Hydraulic Center Hole Load Cell

Model ELC-31V Overview

ELC-31V is a vibrating wire type center hole load cell used to determine the load in rock bolts, tieback anchors, etc. It is filled with fluid with a vibrating wire pressure sensor attached to it, to convert the load into a frequency output.
A solid load cell for stress measurement in tunnel supports and struts is also available on request.


Range (kN)/ID (mm)250/35, 500/52, 750/78, 1000/105, 2000/130, 2500/0
Overload110 % fs
Calibration accuracy± 1 % fs
Non-linearity± 2 % fs from 10% to full range
Temperature limit-10° to 50°C
Temperature effect± 0.06% fs/° C
ThermistorYSI 44005 or equivalent