General Tools and Instruments DPHC2001 - Manual (Page 14)

a. Adjust the temperature compensation value
* Press the " TEMP. C Button " ( 3-7, Fig. 1 ) first,
The upper display will show the measured PH values.
the lower display will show the manual temperature
compensation value.
PH
7.91
026.1
蚓
@ Use the " Left Button " ( 3-6, Fig. 1 ), " Up Button "
( 3-5, Fig. 1 ) and the " Down Button " ( 3-8, Fig. 1 ) to
adjust the manual temperature compensation value.
b. Adjust the PH 4 default calibration value
* When the manual temp. compensation values
be adjusted. Press the " TEMP. C Button "
( 3-7, Fig. 1 )once again to adjust the PH 4
default calibartion value.
The upper display will show the values of " 4.00 " and
the lower display will show the " PH 4 default calibration
value ".
PH
4.00
04.03
12