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CALIBRATION
All pressure ranges are factory calibrated and no calibration is necessary. The user may adjust the zero
point if desired when changing ranges for example. Make sure the unit is warmed up for at least 10
minutes (1 hour is best) before making a zero adjustment. With both ports open to the ambient pressure,
press and hold the ZERO button for at least 3 seconds. Release the button after at least 3 seconds and
the device will calculate and store the new zero point.
Generally, it is not recommended that the span calibration be performed in the field unless a high quality
calibrator with low differential pressure ranges is available and the temperature of the sensor can be
maintained. Contact the factory for information on this type of calibration.
SPECIFICATIONS
Pressure Ranges .............................±4", ±2", ±1", 0-4", 0-2", 0-1" WC
±8", ±5", 0-8", 0-5", 0-3" WC
±12", ±10", ±6", 0-12", 0-10", 0-6" WC
±20", ±15", ±10", 0-20", 0-15", 0-10" WC
±1000 Pa, ±500 Pa, ±250 Pa, 0-1000 Pa, 0-5000 Pa, 0-250 Pa
±2000 Pa, ±1000 Pa, ±500 Pa, 0-2000 Pa, 0-1000 Pa, 0-500 Pa
(6 per model, switch selectable)
Accuracy ...........................................±1% F.S. of selected range (minimum range is ±1.5 %F.S.)
@ 22°C (72°F) including hysteresis, non-linearity and repeatability
Measurement Type .......................Differential (single port), Static, Velocity, & Total Pressure
Response Time ...............................250 ms
Stability .............................................<±0.5% F.S./year typical
Thermal Effects ...............................<±3% over compensated range
Compensated Range....................0 to 50°C (32 to 122°F)
Proof Pressure .................................40" W.C. (100" for 10" & 20" models)
Burst Pressure .................................60" W.C. (200" for 10" & 20" models)
Operating Conditions ..................0 to 50°C (32 to 122°F), 5 to 95 %RH, non-condensing
Power Supply ..................................20-28 Vac/dc (non-isolated half-wave rectified)
Supply Current ...............................<4 mA for voltage output, 20 mA max for current output
Input Voltage Effect ......................Negligible over specified operating range
Protection Circuitry .......................Reverse voltage protected and output limited
Output Signal ..................................4-20 mA (2-wire), 0-5 or 0-10 Vdc (3-wire), field selectable
Output Drive @ 24 Vdc ................
Current:
400Ω max
Voltage:
10KΩ min
Zero Adjustments ..........................Push-button auto-zero
Wiring Connections ......................Screw terminal block (14 to 22 AWG)
Pressure Connection ....................Barbed ports for 5 mm (0.170" ID) flexible tubing
Conduit Connection .....................1/2" NPT conduit or cable gland
Display ...............................................31/2" digit LCD, 0.4" digit height
Enclosure ..........................................Polycarbonate UL94-V0, IP65 (NEMA 4X)
F style includes thread adapter (1/2" NPT to M16) and cable gland fitting
Approvals .........................................CE, RoHS
Country of Origin ...........................Canada
follows:
4-20 mA
Pressure = [(Output current - 4 mA) / 16 mA] x 2 x Range - Offset
0-5 Vdc
Pressure = (Output voltage / 5 V) x 2 x Range - Offset
0-10 Vdc
Pressure = (Output voltage / 10 V) x 2 x Range - Offset
In the case of ± 2” wc, 4 mA or 0 V = -2” wc and 20 mA or 5 V or 10 V = +2” wc. Since the transmitter is
linear, 0” wc would be 12 mA or 2.5 V or 5 V.
IN-GE-LPXXXS-02
Copyright © Greystone Energy Systems, Inc. All Rights Reserved Phone: +1 506 853 3057 Web: www.greystoneenergy.com
