Hach-Lange 5300 - Manual (Page 5)

Measuring range 0 to 14
Operating temp. 0 to 80 °C
Max. pressure 6 bar
R. element Ag/AgCl wire
Diaphragm ceramic
Electrolyte gel
Body material
interior glass /
exterior polycarbonate
Thread PG 13,5
Connector S8
Immersion depth 17 mm
5
GB
... impossible to perform calibration.
... very slow response.
Dirt on the diaphragm or the mem-
brane.
De-hydrated membrane.
Electrode ageing or wear.
Clean, regenerate, replace the elec-
trode.
Storage
The connector should be protected from
humidity by the protective cap
.
Place the electrode in the storage protector
with KCl 3M sat. AgCl.
Life of an electrode
The average life expectancy of a pH pro-
cess electrode oscillates between 6 or 12
months, depending on the working condi-
tions.
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 elec-
trode for the application.
Specifications
Applications
Swimming pools, drinking waters.
Aqueous samples in general.
Limitations
Low conductivity, dirty or viscous solu-
tions. Products with colloids or solids in
suspension. Samples containing substanc-
es which react with the silver ion.
CERTIFICATE OF QUALITY
The attached electrode 53 00 has passed
the quality test and follows the next speci-
fications:
• 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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