Hach-Lange 5364 - Manual (Page 5)

Measuring range 0 to 14 pH
Operating temp. 0 to 130 °C
Max. pressure 6 bar
Reference element cartridge
Diaphragm open, 2 lateral
Electrolyte solid
Body material glass
Thread PG 13,5
Connector S8
Min. immersion depth 15 mm
5
GB
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 protec-
tor
with KCl 3M.
Life of an electrode
The average life expectancy of a pH pro-
cess electrode oscillates between 6 or 12
months, depending on the working con-
ditions (in standard applications).
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
Samples with dyes, pigments and colour-
ings. Fermentation. Sugar industry. Sam-
ples with oil. Organic solvents.
Resistant to sterilisation with steam and
in autoclave.
Resistant to CIP processes
.
CERTIFICATE OF QUALITY
The attached electrode 53 64 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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