Section 3
m V Calibration and Measurement
The m V mode has two ranges. The meter will automatically select
the most appropriate range as follows:
0 to ±400mV with resolution O.lmV
±400m V to ±2000m V with resolution 1 m V
Absolute mV
0 Connect the electrodes
@ Press the Mode key to select m V function
0 Clear any existing data. (Press Clear for 5 seconds)
8
Absolute m V readings may now be made by immersing the
electrodes in the sample and recording the reading.
Relative mV
Follow the procedure for Absolute mV from Oto 0
8 Immerse electrode(s) in the standard or blank solution. Wait for
a stable reading and press Enter. The display will automatically
zero and the CAL flag will be displayed.
0
m V values relative to the standard solution may now be taken
by immersing in the sample and recording the reading.
Section 4
Use of the recorder output
0
Connect the recorder via the red and black 4mm sockets on
the back panel. (Red positive, Black negative)
Ensure
Mode
Range
Display
Recorder
that the re-
corder is set
Ion
0-200
mV/10
for the appro-
pH
0-200
7.00pH
70.0mV
priate range,
as shown
mV
±200
500mV
50.0mV
below.
oc
±200 25.0
°
C
25.0mV
8
