on the model and units). Use <UP> or <DOWN> to toggle to LO (± 0.5 “wc, ± 125
Pa, ± 0.125 “wc or ± 30 Pa depending on the model and units). Applicable units
symbol is displayed.
<MENU> Press to advance to next menu item
3. PRESSURE RANGE
4. DIRECTIONALITY
MENU "WC
MENU "WC
MENU
MENU "WC
MENU PA
STARTUP
The Setup Menu can be accessed by pressing the internal <MENU> key at any time after the start-up
mode.
Upon applying power to the device, it will enter the start-up mode. During start-up the alarm condition
is set to o so the relay is o and the analog output is set to the midpoint. The LCD will display all
segments for 2 seconds and then the software version number, such as 1.
USER MENU
The User Menu can be accessed by pressing the <MENU> key at any time after the start-up mode. Note
that the <Auto-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 an alarm condition was present then it will be reset to enter the menu and alarm operation is disabled
while in the menu (except for alarm test). 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 Setup menu operation and parameters are explained below
<MENU> Press and release to enter the SETUP menu
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Page 4
The alarm on delay defaults to 5" (seconds). It can be changed from 1-59"
(seconds) and 1-10' (minutes) using <UP> or <DOWN>.
<MENU> Press to advance to next menu item
9. ALARM DELAY
The alarm o delay defaults to 5" (seconds). It can be changed from 1-59"
(seconds) and 1-10' (minutes) using <UP> or <DOWN>.
<MENU> Press to advance to next menu item
10. ALARM DELAY
MENU
OFF MENU
The alarm test defaults to OFF. It can be set to On using <UP> or <DOWN>. This
forces the relay to activate.
<MENU> Press to advance to next menu item
11. ALARM TEST
MENU
8. ALARM TEST
The low pressure alarm limit defaults to about 25% of the range. This equals - 0.50
for the ± 1 "wc range, - 130 for the ± 250 Pa range, etc. It can be changed using
<UP> or <DOWN> throughout the range. Resolution for each range is: ± 1 "wc
(0.05), ± 0.25 "wc (0.01), ± 250 Pa (10) and ± 60 Pa (2). Note that the ± 250 Pa range
must be displayed as /10 such that it is - 25H to 25H.
<MENU> Press to advance to next menu item
MENU "WC
The high pressure alarm limit defaults to about 75% of the range. This equals +
0.50 for the ± 1 "wc range, + 130 for the ± 250 Pa range, etc. It can be changed
using <UP> or <DOWN> throughout the range. Resolution for each range is: ± 1
"wc (0.05), ± 0.25 "wc (0.01), ± 250 Pa (10) and ± 60 Pa (2). Note that the ± 250 Pa
range must be displayed as /10 such that it is - 25H to 25H.
7. HIGH PRESSURE ALARM
<MENU> Press to advance to next menu item
MENU "WC
<MENU> Press to advance to next menu item
<MENU> Press to advance to next menu item
The pressure averaging time defaults to 5" (seconds). This can be changed from
1-60" (seconds) using <UP> or <DOWN>.
5. PRESSURE AVERAGING
MENU
Only if a relay is installed. The alarm enable/disable defaults to enable (On). The
alarm can be disabled here. Use <UP> or <DOWN> to disable (OFF) the alarm. If
the alarm is disabled no alarm condition will be set. Note if the alarm is disabled,
then none of the alarm menu settings will be shown in the menu. Use <MENU> to
save and advance.
6. ALARM
<MENU> Press to advance to next menu item
MENU
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Page 5
PNEUMATIC CONNECTIONS
The two pressure ports on the enclosure are labeled High and Low. The output signal reads a positive
value when the port pressure is higher on the High port than the Low port so ensure these ports are
connected correctly. Use 1/8" to 3/16" ID exible tubing for the pressure connections. An exible silicone
tube is recommended. Arrange the tubing to minimize stress on the connections and ensure there
are no kinks in the tubing. For most accurate measurements, do not leave the Low port open to the
atmosphere, run a return line from the Low port to the vicinity of the point being measured. See Figure 8.
NORMAL OPERATION
During normal mode the device reads the pressure sensor and calculates the pressure value depending
on the device model range and the selected pressure range. The pressure value is then displayed on the
LCD and set as the output value for the analog output. The output value is updated once per second.
The output value may be aected by device settings such as the pressure averaging 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. So the output gets updated every second with a new average reading.
On start-up when the rst readings are obtained, the device averages the collected data as necessary
until the required setting is reached. For example, if only 10 readings are available and the pressure
averaging setting is 60 seconds then the output value is calculated as the average of those 10 readings.
The next output value will be an average of 11 readings. This short-averaging will continue until the
averaging setting is reached and then the output value will always be the average of 60 readings. If the
averaging value is changed during operation, this process can be repeated for the new setting.
The averaging value can be set from 1 to 60 seconds via the User Menu.
