TM 10-4610-310-14
OPERATOR MAINTENANCE
LIGHTWEIGHT WATER PURIFIER
TURBIDITY METER
CALIBRATION INSTRUCTIONS
INITIAL SETUP
Materials/Parts
Equipment Condition Required
Solution, calibration, (Item 24, WP 0136 00)
Operational
Solution, calibration, (Item 25, WP 0136 00)
Solution, cleaning, (Item 26, WP 0136 00)
Rags, wiping, cotton, (item 21, WP 0136 00)
GENERAL
This work package contains information and instructions for calibration instructions for the Hanna Model HI
93703 portable, microprocessor turbidity meter. See WP 0019 00 for operation instructions.
CALIBRATION PROCEDURE
To the check the date of the last calibration date, hold the DATE/⇒ key down for a few seconds. A more
frequent check of the meter is suggested using the standard calibration solution.
1. Turn the meter on. Press ON/OFF key to ON. Wait for the Liquid Crystal Display (LCD) to show "- - - -". See
Figure 1.
MEASUREMENT
CELL
ON/OFF KEY
CAL KEY
LIQUID
CRYSTAL
DISPLAY
----
DATE ⇒ KEY
READ ⇑ KEY
Figure 1. Turbidity Meter.
2. Press the CAL key once. The "CAL" message will blink on the LCD for about 6 seconds, then the calibration
mode stops.
CAL
3. While the "CAL" message is still blinking, press the CAL key again.
