The load cell is built from 4 strain gauges arranged in a Wheatstone bridge. The resistances of gauges are in the range of hundreds of ohms. This type of load cell can be directly connected to DC2 series dyno controllers.
The shield wire in both cases goes to SHLD terminal in the controller.
If the wiring of the load cell is not known, the following procedure can be followed to find the correct connection with use of a simple multimeter:
6 wire load cell
- Measure resistances between load cell wires. Look for a wire pair that has resistance near 0 Ohm (short circuit). Connect both wires to EXC+ in the controller.
- Look for another pair of wires with 0 Ohm resistance. Connect them to EXC- in the controller.
- The remaining two wires go to SIG+ and to SIG-. Order is not important.
4 wire load cell
- Measure resistances between load cell wires. There are 6 measurements to make. 2 measurements will have higher resistance than the others.
- If from these 2 wire pairs there is one with a higher resistance, connect it to EXC+ and EXC-. Order is not important
- If both are the same, then it doesn’t matter which pair goes to EXC+ and EXC-.
- The remaining two wires go to SIG+ and to SIG-. Order is not important.