TM 10-4610-310-14
WP 0048 00
CALIBRATION PROCEDURE - continued
Figure 3. Turbidity Meter with Cuvet.
9. A blinking Sampling in Progress "SIP" message indicates that the meter is performing the measurement.
SIP
CL
10. After approximately 50 seconds, the meter will display "10.0".
10.0
CL
11. Insert the cuvet filled with the calibration solution, 10 FTU, HI 93703-10, into the measurement cell and
press CAL.
12. After approximately 50 seconds the LCD will display "- - - -". Press the CAL key again.
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13. The meter is calibrated and ready for use.
ACCURATE CALIBRATION
The following instructions will ensure accurate calibration:
1. All glassware that contacts with the standards should be maintained clean. Wash with cleaning solution, HI
937803-50, or equal. Rinse glassware with calibration solution, HI 93703-0, or equal, or turbidity-free water.
2. Rinse the vial twice with 5 milliliter (mL) of the liquid to be tested. This removes the effect of any previous
liquid and any dust or foreign matter that may be present inside.
3. Gently pour the liquid down the side of the vial to reduce air bubbles (no mixing is required when HI 93704-0
and HI 93703-10 AMCO-AEPA-1 standards are used).
