Vers. No. 6.1
48 Released: 25/04/2017
4 Connecting the modules → Q.bloxx A101: Connecting sensors and I/O
Fig. 4-22 A101, measurement of resistance and Pt100/1000 probes.
Information about the types of circuit and the respective advan-
tages and disadvantages can be found in Section 6.3, Connecting
sensors with sensing leads, page 143.
4.8.5 Thermocouple
For connecting thermocouples you need a special connecting
plug which contains the comparative measuring point (cold point
compensation) required for thermocouples. The plug can be
obtained under the designation Q.bloxx Terminal CJC-A101 from
Gantner Instruments GmbH. You can connect the following types
of thermocouple: B, E, J, K, L, N, R, S, T and U.
Alternatively, you can also use two the
r
mocouples or a reference
temperature source.
You will find information on the comparative measuring point and
on the measurement with a reference temperature source in
Section 6.6, Measuring with thermocouples, page 148.
Fig. 4-23 A101, measurement with thermocouple using Q.bloxx
Terminal CJC-A101.
4.8.6 Full and half-bridge transducers
With (resistive) full bridges (strain-gauge full bridges) all connec-
tions are occupied. If the sensor has no sensing lea
ds, you specify
this during the module configuration (Type column). With half
2-wire circuit 4-wire circuit
2
3
2
5
3
4
4 (–)
3 (+)
Q.bloxx Terminal CJC
CJC–
CJC+
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