ProMinent DULCOTEST DT4B User manual

DULCOTEST® DT4B
Photometer
Operating manual
A0946
EN
Target group: instructed personnelPart number: 985614 BA DT 052 07/16 EN
Please carefully read these operating instructions before use. · Do not discard.
The operator shall be liable for any damage caused by installation or operating errors.
The latest version of the operating instructions are available on our homepage.

General non-discriminatory approach In order to make it easier to read, this
document uses the male form in
grammatical structures but with an
implied neutral sense. It is aimed
equally at both men and women. We
kindly ask female readers for their
understanding in this simplification of
the text.
Supplementary information
Please read the supplementary information in its entirety.
Information
This provides important information relating to the correct operation of the
unit or is intended to make your work easier.
Warning information
Warning information include detailed descriptions of the hazardous situation.
The following symbols are used to highlight instructions, links, lists, results and
other elements in this document:
More symbols
Symbol Description
Action, step by step.
⇨Outcome of an action.
Links to elements or sections of these instructions or other
applicable documents.
nList without set order.
Supplemental instructions
2

Symbol Description
[Button] Display element (e.g. indicators).
Operating element (e.g. button, switch).
‘Display
/GUI’
Screen elements (e.g. buttons, assignment of function keys).
CODE Presentation of software elements and/or texts.
Supplemental instructions
3

Table of contents
1 General Information................................................................................... 5
1.1 Scope of delivery............................................................................... 6
1.2 Instructions for use............................................................................ 8
1.3 Operations carried out on the device............................................... 11
2 DT4B commissioning............................................................................... 12
2.1 Commissioning................................................................................ 12
3 Operating Menu....................................................................................... 15
3.1 Operating Menu Options.................................................................. 15
3.2 Operating instructions...................................................................... 16
3.3 Error messages............................................................................... 16
4 Analysis methods..................................................................................... 17
4.1 Procedural instructions when using liquid reagents......................... 17
4.2 Quantitative determination using liquid reagents............................. 19
4.3 Procedure instructions when using tablets...................................... 23
4.4 Quantitative determination using tablets.......................................... 24
5 Calibration ............................................................................................... 31
6 Technical data......................................................................................... 34
7 Consumables and Spare Parts................................................................ 36
8 Standards Complied with and Declaration of Conformity........................ 37
9 Index........................................................................................................ 38
Table of contents
4

1 General Information
WARNING!
Danger from hazardous sub‐
stances!
Possible consequence: Fatal or
very serious injuries.
Please ensure when handling
hazardous substances that you
have read the latest safety data
sheets provided by the manufac‐
ture of the hazardous substance.
The actions required are
described in the safety data sheet.
Check the safety data sheet regu‐
larly and replace, if necessary, as
the hazard potential of a sub‐
stance can be re-evaluated at any
time based on new findings.
The system operator is respon‐
sible for ensuring that these safety
data sheets are available and that
they are kept up to date, as well
as for producing an associated
hazard assessment for the work‐
stations affected.
General Information
5

1.1 Scope of delivery
The following components are included as standard:
Description Quan‐
tity
nCase, blue with blue fasteners
– with ProMinent sticker, Dulcotest DT4B photometer, code
1039318
– and danger symbol
1
Foam insert for the case 1
Cover foam for the case 1
nPhotometer DT4B
– chlorine, chlorine dioxide, chlorite
– Battery compartment lid with O-ring
1
Screwdriver with clip, red 1
Countersunk screws 4
Batteries, 1.5 V alkali-manganese, type AA 4
Round cuvettes, 10 ml, d = 24 mm, h = 48 mm 3
Lid for round cuvette, 24 mm, grey 3
Sealing rings, grey 3
Syringe, 10 ml 1
Plastic mixing rod, 10 cm long 1
Cleaning brush 1
Measurement beaker, plastic, 100 ml 1
Disposable cuvette, 13.5 mm layer depth
Operating instructions for Dulcotest DT4B 1
DPD-1 tablets 100
DPD-3 tablets 100
General Information
6

Description Quan‐
tity
Chlorine dioxide No. 1 tablets 250
Chlorine dioxide No. 2 tablets 250
Glycine tablets 20
General Information
7

1.2 Instructions for use
– Request the safety data sheets.
– Reagents are intended for chemical analysis and access to them by
unauthorised persons must not be permitted.
– You must dispose of reagent solutions properly.
– Observe the application possibilities, analysis instruction and matrix
effects of the methods.
1. You must thoroughly clean the cuvettes, lids and stirring rod after each
analysis to avoid carry-over errors.
Even slight reagent residue can lead to incorrect measurement results.
For cleaning use the supplied brush.
If the fully reacted water sample is left for any length of time it may pro‐
duce stubborn coloured deposits, which you can remove using dilute (= 4
%) hydrochloric acid.
2. The outer walls of the cuvettes must be clean and dry before the analysis
is carried out. Fingerprints or water droplets on the light-entry surfaces of
the cuvette will result in faulty measurements. The cuvette should there‐
fore be wiped clean with a soft paper tissue (paper handkerchief) before
carrying out the measurement.
3. The zero correction and the analysis must both be carried out using the
same cuvette, as the cuvettes may have slightly varying tolerances.
General Information
8

A0937
Fig. 1: Cuvette positioning (Ø 24 mm):
I. Seal II. Marking with the white triangle
4. For the zero correction and test, the cuvette must be positioned in the
sample chamber in such a way that the marking with the white triangle (II.)
points towards the housing marking.
5. You must carry out the zero correction and test with the cuvette lid closed.
You must provide the cuvette lid with a sealing ring (I.) to prevent the
entrance of light into the sample chamber.
6. Formation of bubbles on the inside walls of the cuvette will result in faulty
measurements. Should this happen, seal the cuvette with the cuvette lid
and tip it back and forth to dissolve/remove the bubbles before carrying
out the test.
7. It is important to prevent water getting into the sample chamber because
this leads to incorrect measurement results.
General Information
9

8. Dirt in the transparent sample chamber leads to incorrect measurement
results. The light entry surfaces should be checked at regular intervals and
cleaned as necessary.
Standard spectacle cleaning cloths and cotton buds are suitable for
cleaning.
9. Pronounced differences in temperature between the photometer and the
surroundings can lead to incorrect measurements, e.g. due to the forma‐
tion of condensation in the sample chamber and on the cuvette.
10. Protect the device from direct sunlight.
A0938
Fig. 2: Correct filling of the cuvette: Left = correct / right = incorrect
11. Fill the cuvette as shown in Fig. 2.
12. Insert the reagent tablets directly from the blister pack into the water
sample, without touching them with your fingers.
13. After use immediately close the dropping bottles containing the liquid
reagents by closing them with the screw caps of the same colour.
14. You must observe the sequence for the addition of reagents without fail.
General Information
10