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P3100 & P3200 Series
Users Manual
3. Gently rotate the weight stack clockwise, such that it is turning between
DO NOT rotate weights when the piston is against the top or bottom limits
of travel.
4. Allow a few moments for the system to stabilize before taking any readings,
Large, sudden changes in pressure will cause the system temperature to
rise or fall, which can cause instrument readings to change as the fluid in
the system expands or contracts, thus increasing or decreasing the
pressure.
5. For the next higher calibration point, repeat from step 1 above.
6. To measure reducing pressures, remove the necessary weights, and turn the capstan
7. Depressurize the system by turning the capstan FULLY OUT.
Never release the system pressure without turning the capstan
fully out, as sudden depressurization will cause the weight
stack to fall quickly, which may damage the piston assembly.
8. Remove weight stack.
4-2
approximately 10 and 60 rpm. Avoid side-loads when turning the weights by placing
the palms of the hands on either side and "rolling" the stack by pulling in opposite
directions, see Figure 4-2.
Figure 4-2. Weight Rotation
especially after large changes in system pressure.
out so that the weight stack floats at the correct height, then rotate clockwise.
Note
W Caution
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