Optidew

 Optical Dew-Point Transmitter
A state-of-the-art digital dew-point transmitter with cooled mirror technology providing high performance, fundamental measurement, maximum flexibility and low cost of ownership.





Product Features

  • Precision process dew point, %RH and temperature measurement
  • Measurement Range <0.5 to 100% RH, -40 to +90°Cdp
  • ±0.2°Cdp accuracy (±0.15°C optional)
  • Fundamental drift free dew-point measurement
  • Rugged NEMA 4X industrial housing
  • High temperature sensor option to +130°C
  • Optional local display
Optidew

Technical Specification

Performance
Measurement Range
    1-stage
    2-stage
    High Temperature

-30 to +90°Cdp at sensor temperature of 20°C
-40 to +90°Cdp at sensor temperature of 20°C
-20 to +130°Cdp at sensor temperature of 20°C
Measurement Accuracy ±0.2°Cdp
±0.1°C temperature
±0.15°Cdp accuracy optional
Measurement Units °C, °F dew point; % RH; °C, °F temperature; g/m³ g/kg; aW; ∆ (t-t dew point)
Response Speed 1°C/sec plus settling time (dew point dependant)
Power Supply 85 to 264 V AC, 47/440 Hz
Dew-Point Sensor
Mirror options available Gold plated copper
Solid gold
High temperature sensor - 316 stainless steel
Temperature Measurement 4 wire Pt100, 1/3 DIN class B
Sample Flow Rate 0.1 to 2 Nl/min in sampling block
Max Velocity 10 m/sec direct insertion
30 m/sec with sintered guard
Pressure 2 MPa (20 barg)
25 MPa (250 barg) optional
Ingress Protection IP66 (NEMA 4)
IP65 25 MPa (250 barg) sensor (NEMA 12)
Cable Length - Remote 2m (250m max)
Remote PRT
Temperature Measurement 4-wire Pt100 1/10 DIN class B
Transmitter Electronics
Resolution 0.1 for °C, °F and %RH
0.01 for g/m³ and g/kg
Outputs
    Analog
    Digital
    Alarm

Two channels 0/4-20 mA
RS232 (RS485 optional)
Volt free contact, 2 A @ 30 V DC
Status LEDs Power on, DCC and alarm status
Operating Temperature -20 to +40°C ambient
Enclosure 304 stainless steel
Ingress Protection IP66 (NEMA 4X)
Cable Pack Power and RS232 cables

Applications

Metrology Research & Development

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