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The HMP45C is a rugged, accurate temperature and relative humidity probe. It measures relative humidity over the range of 0 to 100% RH and temperature over the range of -40° to +60°C. This probe is suitable for long-term, unattended monitoring, and is compatible with all Campbell Scientific dataloggers.
Lire la suiteThe HMP45C probe uses a HUMICAP capacitive polymer H chip to measure relative humidity and a PRT to measure temperature. Yearly HMP45C recalibrations are recommended.
To reduce the current drain, power can be supplied to the HMP45C only during measurement when the sensor is connected to the datalogger’s switched 12 V terminal. Dataloggers that do not have a switched 12 V terminal, such as the CR510 or CR7, can use the SW12V switched 12 V device to switch power to the sensor only during measurement.
Veuillez noter : Ce qui suit montre des informations de compatibilité générales. Ce n'est pas une liste complète de tous les produits compatibles.
Produits | Compatibilité | Note |
---|---|---|
CR1000 (obsolète) | ||
CR200X (obsolète) | ||
CR216X (obsolète) | ||
CR3000 (obsolète) | ||
CR5000 (obsolète) | ||
CR800 (obsolète) | ||
CR850 (obsolète) | ||
CR9000X (obsolète) |
The HMP45C should be housed in a 41003-5 10-plate naturally-aspirated solar radiation shield. The 27251 hex plug is required to mount the HMP45C in the 41003-5. At one time, this hex plug was shipped with the radiation shield but it no longer is. The41003-5 mounts to a tripod or tower mast, crossarm, or user-supplied pole.
Tension d'alimentation | 12 Vdc nominal (typically powered by datalogger) |
Consommation | ≤ 4 mA (active) |
Diamètre de câble | 0.8 cm (0.3 in.) |
Diamètre du capteur | 2.5 cm (1 in.) |
Longueur du capteur | 25.4 cm (10 in.) |
Poids | 0.27 kg (0.6 lb) |
Humidité relative |
|
Capteur | Vaisala’s HUMICAP H-chip |
Gamme de mesure | 0.8% à 100% RH (non-condensing) |
Plage de sortie du signal | 0.008 à 1 Vdc |
Accuracy at 20°C (against factory reference) | ±1% RH |
Accuracy at 20°C (field-calibrated against references) |
|
Dépendance à la température | ±0.05% RH/°C |
Stabilité à long terme | Typically, better than 1% RH per year |
Temps de réponse | 15 s with membrane filter (at 20°C, 90% response) |
Temps de préchauffage | 500 ms |
Température |
|
Capteur de température | 1000 ohm Platinum Resistance Thermometer |
Gamme de mesure | -39.2° à +60°C |
Plage de sortie du signal | 0.008 à 1.0 V |
Accuracy at -40°C | ±0.5°C |
Accuracy at -20°C | ±0.4°C |
Accuracy at 0°C | ±0.3°C |
Accuracy at 20°C | ±0.2°C |
Accuracy at 40°C | ±0.3°C |
Accuracy at 60°C | ±0.4°C |
Nombre de FAQ au sujet de(s) HMP45C-L: 1
The HMP60-L (with the Campbell Scientific cable) cannot be used with the 41003-5 10-Plate Radiation Shield without the use of additional hardware. For more information, refer to the Compatibility information on the HMP60-L product page. The standard radiation shield for the HMP60-L is the 41303-5A.