Repair And Calibration - Farr HD8625 Technical Manual

Hydraulic power tong
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T
M
orque
easureMenT
Reference Checking Your Torque Measurement System (continued):
Tension Load Cell (continued):
e.
Perform a simple calculation to determine the expected indication on the torque gauge based on the known hoisted weight.
This is a calculation that must be performed using imperial units (eg., pounds and feet). The calculation is: [KNOWN WEIGHT]
x [ARM LENGTH (in feet)]. For example, if the arm length is 36 inches and the hoisted weight is 1000 lbs the calculation is:
1000 x (36/12) = 3000
Therefore, the expected indication on the torque gauge should be 3000 lbs-ft.
4.

Repair And Calibration

Return the load cell and indicator gauge to the authorized repair facility for repairs and calibration.
hD8625 8-
" 35K T
5
/
ong
8
T
M
echnical
anual
6.7

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