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챔버용 정밀 노점계 모델명: Optidew
► New chilled mirror hybrid sensor gives fast dynamic response to changes in humidity
► Accurate to ±0.15°C dew point, ±0.1°C temperature
► Wide measurement range from -40 to +120°C dew point
► Choice of communication methods, including Modbus TCP over Ethernet communication for easy networking
► Optional pressure transmitter for accurate calculation of ppmV & g/kg
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Industrial Grade Chilled Mirror Hygrometer - Michell Optidew
Drift-Free Affordable Humidity Measurement for Industrial Applications
The Optidew 401 and Optidew 501 are fast-responding chilled mirror hygrometers utilizing the latest developments in chilled mirror technology.
Ideal for use in industrial humidity control and precision laboratory applications.
Available in bench top and wall mount configurations as well as a transmitter version of the Optidew 501 (without a display).
Featuring ±0.15 °C accuracy across its -40 to +120 °C dew-point measurement range.
| Performance | |||
| Dew Point Measurement Accuracy | ±0.15°C | ||
| Repeatability | ±0.05°C | ||
| Sensitivity | ±0.01°C | ||
| Response | Stable measurement at +10°C dp within 1 minute | ||
| Dew-Point Sensor | |||
| Sensor | Single Stage | Dual Stage | Harsh Environment |
| Dew-Point Range(°C) | -25 to +90°C | -40 to +90°C | -40 to 120°C |
| Temperature Range(°C) | -40 to +90°C | -40 to +90°C | -40 to +120°C |
| %RH Range @ 23°C | 2.25 to 100% RH | 0.45 to 100% RH | 0.45 to 100% RH |
| Material | POM (head) Aluminium (body) | POM (head) Aluminium (body) | PEEK (head) Aluminium (body) |
| Corrosion & Saturation Protection | Active Component Isolation System | ||
| Mirror Temperature Measurement | Pt1000, Class A | ||
| Recommended Sample Flow | Ambient (environmental measurements) to 2Nl/min (flowing sample) | ||
| Pressure | 2500 kPa max | ||
| Process Connection | M36x1.5 | ||
| Remote PRT | |||
| Temperature Measurement Accuracy | ±0.1°C | ||
| Temperature Measurement | Pt100, Class A | ||
| Cables | |||
| Cable Length | 0.3, 3, 5, 10 and 20m lengths available | ||
| Minimum operating temperature | -25°C (-13°F) High temperature: -40°C (-40°F) | ||
| Maximum operating temperature | Standard: 90°C High temperature: 120°C | ||
| Remote Pressure Sensor (Optional) | |||
| Pressure Measurement Accuracy | ±0.25% FS | ||
| Pressure Measurement Range | 0-160 kPa OR 0-2500 kPa | ||
| Process Connection | 1/8” NPT-M | ||
| Control Unit | |||
| Resolution | 1 or 2 decimal places selectable | ||
| Measurement Units | °Cdp or °Fdp, Relative humidity - %, Absolute humidity - g/m3, ppmV, Mixing Ratio - g/kg, Wet Bulb Temperature (Twb) - °C, °F, Water Vapor Pressure (wvp) - Pa, Ambient Temperature - °C, °F, Pressure converted DP - °C, °F, Pressure - kPa, Bara, Barg, Psia, Psig | ||
| Enclosure | Wall Mount - Optidew 501 | Bench Top - Optidew 401 | |
| Material | ABS | ABS | |
| Analog Outputs | Two 0/4-20mA outputs (maximum load 500Ω) | Two 0/4-20mA outputs (maximum load 500Ω) | |
| Digital Communications | Modbus RTU over RS485 (standard) Modbus TCP over Ethernet (optional) |
Modbus RTU over: USB (standard) RS485 (standard) Modbus TCP over Ethernet (optional) |
|
| Alarms | 1x Process Relay, 1x Alarm Relay, Both Form C, 1A, 30Vdc. |
1x Process Relay, 1x Alarm Relay, Both Form C, 1A, 30Vdc |
|
| Inputs | 4-20mA for pressure sensor | 4-20mA for pressure sensor | |
| Data Logging | SD card slot (optional) | SD card slot (standard) | |
| Ingress Protection | IP54 (standard), IP65 (optional) | IP54 | |
| Dimensions | 220x175x75mm | 220x175x118mm | |
| Weight | Control unit: 1.5kg, Sensor: 200g | Control unit: 1.5kg, Sensor: 200g | |
| Display | 5.7” colour touch screen (optional) | 5.7” colour touch screen | |
| Environmental Conditions | -20 to +50°C, up to 100%RH non-condensing (optional) 100% RH condensing with IP65 connector version | ||
| Supply Voltage | 100 to 240VAC, 50 to 60Hz | ||
| Power Consumption | 30VA max | ||
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