ProMinent DULCOMETER DMT Series Operating Instructions Manual page 41

8.2.2.2 1 point calibration
Proceed as follows to call up the calibration menu:
pH
12.5 mA
Starting
calibration
ProMinent ®
7.12 pH
21.0 ˚C
Press the CAL key
probe is immersed in the liquid sample.
Under "input" set the detection method of the buffer temperature
(correction value):
Sensor (if the pH sensor incorporates a temperature gauge) or
manual (if using a separate temperature gauge).
If you select manual, you must set the buffer temperatures under "buffer
temp." using the up and down arrow
This setting is only valid during calibration.
You can change the pH HOLD value under "HOLD". This setting is only
valid during calibration.
Remove the pH probe from the liquid sample, rinse and immerse in the
first buffer solution.
Press the CAL key
input: sensor
buffer temp. = 20.3 ˚C
or
HOLD 7.12 pH
HOLD 12.12 mA
when in the permanent display mode while the pH
/
to start automatic buffer detection:
Operating the DMT
input: manual
buffer temp. = 20.3 ˚C
HOLD 7.12 pH
HOLD 12.12 mA
keys.
Page 41