AM-200 Dew-Point Transmitters


The AM-200 is a dew-point transmitter with a 3/4” process connection. Designed for use in industrial conditions, it has a wide measurement range from -110 to + 20 °C dew point.

Based on Ceramic Metal-Oxide Moisture Sensor the Easidew 34 is available with a choice of service and warranty options for minimal cost of ownership.

  • 3/4” UNF process connection
  • Measurement ranges -110 up to +20°Cdp (-148 up to +68°Fdp)
  • Dew point or ppmV moisture content output
  • 2-wire loop power connection
  • Accuracy ±2 °Cdp (±3.6°Fdp)
  • Traceable calibration certificate
  • Low cost of ownership and easy maintenance with sensor exchange program
  • 316 Stainless steel sensor and sample blocks
  • KF40 Glove Box flange
  • MiniDIN 43650, M12 electrical connectors
  • Oxygen service cleaned
Measurement Range -100 to +20°C (-148 to +68°F) dew point
-110 to +20°C (-166 to +68°F) dew point
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
Calibration Traceable 7-point calibration certificate
Electrical Specifications
Output Signal 4-20 mA (2-wire connection, current source)
User configurable over range
Output Dew point or moisture content for ppmV
Analog Output Scaled Range Dew point: -100 to +20°C (-148 to +68°F)
Moisture content in gas: 0-3000 ppmV
Non-standard available upon request
Supply Voltage 12 to 28 V DC
Load Resistance Max 250 Ω @ 12 V (500 Ω @ 24 V)
Current Consumption 20 mA max
CE Marked Certified
Operating Specifications
Operating Temperature -40 to +60°C (-40 to +140°F)
Compensated Temperature Range -20 to +50°C (-4 to +122°F)
NOTE: The transmitter accuracy statement is only valid for the temperature range: -20/+50°C
Storage Temperature -40 to +60°C (-40 to +140°F)
Operating Pressure 45 MPa (450 barg/6527 psig) maximum
Overpressure Rating x2 operating pressure 90 MPa (900 barg/13053 psig)
Flow Rate 1 to 5 Nl/min (2.1 to 10.6 scfh) mounted in standard sampling block;
0 to 10m/sec (0 to 32.8 fps) direct insertion
Mechanical Specifications
Ingress Protection IP66 in accordance with standard BS EN 60529:1992
NEMA 4 in protection accordance with standard NEMA 250-300
Housing Material 316 stainless steel
Dimensions L=132mm x ø45mm (L=5.19” x ø1.77”) (with connector)
(Sensor Protection)
Standard: HDPE Guard <10µm
Optional:  316 stainless steel sintered guard <80µm
Process Connection and Material 3/4″ – 16 UNF
316 stainless steel
Weight 150g (5.29oz)
Interchangeability Fully interchangeable transmitter
Electrical Connections Hirschmann GDS series (DIN 4350-C)
Diagnostic conditions
(Factory Programed)
Condition   Output
Sensor Fault   23 mA
Under-Range Dew Point   4 mA
Over-Range Dew Point   20 mA
  • Compressed air Class 1 to Class 6 dryers
  • Breathing air quality and safety
  • Moisture in Hydrogen cooled electricity generators
  • Quality of inert and bulk gases
  • Monitoring controlled conditions in glove boxes
  • Quality of welding gases
  • Moisture and dew-point measurements in hazardous areas
  • Oxygen purity applications