Keller has a complete range of pressure transmitters for use in hazardous areas. These intrinsically safe transmitters offer measurement ranges between 0,2 and 1000 bar, so they can be used for measurements of all types in areas subject to explosion hazards in Group II (gas), and as per the relevant ATEX directive. Individual types from the product range are also approved for Group I (mining) respectively Group II (dust).
Common features of all Y-line pressure transmitters include a low temperature error, with correspondingly high measurement accuracy. Thanks to the integrated temperature sensor and an additional digital circuit, the range of operating temperatures can be divided into as many as 120 sections with a width of 1,5 Kelvin. During factory calibration, a mathematical model is used to calculate individual compensation values for TK zero point and TK amplification for each of these sections, the values are then stored in the transmitter. During operation, these values are fed into the analog signal path according to the temperature, without reducing the 2 kHz signal processing dynamic. A relevant total error band for measurement purposes of 0,8 %FS can therefore be attained over the typical temperature range of -10 to 80°C. This includes all error sources, from linearity to range tolerance.
As an additional feature, Keller’s X-line pressure transmitters (Series 30) offer microcontroller-based electronic evaluation to ensure maximum accuracy. Each transmitter is gauged across the entire pressure and temperature range. This measurement data is used to calculate a mathematical model that enables correction of all reproducible errors. In this way, Keller can guarantee high accuracy on the basis of an error bandwidth within the overall compensated pressure and temperature range. The user of industrial transmitters may specify a choice of compensated temperature range at time of purchase, depending upon the application; i.e., either -10 to 80°C or 10 to 40°C. Otherwise, level transmitters are provided with a compensated range of 0 to 50°C. The calculated pressure value can be read via the interface, and is simultaneously processed as an analog signal.
A varied selection of structural designs, electrical signals and mechanical connection formats guarantee that these intrinsically safe pressure transmitters can be used for an extensive range of applications.
Paper might carry the message, but pressure carries the process VEGA Controls SA
Pressure Measurement & Control
VEGABAR pressure transmitters are designed to address the unique challenges faced by the pulp and paper industry. Built for durability and precision, they ensure reliable pressure monitoring in aggressive environments.
Read more...Capsules, steam and cream VEGA Controls SA
Pressure Measurement & Control
African cosmetic brands are increasingly outsourcing production to specialised contract manufacturers who use automation and high-precision tools to ensure quality and adapt quickly to regulatory changes. VEGA’s suite of level and pressure measurement solutions offers a robust foundation for profitability and quality assurance.
Read more...Differential pressure measurement made simple VEGA Controls SA
Pressure Measurement & Control
The VEGADIF 85 serves as an exemplary model of a differential pressure sensor. It combines universal applicability with high operational dependability and integrated overload protection, ensuring consistent performance even in the harshest conditions.
Read more...Smart pressure monitoring drives energy efficiency ifm - South Africa
Pressure Measurement & Control
The ifm PG17 electronic pressure gauge is part of the company’s next-generation PG series. It integrates IO-Link technology, enabling seamless, loss-free data transmission via a 24 V signal.
Read more...Electronic manometer with LED display ifm - South Africa
Pressure Measurement & Control
The new generation of PG type manometers are equipped with IO-Link and modern display units. Illuminated LED markings provide a quick overview of the current measured value. In addition to the various setting options for the display unit, IO-Link offers other advantages such as easy commissioning, quick sensor replacement and remote access options.
Read more...The critical role of temperature measurement in flame hardening Instrotech
Temperature Measurement
Flame hardening is a heat treatment process widely used on parts made from mild steels, alloy steels, medium carbon steels and cast iron. Accurate temperature measurement is not just important, but critical for the success of flame hardening.
Read more...Noncontact infrared temperature control in aluminium rolling process Instrotech
Temperature Measurement
The aluminium rolling process is critical to the aluminium manufacturing industry, where precise temperature measurement is essential for ensuring high-quality product output and protecting equipment. The Optris long-wavelength camera can accurately measure strip temperatures in cold rolling and coiling applications.
Read more...Rotary atomisers for efficient paint spraying Instrotech
Sensors & Transducers
Painting the bodywork is an integral component of vehicle manufacturing. Keller supplied intrinsically safe pressure transmitters and intrinsically safe temperature sensors to a client producing paint robots for the car industry.
Read more...Quality process control instrumentation Instrotech
Temperature Measurement
Instrotech is a leading provider of high-quality process control instrumentation and industrial automation solutions that are designed to optimise efficiency, reliability and safety across industries.
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