Instrument has two inputs, for cabinet and evaporator probes, which are programmable between PTC and NTC sensors
The FK203A on/off dedicated digital controller for ventilated refrigeration units such as freezer cabinets is available from Celsum Technologies.
Operating from 12-24VAC or DC, this compact panel-mounting unit - only 75mm wide x 33.5mm high - is said to be very competitively priced.
The instrument has two inputs (for cabinet and evaporator probes), which are programmable between PTC and NTC sensors, the panel is protected to IP65, and an audible alarm is fitted.
The FK203A has outputs to switch a compressor (10A resistive at 250VAC), an evaporator fan (8A resistive at 250VAC), and a defrost system (hot gas and electric systems are supported) at up to 8A at 250VAC.
A digital, voltage-free multifunction input is provided.
The working range with PTC sensors is -50 to +99C, and with NTC sensors is -40 to +99C.
