Metrohm 726 Titroprocessor - Manual (Page 31)

22. . Installation Installation
726 Titroprocessor, Instructions for use 25 25
2.6.5 Sensors / Electrodes
1
Ind A2 Ind A1 Ref Pol Pt100/1000
Sensors A
Titroprocessor models 2.726.0110 and 2.726.0120 are supplied with two
built-in measuring interfaces (Sensors A and Sensors B). The models
2.726.0010 and 2.726.0020 only have one measuring interface (Sensors A)
but can be extended to two measuring interfaces at a later date with
upgrade set 6.5855.000.
The different measuring inputs of a measuring interface:
• Ind A1, A2
Input for indicator or measuring electrodes (single and combined elec-
trodes) for potentiometric determinations.
It is possible to carry out a manual measurement at one measuring input
while the second input is carrying out a titration.
• Ref
Separate reference electrode input. If combined electrodes are used this
electrode input is not required.
• Pol
Connection for polarized electrodes for amperometric and voltametric
determinations (measuring modes Upol or Ipol).
• Pt100/1000
Inputs for Pt100 or Pt1000 temperature sensors (also used for electrodes
with built-in Pt100 or Pt1000 sensors).
• Stirrer connection
Stirrer power supply (12 V, 250 mA) for operation without sample
changer. Can be used with 728 Magnetic stirrer, 722 Rod stirrer and 727
and 703 Titration stands.
The measuring inputs Ref, Ind A1 and Ind A2 (or B1, B2) can be used to-
gether as a differential amplification switch for differential potentiometry. This
is recommended for measurements or titrations in low-conductivity media
(e.g. organic solvents).