Arkray AUTION ELEVEN AE-4022, Operating Manual

Page: 39 / 161

Chapter 2 Measurement Operation
AE-4022
2-4
2.2 Measurement precautions
2.2.1 Precautions for operation
 Always use the instrument in the proper operating environment. Before turning ON the instrument, check
that the “1.3.1. Precautions for installation” explained on page 1-11 have been followed.
 In the ambient temperature range of 10 to 30 °C, the temperature correction function operates to give the
most accurate measurement results possible. However, for more precise results, we recommend that
you perform measurement using the optimum operating environmental conditions, an ambient
temperature of between 20 and 25 °C, and a relative humidity between 30 and 60 %.
 If you feel that the system is operating abnormally, or detect abnormal odors or smoke, immediately turn
OFF the power and unplug the power cord. Continuing operation in such conditions may result in fire or
damage to the instrument and consequently lead to personal injury.
 In case of instrument trouble, contact your local distributor for repairs. Unauthorized servicing or
modification can damage the instrument and consequently lead to personal injury.
 Do not place a collection cup or any other vessel containing sample or other liquid on the unit. Sample
or other liquid that gets inside the instrument may cause trouble.
 Any vibration during measurement may cause a malfunction and prevent accurate measurement.
Vibration may also cause test strips to clog inside the instrument.
 Dip test strips in samples for approximately 2 seconds, following the beep sounds emitted by the
instrument. Insufficient dipping of test strips may cause insufficient color change, while dipping too long
may cause reagents to drain out of the test strip, either of which will prevent correct measurement.
 When dipping a test strip into sample, dip the whole the test strip pad area at once, but do not dip past
the black mark on the test strip. If the black mark is wet, a correct measurement may not be obtained.
2.2.2 Precautions for handling samples
 TAKE THE UTMOST CARE WHEN HANDLING URINE. This system uses urine as sample and as an
ingredient of Control. Urine may be contaminated by pathogenic microorganisms that can cause
infectious diseases. Improper handling of urine may cause infection to the user or other individuals by
pathogenic microorganisms.
 Use fresh urine, within 2 hours after collection, when measuring samples. If measurement cannot be
done immediately after collection, seal the sample in a vessel and store it at a low temperature. When
using samples that have been stored at low temperatures, allow them come to room temperature before
making measurements. Cover samples until ready to measure to prevent light exposure.
 Stir samples well before measurement, but avoid subjecting them to centrifugation. Centrifugal force may
cause undesirable sedimentation of blood cells and prevent obtaining proper measurements of certain
items that need to be measured.