When To Calibrate - Aqualytic AL 255T IR Instrucciones

Calibration Mode
GB
20
StAn
Read
01:00
20
200
StAn
Read
01:00
200
800
StAn
Read
01:00
800
USEr
Stor
!
Stng
StEd

When to calibrate

The turbidimeter was calibrated at the factory with Formazin Primary Standard and does not
require user calibration before use.
As the electronic and optical design of this instrument provides long-term stability the need
for frequent calibration is minimised. Perform calibration with T-CAL every 3 months or if
required, more often.
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After the measurement 20/StAn appears alternating in the display.
Invert the 20 NTU standard and place it in the sample chamber, mak-
ing sure that the marks are aligned. Place the cover on the instru-
ment.
Press the [READ] key.
The countdown starts.
After the countdown is finished the reading starts automatically.
The display flashes for approx. 8 seconds.
After the measurement 200/StAn appears alternating in the display.
Invert the 200 NTU standard and place it in the sample chamber,
making sure that the marks are aligned. Place the cover on the
instrument.
Press the [READ] key.
The countdown starts.
After the countdown is finished the reading starts automatically.
The display flashes for approx. 8 seconds.
After the measurement 800/StAn appears alternating in the display.
Invert the 800 NTU standard and place it in the sample chamber,
making sure that the marks are aligned. Place the cover on the
instrument.
Press the [READ] key.
The countdown starts.
After the countdown is finished the reading starts automatically.
The display flashes for approx. 8 seconds.
After the measurement "USEr" alternating with Stor is shown in the
display.
Press [ ! ] key to store the calibration.
First appears Stng (Storing), followed by StEd (Stored).
AL 255T IR USB_3 02/2019