Hanna Instruments HI 95711 - Manual (Page 9)

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This prompt appears for 1 second each time the instrument is
turned on.
The parameter code “701” or “711” indicates that the meter is in
a ready state and zeroing can be performed.
Sampling in Progress. This flashing prompt appears each time the
meter is performing a measurement.
This indicates that the meter is in a zeroed state and measurement
can be performed.
Light over range: the cuvet is not inserted correctly and an excess
ambient light is reaching the detector. If the cover is properly
installed, then contact your dealer or the nearest Hanna Customer
Service Center.
The blinking "BAT" indicates that the battery voltage is getting low
and the battery needs to be replaced.
This indicates that the battery is dead and must be replaced. Once
this indication is displayed, the meter will lock up. Change the
battery and restart.
“Configuration”: this indicates that the meter has lost its
configuration. Contact your dealer or the nearest Hanna Customer
Service Center.
CALIBRATION MODE MESSAGES
The date of the last calibration appears on the LCD each time the
calibration mode
is entered. If calibration is performed for the first
time, “F.CAL” appears.
This indicates that the factory calibration is selected.
GUIDE TO DISPLAY CODES
16
• Select the parameter code for free chlorine “701”
ot total chlorine “711” by holding ZERO/SET
(see pag. 13).
• Place the CAL CHECK™ Standard Cuvet A into
the holder and ensure that the notch on the cap is
positioned securely into the groove.
• Press ZERO and “SIP” will blink on the display.
• After a few seconds the display will show
“-0.0-”. The meter is now zeroed and ready for
validation.
• Remove the cuvet.
• Place the specific CAL CHECK™ Standard Cuvet B
into the holder, for:
Free Chlorine: Total Chlorine:
B, HI 95701-11 B, HI 95711-11
Ensure that the notch on the cap is positioned
securely into the groove.
• Press CAL CHECK and “SIP” will blink during
measurement.
Use the validation procedure to ensure that the instrument is properly calibrated.
Warning: do not validate or calibrate the instrument with standard solutions other than the Hanna
CAL CHECK™ Standards, otherwise erroneous results will be obtained.
or
VALIDATION PROCEDURE
Temperature correction for Validation: corrected value = read value Ч [1 + 0.002 Ч (20 − T(°C))]
corrected value = read value Ч [1 + 0.001 Ч (68 − T(°F))]
• Wait for a few seconds and the display will show the validation standard value.
The reading should be within specifications as reported on the CAL CHECK™ Standard Certificate.
If the value is found out of specifications, please check that the cuvets are free of fingerprints, oil or
dirt and repeat validation. If results are still found out of specifications then recalibrate the
instrument.