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HMP45C-LC Temperature and Relative Humidity Probe
Services disponibles
Réparation No
Etalonnage No
Support gratuit No

Aperçu

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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Avantages et caractéristiques

  • Bien adapté pour les applications à long terme, sans surveillance
  • Précis et robuste
  • Configured for use with the MetData1 Weather Station or CS110 Electric Field Meter

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Description technique

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.

Compatibilité

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.

Spécifications

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


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:
    • Against Factory Reference: ±1% RH
    • Field-Calibrated Against References: ±2% (0% to 90% range);
      ±3% (90% to 100% range)
  • 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


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