38 Part number HA029005. Issue 2.0 May-06.
5.3
Strain Gauge Calibration
The 32h8i/SG indicator is designed to operate with
symmetrical bridge type strain gauges, nominally
350
Ω
in each arm. It is generally necessary to
calibrate the instrument to the transducer in use. This
can be done in Operator Level 2 using any one of
three methods. These are:-
CELL
. Here a load cell is connected directly to the
input terminals marked and – (section 5.3.1).
COMPARISON
. The load cell is connected as
above but the calibration is compared with a reference
device or reference weight (section 5.3.2).
SHUNT
. This is so called since it refers to switching
a calibration resistor across one arm of a four wire
measurement bridge in a strain gauge transducer
(section 5.3.3).
5.3.1
To configure the different modes:-
In operator level 2:-
1.
Press
until SG.TYP is shown in the lower
display
2.
Press
▲
or
▼
to select
CeLL
,
COmp
or
shnt
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