YOKOGAWA DL750 - Connecting a Bridge Head (Only on Strain Modules)

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IM 701210-05E
Making Preparations for Measurements
3
3.10 Connecting a Bridge Head (Only on Strain
Modules)
Strain is measured by connecting a strain gauge bridge (bridge head) or a strain gauge
transducer to the strain module.
This section will mainly describe the procedures and precautions related to the
connection of the bridge head (Model 701955/701956/701957/701958). For the
connection of other strain gauge bridges or strain gauge transducers, see the respective
manuals.
CAUTION
Only connect a strain gauge bridge (bridge head) or a strain gauge transducer
to the strain module. Connecting other devices or applying a voltage that
exceeds the values indicated below to the strain module may damage the input
section.
• Maximum input voltage (between Input+ and Input–)
10 V (DC+ACpeak)
• Maximum allowable common mode voltage (between each terminal and
earth ground)
42 V (DC+ACpeak) (CAT I and CAT II, 30 Vrms)
Connecting the Strain Gauge
The bridge head (701955/701956/701957/701958) supports six types of connection
methods: single-gauge method, single-gauge three-wire method, adjacent-side two-
gauge method, opposite-side two-gauge method, opposite-side two-gauge three-wire
method, and four-gauge method. For details, see the manual that came with the bridge
head (701955/701956/701957/701958).
If you are using a strain gauge bridge or a strain gauge transducer other than the bridge
head (701955/701956/701957/701958), see the respective manuals.
Connecting the Strain Module and the Bridge Head
When Using the Strain Module (701270) and the Bridge Head (701955/701956)
Using the cable that came with the bridge head (701955/701956), connect the Strain
Module (701270) and the bridge head.
Strain Module
701270 (STRAIN_NDIS)
Cable
Bridge head
701955/701956
When Using the Strain Module (701271) and the Bridge Head (701957/701958)
Using the cable that came with the bridge head (701957/701958), connect the Strain
Module (701271) and the bridge head.
Cable
Bridge head
701957/701958
Strain Module
701271(STRAIN_DSUB)