HN-CH Series Palm-sized Temperature/Humidity Meters

The HN-CH series is reliable and accurate palm-sized temperature/ humidity meter with the measuring humidity range of 0 to 100%RH by using a new developed humidity sensor. It also provides the data logging function capable to store each 8000 readings of temperature and humidity into memory.



  • Excellent reproducibility and reliability by capacitance type humidity sensor
  • Humidity sensor with quick response in 15 seconds
  • Easy maintenance by complete interchangeable sensors
  • Handheld type, desktop type and wall-mounting type are available for various applications.
  • Data logging function capable to store each 8000 readings of temperature and humidity into memory
  • The sensor used in probe type and separated type can be used in temperature from -40 to 80°C.
  • With RS-232C or RS-485 communications interface
  • A software package for analyzing data is available.
  • Power supply of AA alkaline batteries or through AC adapter


Sensor Humidity … High Polymer capacitance type humidity sensor
Temperature … Semi-conductor type temperature sensor
Measuring range Humidity … 0 to 100%RH
Temperature … -10 to 50°C (sensor built-in type)
-40 to 80°C (separated type, probe type)
Accuracy rating
Humidity … ±2%RH (at 0 to 90%RH and 25°C)
* Except for ±3%RH in 90 to 95%RH (at 25°C)
Temperature … ±0.5°C (0 to 50°C), ±1°C (except 0 to 50°C)
Response time Shorter than 15 seconds (at 90% response, 25°C and under 0.1m/s wind flow)
Current data display Month, day, hour, minute, relative humidity or dew-point temperature, measured temperature
Logging data storage Each 8000 data of temperature and humidity
Data logging system Manual or interval
Data logging interval Continuous, 1 to 60 minutes (1 minute increment)
Read data replay Data logged per year, month, day, hour and minute, maximum/minimum/average temperature/humidity, totalized temperature
Functions High/low alarm, totalizing reference temperature/totalizing direction, logging repetition, auto-power-off, etc.
Communications RS-232C or RS-485
Working temperature range -10 to 50°C (meter)
Power supply AA batteries or 100VAC (by AC adapter: sold separately)
Dimension/weight W64 x H113 x D32mm, about 140g (meter including batteries)