PRO-series Model E3 Electrodeless Conductivity Transmitter
6
CONDENSED OPERATING INSTRUCTIONS
C. CALIBRATING THE TRANSMITTER -- (continued)
•
With “ZERO? (CAL: EXIT)” selected, press
ENTER key
. After the “ZERO: CONFIRM
ACTIVE?” screen appears, press
ENTER key
again to return the analog output to its active
state (MEASURE screen appears).
•
With “ZERO? (CAL: REPEAT)” selected, press
ENTER key
to repeat zeroing.
A. Make sure that the sensor is dry before zeroing.
B. Press
MENU key
to display a “MAIN MENU” screen. If the
screen is not
showing, use
×
×
or
Ø
Ø
key
to display it.
C. Press
ENTER key
to display
.
D. Press
ENTER key
again to display
.
E. Press
Ø
Ø
key
twice to display
.
F. Press
ENTER key
to display the “ZERO: IN DRY AIR?” screen.
G. With the dry sensor held in air, press
ENTER key
again to start automatic zeroing. (During
zeroing, the analog output is automatically “held” at the last measured value.)
H. After the “ZERO: CONFIRM CAL OK” screen appears, press
ENTER key
to end zeroing.
I.
After the “ZERO: CONFIRM ACTIVE?” screen appears, press
ENTER key
to return the
analog output to its active state (MEASURE screen appears).
2.
Prepare a reference solution that has a conductivity value within the measuring range that you
set for the transmitter. For best accuracy, the value of the solution should be near the typical
measured process value. For details on preparing a solution, refer to step 1 and TABLE E in
PART THREE, Section 4.3, subsection “COND CAL Method.”
3.
Thoroughly rinse the clean sensor in de-ionized water. Then immerse the sensor in the prepared
reference solution.
Important: Allow the sensor and solution temperatures to equalize.
De-
pending on their temperature differences, this may take up to 30 minutes.
NOTE:
Suspend the sensor to prevent it from touching the container.
Simply laying it into the
container will produce calibration error.
Calibration Tip!
If the “COND CAL: CONFIRM FAILURE?” screen appears at any time during
calibration, press
ENTER key
to confirm. Then, use the
×
×
or
Ø
Ø
key
to select between “CAL:
EXIT” or “CAL: REPEAT” and do one of the following:
•
With “COND? (CAL: EXIT)” selected, press
ENTER key
. Then, after the “COND CAL:
CONFIRM ACTIVE?” screen appears, press
ENTER key
again to return the analog output
to its active state (MEASURE screen appears).
•
With “COND? (CAL: REPEAT)” selected, press
ENTER key
to repeat calibration of the
point.
(continued on next page)
