Emerson PN 51-FCL-1056 instruction manual Calibrate?, Sensor Output, PFree Chlorine

MODEL FCL-1056	SECTION 6.0
	CALIBRATION

6.3.3 Procedure-Calibrating the Sensor

1.Place the chlorine sensor in the chlorine flow cell. If continuous (live) pH correction is being used, calibrate the pH sensor (section 6.4) and place it in the pH flow cell. If manual pH correction is being used, measure the pH of the sample and enter the value. See section 5.5. Adjust the sample flow until water overflows the cen- ter tube of the constant head flow controller.

2.Adjust the chlorine concentration until it is near the upper end of the operating range. Wait until the analzyer reading is stable before starting the calibration.

Calibrate?

Sensor 1

Sensor 2

Output 1

Output 2

3.Press MENU. The main menu screen appears. The cursor will be on Calibrate. Press ENTER.

4.Choose the sensor you wish to calibrate. Sensor 1 is the chlorine sensor. Sensor 2 (if present) is the pH sensor.

S1 Calibration

pFree Chlorine

Temperature

S1 Calibration ZeroZeroCalCal

In Process Cal

5.Choose Free Chlorine.

6.Choose In Process Cal

S1 Enter Value

1 0.00 ppm

S1 InProcess Cal Calibration Error

Press Exit

7.Follow the screen prompts: Once the reading is stable, press ENTER. Take the sample and press ENTER. At this point, the analyzer will store the present sensor current and temperature and use those values in the calibration.

Determine the free chlorine concentration in the sample and enter the value in the screen shown at left. See Section 6.3.1 for sampling and testing precautions.

8.If the calibration is successful, the live reading will change to the value entered in step 7 and the display will return to the screen in step 6.

If the sensitivity is too far outside the range of expected values, the calibration error screen shown at left will appear. The analyzer will not update the calibration. For troubleshooting assistance, see Section 9.5.

9. To return to the main display, press MENU then EXIT.

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