Services Available | |
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Repair | No |
Calibration | Yes |
Free Support | No |
The HMP45C-LC is a rugged, accurate temperature and relative humidity probe. The sensor measures relative humidity over the 0 to 100% RH range and temperature over the -40° to +60°C range.
Read MoreThis version of the HMP45C has a connector instead of pigtails for connecting the sensor to a MetData1 Weather Station or CS110 Electric Field Meter. The probe uses a HUMICAP capacitive polymer H chip to measure relative humidity, and a PRT to measure temperature. Relative humidity range is 0 to 100% RH, and temperature range is -40° to +60°C. A solar radiation shield is required if the probe will be exposed to sunlight.
Supply Voltage | 12 Vdc nominal (typically powered by datalogger) |
Current Consumption | ≤ 4 mA (active) |
Temperature |
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Temperature Sensor | 1000 ohm Platinum Resistance Thermometer |
Measurement Range | -39.2° to +60°C |
Output Signal Range | 0.008 to 1.0 V |
Accuracy | See graph in HMP45C product brochure. |
Relative Humidity |
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Sensor | Vaisala’s HUMICAP H-chip |
Measurement Range | 0.8% to 100% RH (non-condensing) |
Output Signal Range | 0.008 to 1 Vdc |
Accuracy at 20°C |
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Temperature Dependence | ±0.05% RH/°C |
Long-Term Stability | Typically, better than 1% RH per year |
Response Time | 15 seconds with membrane filter (at 20°C, 90% response) |
Settling Time | 500 milliseconds |
The connector can be attached to the CS110 Electric Field Meter or MetData1 Weather Station. The CS110 has a CR1000 and the MetData1 has an on-board CR10X.
The HMP45C-LC should be housed in a 41003-5 10-plate naturally-aspirated solar radiation shield. This radiation shield mounts to a tripod or tower mast, crossarm, or user-supplied pole.
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