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Optidew Vision Fundamental, Accurate and virtually Drift-Free Dew-Point Measurement
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The Optidew Vision precision dew-point hygrometer works on the proven, fundamental optical dew-point measurement principle, giving unmatched and drift-free long-term performance. It offers a wide measurement range from the equivalent of <0.5 to 100% RH at ambient temperatures from -40 to +90°C.
Optidew Vision provides a high definition display of measurement, two linear outputs in addition to serial communications, allowing set-up and monitoring by a suitable computer or PLC system or via specific Optidew Vision logging software. An adjustable volt-free contact alarm means that Optidew Vision can be used for direct process control.
Product Features
- Fundamental, accurate and drift-free dew-point measurement
- Measurement Range equivalent to <0.5 to 100% RH from -40 to
+90°C ambient
- ±0.2°C dew-point accuracy (±0.15°C optional)
- High pressure version to 25 MPa (250 Barg) available
- Elegant bench standing housing with panel mount option available
- Free application software
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Technical Specification |
| Measurement Range |
1-stage: -30 to +90°C dew point
2-stage: -40 to +90°C dew point
High temperature: -20 to +130°C dew point |
| Measurement Accuracy |
±0.2°C dew point
±0.1°C temperature
±0.15°C dew-point accuracy optional |
| Measurement Units |
°C, °F for dew point and temperature; % RH: gm-³ g/kg-¹ aw; ∆ (t-tdp) |
| Response Speed |
1°C sec-¹ + settling time (dew-point dependent) |
| Power Supply |
90 to 264 V, 47/440 Hz. IEC Connection with integral filter |
| DEW POINT SENSOR
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| Mirror |
Gold plated copper, high temperature sensor-316 stainless steel |
| Temperature Measurement |
4 wire 100 Ω 1/3 DIN Class B Pt100; 3 mm dia x 150 mm long stainless steel probe |
| Sample Flow Rate |
0.1 to 2 Nl/min (in sampling block) |
| Maximum Velocity |
10 msec-¹ (direct insertion)
30 msec-¹ (with sintered guard fitted) |
| Pressure |
2 MPa (20 Barg)
25 MPa (250 Barg) optional |
| Ingress Protection |
IP66 (NEMA 4)
IP65 (NEMA 12) 25 MPa (250 Barg) sensor |
| Cable Length |
2m (30m max) |
| REMOTE PRT |
| Temperature Measurement |
4-wire 100 Ω 1/10 DIN class B Pt100 |
| DISPLAY UNIT |
| Resolution |
0.1 for ºC, ºF and % RH, 0.01
for gm-³ and g/kg-¹ |
| Outputs |
Analogue: Two channels 4-20 mA or 0-20 mA
Digital: RS-232 (RS-485 optional)
Alarm: Volt free contact, 2A @ 30VDC
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| Status LEDs |
Power on, DCC and alarm status |
| Operating Temperature |
-20 to +50°C ambient |
| Enclosure |
Bench standing case with carry handle
Panel mounting kit option |
| Ingress Protection |
IP54 (NEMA 2) |
OPTIONS:
High accuracy sensor
High temperature sensor
Sintered sensor guards-stainless steel/HDPE |
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Applications |
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