Pola HP57 Combined thermostat and humidstat

General Description

The Pola HP57 is a dual function digital Thermostat and Humidistat utilising 2 temperature sensors for both temperature and wet and dry bulb humidity measurment. It then calculates from first principals the actual humidity.

The thermistor sensors have a range of –50.0/115.0 Deg.C or F and 0/100 % humidity.
Alternatively you can use an electronic sensor such as RHR with the use of a HA20s power supply.

Temperature and humidity are controlled at the same time.
Max. and min. temperature and humidity reached are recorded and can be seen later.
Temperature or humidity may be displayed.
Available in 96 x 96mm front panel mounting or IP54 surface/wall mount. Large 20mm display.

The unit is supplied with 1 SX thermistor sensor for temperature control. To utilize the humidity control function there is the option of adding a wet and dry sensor (Pola SXPS) or electronic sensor Pola RHR.

Alternative the optinal Pola WT1S wet and dry bulb sensor assembly can be used with the Pola HP57.

With 0.1 resolution, adjustable hysterisis from 0.2, the result is a versatile accurate combined thermostat and humidistat.

Applications

Air conditioning control
Grain drying thermostat
Crop drying thermostat
Textile handling
Environmental control
Swimming pool enclosure control
Greenhouses
Bread provers

Technical Specification

Power supply 230V +/- 10%
Mains frequency 50Hz +/- 20%
Power consumption 4W
2 x SPDT Output Relay:
Resistive contact rating 3 Amp 230V - AC1
Inductive contact rating 1 Amp 230V - AC3
Measuring range -50.0/115.0 Deg.C
Measuring range 0/100%
Operating temperature -10/70 Deg.C
Measuring precision (Ambient 25 Deg.C) 0.1 Deg.C typical
Overall dimension 96 x 96 x 63 mm
Overall dimension (IP54 version) 98 x 125 x 75 mm