Dew-Point Hygrometer

Easidew Advanced Online

Moisture measurement online dew-point meter with pressure compensation


Easy to install and configure, the versatile touch screen Easidew Advanced Online Hygrometer can measure and display dew point, moisture content, and pressure. This display provides analog, digital, and 4 programmable relay alarm outputs with a front screen or software app display configuration.

With high performance 1% accuracy for use in Compressed Air and Gas Generation applications.

  • Measurement range -110...+20 °C (-166...+68 °F) dew point
  • Dew point or moisture content output
  • Accuracy ±1 °C (±1.8 °F) dew point
  • Pressure indication and compensation
  • Touch screen reconfiguration
  • 3 x 4...20 mA outputs and 4 relay outputs
  • Modbus RTU over RS485 output
  • Choice of AC or DC Power Supply
  • Sample block and cable included
  • Traceable 13-point calibration certificate
Performance Specifications
Measurement Range-110...+20 °C (-166...+68 °F) dew point; -100...+20 °C (-148...+68 °F) dew point
Accuracy *±1 °C from -60 to +20 °C dew point (±1.8 °F, -76...+68 °F dp)
±2°C from -100 to -60 °C dew point (±3.6 °F, -148...-76 °F dp)
Response Time5 mins to T95 (dry to wet)
Repeatability0.5 °C (0.9 °F) dew point
Sensor CalibrationTraceable 13-point calibration certificate
Auxiliary Pressure Input45 MPa (450 barg/6527 psig) maximum
Pressure CompensationLive 4...20 mA pressure transmitter or fixed programmable value
Moisture Content ScalesAutomatic compensation for ppmV, lbs/MMscf, g/m3 units
Relay Alarm Type/Rating2 x Form A, 2 x Form C 30 V DC 5A Namur compliant programmable relay contacts for process and fault conditions
Electrical Specifications
Sensor Input SignalModbus RTU over RS485
Online Output Signals3 x 4...20 mA channels; Modbus RTU over RS485; 4 programmable relay alarms
Online OutputsDew point, Moisture Content, Pressure
Maximum Analog Output Scaled RangeDew point: -110...+20 °C (-166...+68 °F); Moisture content in gas: 0...3000 ppmV
Online Supply Voltage85...265 V AC; 18...30 V DC
Online Power ConsumptionAC Power: 7.5 VA
DC Current: 170 mA @24 V DC
Electrical SafetyBS/EN61010-1: 2010
Operating Specifications
Operating TemperatureSensor: -40...+60 °C(-40...+140 °F); Process Monitor: 0...50 °C (+32...+122 °F)
Compensated Temperature RangeSensor: -20...+50 °C (-4...+122 °F); Process Monitor: not applicable
Storage TemperatureSensor: -40...+60 °C (-40...+140 °F); Process Monitor: 0...+60 °C (+32...+140 °F)
Operating Pressure45 MPa (450 barg/6527 psig) maximum
Sensor Flow Rate1...5 Nl/min mounted in standard sampling block; 0...10 m/sec direct insertion
Mechanical Specifications
Ingress ProtectionSensor: IP66 in accordance with standard BS EN 60529:1992+A2:2013;
NEMA 4 protection in accordance with standard NEMA 250–2014
Process Monitor: IP54 & NEMA Type 2 & 12K front panel only
System MaterialsSensor & Sample Block: 316 stainless steel
Process Monitor: UL Rated ABS - EpsotechAB AN2 V0
DimensionsSensor: L=119 x ø27 mm / L=4.69” x ø1.06” (no connector cable)
Process Monitor: 1/8 DIN Case, 90 x 40 x 92 mm / 3.54 x 1.57 x 3.62” (w x h x d)
Sample Block: 55.2 x 30 mm / 2.17 x 1.18”
Filter (Sensor Protection)Standard: HDPE <10μm
Optional: 316 stainless steel sintered guard <80μm
Sensor/Sample Block Process ConnectionsG1/2” BSP, 3/4” 16 UNF, 5/8” 18 UNF
Sample Block Inlet/Outlet Connections1/8” NPT
System WeightsSensor 150 g (5.29 oz); Sample Block 250 g (8.82 oz); Process Monitor 280 g (9.88 oz)
Sensor Electrical ConnectionsEasidew M12: M12 5 pin (A Coded)
Online Sensor Cable2, 5, 10 meter (6.5, 16.4, 32.81 ft) connector/cable available
Display TypeLCD touch screen 320 x 240 pixel

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