3
* Adjustment sensor.
The sensor can be adjusted by using the Sensor Offset (parameter 04).
Indicates the
ALFA(NET) 20
e.g. 2
C too much, the Sensor Offset has to de
decreased with 2
C.
* Error messages.
In the display of the
ALFA(NET) 20
the following error messages can appear:
Er
- Sensor broken. Solution:
- Check if the sensor is connected correctly.
- Check the sensor (1000
at 25
C).
- Replace the sensor.
EE
- Settings are lost. Solution:
- Reprogram the settings.
* Technical details.
Model
: ALFA 20 Thermometer
ALFANET 20 Thermometer with Network
Range
: -50/+50
C, readout per 1
C (or else see Sticker)
Supply
: 230Vac / 2,5VA 50/60Hz (or else see Sticker)
Control
: by hidden push buttons on the front.
Communication
: RS485-Network (2x twisted pair shielded, min. 0,5mm
2
)
Front
: Polycarbonate
Sensor
: SM 811/2m (1000
at 25
C)
Dimensions
: 144 x 72 x 50mm (hbd)
Panel hole
: 139 x 67mm (hb) cutout in front
- Provided with memory protection during power failure.
- Connection with screw terminals on the back side.
- Equipped with self test function and sensor failure detection.
- Special version on request available.