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JUMO tecLine PRO pH electrode (process electrode, HT glass, annular gap diaphragm, screw head Pg13.5, salt reserve)

Article number: 800341
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Product information "JUMO tecLine PRO pH electrode (process electrode, HT glass, annular gap diaphragm, screw head Pg13.5, salt reserve)"

Thanks to its robust design, this version is particularly suitable for thermally demanding process conditions.

JUMO tecLine PRO pH electrode as process electrode with HT glass, annular gap diaphragm, Pg13.5 screw head and salt reservoir

This pH electrode is designed for demanding pH measurements in process applications. It is particularly suitable for areas where high mechanical and chemical resistance is required. With its design as a process electrode featuring HT glass, open annular gap diaphragm, Pg13.5 screw head, and salt reservoir, this version is optimized for robust operating conditions.

Technical data

  • Basic type: JUMO tecLine PRO pH combination electrode
  • Basic type extension: process electrode
  • Sensing element: HT glass
  • Measuring range: pH 0 to 14
  • Temperature range: 0 to +110 °C
  • Diaphragm: annular gap diaphragm, gel made of polymerized solid electrolyte (“diaphragm-free”)
  • Electrical connection to electrode: Pg13.5 screw head
  • Additional features: salt reservoir

Advantages and special features

A key advantage of this version lies in its robust construction. According to your description, the electrode has a stable PVDF body, which practically eliminates the risk of sensor breakage. This is particularly important in industrial applications where the measuring point must not only provide reliable pH values but also withstand everyday mechanical stress. At the same time, the electrolyte of this combination electrode ensures stable readings even in critical, sulfite-containing media. This makes the electrode especially interesting for applications requiring a durable and process-suitable solution.

Why should you choose this electrode?

This version is particularly suitable when a robust process electrode is required for demanding media and elevated temperatures. The HT glass is designed for a measuring range of pH 0 to 14 and temperatures from 0 to +110 °C. This makes it ideal for processes that require both high temperature resistance and reliable pH measurement. The open annular gap diaphragm with gel made of polymerized solid electrolyte is also advantageous for applications requiring a durable and low-maintenance design. The salt reservoir further enhances the overall configuration.

The connection side is also designed for professional use. The Pg13.5 screw head allows proper integration into suitable measuring systems. Additionally, a Pt1000 temperature sensor is integrated according to your general description. This is especially useful when temperature needs to be measured directly at the process point, for example for temperature compensation or additional process monitoring. Combined with its robust construction, this results in a well-designed electrode for applications requiring reliable pH measurement, temperature resistance, and high durability.

Typical applications

  • chemical industry
  • wastewater treatment
  • sewage treatment plants as well as the paper industry

Wherever a durable process electrode with stable measurement performance and robust construction is required, this version is particularly suitable. It can fully demonstrate its strengths, especially under thermally demanding process conditions.

Other attributes

Country of origin DE
Customs tariff number 90278930
Technical data
Active elements of the pH and redox electrode
Membrane glass or active element Designation pH and redox range Temperature range Typical applications
UW glass universal glass pH 0 ... 12
(briefly pH 14)
-5 ... +80 °C water and wastewater engineering,
process instrumentation,
low-ion media
HA-glass high-alkali glass pH 0 ... 14 -5 ... +80 °C In strongly alkaline media (above pH 12)
HT-glass high-temperature glass pH 0 ... 14 0 ... +135 °C At temperatures above 80 °C or
in strongly alkaline media
DS-glass steam-sterilisable glass pH 0 ... 12 -5 ... +80 °C
for short periods up to 130 °C (20 min)
biotechnology, pharmaceutical and food technology,
sterilisation processes
C-glass fluoride-resistant glass pH 0 ... 11 -5 ... +50 °C fluoride-containing (hydrofluoric acid-containing) media
c(HF) ≤ 1000 mg/l
platinum tip redox measurement ±2000 mV -10 ... +135 °C chromate reduction,
nitrite oxidation,
swimming pool and drinking water disinfection
gold tip redox measurement ±2000 mV -10 ... +135 °C cyanide oxidation,
water disinfection
Design variants of the reference system (reference electrode system)
Only silver-ion-free reference electrolytes are used in JUMO tecLine electrodes. A cartridge discharge system contains the silver/silver chloride (Ag/AgCl). Various diaphragm designs are used.
Diaphragm type Description Possible electrolytes Recommended minimum conductivity of the measuring medium Typical applications / limitations
1× Ceramic diaphragm High-quality zirconium dioxide diaphragma Polymerised solid electrolyte Without salt reservoir: 100 µS/cm
With salt reservoir: 50 µS/cm
General water and wastewater engineering,
industrial processes, etc.
liquid KCl (potassium chloride) 5 µS/cm
3× Ceramic diaphragm As above, with increased KCl outflow due to a higher number of outlets Polymerised solid electrolyte Without salt reservoir: 50 µS/cm
With salt reservoir: < 50 µS/cm
In contaminated or low-ion media;
low-temperature applications
liquid KCl (potassium chloride) 0,1 µS/cm
Glass fibre diaphragm Glass fibre bundle instead of a ceramic diaphragm for electrodes with a plastic shaft Polymerised solid electrolyte Without salt reservoir: 150 µS/cm
With salt reservoir: 100 µS/cm
General water and wastewater engineering
(slightly contaminated media)
PTFE ring diaphragm Large-area ring diaphragm Polymerised solid electrolyte Without salt reservoir: 100 µS/cm
With salt reservoir: 50 µS/cm
Only if it is very dirty or e. g. oily, sticky substances
Annular gap or perforated diaphragm Open interface between the solid electrolyte and the medium, arranged in a ring-shaped or point-shaped design Polymerised solid electrolyte Without salt reservoir: 500 µS/cm
With salt reservoir: 500 µS/cm
Suspensions, paints, media containing solids, heavily contaminated media;
not suitable for very pure drinking water or low-ion media

a High-quality ceramic material with consistent porosity, resulting in optimal diffusion properties.