Hach-Lange 5303 User Manual [en, de, es, fr, it]
pH
53 03
pH
53 03
1
2
3
4
5
6
7
8
9
KCl 3M
2
Key points. Hauptteile.
Puntos clave. Points clé.
Punti chiave. Pontos chaves.
Protective cap.
1
Schutzkappe.
Tapón protector.
Bouchon protecteur.
Tappo protettore.
Tampa protetora
S8 connector.
2
S8-Stecker.
Conector S8.
Connecteur S8.
Connettore S8.
Conector S8.
PG 13.5 thread.
3
Montagegewinde PG 13,5.
Rosca de sujeción PG 13,5.
Filetage PG 13,5.
Filettatura PG 13,5.
Rosca de fi xação PG 13,5.
Reference element.
4
Referenzelement.
Elemento de referencia.
Élément de référence.
Elemento di riferimento.
Elemento de referência.
Internal diaphragm.
5
Internes Diaphragma.
Diafragma: interno.
Diaphragme interne.
Diaframma interno.
Diafragma interno.
Gel electrolyte.
6
Elektrolytgel.
Electrolito gel.
Électrolyte gel.
Elettrolita gel.
Eletrólito em gel.
Diaphragm: 3 ceramics.
7
Diaphragma: 3 Keramikelemente.
Diafragma: 3 cerámicos.
Diaphragme: 3 céramiques.
Diaframma: 3 ceramici.
Diafragma: 3 cerâmicos.
Sensitive glass membrane.
8
Sensitive Glasmembran.
Membrana sensible.
Membrane sensible.
Membrana sensibile.
Membrana sensível.
Storage protector.
9
Lagerungsschutz.
Protector de almacenamiento.
Tube protecteur de stockage.
Protettore per la conservazione.
Protetor para armazenamento.
(EU Directive 2002/96/EC)
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pH electrode 53 03
Introduction
The 53 03 is a low maintenance pH electrode
recommended for clean waters.
SAFETY NOTE
Before use with hazardous substances, find out about the relevant hazards, protective measures, and what
to do in an emergency.
Electrode preparation
• Remove the storage protector
• Verify that there are not air bubbles inside
the membrane
by shaking the electrode as a clinical thermometer.
Installation
In immersion, insertion, flotation housings,
etc. with PG 13,5 thread.
See Housing instruction manual.
In some cases the electrode is installed, with
the help of sockets and adapters, directly
onto pipes.
Cable. They are connected to coaxial cables
with an AS9 connector.
Calibration
See pH-meter instruction manual.
. They can be removed
.
Measurements. Recommendations
See pH-meter instruction manual.
Ensure that the electrode’s specifications are
adapted to the process.
Sample must cover the diaphragm
Maintenance
• Deposits forming on the electrodes,
caused by continual exposure of the sensors to a dirty or contaminated medium, is
one of the most frequent causes of problems when measuring pH. When possible
it’s recommended to use a housing with
automatic sensor cleaning system.
• When an electrode gets contaminated,
the simple rinsing with distilled water is
not suffi cient. The most suitable cleaning
solution is one which acts in a more selective way over the contamination (look for
regeneration solutions).
• Re-hydration. A “dry” electrode recovers
by immersing it in diluted HCl solution for
several hours. It is recommended to read
the information supplied with the electrode’s regenerating solutions.
Troubleshooting
... the meter always shows the same pH
value.
Short circuit in the electrode or cable.
Substitute the cable or the electrode.
... shifting of pH values.
Reference system contamination.
Replace the electrode
... unstable reading.
Diaphragm blockage.
Clean, regenerate, replace the electrode.
.
4
GB
... impossible to perform calibration.
... very slow response.
Dirt on the diaphragm or the membrane.
De-hydrated membrane.
Electrode ageing or wear.
Clean, regenerate, replace the electrode.
Storage
The connector should be protected from
humidity by the protective cap .
Place the electrode in the storage protector with KCl 3M.
Life of an electrode
The average life expectancy of a pH process electrode oscillates between 6 or 12
months, depending on the working conditions.
Electrodes exposed to high temperatures
do not last as long. Very alkaline mediums
also reduces the life span of electrodes.
If an electrode has too short life span,
less than three months, ask us about it.
Probably there is a more suitable electrode for the application.
Specifications
Measuring range 0 to 14 pH
Operating temp. 0 to 80 °C
Max. pressure 6 bar
Reference element cartridge
Diaphragm 3 ceramics
Electrolyte gel
Body material glass
Thread PG 13,5
Connector S8
Min. immersion depth
Applications
Swimming pools, drinking water, gas
scrubbing towers, boiler waters, detoxification, outlet waters from a waste water
treatment plant (WWTP), etc.
Limitations
Low-conductivity solutions.
Viscous or dirty solutions able to clog
quickly the diaphragm.
17 mm
CERTIFICATE OF QUALITY
The attached electrode 53 03 has passed
the quality test and follows the next specifications:
• Asymmetry potential < ± 15 mV.
• Sensitivity, pH 4 to 7 (at 25 ˚C) > 98%.
• Response time, pH 4 to 7 < 20 s.
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