Optidew Optical Dew-Point Transmitter

A state-of-the-art digital dew-point transmitter with chilled 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 (-40 to +194°Fdp)
  • Measurement Accuracy:
    ±0.2°Cdp (±0.36°Fdp)
    (±0.15°C (±0.27°F) optional )
  • Fundamental drift free dew-point measurement
  • Rugged NEMA 4X industrial housing
  • High temperature sensor option to +130°C (+266°F)
  • Optional local display
Optidew

More Information

Technical Specification

Performance
Measurement range
  1-stage
  2-stage
  High Temperature

-30 to +90°Cdp (-22 to +194°Fdp) at sensor temperature of 20°C
-40 to +90°Cdp (-40 to +194°Fdp) at sensor temperature of 20°C
-20 to +130°Cdp (-4 to +266°Fdp) at sensor temperature of 20°C
Measurement accuracy ±0.2°Cdp (±0.36°Fdp)
±0.1°C temperature (±0.18°F)
±0.15°Cdp accuracy optional (±0.27°Fdp)
Measurement units °Cdp; °Fdp; % RH; °C, °F temperature; g/m3; g/kg; aw; ∆ (t - t dew point)
Response speed 1°C/sec (1.8°F/sec) plus settling time (dew point dependant)
Power supply 85 to 264 VAC, 47/440 Hz
Dew-Point Sensor
Mirror options Gold plated copper
Solid gold
High temp sensor - 316 stainless steel
Temperature measurement 4-wire PT100 1/3 DIN class B
Sample flow rate 0.1 to 2 Nl/min (0.2 to 4.23 scfh) in sampling block
Maximum velocity 10 m/sec direct insertion (1968 ft/min)
30 m/sec with sintered guard (5905 ft/min)
Pressure 2 MPa (20 barg/290 psig
25 MPa (250 barg/3626 psig optional
Ingress protection IP66 (NEMA 4)
IP65 (25 MPa (250 barg/3626 psig) sensor (NEMA 12)
Cable length - Remote 2m (6.5ft)
Maximum 250m (820ft)
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: Two channels 0/4-20 mA
Digital: RS232 (RS485 optional)
Alarm: Volt free contact 2A @ 30 V DC
Status LEDs Power on, DCC and alarm status
Operating temperature -20 to +40°C (-4 to +104°F) ambient
Enclosure 304 stainless steel
Ingress protection IP66 (NEMA 4X)
Cable pack Power and RS232 cables

Applications

Metrology Research & Development

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