EA2 Online Hygrometer

Measures and displays dew point and moisture content for use in a wide range of moisture applications

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Easy to install and maintain, the Easidew Online Hygrometer measures and displays dew point and moisture content for use in a wide range of moisture applications. The Easidew Online display provides analog, digital, and dual relay alarm outputs. This hygrometer is compatible with the entire Easidew Transmitter range to provide local readings as well as re-transmitted control signal.

• Measurement range -100 to +20 °C (-148 to +68 °F) dew point

• Dew point or ppmV moisture content output

• Accuracy ±2 °C (±3.6 °F) dew point

• 4 to 20 mA output

• Modbus RTU over RS485 output

• Dual configurable alarm outputs

• Choice of AC or DC Power Supply

• Sample block and cable included

• Traceable 13-point calibration certificate

Sensor Oxygen Service	Optional: Cleaned for enriched oxygen service
Sensor Housing Material	316 stainless steel
Dimensions	Sensor: L=132mm x ø45mm / L=5.2” x ø1.77” (with connector cable) Monitor: 1/8 DIN Case, 96 x 48 x 85mm / 3.78 x 1.89 x 3.35” (w x h x d)
Filter (Sensor Protection)	Standard: HDPE <10μm Optional: 316 stainless steel sintered guard <80μm
Sensor Process Connection	5/8” - 18 UNF
KF40 Flange Accessories	Flange for 5/8” 18 UNF process connections
Sensor Weight	150 g (5.29 oz)
Sensor Electrical Connections	MiniDIN 43650 form C
Online Sensor Cable	0.8, 2, 5, 10 meter (2.62, 6.5, 16.4, 32.81 ft) connector/cable available
Sensor Diagnostic Conditions (factory programmed)	Sensor fault: 23 mA Under-range dew point: 4 mA Over-range dew point: 20 mA
Measurement Range	-110 to +20°C (-166 to +68°F) dew point; -100 to +20°C (-148 to 68°F) dew point; non-standard dp ranges and ppmV ranges available on request
Accuracy	±2°C (±3.6°F) dew point
Response Time	5 mins to T95 (dry to wet)
Repeatability	0.5°C (0.9°F) dew point
Sensor Calibration	Traceable 13-point calibration certificate
Electrical Specifications
Online Output Signals	4-20 or 0-20 mA, Modbus RTU over RS485; dual programmable relay alarms
Online Output	Dew point or moisture content
Maximum Analog Output Scaled Range	Dew point: -110 up to +20°C (-166 up to +68°F); Moisture content in gas: 0 up to 3000 ppmV
Online Supply Voltage	AC: 85 to 264V; DC: 24V
Online Current Consumption	60 mA maximum
Electrical Safety	EN61010-1
Operating Specifications
Operating Temperature	Sensor: -40 to +60°C(-40 to +140°F); Monitor: 0 to 50°C (+32 to +122°F)
Compensated Temperature Range	Sensor: -20 to +50°C (-4 to +122°F); Monitor: not applicable
Storage Temperature	Sensor: -40 to +60°C (-40 to +140°F); Monitor: -10 to 60°C (+14 to +140°F)
Operating Pressure	45 MPa (450 barg / 6527 psig) maximum
Sensor Flow Rate	1 to 5 Nl/min mounted in standard sampling block; 0 to 10 m/sec direct insertion
Mechanical Specifications
Ingress Protection	Sensor: IP66 in accordance with standard BS EN 60529:1992+A2:2013; NEMA 4 protection in accordance with standard NEMA 250–2014 Monitor: IP65 (NEMA 4X) front panel only