Hach-Lange LZU5390 User Manual [en, de, es, fr, it]
53 90
EC
53 90
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Key points. Hauptteile.
Puntos clave. Points clé.
Punti chiave. Pontos chaves.
Cablepress.
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Kabelverschraubung.
Prensacables.
Presse-câble.
Pressacavi.
Prensa cabos.
Connection protector.
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Steckerschutz.
Protector del conector.
Protecteur du connecteur.
Protettore connessione.
Protetor do conector.
MP-5 connector.
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MP-5-Stecker.
Conector MP-5.
Connecteur MP-5.
Connettore MP-5.
Conector MP-5.
1/2” NPT stainless steel.
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Edelstahlgewinde 1/2” NPT.
Rosca 1/2” NPT en acero inox
Filetage 1/2” NPT en acier inox.
Filettatura 1/2” NPT in acciaio inos.
Rosca 1/2” NPT em aço inox.
Titanium body, electrode 1.
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Titangehäuse, Elektrode 1.
Cuerpo de titanio, electrodo 1.
Corps en titane, électrode 1.
Corpo in titanio, elettrodo 1.
Corpo em titânio, eletrodo 1.
Pt 1000 temperature sensor.
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Temperatursensor Pt 1000.
Sensor de temperatura, Pt 1000.
Capteur de température, Pt 1000.
Sensore di temperatura, Pt 1000.
Sensor de temperatura, Pt1000.
Electrode 2, titanium.
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Elektrode 2, Titan.
Electrodo 2, titanio
Electrode 2, titane.
Elettrodo 2, titanio.
Eletrodo 2, titânio.
(EU Directive 2002/96/EC)
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Conductivity cell
Introduction
The 53 90 is a cell for pipes and reactors.
They include an integrated Pt 1000 temperature sensor.
SAFETY NOTE
Before use with hazardous substances, find out about the relevant hazards, protective measures, and what
to do in an emergency.
Cell preparation
Before use for the first time immerse
the electrodes in ethanol for 15 s, and
rinse with distilled water. Apply the same
procedure for a cell not being in use for
long time.
Installation
The cell should always be mounted in immersion or fl otation housings, with PG 13,5
thread.
See Housing instruction manual.
Cable (not included). Connected to mul-
tiple cables with MP-5 connector.
Mounting. Directly onto pipes or reactors.
Calibration
Before measurement, calibrate with standard solutions.
See User’s Manual of conductivity meter.
Measurements. Recommendations
• Both, calibration and measurement
must be performed under slight stirring
of standards and samples. The stirring
speed in the two cases should be identical.
• The sample must cover the measuring
electrodes 7.
• Ensure that during measurement there
are not air bubbles over the measuring
electrodes.
• After measurement, rinse the cell with
distilled water or with sample to be
measured.
With time and use the titanium alters
its colour. This change does not affect the
good functioning of the cell.
Maintenance
Keep the electrodes surface clean 7.
If the thorough rinse with distilled water
is not sufficient, suitable solvent for the
elimination of sample rests can be used.
This solvent must not produce chemical
attack over the cell materials.
Inorganic contamination: Immerse the
cell in diluted hydrochloric acid or in chromic acid. Afterwards rinse thoroughly with
distilled water.
Organic contamination: Use suitable
solvent (see cell’s materials), next utilize
alcohol and distilled water as in Cell preparation is described.
Storage
Store the cell dry.
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53 90
GB
Life of the cell
The cell lifespan is unlimited if suitable
maintenance is applied and the cell does
not break.
Troubleshooting
... Reading 0 independently of the mea-
sured sample.
Broken cable.
Replace the cell.
... Unstable reading.
... Impossible calibration.
Dirty measuring electrodes or air
bubbles on their surface.
Clean or shake slightly the cell.
... The obtained readings differ a lot from
the real values.
Verify that the conductivity is covered
by the measuring interval of the cell.
Re-calibrate using standards in good
conditions.
... slow cell response
Regenerate the cell.
Specifications
Approx. constant 0.15 cm
Measuring range 0.1 µS/cm to 10 mS/cm
Operating temp. 0 to 100 °C
Max. pressure 6 bar (25 °C)
Temp. sensor Pt 1000
Body material titanium, PVDF, s.steel
Electrode material titanium
Thread 1/2” NPT
Connector MP-5
Min. immers.
depth
-1
10 mm
Applications
Clean waters, low conductivity waters,
etc.
CERTIFICATE OF QUALITY
The attached cell 53 90 has passed the
quality test and fulfils the following specifications:
• EC error 5 %.
between 0,1 µS/cm and 10 mS/cm.
• Temperature error 0.5 ºC.
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