GB
11258421.09
01/2012
GB/D
WIKA operating instructions temperature transmitter T32.xS
31
Recommended tools for terminal screws:
Model
Screwdriver
Tightening torque
T32.1S
Cross head (Pozidriv tip)
size 2 (ISO 8764)
0.4 Nm
T32.3S
Slotted, 3 mm x 0.5 mm
(ISO 2380)
0.4 Nm
9.1 Power supply, 4 ... 20 mA current loop
The T32 is a 2-wire temperature transmitter. Depending on the
version, it can be supplied with various types of power supply.
Connect the positive line of the power supply to the terminal marked
with ⊕, the negative line of the power supply to the terminal marked
with ⊖.
With flexible leads we recommend the use of crimped connector
sleeves. The integrated reverse polarity protection (wrong polarity on
the terminals ⊕ and ⊖) prevents the transmitter from damage. The
following maximum values are applicable:
■
Model T32.xx.000: DC 42 V
■
Model T32.xx.0IS: DC 30 V
■
Model T32.xx.0NI: DC 40 V
The T32.xS temperature transmitter requires a minimum terminal
voltage of DC 10.5 V. The load must not be too high, as otherwise, in
the case of relatively high currents, the terminal voltage at the trans-
mitter will be too low.
The T32 is equipped with terminal voltage monitoring ('under-voltage'
detection).
If too small a voltage is detected at the terminal (< 10 V) the error is
signalled on the output (< 3.6 mA).
9. Electrical connections