PART THREE - OPERATION
SECTION 4 - TRANSMITTER CALIBRATION
PRO-series Model C3 Conductivity Transmitter
Rev. 0-201
50
☞
4.2 Zero Procedure
(first-time sensor
calibration only)
Zeroing/Calibration Tip!
If a “CONFIRM FAILURE?”
screen appears during zeroing or calibration, press
ENTER
key
to confirm. Then, use
×
×
or
Ø
Ø
key
to select between
“CAL: EXIT” or “CAL: REPEAT” and do one of the following:
•
With “(CAL: EXIT)” screen selected, press
ENTER
key
. After the “CONFIRM ACTIVE?” screen appears,
press
ENTER key
to return the analog output to its
active state (MEASURE screen appears).
•
With “(CAL: REPEAT)” screen selected, press
ENTER
key
to repeat zeroing or calibration.
Zero the sensor if it is being calibrated for the first time. If
not, disregard this subsection and proceed with sensor
span calibration (Section 4.3 or Section 4.4).
Recommendation:
For best accuracy when using a new
sensor, perform a “RESET CALIBRATE” using the TEST/
MAINT menu (PART THREE, Section 5.8) before zeroing.
1.
Make sure that the sensor is dry before zeroing.
2.
Press
MENU key
to display a “MAIN MENU” screen.
If the
screen is not showing, use
Ø
Ø
or
×
×
key
to display it.
3.
Press
ENTER key
to display
.
4.
Press
ENTER key
again to display
.
5.
Press
Ø
Ø
key
once to display
.
6.
Press
ENTER key
to display the “ZERO: IN DRY AIR?”
screen.
7.
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.)
8.
After the “ZERO: CONFIRM ZERO OK?” screen ap-
pears, press
ENTER key
to end zeroing.
