Waltron 9072, User Manual

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Waltron User Manual 101-054-A.1
9072 Hydrazine Analyzer
START-UP
4.2 PREPARING TO MEASURE
Before you start to measure you must perform the following procedures:
1. The electrical power supply has to be connected according to the local power
authority guidelines with the terminal box, with which the connectors to the
0(4)...20 mA analog output (see the circuit diagram on the cover plate) should be
combined.
2. The reference cell has to be filled with KCl solution. The reference cell must be
removed from the measuring cell by unscrewing the reference cell. Take out the
reference electrode and fill up the KCl solution to the level of about the beginning
of the external threading. Make sure that no air bubbles develop near the
diaphragm. Tap the cell gently if necessary. Remove any surplus of the KCl
solution and reinsert the reference electrode. Make sure that the installation of the
O-ring is correct.
3. If the sample has a conductivity of ≤ 3 μS/cm, the salt cell (option) must be filled
with granular marble (calcium carbonate CaCO3). To do this unscrew the cover
and pour in the granular marble carefully into the large cavity.
4. The probe tube is connected with tube fittings to the inlet valve. The outlet line is
placed at the measuring cell exit with a hose having a 5 mm inside diameter.
4.3 CHOICE OF OPERATING PARAMETERS
Before starting measurement, set your operating parameters. With the keys at the front
site you can move through the menu. To enter the menu, press key and insert your
code number
(Pre setting: 0000; see page 17) . With the keys and you move one
step in the vertical direction up or down and also increase or decrease numbers. With the
key SET you confirm chosen parameters, with the key ESC you jump back one step in
the horizontal direction with
no effect .
If a > sign is displayed, you can go with the key right ahead in a sub-level.
The menu consists of eleven levels. You find your present position on the right top of the
display.
1
st
Menu level Range > shows range settings. The value is corresponding to the
maximum analog output current of 20 mA. Press key and make your choice by setting
digit for digit and press the adjacent key SET. Your range is now selected and the
indication jumps one step back in the
Menu .
2
nd
Menu level shows the calibration settings named CalModus >. Press key to jump to
the sub-level CalModus > which consists of three sub-levels called: ElyseCal > , SubCal
> and AutoCal > . (option only). With the key you can go ahead. With the key you
will release the electrolytic calibration if you start from position ElyseCal > . From