Note: Our current model is now the OHT which you will find here
The HOTT Temperature and Humidity transmitter is ideal for use outdoors and indoor condensing environments.
There are four models with or without the LCD display and a choice of analogue output, 0-10 Vdc or 4-20 mA for both Temperature and Humidity.
An optional Solar Radiation Shield is available for direct sunlight installations: Model RSS 100 (Not supplied)
The LCD displays alternating Temperature and Humidity and the terminal box enclosure is made of impact-resistant plastic with quick-locking screws. Rated IP65
There are four switchable temperature ranges via jumpers and a digital RH sensor with long-term stability is used.
Fine adjustment by the user is also possible.
Suitable for non-aggressive environments like refrigeration, air conditioning, ventilation and clean room technology and can also be used in outdoor installations. For accurate readings outdoors a solar radiation shield should be used. (RSS 100)
Relative humidity (in % RH) is the quotient of water vapour partial pressure divided by the saturation vapour pressure at the respective gas temperature.
Featuring: Long-term stability, Small hysteresis, With or without LCD display
Outputs
Humidity and temperature
HDTT 420 with 2 x 4-20 mA outputs
As option passive (direct) temperature output such PT100, PT1000, Nickel, NTC 10K, NTC 1.8K,NTC 20K and PTC etc.
Humidity measuring range range
0 to 100% r.H. (output corresponding to 0-10 Vdc or 4-20 mA)
Temperature measuring ranges
4 different measuring temperature ranges selectable by jumpers on pcb -35°C to +35°C, -35°C to +75°C, 0 to 50°C or 0 to +80°C.
Accuracy
- Humidity +/- 3% (20 to 80% r.H.), at +20°C, otherwise+/- 5%
- Temperature +/- 0.8 Kelvin at +20°C.
