Hach-Lange 5334 T - Manual (Page 5)

Measuring range 0 to 14 pH
Operating temp. 0 to 100 °C
Max. pressure 5 bar
Reference element cartridge
Diaphragm
ring of porous
PTFE
Electrolyte gel
Body material glass
Thread PG 13,5
Connector MP-4
Temperature sensor Pt 1000
Min. immersion depth 12 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
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 elec-
trode for the application.
Specifications
Applications
Waste water, galvanising industry, osmosis
processes, demineralized water, dirty or
viscous samples , etc.
CERTIFICATE OF QUALITY
The attached electrode 53 34 T has passed
the quality test and follows the next speci-
fi cations:
• Asymmetry potential < ± 15 mV.
• Sensitivity, pH 4 to 7 (at 25 ˚C) > 98%.
• Response time, pH 4 to 7 < 20 s.
• Temperature error 0.5 ºC.
53 34 T_DOC013.97.90275_Ed 0510.indd 5 3 34 T DOC013 97 90275 Ed 0510 i dd 5 21/9/10 16:06:58 21/9/10 16 06 58