wtw SensoLyt 690 User manual
ba15312e03 07/2015
SensoLyt®690
Operating manual
pH/ORP armature with impedance
converter and temperature sensor
26
SensoLyt®690
Accuracy when going to
press
The use of advanced technology and the high quality standard of our
instruments are the result of continuous development. This may result
in differences between this operating manual and your instrument.
Also, we cannot guarantee that there are absolutely no errors in this
manual. Therefore, we are sure you will understand that we cannot
accept any legal claims resulting from the data, figures or descriptions.
Note
The latest version of the present operating manual can be found on the
Internet under www.WTW.com.
Copyright ©Weilheim 2006, WTW GmbH
Reprinting - even as excerpts - is only allowed with the explicit written
authorization of WTW GmbH, Weilheim.
Printed in Germany.
SensoLyt®690 Contents
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SensoLyt®690 - Contents
1 Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28
1.1 Structure of the SensoLyt®690 pH/ORP armature . . . . 28
1.2 Recommended fields of application . . . . . . . . . . . . . . . . 28
2 Safety . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29
2.1 General information on safety . . . . . . . . . . . . . . . . . . . . 29
2.2 Authorized use . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30
2.3 User qualifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30
2.4 General safety instructions . . . . . . . . . . . . . . . . . . . . . . . 30
3 Commissioning . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32
3.1 Scope of delivery . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32
3.2 Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32
3.3 Commissioning / Getting the instrument ready for measuring
33
4 Measuring / Operation . . . . . . . . . . . . . . . . . . . . . . . . . . 36
4.1 Calibration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 36
4.2 Measuring . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 36
5 Maintenance and changing the electrode . . . . . . . . . . 37
5.1 General maintenance instructions . . . . . . . . . . . . . . . . . 37
5.2 Replacing the combination electrode . . . . . . . . . . . . . . . 37
5.3 Cleaning . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 41
5.4 Disposal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 41
6 Replacement parts and accessories . . . . . . . . . . . . . . 42
6.1 Combination electrodes . . . . . . . . . . . . . . . . . . . . . . . . . 42
6.2 General accessories . . . . . . . . . . . . . . . . . . . . . . . . . . . 42
7 What to do if... . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 43
8 Technical data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 44
8.1 Measurement characteristics . . . . . . . . . . . . . . . . . . . . . 44
8.2 Application characteristics . . . . . . . . . . . . . . . . . . . . . . . 44
8.3 General data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 45
8.4 Electrical data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 47
Overview SensoLyt®690
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1 Overview
1.1 Structure of the SensoLyt®690 pH/ORP armature
Fig. 1-1 Structure of the SensoLyt®690 pH/ORP armature
Note
The pH combination electrodes that can be used are available as
accessories (see chapter 6 REPLACEMENT PARTS AND ACCESSORIES).
Impedance converter An impedance converter integrated in the armature shaft converts the
high-impedance measurement signal of the electrode into a low-
impedance signal. This ensures an interference-free signal
transmission even over greater distances.
1.2 Recommended fields of application
In conjunction with the SensoLytSEA(-HP), SensoLytDWA and
SensoLytECA pH combination electrodes as well as the
SensoLytPtA ORP combination electrode, the SensoLyt®690 pH/
ORP armature is suitable for stationary measurements in water and
wastewater applications.
1Protective hood
2Temperature sensor
3Electrode (not contained in the scope of delivery)
4Electrode receptacle
5Armature shaft
12345
SensoLyt®690 Safety
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2 Safety
2.1 General information on safety
These safety instructions contain all instructions that have to be
followed for a safe operation of the SensoLyt®690 pH/ORP armature.
Before starting any work with the SensoLyt®690, carefully read the
safety instructions and strictly follow all protective measures
mentioned.
Always keep this operating manual in the vicinity of the armature.
General safety
instructions
Safety instructions in this operating manual can be recognized by the
warning symbol (triangle) in the left column. The signal word (e. g.
"Caution") indicates the level of the danger:
Warning
indicates instructions that must be followed precisely in order to
prevent serious dangers to persons.
