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Linear Position Sensor Calibration using SenSet® Field Programmability

Alliance Sensors' LVIT Linear Position Sensors offer SenSet® Field Programmability. SenSet® allows the installer to very simply and quickly exactly match the full scale electrical output of a sensor to the actual mechanical movement range of the device in which the sensor is installed. 

Please note that your LVIT Linear Position Sensor was calibrated at the factory to a specified measuring range. You may choose to retain this calibration if it fits your purpose, or you may choose to recalibrate your sensor  using the SenSet® feature if you desire a more precise match of the sensor’s electrical output to your mechanical device’s range of movement. This activity is usually referred to as a field calibration. 

 
To proceed with a SenSet®-based field calibration, follow these instructions:
 
1. Install the sensor into your mechanical device, leaving the sensor’s I/O unconnected. 
 
2. Connect the black wire or ground terminal to the power ground (-), and then connect the correct DC power 
input plus (+) to the sensor via the red wire or power (+) terminal. 
 
3 a. To begin the SenSet® process for voltage output, connect a DC voltmeter having the appropriate range 
with its plus (+) lead connected to the green wire or the output terminal and its minus (-) lead connected to the 
black wire or the power ground terminal. 
 
3 b. To begin the SenSet® process for current loop output, connect a DC milliammeter having the appropriate 
range with the its plus (+) lead connected to the green wire or the output terminal, and its minus (-) lead 
connected to the loop load resistor, typically 250 or 500 Ohms. Connect the other end of the loop load resistor 
to the black wire or the power ground terminal. 
 
4. Extend your mechanical device to its maximum range of motion, then connect the white (cal) wire or cal
terminal to the black wire or ground terminal for 2-3 seconds.
 
5. Fully retract the mechanical device to its zero (start) position, then connect the white (cal) wire or the cal
terminal to the black wire or ground terminal for 2-3 seconds.
 
6. The sensor’s output is now calibrated to the end points of your mechanical device's range of motion. The 
SenSet® procedure can be redone without limit, but its operational range is limited to 20% of specified full 
range, both at zero and at full range. (0 to 20% around zero, and 80 to 100% around full range). Note that both 
ends of the sensor's range must be calibrated using the SenSet™ procedure for the process to take effect.
 
7. When the SenSet® process is completed, disconnect the voltmeter, or, in the case of current loop output, 
disconnect the milliammeter and reconnect the loop load to the green wire or the output terminal. If using a 
leaded or cable output sensor, trim and insulate the end of the white (cal) wire to avoid an inadvertent 
recalibration.

8. Made a mistake or want to start over again? To reset to factory settings hold the white wire to ground for 30 (thirty) seconds erasing the user set zero and full scale end points.
 


LVIT Linear Position Sensors with SenSet® Field Programmability:

LR-19: http://alliancesensors.com/lvit-linear-position-sensor-lr-19-series

LR-27: http://alliancesensors.com/lvit-linear-position-sensor-lr-27-series

LV-45: http://alliancesensors.com/lvit-linear-position-sensor-lv-45-series

LRS-18: http://alliancesensors.com/lvit-linear-position-sensor-spring-loaded-lrs...

GHS-19: http://alliancesensors.com/lvit-spring-loaded-linear-postion-sensor-ghs-...

Below are examples of how the SenSet® feature can be used to match various mechanical ranges to the desired electrical output. The maximum range is 20% from both 0% and 100% positions (see example "A").   

Questions? Call an application engineer at 856-727-0250.

 

Our Technical Support Staff:  We have more than 150 years and three generations in the position sensor business and are expert application engineers at what we sell. We have real world experience and know how to solve your measurement challenges. Need technical help with your measurement application? Call us today 856-727-0250. 

Our Web Site: We are constantly improving our website and adding new sensors to our product offerings.

 

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Have a Question?

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