Alfanet 79 Hygrostat Range
The Alfa 79 is a compact three stage hygrostat for panel mounting with a neutral zone.
The default program has functionality to humidify / dehumidify and a minimum / maximum alarm. The thermostat can also be programmed with three stages of humidification increase or three stages of dehumidification.
This unit has a range of 0/+100% RH with a read-out per 1% RH.
Humidity sensors from the RH 95 or RH 980 range can optionally be connected to this unit.
Supplied with 12Vac. A special transformer can optionally be delivered.
The Alfanet 79 and Alfanet 79 PI variations have a RS-485 network connection for read-out and data logging on the Alfanet PC software.
The default program has functionality to humidify / dehumidify and a minimum / maximum alarm. The thermostat can also be programmed with three stages of humidification increase or three stages of dehumidification.
This unit has a range of 0/+100% RH with a read-out per 1% RH.
Humidity sensors from the RH 95 or RH 980 range can optionally be connected to this unit.
Supplied with 12Vac. A special transformer can optionally be delivered.
Variations
The Alfa 79 PI variation has a 0/+10Vdc P(I) output and can be connected to the following humidity sensors: LC 95-3, RH 95-2 or RH 980 (with a 0-1Vdc output)The Alfanet 79 and Alfanet 79 PI variations have a RS-485 network connection for read-out and data logging on the Alfanet PC software.
Technical Specification
Housing: Black ABS plastic
Dimensions: 35 x 77 x 71,5 mm (Panel cutout: 28 x 70 mm)
Front connection: Screw terminals on the rear side
Power input: 12 Vac, 50/60 Hz (‑10/+5%)
Measure range: 0/+100% RH, reading per 1% RH
Accuracy: ± 0.5% of the range
Controls: Humidification / dehumidification, or 3 stages of either humidification or dehumidification (internally programmable) plus minimum/maximum alarm
Sensor: 12 Vdc for sensors in the RH 95/2of RH 980 series (depending on the type)
Relay: Dehumidify SPST contact 250V/5A (NO) Humidify SPST contact 250V/5A (NO) Alarm SPDT contact 250V/5A (NO/NC) (all relays one common, non inductive)