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Optidew Optical Dew-Point
Transmitter |
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The Optidew high performance optical dew-point transmitter
is based on the proven, fundamental optical dew-point
measurement principle, giving long-term unmatched driftfree
performance. It offers a wide measurement range from
the equivalent of <0.5 to 100% RH at ambient temperature
(dew point range: -40 to + 90°C, and up to 130°C with high
temp option). Optidew provides two linear 0/4-20 mA outputs
and RS232 serial communications, allowing confi guration
and monitoring by a suitable computer or PLC system or via
specifi c Optidew logging software. An adjustable isolated
alarm contact allows Optidew to be used for direct process
control. An optional high defi nition alphanumeric display
provides local indication of the measured moisture and
temperature values.
Caractéristiques produits
- 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
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Spécifications techniques |
| Performance
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Measurement Range
1-stage
2-stage
High Temperature |
-30 to +90°Cdp
-40 to +90°Cdp
-20 to +130°Cdp |
| 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)
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| Response Speed |
1°C/sec plus settling time (dew point dependant) |
| Power Supply |
85 to 264 V AC, 47/440 Hz |
| Dew-Point Sensor
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| 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 l/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 | Two channels 0/4-20 mA |
| Digital | RS232 (RS485 optional) |
| Alarm | 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 |
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