Instruction manual

83
MODEL XMT-P pH/ORP SECTION 9.0
CALIBRATION — pH
14. The top line shows the actual reading. The transmitter also identifies the
buffer and displays the nominal buffer value (buffer pH at 25°C). If the
displayed value is not correct, press é or
ê
to display the correct
value. The nominal value will change, for example from 9.91 to 10.02
pH. Press ENTER to store.
15. The screen at the left appears momentarily.
16. If the calibration was successful, the transmitter will display the offset
and slope (at 25°). The display will return to the screen in step 6.
17. If the slope is out of range (less than 45 mV/pH or greater than 60
mV/pH) or if the offset exceeds the value programmed in Section 7.4, an
error screen appears. The display then returns to the screen in step 6.
18. To return to the main display, press MENU then EXIT.
19. Choosing Setup in step 7 causes the Buffer Stabilize screen to appear.
The transmitter will not accept calibration data until the pH reading is
stable. The default requirement is a pH change less than 0.02 units in
10 seconds. To change the stability criteria:
a. Enter the desired stabilization time
b. Enter the minimum amount the reading is permitted to change in
the time specified in step 19a.
20. To return to the main display, press MENU then EXIT.
Live 10.01pH
AutoBuf2 10.01pH
Buffer Stabilize
Time: 10sec
Restart time if
change > 0.02pH
Offset 0mV
Slope 59.16@25
°C
Calibration
Error
Cal in progess.
Please wait.