Pola HP52 Differential thermostat for efficient heating, cooling and ventilation

General Description

The Pola HP52 is a differential thermostat for independent monitoring and control of temperature in 2 zones with respect to their temperature difference.
A sensor in each location is used to give the temperature difference.

2no. thermistor sensors are supplied with ranges of -50.0/115.0 Deg.C or -58.0/239.0 Deg.F.

For a spare SX sensor, please click here.

Also available as 96 x 96mm front panel mounting or IP54 surface/wall mount (Pola HP52w), it's large 20mm display makes for easy reading.
With 0.1 Degrees resolution, adjustable hysterisis from 0.2 Deg. and scale in C or F, the result is a versatile accurate differential thermostat.

Applications

Solar heating control
Ground sourced heat pumps control
Efficient crop store temperature control
Dual source heating control
Process selection

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
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