Turner AquaFlash, Руководство пользователя

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Aqua Flash U
ser’s Manual
8
- If the battery power is < 10%, the following message will display
“
Battery
Low Pwr! Replace Battery!
” you will not be able to make any
measurements until batteries are replaced.
2.3 Calibration Check
The
Aqua Flash is factory calibrated and should remain calibrated for many years.
Calibration can be checked using an Adjustable Solid Secondary Standard (SSS). To check
instrument calibration using a SSS:
1 Press the ON/OFF button to turn the Aqua Flash on and wait until the warm up has
completed
2 Press the CAL VAL button to see what the calibration value is set to
3 Obtain an Adjustable Solid Secondary Standard (SSS) and loosen the small black
locking hex screw located on the back of the SSS.
4 Holding the SSS by the tab, insert it with the tab at the back of the sample
compartment and close the sample compartment lid
NOTE: The AquaFlash should be on a flat surface when reading the
Adjustable Solid Secondary Standard (SSS).
5 Press the READ button
a. If the CHL value displayed is lower than the calibration value determined in step
2, adjust the SSS to give you a larger response by rotating the silver hex screw
located at the top of the SSS counterclockwise and re-read the SSS.
b. If the CHL value displayed is higher than the calibration value determined in step
2, adjust the SSS to give a smaller response by rotating the silver hex screw
located at the top of the SSS clockwise and re-read the SSS.
6 Continue adjusting and reading the SSS until the CHL value displayed matches the
calibration value +/-5% determined in step 2.
7 When finished, tighten the locking screw on the back by turning clockwise to lock the
SSS
’s response.
8 Insert the SSS into the instrument.
9 Press the CHK STD button.
a. If the setting is valid, the Aqua Flash will display
“Cal. Check Passed”.
b.
If the Aqua Flash dis
plays “Cal. Check Failed”, repeat steps 3-9.
The SSS can now be used to periodically check for instrument drift and can be stored in the
side pocket of the
Aqua Flash storage pouch.