CALIBRAtE
In ProCess
EXIt
ENtER
CALIBRAtE
Cal
EXIt
ENtER
3
.20
MODEL 5081-A
SECTION 9.0
CALIBRATION — OxyGEN
2. Press CAL on the remote controller.
3. Press NEXt. the
SEnSor CAL
submenu appears. Press ENtER.
4. Press NEXt. the
Air CAL
prompt appears. Press NEXt.
5. the
In ProCESS
prompt appears. Press ENtER.
6. the
tiME dELAy
message appears and remains until the sensor read-
ing meets the stability criteria set in Section 7.6. to bypass the time
delay, press ENtER.
7. the
GrAb SPL
(grab sample) message appears. Press ENtER.
8. use the arrow keys to change the flashing display to the value indicated
by the standard instrument. Press ENtER to save.
9. Press RESEt to return to the main display.
CALIBRAtE
time delay
EXIt
NEXt
CALIBRAtE
Grab spl
EXIt
ENtER
9.6 PROCEDURE — IN-PROCESS CALIBRATION USING THE REMOTE CONTROLLER
1. the transmitter and sensor can be calibrated against a standard instrument. For oxygen sensors installed in
aeration basins in waste treatment plants, calibration against a second instrument is often preferred. For an
accurate calibration be sure that:
a. the standard instrument has been zeroed and calibrated against water-saturated air following the manu-
facturer's instructions.
b. the standard sensor is inserted in the liquid as close to the process sensor as possible.
c. Adequate time is allowed for the standard sensor to stabilize before calibrating the process instrument.
CALIBRAtE
Sensor Cal
EXIt
NEXt ENtER
CALIBRAtE
A ir Cal
EXIt
NEXt ENtER
65
