Thermo Scientific AQUAfast AQ3700, Руководство пользователя

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37
Thermo Scientific Orion AQUAfast AQ3700 Colorimeter User Guide
10. Press TEST key.
Wait for a reaction period of 5 minutes .
After the reaction period is finished the measurement
starts automatically.
11. Remove the vial from the sample chamber
12. Add the contents of one Monochlor FRGT
Powder Pack
straight from the foil into the
ammonia vial.
13. Close the vial tightly with the cap and swirl several
times to mix the contents (approx. 20 seconds).
14. Place the ammonia vial in the sample chamber
making sure that the marks are aligned.
15. Press
TEST
key.
Wait for a
reaction period of 5 minutes
.
After the reaction period is finished the measurement
starts automatically.
The result is shown in the display in mg/l
Monochloramine and mg/l free Ammonia.
The reading of Monochloramine is shown as:
mg/l Cl
2
mg/l NH
2
Cl
mg/l N
The reading of Ammonia is shown as N.
Conversion:
mg/l NH
4
= mg/l N . 1.29
mg/l NH
3
= mg/l N . 1.22
Notes:
1. Hold the bottle vertically and squeeze slowly.
2. To determine the ammonia concentration the difference between the chloramine (T1)
and the sum of chloramine and ammonia (T2) is calculated. If T2 exceeds the range
limit the following message is displayed:
NH
2
CL + NH
4
> 0.5 mg/l
3. See also page 34.
Zero accepted
prepare T2
press TEST
Countdown
5:00
Zero accepted
prepare T1
press TEST
Countdown
5:00
*,** mg/l Cl2
*,** mg/l NH2Cl
*,** mg/l N [NH2Cl]
*,** mg/l N [NH4]