Campbell Scientific CS420 and CS425 PDCR 1830-8388 Pressure Transducer - Manual (Page 11)

CS420-L and CS425-L Pressure Transducers
adjustment factor =
input range
output
=
50 mV
55 mV
= .909
The excitation adjusted to output 50 mV is:
adjusted excitation
= (original excitation)*(calculated adjustment factor)
= (5000 mV)*(.909)
= 4545 mV
Use 4545 mV to excite the sensor instead of 5000 mV within either the BrFull
or BrFull6W instruction.
6. CRBasic Program Examples
6.1 Wiring for the Program Examples
6.1.1 BrFull Instruction (4-Wire Full Bridge Measurement)
Datalogger CS420-L/CS425-L
Excitation E1 Red (Supply +)
Input H1 Yellow (Output +)
Input L1 Blue (Output -)
Analog Ground AG White (Supply -)
G Clear (Shield)
The orange and black wires are not used and the ends of these wires should be
taped to prevent shorting.
6.1.2 BrFull6W Instruction (6-Wire Full Bridge Measurement)
Datalogger CS420-L/CS425-L
Excitation E1 Red (Supply +)
Input H1 Orange (Monitor +)
Input L1 Black (Monitor -)
Input H2 Yellow (Output +)
Input L2 Blue (Output -)
An. Ground AG White (Supply -)
G Clear (Shield)
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