Evoqua Wallace & Tiernan Depolox 3 plus, Руководство пользователя

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WT.050.560.001.UA.IM.0714 14
Depolox
®
3 plus ReSIDUAl ANAlYZeR
eVoQUA W3T140188
The sample water inlet must be connected to a stop valve (connection 1/4” - 18
NPT). The tapping point for the sample water must be positioned to ensure a
bubble-free flow of water and a complete mixing of the disinfectant.
The drain line must be unpressurized.
2.3 Membrane Sensors (See Dwg. 50.560.160.020 in Section 3)
WARNING: DO NOT TOUCH THE REFERENCE ELECTRODE! DO NOT TOUCH
THE MEMBRANE!
Before unscrewing the membrane cap, remove the elastomer seal to allow air
into the vent hole. Not doing this will cause a vacuum to occur which will dam-
age the membrane when unscrewing the cap. Do not remove the yellow-grey
layer on the reference electrode.
Unscrew the membrane cap from the electrode shaft and fill it to the top with
the enclosed electrolyte. Strike the electrode shaft against the membrane cap to
remove air bubbles. Clean the gold working electrode with the enclosed lapping
paper (special abrasive paper). To do this, place the special abrasive paper on
a paper towel. While holding on to a corner of the paper move the tip of the
electrode of the vertically held probe one or two times over the rough side of
the special abrasive paper. Ensure that the elastomer seal completely covers
the vent hole. While holding the electrode shaft in a vertical position, screw on
the cap onto the shaft. Surplus electrolyte will escape through the vent hole
in the membrane cap below the elastomer seal. Do not hold the vent hole or
press on the elastomer seal! If you detect air bubbles in the electrolyte, repeat
the filling process. Wash away the escaped electrolyte with water.
NOTE: The membrane cap must be completely screwed to the electrode shaft
so that no gap remains between membrane cap and electrode shaft. The
sensor requires a one- to two-hour run in time before a first calibration can
be performed. The final calibration should be done after one day.
2.3.1 Insert Membrane Sensor Into Flow Block Assembly
Position the sensor through the flow block cap such that the sensor body
touches the bottom of the water inlet assembly. The water flow should point
directly to the membrane. It may be necessary to turn the flow block cap to
find the correct position for the sensor in the water inlet assembly. Remove
any air bubbles from the membrane as they disturb the measurement. Connect
the sensor cables to the electronic module.
Under these conditions the sensor should give proper readings for three to
six months.
For connection to the Depolox® 3 plus electronics, refer to Dwgs. 50.560.155.020.
!