TM 10-6630-246-12&P
TM 09241 B-12&P
NOTE
Immerse probe into solutions at an angle to avoid trapping air bubbles under tip which would affect readings. Cone
assembly must be completely immersed.
(4) Completely immerse probe (5) tip and cone assembly (6) into beaker (3) solution. Tip beaker if necessary.
(5) With probe (5) tip and cone assembly (6) immersed, press the AUTO ZERO keypad (7) and hold until display
indicates -1 then release and note display value. Repeat until lowest value is reached. Display must indicate less than 1.
(6) Remove the probe (5) and lightly tap excess solution from tip. Let dry completely.
NOTE
Standard solution can be reused if not contaminated.
(7) Discard or return standard solution to original container.
(8) Rinse beaker (3) with demineralized or distilled water and dry thoroughly.
(9) Empty bottle of 60 NTU standard solution (8) into beaker (3).
NOTE
Immerse probe into solutions at an angle to avoid trapping air bubbles under tip which would affect readings.
Cone assembly must be completely immersed.
(10)Completely immerse probe (5) tip and cone assembly (6) into beaker (3) solution. Tip beaker if necessary.
(11)Meter (2) should stabilize at a reading of 60i3 NTU’s, if not, remove plug (9) and adjust potentiometer until 60 is
displayed.
(12)Remove the probe (5) and rinse with demineralized or distilled water. Lightly tap excess water from tip and let dry
completely.
NOTE
Standard solution can be reused if not contaminated.
(13)Discard or return standard solution to original container. Rinse beaker (3) with demineralized or distilled water and
dry thoroughly.
(14)Install plug (9) if removed.
NOTE
Calibration information stored in meter will be lost if power is disconnected or if ONOFF switch, located on top
of meter, is turned OFF.
(15)Press ON-OFF keypad (1) to turn off the meter.
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