Alfa 31 Thermostat Range
The Alfa 31 is a digital rail mounting thermostat for universal use.
Available ranges include -50/+150°C, 0/+100°C and 0/+120°C with a read-out per degree.
All settings, such as the choice between cooling or heating, are made through internal parameters.
The Alfa 31 is supplied directly with 230Vac. Other supply voltages are possible on request.
The Alfa 31 DP variation has a range of -10/+40°C with a read-out per tenth of a degree.
Available ranges include -50/+150°C, 0/+100°C and 0/+120°C with a read-out per degree.
All settings, such as the choice between cooling or heating, are made through internal parameters.
The Alfa 31 is supplied directly with 230Vac. Other supply voltages are possible on request.
Variations
The Alfanet 31 variation has a network connection for read-out and data logging on the Alfanet PC software.The Alfa 31 DP variation has a range of -10/+40°C with a read-out per tenth of a degree.
Technical Specification
Housing: Black ABS plastic
Dimensions: 35 x 77 x 71,5 mm
Front: Polyester, Screw terminals
Power input: 230 Vac, 50/60 Hz, (-10/+5%)
Measure range: -50/+150°C
Accuracy: ± 0.5% of the range
Sensor Options: SM 811 (PTC sensor, 1000 Ohm at 25°C) (not included) or SM 800 (PT-100, 3-wire sensor (DIN/IEC 751) (not included)
Relay: SPDT Contact 250V/16A (C-NO), 8A (C-NC) (not inductive)
Functions: Cooling, heating
Voltage: 230 V