Kaman ThreadChecker User Manual Download Page 3

Kaman Aerospace Corporation 

Kaman Precision Products 

Measuring & Memory Systems 

217 Smith Street 

Middletown, CT 06457 

www.kamansensors.com or  860-632-4442

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ThreadChecker 

Kaman’s ThreadChecker Measuring System is a noncontact linear proximity measuring 

system. This low-cost, easy-to-use system makes precision static and dynamic 

measurements of the presence or absence of a thread. 

Features Summary / Advantages 

Easy to Use

Universal Electronics for All Sensor Types and Target Types

Built in Self Test

Small size for efficient system integration: less than 4 cubic inches (80cc)

Flexible packaging and performance.

Several sensor options.

Flexible Switched Output Options (window or level comparator / inversion of limit)

available to user

Low power consumption

ThreadChecker Unit

 

The ThreadChecker system consists of two subassemblies: the sensor with integra

l

 

cable, and the signal conditioning electronics module with power and output cable. The 

ThreadChecker electronics uses a standard 24AWG cable to bring +15 Vdc to +30 Vdc 

into the electronics and provide outputs for the analog voltage and switch functions

Theory of Operation 

The ThreadChecker system is an eddy current system.  The sensor coil is resonated 

and the amount of impedance change in the output is measured by the electronics. The 

proximity of the target to the sensor coil will cause the sensor coil to change impedance. 

The signal is then processed and filtered to obtain an analog voltage proportional to 

the target position or displacement.  

Cable Connections and Power I/O Cable Color Chart:  

Wire Color 

Signal 

BROWN 

Vin 15-30vdc 

BLUE 

GND 

WHITE 

SWITCHED OUTPUT 

BLACK 

Vout 0-10v 

Copyright © 2019

PART NO: 860510-001A 

Last Revised: 2019.10.22

Summary of Contents for ThreadChecker

Page 1: ...Products Copyright 2019 PART NO 860510 001A Last Revised 2019 10 22 Measuring Memory Systems 217 Smith Street Middletown CT 06457 www kamansensors com or 860 632 4442 Page 1 of 12 ThreadCheckerTM Nonc...

Page 2: ...installed and operated per the manufacturer s recommendations conforms with the protection requirements of EC Council Directive 89 336 EEC on the approximation of the laws of the member states relatin...

Page 3: ...nsumption ThreadChecker Unit The ThreadChecker system consists of two subassemblies the sensor with integral cable and the signal conditioning electronics module with power and output cable The Thread...

Page 4: ...Adjustment and Calibration The ThreadChecker requires calibration to the users configuration before use NOTE solid red on the power LED means that it does not recognize the sensor or the sensor is di...

Page 5: ...ns with a simple calibration sequence 1 Connect the sensor and power source to the electronics Allow the system to warm up for a minimum of 5 minutes 2 With the sensor in air i e not in a hole or near...

Page 6: ...ty mode the switch is open when detecting no thread and closed to ground when it detects a thread or open air Inverting the Switch Polarity The polarity of this output can be inverted in either mode s...

Page 7: ...switch output is pulled to ground When the LED is on the output is open In standard Window comparator mode the status LED functionality is NOT affected by the limit inversion and will continue to oper...

Page 8: ...e sensor Ideally the sensor should be just slightly smaller than and centered in the untapped hole The surface of the sensor tip should be at mid depth Larger For holes that are much larger than the s...

Page 9: ...acquire a set of calibration data for all frequencies for the threaded hole The last step is to put the sensor in a non threaded hole and press the button again On release the system will acquire dat...

Page 10: ...tem not resolving thread no thread correctly Make sure sensor connector is screwed on tight before a teach Status LED never goes to red when there is no threaded hole Do a teach to make sure that it h...

Page 11: ...done using the two holes in the enclosure and an M 4 or 6 32 screw see below The DIN mount attachment can also be used to allow mounting on a DIN rail Positioning the electronics module so that it is...

Page 12: ...rent short circuit protected Impedance 50 ohms Voltage 0 10 VDC SWITCHED OUTPUT Opto Isolated Load Current 80 mA maximum AC or DC Load Voltage 30V rms 42 4V peak On Resistance 1 ohms minimum 8 ohms ma...

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