Product Introduction
The DHM2 Ventilated Psychrometer primarily consists of two identical mercury thermometers and a ventilator. It features a simple structure, strong craftsmanship, and is easy to learn and use. The DHM2 Ventilated Psychrometer is mainly used for measuring air temperature and relative humidity. Its key advantage is its suitability for field operations, making it a secondary measurement standard for temperature and humidity.
Technical Parameters
Ambient Temperature: Can operate normally in environments from -10°C to 45°C when measuring air humidity
Humidity Measurement Range: 10%RH to 100%RH
Thermometer Measurement Range: Two types: -36°C to 46°C and -26°C to 51°C
Thermometer Scale Division Value: 0.2°C
Ventilation Speed Around Thermometer Bulb After Ventilator Starts: At the end of the 4th minute: >2.5 m/s, at the end of the 6th minute: >2.2 m/s, change in ventilation speed per minute before the end of the 6th minute: <0.2 m/s
Total Operating Time of Ventilator: >9 minutes
Dimensions: 92.5 mm × 92.5 mm × 415 mm
Weight: 1 kg 

Zhengzhou Aidi produces DHM2 Ventilated Psychrometer, supplies coal drill cuttings desorption instruments, deep hole sampling devices, pressure measuring instruments, geological exploration desorption instruments, borehole flowmeters, mine extraction and outburst prevention equipment, true density measuring instruments for coal, gas content measuring instruments, automatic initial gas emission rate measuring instruments, diffusion rate measuring instruments, gas parameter instruments for coal extraction pipelines, borehole coal powder circulation devices