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Thermo-Hygrometer Model TH-380

Precision • Fast Response • Dual Display

Plant maintenance and containers
Clean rooms, laboratories
Air conditioning systems
Freezers, cool stores, dry rooms
Production processes, greenhouse, textile mills
• Features
High level of acccuracy, Fast Response
Simultaneous display of BOTH temperature and relative humidity (RH)
DATA-HOLD function
°C/°F switchable
Memory storage of MIN/MAX values
Auto/manual power-off selection
Interchangeable probe with connectors
Compact, light weight and simple operation


• Specifications


Measurement Range



Relative: 0 to 100% RH  

 Humidity: -40°C to +85°C

 Temperature:  -40°F to +185°F

Resolution0.1% RH, 0.1°C / 0.1°F
 Accuracy (at 25°C)


Humidity: ±0.2%(0-95%RH)   Temperature: ±0.3°C (±0.5°F)



Dual LCD display  (4 – digital)    Display of Temperature and RH


Main Function




Records MAX/MIN values Data-Hold 

 °C/°F Switchable

Auto/Manual Power off

Low power warning, Offset calibration

Function, Sensor fault warnings.

 Response (90%)



30 Sec. (With membrane filter.)    10 Sec. (Without filter.)


Humidity:     Thin Polymer capacitor.  Temperature:  100 ohm platinum RTD.
 Operating/Storage Temperature


Instrument: 0°C-50°C(+32°F-125°F)   Probe:  -20°C–85°C(5°F – +185°F)
Power SupplyOne 9V Battery(Alkaline) or AC Adaptor(Optional)
Battery LifeApprox. 160 hours typical



Instrument: 168 x 73 x 73 mm / (6.6”X3”X1.3”)     Probe: 20mm diameter x 200mm lenght

Cable Length: Approx. 920mm




Instrument: Approx. 170g(6.0 oz) without battery   Probe: Approx 100g(3.5 oz)

*Specifications are subject to change without prior notice.

Optional AccessoriesModel Number
AC AdaptorTH-3811
Plastic carrying caseTH-3812
Humidity standard saturated salt solutions
(calibration cells)
*RH Values(Typical): 11%, 33%, 55%, 75%, 85%, 95%
Replacement probeType 30

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