200M Meteorological System
No drift/hysteresis, no sensor calibration required, self-diagnostics and continuous unattended operation
The Model 200M is a complete instrument for the measurement of Atmospheric Dew Point, Ambient Temperature, % Relative Humidity, or other Psychrometric Variables. It employs the very reliable optical chilled mirror sensing technique which provides a primary measurement of dew point, and is traceable to NIST. The Model 200M is ideally suited for installations requiring continuous, automatic, and unattended measurement of humidity over a very wide range.
• Primary measurement technique
• High accuracy and reliability
• Certificate of Traceability to NIST provided
• Sensing scheme discriminates between dew and contamination
• Reduces maintenance requirements
• No drift, no hysteresis
• Fast response
• No sensor calibration required
• Self-diagnostics and continuous unattended operation. No balancing or other adjustments required
• Chilled mirror sensor selection required
| Range: | |
| Dew Point: | -23 to 50ºC (-10 to 122ºF) D1 -50 to 50ºC (-58 to 122ºF) D2 |
| Ambienet Temperature: | -50 to 50ºC (-58 to 122ºF) |
| % Relative Humidity: | Approximately 5% to 95%, D1 (Equivalent Range) Approximately 1% to 95%, D2 |
| Accuracy: | |
| Dew Point and AT: | ±0.25ºC (0.5ºF) |
| % Relative Humidity: | ±1.0 to 1.5% |
| Dew Point Depressions: | 45ºC (81ºF), D1 65º (117ºF), D2 |
| Temperature Sensors: | PRT (Platinum Resistance Thermometer), 100 ohms at 0ºC |
| Output(s): | 0-5 VDC or 4-20mA over span (DP) TTL compatible clean mirror signal |
| Power: | 90-260 1 VAC, 50-400 Hz, 40 watts maximum. RFI and Line Surge Protection provided. |
| Sensor: | D1, D2 are one- and two-stage dew point (DP) sensors |
| Selection: | AT is an Ambient Temperature sensor |
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