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Introduction
These operating instructions describe the installation, operation and programming of
the combined process photometer
and titrator Testomat
®
2000 TH/Cl.
We recommend that, whilst familiarising yourself with the operation of the unit aided by this manual, you have
immediate access to the unit in order to perform the functions and combinations as described. As certain functions are
interrelated, it is advisable to follow the instructions in the given order.
Should problems or questions arise which are not described in this manual and/or cannot be solved, our customer
service is always at your disposal.
Try to identify the problem as accurately as possible and record the conditions under which it has occurred. This will
enable us to offer you swift effective assistance.
Symbols and abbreviations used in these instructions:
L
Note for the user
"STANDBY" = STANDBY lamp is “ON”
Important to observe / warning note
"M" = Press menu key M
T
Tip: Helpful hint
º
SERVICE
º
MANUAL OPERATION
º
FLUSH
= Sequence in a menu selection
Short description
The Testomat
®
2000 THCl is an online monitor for monitoring the concentration of total chlorine in the measuring range
0 - 2.5
mg/l (ppm) using the colorimetric analysis principle and determines the water hardness through titration.
The analysis of total chlorine is implemented by adding three reagents, after a reaction time of approx. 1 minute
(measuring time without flush time) the analysis result is shown.
Areas of use are, e.g. the protection of reverse osmosis membranes from blocking due to hardness and from
destruction due to a high content of chlorine. Two independent programmable limit value contacts are available for
monitoring. The analysis result can be recorded using the optional printer board (interface SK910, item no. 270305) and
a dotted or continuous line printer (0/4-20mA).
Parameter / Measuring range
water hardness
TH 2025
total chlorine
Unit
°dH
(Resolution)
0.25 - 2.50
(0.05)
-
°f
(Resolution)
0.45 - 4.48
(0.1)
-
ppm CaCO
3
(Resolution)
4.47 - 44.7
(0.9)
-
mmol/l
(Resolution)
0.04 - 0.45
(0.01)
-
mg/l (ppm)
-
0.0 - 2.5
(0.1)
L
A consistently reliable result can be guaranteed by the Testomat
®
2000 units only with the use of
original HEYL Testomat
®
2000 indicators and reagents!
Failure or problems which are caused by the use
of different indicators are not covered by the warranty or refund services.
Larger quantities of heavy-metal ions in the softened water can affect the colour reaction, especially iron above
0.5 mg/l, copper above 0.1 mg/l and aluminium above 0.1 mg/l (brownish-red colour indication).The measuring
is possible in a range of pH 4 - 10.5.
At a concentration of more than 100 mg/l of CO
2
(carbon dioxide) in the water the analysis can be affected.
Fault influences:
Concentration values of these ingredients can be determined safely and simply with our TESTOVAL
®
colorimetric test
comparators.
