Campbell CR800 Series - Current Measurements - Details

Section 8. Operation
344
StrainCalc() Instruction Equations
StrainCalc()
BrConfig Code Configuration
3
Half-bridge strain gage. One gage parallel to + , the other
parallel to -
1
:
4
Full-bridge strain gage. Two gages parallel to + , the
other two parallel to -
1
:
5
Full-bridge strain gage. Half the bridge has two gages
parallel to + and - , and the other half to + and -
1
:
6
Full-bridge strain gage. Half the bridge has two gages
parallel to + and - , and the other half to - and +
1
:
1
• : Poisson's Ratio (0 if not applicable)
• GF: Gage Factor
• V
r
: 0.001 (Source-Zero) if BRConfig code is positive (+)
• V
r
: –0.001 (Source-Zero) if BRConfig code is negative (–)
and where:
• "source": the result of the full-bridge measurement (X = 1000 • V
1
/ V
x
)
when multiplier = 1 and offset = 0.
• "zero": gage offset to establish an arbitrary zero (see FieldCalStrain() in
FieldCal() Examples
(p. 217)).
StrainCalc Example: See FieldCalStrain() Examples (p. 228).
8.1.2.6 Current Measurements — Details
Related Topics:
• Current Measurements — Overview (p. 68)
• Current Measurements — Details
(p. 344)