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Liquidew I.S. User Manual
34 97092 Issue 6, July 2022
APPENDIX A
Appendix A Technical Specifications
Sensors
Sensor Technology Michell Ceramic Metal-Oxide Moisture Sensor
Sensor Version Easidew PRO I.S.
Measurement Range
0.001...1000 ppm
W
Higher range on request
Actual range dependent on solubility of sample fluid
Calibration Range -100...+20 °Cdp (-148...+68 °Fdp)
Accuracy
Dew point:
Moisture
content:
±1 °C from -59.9 to +20 °Cdp
(±1.8 °F from -75.9 to +68 °Fdp)
±2 °C from -60 to -100 °Cdp
(±3.6 °F from -76 to -148 °Fdp)
±10% of reading
±20% of reading
Resolution 0.1 °C from +20 to -100 °Cdp (+68...-148 °Fdp)
Temperature Measurement Pt100 with 4...20 mA transmitter
Temperature Measurement
Range
-20...+70 °C (-4...+158 °F)
Temperature Measurement
Accuracy
Accuracy ±0.2 °C
Analysis Pressure Up to 5 MPa (50 barg / 725 psig)
Analysis Temperature 0...+50 °C (32...+122 °F)
Sample Flow Rate
Minimum 0.01 l/min (0.003 GPM), Maximum 10 l/min (2.64 GPM))
0.1...0.3 l/min (0.026...0.079 GPM) recommended
Calibration
Traceable to British (NPL) and American (NIST) National Humidity
Standards
Control Unit
Display
2.8” color touch screen LCD, displaying moisture content / dew point
or O
2
and analysis temperature
Analog Output Three 4...20 mA (max. load 500 Ω) user-definable outputs
Digital Output RS485 Modbus RTU
Display Mode
Moisture content (ppm
W
)
Dew point (°C or °F)
Temperature (°C or °F)
% or ppm
V
O
2
Display Resolution
0.1 °Cdp, 0.1 °Fdp, 0.01 ppm
W
, 0.1 °C temp,
0.01 % / 0.5 ppm
V
O
2
Alarms
Four alarm relays. Control action and set point are user programmable
Two Form C contacts rated 30 V DC, 5A
Non-inductive load
Two Form A contacts rated
30 V DC, 5A
Non-inductive load
I.S. Barriers Galvanic isolation type, integrated to Control Unit
Power Supply
85...265 V AC 47/63Hz or 18...28 V DC
30 V A maximum power consumption
Enclosure
19” sub rack unit
Dimensions: 132 x 483 x 375mm (5 x 19 x 14.75”) (h x w x d)
(100mm (4”) minimum rear clearance depth for cables and vents)
Operating Environment Indoor, safe area, 0...+50 °C (+32...+122 °F), < 90 %rh