Campbell CR300 Series Product Manual page 87

Resistive-Bridge Type and
Circuit Diagram
Four Wire Half Bridge
Full Bridge
Six Wire Full Bridge
1
Key: V = excitation voltage; V
x
variable or sensing resistor.
2
Campbell Scientific offers terminal input modules to facilitate this measurement.
CRBasic Instruction and
Fundamental Relationship
1,2
CRBasic Instruction:
Fundamental Relationship:
1,2
CRBasic Instruction:
Fundamental Relationship:
1
CRBasic Instruction:
Fundamental Relationship:
, V = sensor return voltages; R
1 2
BrHalf4W()
BrFull()
BrFull6W()
= fixed, bridge or completion resistor; R
f
Relational Formulas
These relationships apply to
BrFull()
BrFull6W()
and
s
14. Measurements
=
74