Installation; Commissioning / Electrical Connection - WIKA A2G-60 Betriebsanleitung

5. Installation / 6. Commissioning / Electrical connection

5. Installation

The A2G-60 duct/immersion temperature sensor can be fastened
directly to the ventilation duct using either a mounting flange or
screws.
GB

6. Commissioning / Electrical connection

Connection diagram (selection) Pt1000 / Ni1000 sensor
The instruments are designed to operate with safety extra-low voltage
(SELV). When wiring up the instruments, the technical specifications-
for those instruments should be followed. Particularly for passive
sensors, e.g. Pt1000, etc., in a two-wire configuration, the sensor
lead resistance should be taken into account. If necessary, this must
be corrected in the connected electronics. Through self-heating, the
measurement current affects the measuring accuracy. Therefore it
should not be higher than 1 mA.
In the case of a sensor with transmitter, as a rule, the transmitter
should be operated in the middle of the measuring range, since devia-
tions can occur at the range limits. The ambient temperature of the
transmitter electronics should be kept constant. The transmitters must
be operated with a constant supply voltage. The measuring range is
altered by changing the positions of the jumper links (see connection
diagram). The output value of the new measuring range is then availa-
ble after approx. two seconds.
6
Sensor Sensor
2-wire
WIKA Operating instructions air2guide Model A2G-60
3-wire
Sensor
4-wire