Cannon Instrument CAV-2000 - Manual (Page 85)

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CANNON ® Automatic Viscometer Models CAV-2100 and CAV-2200 with VISCPRO ® Instruction & Operation Manual
Version 2g — May, 2009; CANNON ® Instrument Company
2139 High Tech Road • State College, PA 16803 • USA
Checking bath temperature
After the CAV has been turned on, you may monitor bath temperature via
the thermometer in the bath or via the front panel display (For the CAV-
2100, a large font display is engaged when temperature is ± 0.5 degrees
of desired temperature). Temperature should rise until the bath has
attained the desired test temperature. Make sure the temperature bath is
set to control at the desired operating temperature. If the bath temperature
needs to be adjusted, refer to the following section for details.
Setting bath temperature
To adjust the temperature
of the CAV bath, turn on
the power to the instrument
and press the SET TEMP
button on the control panel
(see diagram). Then use the
keypad to input the desired
temperature to the nearest
0.01°. Press the ENTER
key when done.
NOTE To cancel temperature
selection after the SET
TEMP button has been
pressed, just press the
SET TEMP key again.
Service Unit operational settings
After the temperature in the bath is stable, check the CAV operational
settings. If you are using the CAV Service Unit (CSU-200), verify the
pressure/vacuum readings on the front panel dials. These gauges should
ordinarily read as follows:
DIAL SETTING: ........ DESIRED VALUE
MAIN AIR .................. 40-50 psi (275~345 kPa)
NSLV ......................... 15-20 psi (100~140 kPa)
VACUUM .................. -8 inches of mercury (-8 in Hg)
Adjust the settings if necessary, using the control regulator knobs oppo-
site the dials.
NOTE Readjustment of the Service Unit regulators is seldom necessary unless
the dial settings are outside the parameters outlined above.
100.01
°C
Tube A: 10.35 cSt Tube B: IDLE
CAV-2000 control panel