Operation – KROHNE OPTISENS OAS 2000 EN User Manual

Page 35

OPERATION

OPTISENS OAS 2000

www.krohne.com

07/2010 - MA OAS 2000 R02 en

Running a zero calibration

• Remove the sensor from the process and clean the sensor head.
• Dip the sensor in a bucket of clean water.
• Select the sensor to be calibrated in the menu by using ↑ or ↓.
• Press ^ for approximately 5 seconds to enter the sensor menu.
• Select Calibrate > Take sample

Calibrate > Take sample

Calibrate > Take sample and then press ^.

• Select Zero

Zero

Zero by using ↑ or ↓ and then press ^.

• To acknowledge that you really want to change the zero calibration, select Yes

Yes

Yes and then press

The converter will ask you to put the sensor in clean water.

• Submerge the sensor head into the clean water and cover it from direct sunlight.
• Press ^.
• Wait for the zero calibration to finish. It will take approximately 30 seconds before the unit

returns to the menu.

5.3.7 Calibration with samples

Calibration with sample in a bucket

• Fill a bucket with a sample of the liquid you intend to measure.
• Submerge the sensor into the liquid.
• Select the sensor to be calibrated in the menu by using ↑ or ↓.
• Press ^ for approximately five seconds to enter the sensor menu.
• Select Calibrate > Take sample

Calibrate > Take sample

Calibrate > Take sample and then #1

#1 using ↑ and ↓.

• Press ^ and stir the sample in the bucket until the calibration is finished. It will take

approximately 30 seconds.

• Take the bucket to the lab for analysis. Note the concentration of the sample determined at

the lab.

• Enter sample #1 concentration by selecting Calibrate > Sample #1

Calibrate > Sample #1

Calibrate > Sample #1 in the calibration menu.

• Press ^.
• Use ↑ and ↓ to change the values and ^ to go to the next digit. Some special applications may

need additional sample points. Do not enter samples that are identical in concentration or
less than 10% from initial values.

INFORMATION!
Detailed procedures for navigating the converter software can be found in the converter manual.

CAUTION!
Even though the sensors have daylight-filters, they are sensitive to the infrared parts of the
sunlight. Always cover the sensor and the bucket before calibration.

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