Q.series
Gantner Instruments GmbH
67
4 Connecting the modules → Q.bloxx A107: Connecting sensors
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.
4.14.5 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-A107 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 thermocouples 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. 4-57 A107, measurement with thermocouple using Q.bloxx
Terminal CJC-A107.
4.14.6 Full-bridge transducer
With (resistive) full bridges (strain-gauge full bridges) four con-
nections are occupied. If the sensor has sense leads, you
should
connect them to the relevant supply lines (1 and 5 or 6 and 10).
The bridge excitation voltage is 2.5 V.
3, 7 (–)
2, 6 (+)
Q.bloxx Terminal CJC
CJC–
CJC+
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