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HMP45C-LC Temperature and Relative Humidity Probe
Services Available
Repair No
Calibration Yes
Free Support No

Visão Geral

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.

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Benefícios e Características

  • Well-suited for long-term, unattended applications
  • Accurate and rugged
  • Configured for use with the MetData1 Weather Station or CS110 Electric Field Meter

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Descrição Técnica

This 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.

Compatibilidade

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.

Mounting

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.

Especificações

Supply Voltage 12 Vdc nominal (typically powered by datalogger)
Current Consumption ≤ 4 mA (active)

Temperature
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
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
  • ±1% RH (against factory reference)
  • ±2% (0% to 90% range) field-calibrated against references
  • ±3% (90% to 100% range) field-calibrated against references
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

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