Hach Polymetron 9523 Manuel D'utilisation Simplifié page 17

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Figure 5 Analog output connections
4.3.6 Connect the optional digital communication output
The manufacturer supports Modbus RS485, Modbus RS232, Profibus DPV1 and HART
communication protocols. The optional digital output module is installed in the location indicated by
item 4 in
Figure 4
on page 11. Refer to the instructions supplied with the network module for more
details.
4.4 Plumb the sample and drain lines
After the panel is attached to a wall, connect the sample and drain lines to the fittings on the panel.
Make sure that the tubing meets the
Figure 1
on page 7.
1. Insert the sample tubing into the input quick-connect fitting under the flow chamber
on page 7).
2. Connect a drain line to sample output fitting. Keep the drain line as short as possible to prevent
back-pressure.
Section 5 Analyzer startup
1. Open the degassing valve.
2. Open the sample flow adjustment valve and ensure everything is watertight and there are no
leaks.
3. Close the degassing valve when the measuring cell is free of air.
4. Set the sample flow to the required rate (between 5 and 20 L/h).
5. Pass about 10 liters of sample through the resin to thoroughly rinse it and prepare the analyzer
for measurements.
Section 6 User interface and navigation
6.1 User interface
The keypad has four menu keys and four directional keys as shown in
Specifications
on page 3. Refer to the steps that follow and
(Figure 1
Figure
6.
English 17

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