28
WT.050.700.000.DE.IM.0319
Description
DEPOLOX
®
400 M
3.
3.8
Sensors
The sensors are screwed into the cell body cover of the flow cell module
and connected to the electronic module.
The pH and fluoride sensor can also be installed via the Y-style flow-
through assembly and connected to the flow cell module.
3.8.1
DEPOLOX
®
5 C - 3-electrode cell
See “3-electrode cell” on page22.
3.8.2
pH sensor
The pH sensor is designed as a pH single-rod measuring cell.
The pH-sensitive element is the membrane made of special silicate
glass, a rounded tip at the lower end of the pH sensor. The reference
electrode is a silver/silver chloride electrode (Ag/AgCl) and, together with
the pH electrode, forms the measuring cell. The reference electrode is
the stable electrical reference point for voltage measurement.
The electrolyte is a saturated potassium chloride solution. As the chloride
concentration of the electrolyte remains almost constant, the potential of
the reference electrode is also constant. Salt rings as an additional salt
depot further increase the service life of the pH sensor.
A ceramic membrane permeable for the electrolyte provides the electri
-
cal connection to the measuring solution. This ceramic membrane is par
-
ticularly suitable for the treatment of water in swimming pools and baths
and drinking water, as the electrolyte can only flow slowly through the
pores of the ceramic pin, thus ensuring very long service life for the entire
pH sensor.
The glass electrode is installed in an electrolyte reservoir (transport con
-
tainer) with diluted electrolyte which protects the sensitive membrane,
keeps the membrane moist and thus ensures that the measuring cell is
ready for immediate use. If the pH sensor is not used, e.g. over the win
-
ter, the pH sensor must be installed in the transport container with diluted
electrolyte (KCl tank with stand and 5 ml KCl solution).
The pH sensor can be installed in the pressure-free and pressurized ver
-
sion of the flow cell modules DEPOLOX
®
5 C and VariaSens C. The pH
sensor can also be installed in the Y-style flow-through assembly for indi
-
vidual measurement.
Содержание WALLACE & TIERNAN DEPOLOX 400 M
Страница 1: ...WALLACE TIERNAN DISINFECTION ANALYZER DEPOLOX 400 M Version 1 00 and later OPERATING MANUAL...
Страница 2: ...2 WT 050 700 000 DE IM 0319 DEPOLOX 400 M Please note Original operating manual...
Страница 36: ...36 WT 050 700 000 DE IM 0319 Description DEPOLOX 400 M 3...
Страница 74: ...74 WT 050 700 000 DE IM 0319 Installation DEPOLOX 400 M 5...
Страница 118: ...118 WT 050 700 000 DE IM 0319 Maintenance DEPOLOX 400 M 7...
Страница 137: ...DEPOLOX 400 M Wiring diagrams 9 137 9 Wiring diagrams...
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Страница 140: ...140 WT 050 700 000 DE IM 0319 Wiring diagrams DEPOLOX 400 M 9...
Страница 141: ...DEPOLOX 400 M Explanations and Certificates 10 141 10 Explanations and Certificates 10 1 Declaration of Conformity...
Страница 142: ...142 WT 050 700 000 DE IM 0319 Explanations and Certificates DEPOLOX 400 M 10...
Страница 143: ...DEPOLOX 400 M Explanations and Certificates 10 143 10 1 1 CSA certificate...
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