Campbell CS526 Manual descargar pdf (Pagina 15)

CS526 ISFET pH Probe

11. Maintenance

Campbell Scientific recommends that the CS526 be cleaned and calibrated

periodically to insure accurate readings.

The CS526 has no user-serviceable parts.

If the CS526 is not operating properly and requires return to Campbell

Scientific, first obtain an RMA (returned material authorization) and fill out

the Declaration of Hazardous Material and Decontamination form. This

information is available at http://www.campbellsci.com/repair

Cable can be damaged by abrasion, rodents, sharp objects, twisting, crimping

or crushing and pulling. Take care during installation and use to avoid cable

damage.

Contamination on the diaphragm may block the built-in reference electrode, so

there will be no electrical contact between the electrode and the ISFET chip.

This condition will cause the probe to not function. To prevent this, regular

cleaning is recommended. Frequency of cleaning depends on the quality of the

water. The best cleaning method is the “soapy water” method:

1. Place the tip of the probe in soapy water that is 50° to 60°C and soak for

about 5 minutes (see Figure 11-1).

2. Rinse thoroughly with deionized water.

3. If necessary, lightly scrub the tip of the probe with a toothbrush to remove

debris (see following caution).

4. Place the probe in saturated KC1 solution (CSI pn 16349) at about 20°C.

Keep probe in solution for about 30 minutes.

To prevent scratching the chip, a toothbrush should only

be used after soaking in soapy water. Most scratches

occur when hard particles are rubbed with a toothbrush on

the chip surface. This can cause irreversible damage to

the probe.

CAUTION

5. Rinse the probe.

6. Calibrate the probe (see Appendix A).

1 2 ... 10 11 12 13 14 15 16 17 18 19 20

Sin comentarios

Campbell CS526 Manual Pagina 15