This product is no longer available and has been replaced by: 4WFBS120. Some accessories, replacement parts, or services may still be available.
4WFB120 120 Ohm 4-Wire Full Bridge Module


The 4WFBS120 provides the same functionality as the 4WFB120, but the new module has two external pins that allow customers to perform shunt calibrations.



Back Plane Resistors 1 kohm/1 kohm
Ratio Tolerance ±0.2% (at 25°C)
Power Rating 0.25 W
Completion Resistor 120 ohm
Tolerance ±0.01% (at 25°C)



The 4WFB120 is compatible with our multiplexers.

Datalogger Considerations

The 4WFB120 is measured with the BrFull Instruction in CRBasic, and with Instruction 6 (Full Bridge) in Edlog. The 4WFB120 uses one differential analog input; an adjacent analog ground channel accepts the "ground prong" of the 4WFB120. Not all datalogger terminal strips have this sequence on all channels, so please check your datalogger's wiring panel to confirm channel assignments, especially if you plan to use multiple Terminal Input Modules.

The 4WFB120 is not compatible with the CR200(X)-series dataloggers. The lead wire that emanates from the head of the 4WFB120 connects to a datalogger excitation channel.

Please note that if a CR10X will be used to measure thermocouples in the same application, newer CR10X Wiring Panels and the CR10XTCR Reference Thermistor (with its accompanying Thermocouple Cover) are deep enough to cover the datalogger input channels with a Terminal Input Module attached; older CR10TCRs are not deep enough.

4WFB120 Compatibility by Datalogger

CR200(X) Series CR800/CR850 CR1000 CR3000 CR9000X

Compatible Retired Dataloggers

CR500 CR510 CR10 CR10X 21X CR23X CR9000 CR5000 CR7X
** *

*As shipped, the prongs on the 4WFB120 are too short to fit the CR7. If you're determined to use the 4WFB120 with a CR7, you can solder wire to the prongs, thereby extending their length.

**For the CR9000 and CR9000X, the CR9050 and CR9052 are compatible; the CR9051 is partially compatible.