Calibration - Sullair ES-8 Operator's Manual And Parts List

Section 9
COMPRESSOR MAINTENANCE
AND TROUBLESHOOTING
NOTE ON TRANSDUCERS: Whenever a sensor is
suspected of fault, the recommended cause of ac-
tion is to measure the signal (pressure, tempera-
ture, etc.) with an alternate calibrated instrument
and compare readings. If readings conflict, the
electrical and/or tubing connections should be in-
spected, and if no faults are evident, then replace
the sensor and re---evaluate against the calibrated
instrument.

9.9 CALIBRATION

The Supervisor II has software calibration of the
pressure and temperature probes. This calibration
affects the offset but not the slope of the pressure
and temperature calculations. Because of this, the
most accurate method is to heat or pressurize the
transducer to its operating value. If this is too diffi-
cult, room temperature/open atmosphere calibra-
tion is adequate. Calibration may only be done
while machine is stopped and unarmed.
To enter calibration mode, you must press the fol-
lowing keys in sequence while in the default status
36
display mode: " ", "Y", "B
in calibration mode, you will see a screen like the
following:
CAL
0
In the above example, "0" refers to the amount of
adjustment (in psi or _F, "97" refers to the current
value of P1).
To make adjustments, press the "Y" (UP ARROW)
key to increase the value; press the "B
(DOWN ARROW / LAMP TEST) key to decrease the
value. The number on the left will increase or de-
crease always showing the total amount of adjust-
ment. Maximum adjustment is ¦ 7.
The DISPLY key exits, wiping out changes to the
current item, while saving changes to any previous
items. The PROG key saves the current item and
advances to the next. All temperatures and pres-
sures may be calibrated individually.
", PROG. Once
P1
97
"