MTS Model 685.53 Grip Control Module - Manual (Page 19)

Adjusting the Output Pressure
Model 685.53 Grip Control Module Operation 19
Adjusting the Output Pressure
The output pressure of the hydraulic grip control determines the gripping force
applied to the specimen by the grips. The output pressure can be adjusted up to
the maximum output pressure of the system hydraulic power unit which is
usually 21 MPa (3000 psi).
1. Determine the required grip operating pressure.
See “Determining the Grip Operating Pressure” on page 18 and also see the
grip product information manual.
2. Put both grip controls in the release (open) position.
If it is necessary to adjust output pressure while there is a specimen in the
grips, install the specimen and turn the grip controls to the grip position
(clockwise).
3. Set the operating pressure.
Turn the Pressure control to obtain the desired operating pressure as shown
on the control panel pressure gage.