MACHEREY-NAGEL URYXXON Relax Manual De Instrucciones página 68

2.6 System description
2.6.1 Measuring principle
The test strip moves below a fixed measuring head on a sled with an embedded reference pad.
The reflectometric analysis of the test strip and the reference field take place during withdrawal
and release of the sled.
The strip is illuminated with an LED and a detector registers the intensity of light reflected by
the test strip at three different wavelengths. Using an internal calibration, the intensity of the
reflected light is correlated to the concentration of the analyte. Whenever samples are strongly
alkaline, a density correction is automatically conducted.
2.6.2 Functional principle URYXXON
A measurement is started by placing a strip on the holder. If the Autostart-feature is turned
off, the measurement is started by pressing the start panel
shown on the display, printed out and released via the interfaces after the measurement has
been completed. After three minutes the instrument will go to stand-by. Touching the screen
will reactivate the instrument.
All user inputs are performed via the touch-screen (Chapter 3.14 "Use of the instrument").
2.7 Safety warnings
BE SURE TO READ THE FOLLOWING SAFETY INSTRUCTIONS CAREFULLY BEFORE USING
THE DEVICE.
Failure to follow these instructions may result in serious injury to the operator, malfunction or
damage of the device.
Keep this manual in a safe place for future reference.
Follow the safety notes and instructions in the operating manual and observe the stickers and
notices on the device.
Do not work on internal parts of the unit. Non-compliance will invalidate any warranty claim.
The following safety warnings are used throughout the manual:
Manual URYXXON
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Pic 5: Measuring Principle
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Relax EN, V 6.01 / 03.22
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in the display. The result is