MODEL TCL

S1 Zero Cal Sensor zero failed

Press Exit

SECTION 9

CALIBRATION

If the zero current is much larger than expected, the zero calibration failure screen appears. The analyzer will not update the zero current. For troubleshooting assistance, see Section 11.5.

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

9.3.3 Procedure — Calibrating the sensor

1.If the sensor was just zeroed, place the sensor back in the flow cell. Confirm that excess sample is flowing down the inside tube of the overflow sampler. Also, verify that reagent is being delivered to the sample and that the air pump is working.

2.Adjust the chlorine concentration until it is near the upper end of the control range. Wait until the analyzer reading is stable before starting the calibration. When the TCL is first started up or when a new sensor is put in service, allow at least 30 minutes for the reading to stabilize.

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 2 appears only if you have a dual input 1056 analyzer.

S1 Calibration

Total Chlorine

Temperature

S1 Calibration ZeroZeroCalCal

In Process Cal

5.Choose Total Chlorine.

6.Choose In Process Cal

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Emerson TCL instruction manual S1 Zero Cal Sensor zero failed Press Exit, Calibrate?, Sensor Output

TCL specifications

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