Solid electrolyte pH probes

May 2005 Maintenance, Test & Measurement, Calibration

Specifically for applications in heavily polluted media, emulsions, dispersions, or for use in media containing proteins and sulphides, JUMO's new pH electrodes ensure that measurement is performed reliably and economically. The electrodes use a polymer-based solid electrolyte and annular gap diaphragm that is characterised by a high immunity to interference. This combination obviates diaphragm clogging.

For application in general aqueous solutions (swimming pool monitoring, drinking water treatment, aqueous media without any dirt changes, media containing few ions), pH sensors with gel filling and ceramic diaphragms can continue to be used. As a result of the direct contact between the electrolyte and the medium, an increased thinning effect has to be expected in such media with solid-electrolyte electrodes, which would considerably reduce the operational life of the electrode. The solid electrode is free from silver chloride, which makes it insensitive to sulphide ions. In order to increase the operational life of the electrode, the electrolyte has been provided with solid potassium chloride (KCl) that is finely distributed in the gel. As a result the electrolyte becoming clearer in appearance as its useful life is depleted, providing a useful indication of when replacement will be necessary.

The JUMO Ag/AgCl conductive system - tried and tested for many years - is used as a reference system. The solid electrolyte securely encloses the reference system. The U glass permits operation at temperatures ranging from -5 to +80°C. The electrode withstands pressures up to 600 kPa and can be installed in existing fittings via a Pg13.5 gland. On request a Pt100 or Pt1000 temperature probe can be integrated.

For more information contact Anastas Schnippenkotter, ASSTech Process Electronics & Instrumentation, 011 794 7057.

Further reading:

Keeping lifting equipment safe and securely on track
Maintenance, Test & Measurement, Calibration
In the hustle and bustle of mining production, the focus on the servicing of lifting equipment can unintentionally be sidelined. This situation can easily be avoided with a customised Konecranes Service Agreement that offers a comprehensive and systematic approach to asset management.

Read more...

---

Tablet oscilloscope
Vepac Electronics Maintenance, Test & Measurement, Calibration
The PeakTech 1212 is a new, innovative oscilloscope designed to resemble a standard tablet in size and form. This tablet oscilloscope allows users to record any common measurement quantity and type, just like a desktop oscilloscope.

Read more...

---

Powerful test controller
Maintenance, Test & Measurement, Calibration
XJTAG is launching the XJLink-PF20, brings the same dependability and robustness to a new 4-TAP two-port configuration, and offering both functional and JTAG boundary scan testing with the XJTAG testing suite’s long-established power and control.

Read more...

---

Multichannel AWGs for GHz signal generation
Vepac Electronics Maintenance, Test & Measurement, Calibration
Spectrum Instrumentation has introduced its new flagship Arbitrary Waveform Generators from the company’s Netbox series, an easy-to-use instrument line that can be controlled via an Ethernet cable from any PC or network.

Read more...

---

The smart choice for test and measurement solutions
RS South Africa Maintenance, Test & Measurement, Calibration
As the demand for precision and efficiency continues to grow across industries, RS PRO, the own brand of RS, provides a complete portfolio of test and measurement equipment engineered to meet the highest standards of performance, safety and value.

Read more...

---

New frequency counter with 10 digits of resolution
Comtest Maintenance, Test & Measurement, Calibration
B&K Precisio has a new series of universal frequency counters designed for a wide range of frequency measurement applications.

Read more...

---

Verification using Heartbeat Technology is a breeze
Maintenance, Test & Measurement, Calibration
Heartbeat Technology reflects Endress+Hauser’s long-term commitment to enhancing measurement reliability and efficiency across a growing product portfolio.

Read more...

---

Clog-resistant nozzle for powerful stationary tank cleaning
Maintenance, Test & Measurement, Calibration
As EXAIR and BETE continue to build on a strong partnership, EXAIR has recently added a selection of BETE products to the site, including the innovative BETE HydroClaw tank and vessel cleaning nozzle.

Read more...

---

Clog-resistant nozzle for powerful
Maintenance, Test & Measurement, Calibration
As EXAIR and BETE continue to build on a strong partnership, EXAIR has recently added a selection of BETE products to the site, including the innovative BETE HydroClaw tank and vessel cleaning nozzle.

Read more...

---

Why your next oscilloscope should
Comtest Maintenance, Test & Measurement, Calibration
The PC-based USB oscilloscope is a cutting-edge, adaptable alternative to traditional benchtop oscilloscopes that’s redefining test and measurement.

Read more...

---