The Capacitance Free Length Driver is a self contained system for driving the non-contact probe. The driver electronics produce an output voltage, which is proportional to the length of the spring at the probe. Longer springs (closer to the probe) produce more positive output voltages.

The output voltage offset must be adjusted to near zero for a nominal length spring. Probe Zero adjustments can be made by a Digital to Analog Converter output voltage from the users data acquisition system or by a ten-turn potentiometer that can be purchased with the system.

The probe driver is mounted with two screws (M3-0.5). Do not loosen or remove the probe connector nut. See Figure 3 for panel cutout specifications. The maximum depth of the threaded mounting holes is 9.5mm (3/8 inch).

• Modular system design
• Seamlessly integrate spring gauging into your coiler controls
• Flexible configuration
• Designed for coiler manufacturers
• Probe with non–contact sensor and integral micrometer
• VDC length feedback signal to your CNC control

• Capacitance Free Length Gage Datasheet (528 KB)
• Capacitance Free Length Gage User Manual (720 KB)