Kaman GMS-750RS - Manual (Page 3)

www.kamansensors.com PART NO: 860527-001
Last Revised 8/23/2013
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The calibration of the GMS-750RS is a 3 point calibration. The electronics will be taught the spring
deflection using the 3 Calibration Plates.
To calibrate, remove Insertion Depth Stops.
Place the Base Plate with the two threaded guide pins on a workbench or other suitable level surface with
guide pins facing up. Set the GMS-750RS on the Base Plate between the guide pins. The center (length
and width) of the lower spring should be aligned the two guide pins.
Place the .250” Calibration Plate over the upper spring with guide pins aligned in the holes. Install a
washer and wing nut on each guide pin.
While pushing down on the .250” Calibration Plate, tighten the wing nuts until the Calibration plate is
firmly seated on the Base Plate. Check to make sure both of the legs on the Calibration Plate are in full
contact with the Base Plate.
Depress and hold the calibration pushbutton located on the side of the display enclosure with the point of
a pen or end of a paper clip for a minimum of 6 sec, the calibration LED will begin to slowly flash green.
While pushing down on the .250” Calibration Plate, loosen and remove the wing nuts allowing the
Calibration plate to release the spring compression. Remove the .250” Calibration Plate.
Place the .375” Calibration Plate over the upper spring with guide pins aligned in the holes. Install a
washer and wing nut on each guide pin.