A.KRÜSS Optronic Brochure circulation thermostat
A.KRÜSS Optronic Brochure circulation thermostat, English PDF document.
View resource →Product overview
PT31 uses a 100 ml reservoir and circulation pump to supply stable thermal fluid to refractometers, polarimeters and other external equipment, with solid-state Peltier heating and cooling and no compressor.
Advantages
Peltier control and liquid circulation
- Peltier technology provides external circulation control from 8–35 °C with ±0.2 °C accuracy.
- For non-flammable liquids such as water or water/glycol mixtures; DIN 12876-1 class I.
- 100 ml filling volume; pump flow 20 l/h and pressure 20 mbar.
Operation and installation
- Two-line LCD matrix display and selection keys with clearly structured functions.
- Compact construction; 1.5 kg excluding mains adaptor and cable.
- Ambient range 5–40 °C; control-range limits require a suitable ambient temperature.
Technical data
| Item | Specification |
|---|---|
| Temperature-control range | 8–35 °C |
| Temperature-control accuracy | ±0.2 °C |
| Ambient-temperature range | 5–40 °C |
| Resolution | 0.1 °C |
| Heating capacity | 30 W |
| Cooling capacity at 20 °C | 20 W |
| Pump pressure | 20 mbar |
| Pump flow | 20 l/h |
| Display | Two-line LCD matrix display |
| Protection class | IP21 |
| Protection class (DIN 12876-1) | I; non-flammable liquids |
| Filling volume | 100 ml |
| Operation | Selection keys |
| Dimensions (W × H × D) | 108 × 199 × 145 mm |
| Weight | 1.5 kg (without mains adapter and cable) |
| Operating voltage | 100–240 VAC, 50/60 Hz |
| Power consumption (heating/cooling) | 30 W / 70 W |
| Maximum power consumption | 80 W |
The limits of the temperature-control range require a suitable ambient temperature.
Application areas
For Abbe refractometers and other small laboratory instruments requiring external circulation over 8–35 °C.
Related accessories and consumables
- Circulation-thermostat cleaner for flushing the unit and hoses and removing deposits and limescale.
- ThermostatCare A/B heat-transfer fluids for PT31/PT80 with corrosion and biofouling protection.
- PT31 replacement cover and impeller flow indicator for hoses with 6–11 mm internal diameter.
Service support
- Experienced specialists provide product selection, application and operation support.
- Calibration, maintenance and maintenance contracts can be discussed as required.
Selection guidance
Confirm target and ambient temperature, required flow and pressure, hose size, fluid flammability and thermal load against PT31 capacity.