BUFFER PUMP CONTROLLER ST-21 BUFFER TECH

Controller for BUFFER pump

The task of the controller is to turn on the device after the temperature drops below the underheating threshold measured in the upper part of the buffer (T2 sensor), and turn it off after reaching the heating threshold measured in the lower part of the buffer (T1 sensor). This prevents unnecessary operation of the device, which saves electricity and prolongs the life of the device. As a result, its reliability increases and operating costs are reduced.

The ST-21 BUFFER regulator is equipped with a system that prevents the pump from stagnating during a longer standstill. Every 10 days, the pump is switched on for 1 minute.

Contact output (accessory)

The controller can also work with any external device connected on the basis of contact/opening. The output of the additional device, when the pump is not running, is in the obtuse position, while when the pump is switched on, the contact shortens.

Controller equipment:

• CO temperature sensor
• LED display

Product parameters

• Power supply, V, 230V +/- 10% /50Hz
• Maximum driver power consumption, W, 2
• Ambient temperature, °C, 5÷50
• Maximum load on pump outlet, A, 1
• Temperature setting range CO, °C, 25÷85
• Hysteresis, °C, 1÷10
• Accuracy, °C, 1
• Sensor Temp. Resistance, °C, -30÷99
• Fuse Insert, A, 1,6
• Sensor cable length, m, 1.5