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Description
The Alfa 21 is a digital thermostat for wall mounting or panel mounting.
The range from the Alfa 21 is -50/+150 °C with a read-out per degree. The Alfa 21-DP has a range from -10/+90 °C with a read-out per tenth of a degree.
All settings, i.e. the choice between the function of cooling or heating, are made by the internal parameters.
The Alfanet 21 has a network connection for read-out and data logging on the Alfanet PC software. The Alfa 21 does not have this network connection.
The Alfa 21 is supplied directly with 230Vac. Other supply voltages are possible on request.
The range from the Alfa 21 is -50/+150 °C with a read-out per degree. The Alfa 21-DP has a range from -10/+90 °C with a read-out per tenth of a degree.
All settings, i.e. the choice between the function of cooling or heating, are made by the internal parameters.
The Alfanet 21 has a network connection for read-out and data logging on the Alfanet PC software. The Alfa 21 does not have this network connection.
The Alfa 21 is supplied directly with 230Vac. Other supply voltages are possible on request.
Alfanet 21 0/+100°C
Price on Request
Serienummer: 904.010110
Technical specifications
Type:
Alfanet 21
Housing:
Black ABS plastic
Dimensions:
144 x 72 x 50 mm (hwd)
Front:
Polyester
Front connection:
Screw terminals
Power input:
230 Vac, 50/60 Hz, (-10/+5%)
Measure range:
0/+100°C
Controls:
By push buttons on the front
Sensor:
SM 811 (PTC sensor, 1000 Ohm at 25°C) (not included)
Relay:
SPDT Contact 250V/16A (C-NO), 8A (C-NC) (not inductive)
Accuracy:
± 0.5% of the range
Network:
RS-485 Network Alfanet
Series:
Alfanet 21
Functions:
Cooling, heating
Number of sensors:
1
Voltage:
230 V
Housing:
Building
Description
The Alfa 21 is a digital thermostat for wall mounting or panel mounting.
The range from the Alfa 21 is -50/+150 °C with a read-out per degree. The Alfa 21-DP has a range from -10/+90 °C with a read-out per tenth of a degree.
All settings, i.e. the choice between the function of cooling or heating, are made by the internal parameters.
The Alfanet 21 has a network connection for read-out and data logging on the Alfanet PC software. The Alfa 21 does not have this network connection.
The Alfa 21 is supplied directly with 230Vac. Other supply voltages are possible on request.
The range from the Alfa 21 is -50/+150 °C with a read-out per degree. The Alfa 21-DP has a range from -10/+90 °C with a read-out per tenth of a degree.
All settings, i.e. the choice between the function of cooling or heating, are made by the internal parameters.
The Alfanet 21 has a network connection for read-out and data logging on the Alfanet PC software. The Alfa 21 does not have this network connection.
The Alfa 21 is supplied directly with 230Vac. Other supply voltages are possible on request.