Error Messages, Problems, Solutions - Merck RQflex 10 Instruction Manual

|
3 0
Trouble-shooting
The following table shows explanations of the error messages and tips on
how to avoid incorrect measurements.
The most commonly encountered problems are caused by:
• strips not being inserted correctly.
• the reaction time of the strip not being right (too long or too short).
• incorrect use of strips (e.g. pH not correctly adjusted, tube for strips
not closed etc.).
Problem Cause
• No display • Batteries not
inserted properly
• Batteries are drained
• Display LO • Concentration is lower
than the measurement
range of the strips
Problem
• Display HI
• Display - - -
• Display OPT
• Display ERR
Solution
• Check batteries • Display E-1
• Check polarities
• Use new batteries
• Report the result as
lower than the detec-
tion limit of the • Display E-2
respective RQ strip
Cause Solution
• Concentration is higher • Dilute the sample; do
than the measurement not forget to consider
range of the strips the factor for dilution
when reporting the result
• No code programmed • New coding required
• Optics or strip adapter • Clean optics and adapter
is dirty and switch the RQflex 10
on and then off again
• Recalibrate, if necessary
• Optical error • Clean optics and adapter;
• Strip adapter is recalibrate instrument;
assembled incorrectly if necessary, call Customer
Service; check adapter
• Surrounding is too • Repeat measurement
bright. in a darker place;
• Strip adapter is if necessary, close the lid
assembled incorrectly of the RQflex 10 before
switching on
• Measurement result is • Repeat measurement
incorrect