NIEUWKOOP RQflex plus 10 User manual

RQflex plus 10
Manual English

Contents
1Introduction 3
2Description of the instrument 5
display, keys 6
technical data 8
3Setting up the instrument 9
insertion of batteries 10
setting the time and date 11
4Coding 13
reasons for coding 14
coding procedure 14
5Measurement 15
method procedures A, B, C, D, E 16
6Handling measurement results 23
storing measurement results 24
displaying stored data 25
data transfer to a PC 25
deleting data 26
7Maintenance of the instrument 27
handling 28
cleaning the adapters 28
recalibration 29
8 Trouble-shooting 31
error messages, problems, solutions 32
9Service/Warranty 33
service department, warranty conditions 34

Introduction
1Introduction

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Introduction
Please read the RQflex plus 10 instruction manual carefully before operating.
The manual is well structured and illustrated. We recommend that you read
the manual in conjunction with using your instrument.
For the analysis procedure please follow the detailed description in the
package insert of the respective Reflectoquant® tests.

Description of the instrument
2Description

Description of the instrument
Your RQflex plus 10 is a versatile, precise instrument. It is part of the
Reflectoquant® analysis system with the components:
• Instrument RQflex plus 10
• Reflectoquant® strips
• Reflectoquant® plus cell test kits
• Test- and batch-specific bar-code strip
According to the principle of reflectometry (remission photometry), diffuse
reflected light from the strip or after transmission through a cell is measured.
Just as in classical photometry, the difference in intensity of emitted and
reflected light allows a quantitative determination of the concentration of
specific analytes.
Display and operation keys (buttons)
Operation keys (buttons) 1
Display for the display of messages and information 2
Interface, connection to PC 3
For RQdata only (see p. 25)
Do not use to connect an external power supply!
Lid 4
Method register 5
Up to five analytical methods, e.g. nitrate, pH value, can be stored
s i m u l t a n e o u s l y, regardless of whether a strip or a cell test is used.
Methods are loaded by means of the bar-code strip.
Bar-code scanner 6
All information necessary to run the instrument is communicated via the
bar-code strip. The bar code contains information for wavelength correction
and for the batch-specific calibration curve.
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2
5
6
1
3
4

After switching on the RQflex plus 10 a self-diagnosis is performed for
about 1 second. Ensure that all functions, especially the multifunctional
digit display, are shown correctly.
Time 1
LOW BATTERY change of batteries 2
Date 3
Symbols for measurement procedure 4
Methods 5
Multifunctional display 6
AM 88:88 88:88.
8.8.8
Instrument, tests, and bar-code strips are tuned to each other. Ensure that the
reference number (code) for all three components matches.
Technical data
D i m e n s i o n s : 19 x 8 x 2 cm
We i g h t : 275 g
M e m o r y : 5 methods, 50 measur ements results
External output: Ye s
Light source: 4 LEDs (5 70/657 ± 10 nm), double optics
Power source: 4 AAA batteries (> 1000 measure ments)
D i s p l a y : L C D
System diagnosis: Ye s
Measurement range: 4 - 90% rel. remission
Reflection area: 4 x 6 mm
R e s o l u t i o n : 0 .1% rel. remission
Photom. accuracy: 0 .5% rel. remission (measurement to measurement, instrument to instrument)
Operating temperature: 5 - 40°C for ideal measurements
Operating humidity: Below 90% for ideal measurements
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CODE
M E M
S E C
1
2
6
1 3
4
5
2 3 4 5
F:50
413 CODE
1 2 3 4 5

Setting up the instrument
3Operation

Setting up the instrument
Insert the four supplied batteries into the instrument (AAA).
Insertion of batteries
When?
Before first use or when the LOW BATTERY sign
is shown in the display.
How?
1 . Remove the lid of the battery compartment on the back of the instrument
by pressing carefully in the indicated direction.
2 . Insert the batteries into the compartment, heeding the + and – pole signs.
3 . Close the battery compartment.
Important
When the LOW BATTERY sign first appears, approximately 20
measurements can still be performed. Afterwards the instrument
cannot be switched on.
After screen shutdown, data will be safe for at least two minutes.
To avoid losing stored data, replace batteries immediately.
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