Eddy Current Sensor Model;HAD-85811-00+85745-00 Eddy current sensor is a non-contact displacement sensor based on the principle of eddy current effect. The sensor consists of a probe, a lengthened cable, and a driver. It is used to measure various operating state parameters of the rotating mechanical shaft: radial vibration of the shaft, axial displacement, rotational speed, eccentricity, and differential expansion. Name Φ5 probe and preamplifier Model number 85811-00+85745-00 Extension cable (4 meters) 85811-00+85745-00A Extension cable (8 meters) Range (mm) 1.5 1.5 Sensitivity (mv/μm) 8 8 Resolution (μm) 1 1 Operating frequency (Hz) 0-4000 0-4000 Linearity (%) 1.5 1.5 Working temperature (°C) Probe -30 to +120 Front device -30 ~ +70 Temperature drift (%°C) 0.1 0.1 Power supply -24VDC Name Φ8 probe and driver Model number 85811-01+85745-01 Extension cable (4 meters) 85811-01+85745-01A Extension cable (8 meters) Range (mm) 1.5/2 (optional) Sensitivity (mv/μm) 8 Resolution (μm) 1 Operating frequency (Hz) 0-4000 Linearity (%) 1.5 Working temperature (°C) Probe -30 to +120 Front device -30 ~ +70 Temperature drift (%°C) 0.1 Power supply -24VDC; ±12DC Name Φ11 probe and front device Model number 85811-02+85745-02 Extension cable (4 meters) 85811-02+85745-02A Extension cable (8 meters) Range (mm) 4 Sensitivity (mv/μm) 4 Resolution (μm) 3 Operating frequency (Hz) 0-4000 Linearity (%) 2 Working temperature (°C) Probe -30 to +120 Front device -30 ~ +70 Temperature drift (%°C) 0.2 Power supply -24VDC Name Φ25 probe and front device Model number 85811-03+85745-03 Extension cable (4 meters) 85811-03+85745-03A Extension cable (8 meters) Range (mm) 10 Sensitivity (mv/μm) 1mv/μm Resolution (μm) 10 Operating frequency (Hz) 0-4000 Linearity (%) 1.5 Working temperature (°C) Probe -30 to +120 Front device -30 ~ +70 Temperature drift (%°C) 0.2 Power supply -24VDC Note: Different length probes can be customized according to user requirements Tire repairing tool is used to repair and maintain all kinds of vehicle tires in garage or work shops. It includes tire repair tools, tire valve repair tools, Tire Valve Extension and wheel balance weight tools. Tire Repair Tool Kit,T-handle Repair Tools,Tyre Repair Kits Ningbo Heyu Tire Repairs Co., Ltd. , https://www.autorepairstools.com
This series of sensors is basically the same as the 7200 series products of Bentley Corporation and SD-081.082 of Germany, and can be used interchangeably. 
Eddy current sensor function