YOKOGAWA RC400G, Руководство пользователя

Страница: 83 / 141

<5. Converter Operation>
5-30
IM 12F4A1-01E
If it is necessary to stop the measuring tank cleaning function, operate keys in the following
procedure:
(a) Select function code "9.". → on
(Cleaning execution)
→ oFF
(Cleaning stop)
(b) Every time [>] key is pressed, on and oFF are alternately
displayed. → on ↔ oFF
(c) Select on (execution) or oFF (stop). → oFF
(d) Press [ENT] key to enter it. → oFF
(Once flashes.)
(16) Selection of Sand Filter Cylinder Cleaning Function “execution/
stop” (Function code “A.”)
In this function code, sand filter cylinder “execution/stop” should be set. If “on (execution)” is
selected, sand filter cylinder cleaning is executed through the cleaning sequence selected with
function code “8.”.
For residual chlorine analyzers of the relevant specifications, cleaning execution is already set in
shipment. Thus, since normally cleaning is executed, it is unnecessary to specifically set it again.
If it is necessary to stop sand filter cylinder cleaning function, operate keys in the following
procedure:
(a) Select function code "A.". → on
(Cleaning execution)
oFF
(Cleaning stop)
(b) Every time [>] key is pressed, on and oFF are alternately
displayed. → on ↔ oFF
(c) Select on (execution) or oFF (stop). → oFF
(d) Press [ENT] key to enter it. → oFF
(Flashes once.)
(17) Selection of Out-of-sample Detecting Function “execution/stop”
(Function code “b.”)
If open status occurs between the electrodes without supply of sample water in the measuring
tank, the diffusion current is stable even if the applied voltage is changed.
This analyzer has an out-of-sample detecting function utilizing the above fact (for details, see
subsection 6.1.3).
The out-of-sample detecting function operates only in <MEAS.> mode and if out-of-sample is
detected, <FAIL> lamp lights and a <failure> contact signal is output.
In this function code, out-of-sample detecting function “execution/stop” should be set.
Out-of-sample detection “execution” is already set on shipment.
If the function is to be stopped, operate keys in the following procedure:
(a) Select function code "b.". → on
(Detection execution)
oFF
(Detection stop)
(b) Every time [>] key is pressed, on and oFF are alternately
displayed. → on ↔ oFF
(c) Select on (execution) or oFF (stop). → oFF
(d) Press [ENT] key to enter it. → oFF
(Flashes once.)
(18) Concentration Display Unit Selection (Function code “c.”)
Either “mg/l” or “ppm” can be selected as the unit of residual chlorine concentration displayed in
the converter.
On shipment, the specified unit has been set to be displayed.
If this setting is to be changed, operate keys in the following procedure to set the unit again:
(a) Select function code "c.". → _ _1
(mg/l)
_ _ 2
(ppm)
14th Edition : Jul. 15, 2020