Local instrumentation and control specialist Endress+Hauser has released a new double junction electrode pH probe that offers both extended product life in applications with 'poisonous' substances as well as an IP68 connector for the pH probe and cable to alleviate historical connection problems.
Endress+Hauser has had its CPF81 pH probe as part of its analytical product basket for some time. Similar to other combination probes, the CPF81 consists of a measuring electrode - a standard electrode with a glass sensitive bulb through which the hydrogen ions migrate - and a reference electrode. However, this is where the similarity ends, as the CPF81's reference electrode is made up of two compartments separated by a Teflon diaphragm. The primary diaphragm is three times as thick as a standard diaphragm, which makes 'poison' intrusion into the electrode very difficult, while the secondary diaphragm that seals the reference electrode further hampers the 'poison' migration. The compartment between the primary and secondary diaphragm is filled with potassium nitrate, and acts as a 'poison' trap to catch any poisons that have migrated through the primary diaphragm. In this trap, the 'poison' reacts with potassium nitrate, forming various complex chemical compounds. Extended exposure of the potassium nitrate to poisoning agents will eventually deplete it, but during this time, the reference chamber remains untouched and constant at pH 7.00, and with a potassium chloride concentration of 3 mol. Only when the poisons have migrated through the secondary diaphragm and start to contaminate the reference, is probe replacement necessary.
In the wastewater industry, many poisons such as cyanides, hydrogen sulphide and sulphites are present which contaminate pH probes and necessitate their frequent replacement, resulting in unplanned direct costs, as well as indirect costs such as downtime and loss of productivity. The wastewater double junction electrode probe from Endress+Hauser is an established product, but is further enhanced by the addition of the TOP68 connection head.
For accurate pH measurement, an accurate connection between the probe and cable is required. Fixed cable probes are difficult to insert and replace for calibration due to the wind up of the cable, while separate cable and probe assemblies are very sensitive to moisture intrusion. Should moisture penetrate the connection, both cable and probe have to be discarded since the connection cannot be dried out. The main reason is that the pH signal requires a high impedance connection to transmit the millivolt signal. To overcome this electromechanical problem, Endress+Hauser has developed an IP68 TOP68 connector for their probes. The connector base material is made of a hydrophobic material, PFA, resulting in a water repelling action which ensures that should moisture occur inside the connection, the base material does not absorb it. This is all encapsulated in PPS that is temperature shock and chemical resistant. The connector was placed under stringent tests to ensure that it complies with all the rules and regulations of the IP68 standard, and is autoclavable, sterilisable and waterproof.
The combination of double junction electrode pH probe and an IP68 connector offers the best of both worlds, giving the customer both chemical and mechanical protection against everyday problems in pH measurement.
USB-C connector with ratchet locking system for maximum vibration and shock resistance
Enclosures, Cabling & Connectors
Fischer Connectors has brought its world-renowned Swiss engineering expertise to the universal USB-C standard.The Fischer UltiMate Series, the company´s flagship range for harsh environments, now includes a pre-cabled USB-C connector equipped with Fischer Connectors´ new Ratchet Locking System.
Read more...Keeping a close eye on product quality and purity Endress+Hauser South Africa
Sensors & Transducers
Colour measurements are necessary in many processes to avoid product losses and ensure safe production and batching. The Memosens Wave CKI50 process spectrometer from Endress+Hauser is a compact, robust and process-friendly device allowing quality, batching and phase checks to be performed by a single instrument for the entire visible colour spectrum.
Read more...Cable solution simplifies connectivity SEW-EURODRIVE
Enclosures, Cabling & Connectors
Cabling can be one of the most challenging aspects of automation and drive system installations, often leading to delays, faults and inefficiencies. SEW-EURODRIVE offers a solution that simplifies connectivity, its innovative Digital Data Interface technology combined with a single cable system.
Read more...Where simplicity meets reliability Endress+Hauser South Africa
Temperature Measurement
The new iTEMP TMT31 temperature transmitter from Endress+Hauser combines simplified selection, ordering, installation and operation with the highest reliability and long-term stability in one product.
Read more...The use of stainless steel cable glands in the food industry
Enclosures, Cabling & Connectors
In the food industry, hygiene, durability, and compliance with stringent safety standards are paramount. Stainless steel cable glands from Pratley offer an ideal solution for food industry professionals who require robust, corrosion-resistant and reliable products.
Read more...Rittal launches new flat pack IT enclosure solution
Enclosures, Cabling & Connectors
Rittal South Africa, the supplier of IT infrastructure solutions and industrial enclosures, has announced the local launch of the FR IT Rack – a flat-pack IT enclosure solution.
Read more...Simple and efficient level measurement in the mining, minerals and metals industries Endress+Hauser South Africa
Editor's Choice Level Measurement & Control
Measuring devices in the mining, minerals and metals industries face the challenge of varying material states and long distances in measurement height. Endress+Hauser’s answer to these challenges is the new Micropilot family.
Read more...Building the control panels of the future Omron Electronics
Enclosures, Cabling & Connectors
The industrial automation world is built on robust and efficient control panels. These control panels are designed precisely and assembled, managing machines, processes and equipment across different industries. Omron assists panel builders in navigating complex challenges that could impact project efficiency and profitability.
Read more...Epiroc’s new trailing cable repair solutions
Enclosures, Cabling & Connectors
In a significant step towards supporting southern Africa’s mining and industrial sectors, Epiroc has introduced its trailing cable service, focused on providing top-quality cable repairs that meet both South African and Australian specifications.
While every effort has been made to ensure the accuracy of the information contained herein, the publisher and its agents cannot be held responsible for any errors contained, or any loss incurred as a result. Articles published do not necessarily reflect the views of the publishers. The editor reserves the right to alter or cut copy. Articles submitted are deemed to have been cleared for publication. Advertisements and company contact details are published as provided by the advertiser. Technews Publishing (Pty) Ltd cannot be held responsible for the accuracy or veracity of supplied material.
printer friendly version