Q.series
Gantner Instruments GmbH
53
4 Connecting the modules → Q.bloxx A102: Connecting sensors and I/O
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.
4.9.4 Strain-gauge quarter bridges
For the connection of strain-gauge quarter bridges you need a
special connecting plug which contains the completion resis-
tances. The plug can be obtained under the designation Q.bloxx
Termi
nal B4/120-A102 with120 or B4/350-A102 with 350 from
Gantner Instruments GmbH.
The
bridge excitation voltage is switched via software between
1 V, 2.5 V, 5 V and 10 V.
The plug must have the same resistance values as the strain
gauges used, because otherwise no measurement is possible.
Since, for reasons of stability, all necessary completion resis-
tances are located in the , you have to select a full bridge circuit
as the bridge type for the channel.
Fig. 4-32 A102, measurement with strain-gauge quarter bridge
using Q.bloxx Terminal B4 on Plug 2.
4.9.5 IEPE/ICP
®
sensor
The sensor is supplied with 4 mA of current from the module (cur-
rent supply).
Fig. 4-33 A102, measurement with IEPE and ICP
®
sensors, Plug 2.
4.9.6 Analog output
An analog output for voltage or current is available on Plug 1. The
selection between voltage and current is made via software.
To Next Page
Loading...
Need help?
General
