AMMONIA User Manual
AMMONIA_User 9/09
6
6
To prepare the ammonia standards and calibrate the sensor
1.
Close the system sample inlet valve (item 4, Appendix D)
2.
Rinse the 1000 ml ammonia analyzer calibration column (item 1, Appendix D) with distilled
water
3.
Allow to drain by opening the two valves at the bottom of the column
4.
Close both bottom valves and fill column approximately 250 ml with ammonia free distilled
water.
5.
Add appropriate amount of the stock 100 ppm ammonia solution through the top of the
calibration column based upon the concentration of the standard desired:
•
For 0.1 ppm ammonia add 1 ml
•
For 1.0 ppm ammonia add 10 ml
•
For 10.0 ppm ammonia add 100 ml
6.
Pipette 2 ml of the 10 mol caustic soda solution through the top of the calibration column.
7.
Fill the calibration column to the 1000 ml mark with ammonia free distilled water without
creating air bubbles.
8.
Open the valve immediately below the column (valve 2, Appendix D) and allow standard to
gravity flow past the ammonia sensor. Calibrate the sensor per section 2.2 sensor
calibration.
9.
Place valves back in correct position to measure incoming system sample after calibration(s).
NOTE: Refer to Section 2.2 Sensor Calibration for keypad sequences to perform calibrations.
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