Hach-Lange POLYMETRON 9523 Basic User Manual: Installation

Principle of operation (pH calculation)

The 9523 analyzer adheres to the recommendations contained in the guidelines for feedwaters,

boiler water and steam quality for power and industrial plants.

The pH calculations can only be applied under the following strict chemical conditions:

• The sample must only contain an alkaline agent (ammonia, sodium hydroxide or ethanolamine)

• Any impurity is principally NaCl (sodium chloride)

• The concentration of impurity must be negligible in comparison to the alkaline agent

Installation

C A U T I O N

Multiple hazards. Only qualified personnel must conduct the tasks described in this section of the

document.

Analyzer mounting

Attach the analyzer to a stable, vertical surface. Refer to the guidelines that follow and Figure 2.

Note: If an external controller is used, refer to the controller documentation for mounting instructions.

• Put the instrument in a location that has access for operation, service and calibration.

• Make sure that there is good view of the display and controls.

• Keep the instrument away from a heat source.

• Keep the instrument away from vibrations.

• Keep the sample tubing as short as possible to minimize the response time.

• Make sure that there is no air in the sample supply line.

8 English

Figure 2 Dimensions

Resin cartridge installation

Refer to the steps that follow and Figure 3 to install the resin cartridge.

1. Insert the steel tube into the quick lock connector.

2. Push the steel tube as far as possible into the measuring cell.

3. Take the resin cartridge and turn it upside down 2 or 3 times until the resin comes away from the

sides of the cartridge and settles at the bottom, at the opposite end to the marker line.

4. Unscrew the cap off the top of the cartridge, by the marker line. Discard this cap and the flat black

sealing cap following the safety and disposal information for used cartridges.

5. Place the end of the steel tube into the center of the cartridge.

6. Slowly raise the cartridge to the measuring cell and screw into place to obtain an airtight and

watertight fitting.

English

9

Analog output connections

W A R N I N G

Potential Electrocution Hazard. Always disconnect power to the instrument when making electrical

connections.

W A R N I N G

Potential electrocution hazard. In order to maintain the NEMA/IP environmental ratings of the

enclosure, use only conduit fittings and cable glands rated for at least NEMA 4X/IP66 to route cables in

to the instrument.

Two isolated analog outputs (1 and 2) are provided (Figure 5). Such outputs are commonly used for

analog signaling or to control other external devices.

Make wiring connections to the controller as shown in Figure 5 and Table 3.

Note: Figure 5 shows the back of the controller cover and not the inside of the main controller compartment.

Table 3 Output connections

Recorder wires Circuit board position

Output 2– 4

Output 2+ 3

Output 1– 2

Output 1+ 1

1. Open the controller cover.

2. Feed the wires through the strain relief.

3. Adjust the wire as necessary and tighten the strain relief.

4. Make connections with twisted-pair shielded wire and connect the shield at the controlled

component end or at the control loop end.

• Do not connect the shield at both ends of the cable.

• Use of non-shielded cable may result in radio frequency emission or susceptibility levels higher

than allowed.

• Maximum loop resistance is 500 ohm.

5. Close the controller cover and tighten the cover screws.

6. Configure outputs in the controller.

16

English