JUMO GmbH & Co. KG
Delivery address: Mackenrodtstraße 14
36039 Fulda, Germany
Postal address:
36035 Fulda, Germany
Phone: +49 661 6003-0
Fax: +49 661 6003-607
Email: mail@jumo.net
Internet: www.jumo.net
JUMO Instrument Co. Ltd.
JUMO House
Temple Bank, Riverway
Harlow, Essex CM 20 2DY, UK
Phone: +44 1279 63 55 33
Fax: +44 1279 62 50 29
Email: sales@jumo.co.uk
Internet: www.jumo.co.uk
JUMO Process Control, Inc.
6733 Myers Road
East Syracuse, NY 13057, USA
Phone: +1 315 437 5866
Fax: +1 315 437 5860
Email: info.us@jumo.net
Internet: www.jumousa.com
Page 1/21
Type 201020/76...
Type 201025/51...
Type 201020/51...
Data Sheet 201020
V1.01/EN/00438069
201020 series - pH electrodes
201025 series - redox electrodes
Brief description
JUMO tecLine electrodes are high-quality sensors for professional applications in process and
industrial measurement technology. These electrodes are known for their use of top-quality
materials and components. They are designed as combined electrodes (the glass or metal
electrode and the reference electrode are combined in one shaft). A temperature probe can also
be integrated as an option, depending on the type.
Suitable versions are available to meet a wide variety of requirements:
JUMO tecLine
• For industrial and communal water and wastewater engineering
• For measurements in suspensions and varnishes
• For measurements in low-ion media
• For high-alkaline, high-temperature and sterilization processes
• For media containing fluorides and low-temperature applications
• PRO version for the toughest operating conditions
JUMO tecLine sensors are state-of-the-art for modern pH and redox electrodes. Each electrode
is a quality product and is individually tested as a matter of routine. Modern production facilities
ensure consistent characteristics.
General information about the construction of the JUMO tecLine series
All standard electrodes are made from physiologically safe and FDA-listed materials.
The sensors are equipped with lead-free shaft glass and are therefore conform to RoHS.
Provisional
V
JUMO tecLine pH, JUMO tecLine Rd
pH and redox combination electrodes
in glass or plastic shaft versions
20102000T10Z001K000
V1.01/EN/00438069
Page 2/21Data Sheet 201020
JUMO GmbH & Co. KG
Delivery address: Mackenrodtstraße 14
36039 Fulda, Germany
Postal address:
36035 Fulda, Germany
Phone: +49 661 6003-0
Fax: +49 661 6003-607
Email: mail@jumo.net
Internet: www.jumo.net
JUMO Instrument Co. Ltd.
JUMO House
Temple Bank, Riverway
Harlow, Essex CM 20 2DY, UK
Phone: +44 1279 63 55 33
Fax: +44 1279 62 50 29
Email: sales@jumo.co.uk
Internet: www.jumo.co.uk
JUMO Process Control, Inc.
6733 Myers Road
East Syracuse, NY 13057, USA
Phone: +1 315 437 5866
Fax: +1 315 437 5860
Email: info.us@jumo.net
Internet: www.jumousa.com
20102000T10Z001K000
Active element of pH and redox electrodes
Reference system design variations (reference electrode)
The only reference electrolytes used for JUMO tecLine electrodes are those that have no silver ions. A cartridge-style conduction system contains
the silver/silver chloride (Ag/AgCl). Various forms of diaphragm are used.
Other pH and redox electrodes can be found in the following data sheets:
Membrane
glass
or active
component
Designation pH or
redox range
Temperature range Typical application
UW glass Universal glass pH 0 to 12
(briefly pH 14)
-5 to +80 °C Water and wastewater engineering, process
measurement technology, low-ion media
HA glass High-alkaline glass pH 0 to 14 -5 to +80 °C For heavily alkaline media (above pH 12)
HT glass High-temperature glass pH 0 to 14 0 to 135 °C For temperatures above 80 °C
or for heavily alkaline media
DS glass Steam-sterilizable glass pH 0 to 12 -5 to +80 °C
briefly up to 130 °C
(20 min)
Biotechnology, pharmaceutical and food
technology, sterilization processes
C glass Fluoride-resistant glass pH 0 to 11 -5 to +50 °C Media containing fluorides (hydrofluoric acid)
(c(HF) ≤ 1000 mg/l)
Platinum tip Redox measurement ±2000 mV -10 to +135 °C Chromate reduction, nitrite oxidation,
swimming pool and drinking water disinfection
Gold tip Redox measurement ±2000 mV -10 to +135 °C Cyanide oxidation, water disinfection
Diaphragm type Explanation Possible
electrolytes
Recommended minimum
conductivity of the medium
Typical application/
limitations
1× ceramic diaphragm High-quality zirconium
dioxide diaphragm
a
a
Zirconium dioxide diaphragm: high-quality ceramic material of consistent porosity. This means optimum diffusion properties.
Polymerized
solid electrolyte
Without salt reserve: 100 µS/cm
With salt reserve: 50 µS/cm
General water or wastewater
engineering, industrial processes, etc.
Liquid KCl 5 µS/cm
3× ceramic diaphragm As above, the increased
number means more
KCl escapes
Polymerized
solid electrolyte
Without salt reserve: 50 µS/cm
With salt reserve: <50 µS/cm
For polluted or low-ion media;
low-temperature applications
Liquid KCl 0,1 µS/cm
Glass fiber diaphragm Glass fiber bundle
instead of a ceramic
diaphragm for
electrodes with a
plastic shaft
Polymerized
solid electrolyte
Without salt reserve: 150 µS/cm
With salt reserve: 100 µS/cm
General water or wastewater
engineering (lightly polluted
media)
PTFE ring diaphragm Large surface area ring
diaphragm
Polymerized
solid electrolyte
Without salt reserve: 100 µS/cm
With salt reserve: 50 µS/cm
Only for very heavily polluted media or
adherent media containing oil, for
example
Annular-gap or
perforated diaphragm
Open transition
between the solid
electrolyte and the
medium, implemented
in annular or punctate
form
Polymerized
solid electrolyte
Without salt reserve: 500 µS/cm
With salt reserve: 500 µS/cm
Suspensions, varnishes, media
containing solids,
heavily polluted media;
not suitable for very pure drinking
water or low-ion media
• Data sheet 201005 – JUMO ecoLine/JUMO BlackLine
pH and redox combination electrodes
• Data sheet 201030 – JUMO laboratory pH combination electrodes
• Data sheet 201050 – JUMO ISFET pH combination electrode
• Data sheet 201081 – JUMO glass pH electrodes • Data sheet 201082 – JUMO single/twin redox electrodes
• Data sheet 201083 – JUMO reference electrode • Data sheet 201085 – JUMO compensation thermometer