User Guide

CONDUCTIVITY PROBE MAINTENANCE

Preparation

Make sure that the protective sleeve is on the probe shaft and is intact.

Storage

Conductivity probes should be stored dry. If they are not to be used for a

while, clean and dry them thoroughly before storing them in a dry place.

Periodic maintenance

Inspect the probe and the cable. The cable used for the connection to the

controller must be intact. There must be no points of broken insulation on

the cable or cracks on the probe sleeve. If any cracks are present, replace

the probe and cable.

The connector must be clean and dry.

Cleaning procedure

Soak the probe in HI 7061 General Cleaning Solution for 1 hour.

If the probe has been left in highly concentrated fertilizer solution and

does not seem to have become clean, repeat the cleaning procedure. The

pins can also be cleaned with a cloth. The cloth has to be made of a soft

and nonabrasive material and does not scratch the pins.

Note: After performing a the cleaning procedure, rinse the probe thor-

oughly with distilled or tap water. Dry the probe and recalibrate

the controller.

Troubleshooting

• If the controller does not respond properly or constantly reads zero or

a value close to it:

- Check the probe and cable for cracks and replace it if needed.

• If the controller display shows 1. :

- The cable may be shorted or the probe broken. Replace it if needed.

• If the response seems sluggish:

- Follow the above cleaning procedure.

• If there are anomalies such as fluctuating numbers:

- Ensure that the probe has been properly mounted and constantly lies

in a well filled with solution.