During normal mode, the device also compares the output pressure value to the alarm setpoints and
takes appropriate action. If the pressure value exceeds the setpoints then an alarm condition is set and
the device will operate in alarm mode. Alarm mode activation is controlled by certain delay times and
user settings described later.
During normal mode, the device also monitor the <UP>, <DOWN> and <MENU> keys and takes
appropriate action. The keys are used for factory conguration, factory calibration and user setup.
The device also monitors a Volt/mA switch and determines the appropriate output scaling. The voltage
span may be set via the User Menu to either 0-5 Vdc or 0-10 Vdc.
ALARM MODE
The relay alarm feature is optional.
The alarm mode has several settings that are controlled by the User Menu. The device has both high and
low alarms with setpoints set via the User Menu. The alarm setpoints can be set over the entire pressure
range with some conditions.
The relay alarm option operates as follows. High and Low setpoints can be set via the User Menu from the
minimum to the maximum pressure of the selected range, either 0-MAX or –MAX to +MAX, depending
on the current setting. When the input pressure exceeds the setpoint for the on delay time, then the relay
contacts will close. When the input pressure decreases below the setpoint for the o delay time then the
relay contacts will open again.
The alarm on and o delay times can be set from 1 to 59 seconds or 1 to 10 minutes via the User Menu. For
an alarm condition to be set the pressure value must exceed the alarm setpoint for more than the alarm on
delay time. For an alarm condition to be reset the pressure value must return to a non-alarm value for more
than the alarm o delay time. When the alarm condition is set the relay output will activate.
The backlight operation defaults to “bL.2” for Auto operation. It can be set to “bL.0”
using <UP> or <DOWN> for O or “bL.1” for On. Auto means the LCD backlight
only lights when a menu is accessed, o means it never lights and on means it is
always on. The backlight will be On during warm-up and Auto-zero modes.
<MENU> Press to exit the User Menu and return to normal operation.
12. BACKLIGHT
MENU
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PRINTED IN CANADA
Page 6
SPECIFICATIONS
SENSOR
Accuracy ............................... ±1% F.S. of selected range @ 22°C (72°F) including hysteresis,
non-linearity and repeatability
Pressure Ranges................. UPB1A: ±1", 0-1", ±0.5", 0-0.05" WC, ±250, 0-250, ±125, 0-125 Pa
UPB2A: ±0.25", 0-0.25", ±0.125", 0-0.125" WC, ±60, 0-60, ±30, 0-30 Pa
Stability ................................. ±1% F.S. (1 year)
Thermal Eect..................... ±2% F.S. max, 10 to 40°C (50 to 104°F)
Response Time ................... 1-60 seconds, (menu selectable)
Proof Pressure..................... UPB1: 100 "wc (24.9 kPa)
UPB2: 40 "wc (9.96 kPa)
Burst Pressure ..................... UPB1: 200 "wc (49.8 kPa)
UPB2: 80 "wc (19.9 kPa)
Operating Conditions ...... 0 to 60°C (32 to 140°F), 0-95 %RH non-condensing
Media Compatibility......... Dry air or inert gas
Zero Adjust .......................... Pushbutton or digital input auto-zero
POWER SUPPLY
Power Supply...................... 24 Vac/dc ±10%
Power Consumption .........37 mA max. with relay option
Input Voltage Eect.......... Negligible over specied operating range
Protection Circuitry........... Reverse voltage protected and output limited
OUTPUT
Output Signal...................... 3 wire: 4-20 mA, 0-5 or 0-10 Vdc, eld selectable
Output Drive ....................... 4-20 mA: 750 Ω max
Voltage: 2K Ω min
LCD
Display Size............................38.1 x 16.5 mm (1.5" x 0.65")
Digit Height...........................11.43 mm (0.45")
Symbols ................................ "WC, Pa
Backlight............................... Enable/disable/auto
ALARM FUNCTIONS
Alarm Relay Output.......... N.O. contact, 2 Amps @ 120 Vac or 30 Vdc
Alarm Relay Trip Point...... Upper and Lower alarms adjustable over pressure range
Alarm Relay Delay ............. 0 to 10 minutes via keypad
GENERAL
Storage Temperature ........-40 to 95°C (-40 to 203°F)
Wiring Connections.......... Screw terminal block (14 to 22 AWG)
Pressure Connections ...... Barbed ports for 1/8" to 3/16" ID tubing
Conduit Connection......... Access hole for 1/2" NPT conduit or cable gland
Enclosure.............................. Polycarbonate, UL94-V0, IP65 (NEMA 4X)
F style includes thread adapter (1/2" NPT to M16)
and cable gland tting
Approvals................................CE, RoHS
Country of Origin.................Canada
AUTO ZERO MODE
A sensor auto zero can be initiated by pressing and holding the internal <Auto-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 IN terminal low for 3 seconds.
DIMENSIONS
112.5 mm
4.43"
99.7 mm
3.93"
53.7 mm
2.11"
116.5 mm
4.585"
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