PR381 Temperature and Humidity Calibration Device


  • Humidity can be controlled over wide temperature area(5~50℃)
  • Excellent characteristics of humidity control
  • Special temperature and humidity controller
  • Automatic/manual defrosting
  • Powerful environmental adaptability
  • Powerful human interface
  • Supporting PANRAN Smart Metrology APP
  • Working cavities of various sizes

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PR381 Temperature and Humidity Calibration Device

The PR381 integrates many advanced technologies and is a highly intelligent temperature and humidity verification device. The device is mainly used for calibration special calibration equipment such as hair temperature and humidity gauges (meters), dry-wet bulb thermometers, digital temperature and humidity meters as well as other special temperature and humidity sensors.

PR381 series temperature and humidity standard device is a high performance generating device of temperature and humidity, which can be used to calibrate all kinds of digital and mechanical thermo-hygrometers. It adopts the latest temperature and humidity control technology of PANRAN. When the temperature and humidity working range are widened,its humidity control speed is obviously accelerated and its stability is significantly improved. This series of products adopts the design of three-side window opening, double-side wire outlet and detachable support plate in the structure, which can make it easier for operators to carry out temperature and humidity calibration.

Products model  &  Technical parameters

Specification /Model PR381A Temperature and Humidity Standard Device PR381B Temperature and Humidity Standard Device Remarks
Range of temperature control -5°C〜65°C  
Range of humidity control 10%〜95%RH (20°C〜30°C) 10% 〜95%RH (20—30°C) PR381B can control humidity within a temperature setting data of 15°C ~ 30°C.
30%〜80%RH (5°C〜50°C) 15%〜90%RH (15°C〜20°C)
Temperature resolution 0.01°C  
Temperature uniformity ≤ 0.15°C(15°C〜30C), ≤ 0.3°C (-5°C〜65°C)  
Temperature stability ≤±0.1°C/30minutes Temperature control with external platinum resistance
Rate of temperature change ≤ ± 0.02°C/minute
Temperature accuracy ±0.1°C  
Humidity resolution 0. 01%RH  
Humidity uniformity ≤ 0.8%RH (5°C〜50°C, full range of humidity) ≤ 0.8%RH (15°C〜30°C, full range of humidity)  
Humidity stability ≤ ±0. 3%RH/30minutes(5°C〜50°C, full range of humidity) ≤ ±0. 3%RH/30minutes (15°C〜30°C, full range of humidity)  
Rate of humidity change ≤0.3% RH/minute  
Humidity accuracy ±1.0%RH (15°C〜30°C), ±1.5%RH (5°C〜50°C)  
Adjusting time of temperature and humidity (15°C  80%RH) adjusted to (30°C  10%), 60 minutes  Temperature and humidity at a stable state
(30°C  10%RH) adjusted to (15°C  80%), 50 minutes
Adjusting time of humidity (20°C  20%RH) adjusted to (20°C  80%), 8 minutes  Temperature and humidity at a stable state
(20°C  80%RH) adjusted to (20°C  20%), 10 minutes
Defrost duration 10minutes 20minutes  
Auxiliary cooling circuit Yes No Cold air cooling
Working environment 10°C〜30°C, ≤ 80%RH  
working area dimensions 50cm X 50cm X 50cm  
Dimensions 180cm X 100cm X 70cm (Height X depth X width) Pallet size not included
Power 3KW  
Power supply condition 220VAC, 50Hz  
Weight 180kg