1 overview, 1 instrument 1.2 purpose 1.3 circuit diagram, 1 instrument – Metrohm 773 pH/mV Simulator User Manual
Page 3: Test of insulation resistance, Socket for the reference electrode (re), Sockets for the working electrode (we), Selection switch for measured quantity, Temperature compensation for ph measurement, Measurement switch
1.1 Instrument
773 pH/mV Simulator
1
1 Overview
1.1 Instrument
773 pH/mV Simulator
x100
x10
x1
-
-
14,3k
PT1000
PT100
RE
WE
WE
ON/OFF
pH
U/mV
-
+
20
6
4
2
18
16
14
12
10
8
0
+
+
0
20
25 40 60
80
100
C
1000
~0,002
pH=7
U=0mV
i
R /M
1
On/Off switch (with pilot lamp)
The instrument switches itself off automatically after 50 minutes.
2
Test of insulation resistance
3
Sockets for checking the temperature measuring input, polariza-
tion sources and conductivity meters
4
Socket for the reference electrode (RE)
5
Sockets for the working electrode (WE)
6
Selection switch for measured quantity
7
Temperature compensation for pH measurement
8
Measurement switch
9
Impedance switch: Simulation of the electrode impedance
Table on top panel with exact notation of measured values.
Battery compartment on the bottom panel (rear panel for series 2).
Type plate on rear panel.
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2
3
4
5
6
7
8
9