Caution
indicates instructions that must be followed precisely in order to
avoid slight injuries or damage to the instrument or the
environment.
Other labels
Note
indicates notes that draw your attention to special features.
Note
indicates cross-references to other documents, e.g. operating
manuals.
Safety SensoLyt®690
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2.2 Authorized use
The authorized use of the SensoLyt®690 consists of the stationary
measurement of pH or ORP and temperature in conjunction with a pH
or ORP combination electrode. The technical specifications according
to chapter 8 TECHNICAL DATA must be observed. Only operation
according to the instructions given in this operating manual is
considered to be authorized.
Any other use is considered to be unauthorized. Unauthorized use
invalidates any claims with regard to the guarantee.
2.3 User qualifications
Calibrating the SensoLyt®690 requires the handling of chemicals.
Thus, we assume that the relevant personnel are familiar with the
necessary precautions to take when dealing with chemicals as a result
of their professional training and experience.
2.4 General safety instructions
Function and
operational safety
The armature left the factory in a safe and secure technical condition.
The failure-free function and operational safety of the armature is only
guaranteed if the generally applicable safety measures and the special
safety instructions in this operating manual are followed during its use.
The smooth functioning and operational safety of the armature can only
be guaranteed under the environmental conditions that are specified in
chapter 8 TECHNICAL DATA.
The specified temperature (chapter 8 TECHNICAL DATA) must be
maintained during the application and transport of the armature.
Protect the armature, particularly against frost or overheating.
SensoLyt®690 Safety
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Safe operation If safe operation is no longer possible, the armature must be taken out
of operation and secured against inadvertent operation.
Safe operation is no longer possible if the armature:
has been damaged in transport
has been stored under adverse conditions for a lengthy period of
time
is visibly damaged
no longer operates as described in this manual.
If you are in any doubt, contact the supplier of your armature.
Obligations of the
operator
The operator of the armature must ensure that the following rules and
regulations are followed when dealing with hazardous substances:
EEC directives for protective labor legislation
National protective labor legislation
Safety regulations
Safety data sheets of the chemical manufacturer.
Caution
All changes of the SensoLyt®690 that exceed the work described
in this operating manual are not allowed. Repair work may only be
carried out by WTW Weilheim.
Commissioning SensoLyt®690
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3 Commissioning
3.1 Scope of delivery
SensoLyt®690 pH/ORP armature
The armature is equipped with a protective hood and protection
caps
Operating manual.
3.2 Installation
Caution
The SensoLyt®690 pH/ORP armature may only be submersed in
conjunction with a mounted combination electrode. When
exchanging the electrode, no moisture may get into the armature,
as otherwise the armature will be destroyed. Which electrodes
can be used together with the SensoLyt®690 pH/ORP armature is
given in section 6.1 COMBINATION ELECTRODES.
Connection to the
measuring transmitter
The connection cable of the SensoLyt®690 is ready to be connected
to the terminal strip of a measuring transmitter with high-impedance
pH/ORP input. For all further information please refer to the operating
manual of the measuring transmitter. The assignment of the cable
wires of the SensoLyt®690 can be found in the chapter 8 TECHNICAL
DATA of this operating manual.
Note
Do not suspend the sensor on the sensor connection cable. Use an
armature or electrode holder. Information on this and other
accessories is given in the WTW catalog and on the Internet.
SensoLyt®690 Commissioning
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3.3 Commissioning / Getting the instrument ready for
measuring
Note
A KCI-filled plastic cap is mounted on the tip of the sensor to keep the
electrode active during storage (or during longer pauses in measuring).
The cap must be removed for measuring.
Mounting the
combination electrode 1Unscrew the protective hood from the armature.
2Pull off the blind plug from the plug head socket of the
armature.
3Screw off the protective cap of the plug head connector of the
electrode.
Commissioning SensoLyt®690
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Caution
Push the connected electrode into the armature right up to the
stop so that the connection is watertight.
4Screw the electrode into the plug head socket of the armature.
5Push the unit into the armature up to the stop.
6Pull the KCI-filled plastic cap off the electrode for measuring.
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