Hanna Instruments HI 95715 - Manual (Page 15)

15
VALIDATION PROCEDURE
• Turn the meter on by pressing ON/OFF.
When the LCD displays “715”, it is ready.
• 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 and place the CAL CHECK
Standard HI 95715-11 Cuvet B into the holder.
Ensure that the notch on the cap is positioned
securely into the groove.
• Press CAL CHECK and “SIP” will blink during
measurement.
• 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 found is 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.
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. For accurate Validation and
Calibration, please perform test at room temperature: 18 to 25°C (64.5 to 77.0°F).