7.Maintenance

All OMEGA equipments, are shipped from factory tested and calibrated. When under operation, the Conductivity Cell must be maintained periodically (the frequency will depend on the process), which would be basically cleaning, or if necessary, a new calibration.

Cleaning

Dip the electrodes in cleaning solution for 40 seconds, then wash throughly with deionized water to avoid standard contamination, when it is time to perform a calibration.

Calibration

Equipments with range of 0 to 200µS or higher.

1.Dip cell 3 or 4 times in standard compatible with the equipment range. Wait 1 minute before you can adjust the A.T.C. (Automatic Temperature Compensation), If necessary, move it vertically (up

and down) in order to eliminate any bubbles.

2.Proceed with the constant adjustment.

3.Repeat the operation "1" two or three times in order to confirm the value.

Calibration for Low Conductivity Reading(Ultra Pure Water)

Range 0.01µS thru 2µS

1. Assemble the Transfluency Cell and wash it well.

PVC TRANSFLUENCY

Hose Connection

 

1” Cap

1’’ Nipple

1’’ Nipple

1’’ Elbow

Reducer 1’’

3/4”

Conductivity Cell

2. Using a 500 mL beaker, place approximately 400 mL of deionized or distilled water. Using a Conductivity Meter, adjust the conductivity value to approximately 50% of range value, "contaminating" with high conductivity water (example: tap water).

3.Fill the transfluency with 146.9 uS/cm standard and return to the beaker many times in order to rinse and eliminate contaminations. Finally leave the transfluency filled with the standard.

4.Verify the standard conductivity value and thru "constant adjustment" reproduce the same read

value at the equipment to be calibrated.

Repeat this operation many times until you can reproduce at least three times the calibrated value.

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Omega CDE-440 manual Maintenance, Cleaning, Calibration for Low Conductivity ReadingUltra Pure Water