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2-8
SECTION 2 – OPERATING INSTRUCTIONS
1. Make certain the test cell is installed properly, the HIGH PRESSURE INLET port on the rear
of the instrument is plugged, the PUMP switch is in the OFF position, the PUMP WATER
valve is turned to the ON position, and the instrument is supplied with compressed air.
2. Turn the PUMP PRESSURE ADJUST regulator clockwise until air pressure is sufficient to
raise pressure to the desired pressure set point. Each 5 psig (34.5 kPa) air pressure results in
approximately 1000 psig (6895 kPa) hydraulic pressure. The air pressure should not exceed
100 psig (690 kPa). Note that the pump may not be capable of achieving pressures in excess
of 16,000 psig without using heat to expand the fluid and increase pressure.
3. Turn the Relief Valve knob clockwise until the release pressure is sufficient to prevent the
relief valve from opening at the desired pressure set point.
4. Turn the PUMP switch to the ON position until pressure exceeds the desired set point. Turn
the PUMP switch to the OFF position. Make certain the system is holding pressure before
proceeding.
5. Turn the Relief Valve knob counterclockwise slowly until the test cell pressure begins to drop.
Continue turning the regulator knob slowly until the pressure in the test cell equals the upper
limit of the desired test pressure.
6. Turn the PUMP PRESSURE ADJUST regulator counterclockwise until the air pressure is
approximately zero.
7. Turn the PUMP switch to the ON position.
8. Slowly turn the PUMP PRESSURE ADJUST regulator knob clockwise until the pump begins
to stroke. Continue to slowly turn the regulator knob clockwise until the lower limit for the
control pressure is achieved. Note that failure to apply any pressure to the slurry may result in
a loss of transit time signal through the slurry.
Temperature Control
Refer to the 8050/8051 Temperature Controller Manual for information on how to program and
operate the temperature controller. When the controller has been programmed and the Processor is
operating properly, the test may be started by turning the HEATER switch to the ON position and
selecting CM.1=AUTO on the temperature controller.
1. If the chiller is being used, place the coolant switch in the AUTO position. After the cool-
down segments of a temperature profile are complete, it is recommended to place the coolant
switch in the OFF position to avoid possible temperature oscillations at temperatures above
room temperature.
2. To end the test, turn the HEATER switch to the OFF position.
3. Turn the Temperature Controller OFF by pressing the Advance
controller displays CM.1 and pressing the up or down arrow buttons to select OFF.
Note: Always leave the controller in the OFF mode with the HEATER switch turned
OFF when the thermocouple is not installed in the cylinder.
Ending a Test
1. Turn ON the COOLANT switch to cool the test cell. Monitor the test cell
temperature using the Temperature Controller. Use the pump to maintain
pressure on the test cell until the cell is cool. When the temperature is below
200 ° F (93 ° C) the pump switch may be turned to the OFF position and the
PRESSURE RELEASE valve turned to the open position. Failure to maintain
button so that the
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