Hach-Lange 5333 - Manual (Page 5)

Measuring range 0 to 14 pH
Operating temp. 0 to 80 °C
Max. pressure 6 bar
Reference element cartridge
Diaphragm ceramic
Electrolyte gel
Body material glass
Thread PG 13,5
Connector S8
Min. 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 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
Swimming pools, drinking water, gas
scrubbing towers, boiler waters, detoxifi-
cation, outlet waters from a waste water
treatment plant (WWTP), etc.
Limitations
Low-conductivity solutions.
Viscous or dirty solutions able to clog
quickly the diaphragm.
CERTIFICATE OF QUALITY
The attached electrode 53 33 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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