Metrohm 773 pH/mV Simulator - Manual (Page 4)

1.2. Purpose
773 pH/mV Simulator
2
1.2 Purpose
With the 773 pH/mV Simulator, instruments which measure poten-
tials can be aligned and checked, e.g. Titrinos, Titroprocessors, pH
meters, ion meters, etc. In addition, the input impedance of the
measuring amplifier and the insulation resistance of the accompa-
nying cable can be checked. The temperature measuring input, the
measuring input for polarized electrodes (Ipol) and conductivity
meters can also be checked.
The Simulator produces a pH value or a potential value in the range
from pH =
± 20.000 and U = ± 2000.00 mV respectively.
1.3 Circuit diagram
0.002 M Ω
1000 M Ω
WE
RE
U
R
i
pH=7
U=0mV