YOKOGAWA Vigilant Plant EXA TB Series, Руководство пользователя

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<4. OPERATION>
4-2
IM 12E04A02-02E
4.1.4 Adjustment for Leveling Detector
There are ripples on the
measuring surface.
Measuring cell
The measuring surface is as
smooth as a mirror finish.
(a) Measurement is impossible.
F040102.ai
(b) Measurement is possible
B
Screw A
Sample outlet
Measuring cell
Figure 4.1 Lower Part of Detector Figure 4.2 Water Level of Detector
1. For the turbidimeter with a sampling system, as the detector level has been adjusted
before shipment from the factory, normally it is not necessary to be adjusted for horizontal
adjustment (adjustment for fl owrate of Sec. 4.1.9 is necessary). If the sampling system is
not provided, or level adjustment is needed even with the sampling system provided, place
a level at the drain outlet of the measuring cell and adjust the level so that the detector is
level in two orthogonal directions with the B screws (in four places) shown in Figure 4.1 (see
Figure 4.3).If a level is not available, visual adjustment may be acceptable. In this case,
make the adjustment so that water spills out uniformly from the drain outlet of the measuring
cell.
Adjustment screw
Lock nut
F0403.ai
Measuring cell
First loosen the lock nut and then turn the adjustment screw.
When adjustment is completed, lock the screw by tightening
the lock nut.
Figure 4.3 Level-Adjustment Screw
4.1.5 Supplying Cleaning Water
Con fi rm that the fl owrate of the cleaning water is adequate when “zero water” is fl owing.
1. Open cleaning water valve SV2 using the [SV2] key of the converter.
Note 1: There is no SV2 valve for models with Suf fi x code -NN or -A1.
2. Open valve V4 and con fi rm that the water is not splashing.
3. Close valve SV2.
4. Close the detector.
Note 2: For Suf fi x code -A1, close V4 and open it subsequently to clean the cell.
3rd Edition : May. 31, 2010-00