Temperature Measurement


Temperature signal conditioning of non-linear devices

December 2003 Temperature Measurement

Most temperature transducers have non-linear functions in relation to temperature. The physical properties that we use to derive the temperature reading are rarely linear. To use these in a control system or even for simple readout one linearises the physical property to the temperature scale.

The common transducers used for temperature are normally signal conditioned to standard instrumentation signals eg, 4 to 20 mA. However, one often encounters devices that are not commonly catered for. An example is an optical pyrometer.

Omniflex has released a programmable transmitter with the facility to linearise signals to suit specific applications. Simple (and free) PC-based software is used to implement the lineariser function and downloaded to the universal programmable transmitter using a programming cable.

The illustration shows graphically the input signal and required output.

Typical applications would include:

* Optical pyrometers.

* Thermisters.

* Exotic thermocouples or RTDs.

* Tank level in cylinders using level probes.

* Reverse acting controllers.

* Signal inversion 4 to 20 m A to 20 to 4 mA.

* Special response curves.

For more information contact Ian Loudon, Omniflex, 031 207 7466, [email protected], www.omniflex.com



Credit(s)



Share this article:
Share via emailShare via LinkedInPrint this page

Further reading:

Upgrading an outdated alarm monitoring system
Omniflex Remote Monitoring Specialists Industrial Wireless
Legacy alarm replacement specialist, Omniflex has successfully upgraded Guernsey Electricity’s MPAS90 alarm annunciator systems, which were first installed decades ago and are obsolete.

Read more...
Cathodic protection design considerations that influence ESG outcomes
Omniflex Remote Monitoring Specialists Electrical Power & Protection
Major infrastructure like wharves, bridges, pipelines and tanks are at constant risk of corrosion. David Celine, managing director of cathodic protection specialist Omniflex, explains how CP system design can support ESG commitments, while simultaneously lowering costs and improving maintenance capabilities.

Read more...
Upgrading obsolete rack-based alarms
Omniflex Remote Monitoring Specialists Industrial Wireless
Legacy alarm replacement specialist, Omniflex has supported a major oil and gas company in Qatar by upgrading the obsolete MPAS 90 alarm systems at one of its major plants in the country.

Read more...
Infrared solutions for glass manufacturing challenges
Temperature Measurement
In the glass industry, infrared temperature monitoring is crucial for maintaining product quality and process efficiency. Instrotech has infrared sensors and cameras which provide non-contact temperature measurements, making them ideal for these high-temperature environments.

Read more...
Becoming a leader in alarm annunciators
Omniflex Remote Monitoring Specialists SCADA/HMI
The rise of the digital age and PC-based systems and graphical interfaces led many to view the traditional annunciator market as obsolete. Omniflex explains how the company saw the market differently to then established players like Highland and Rochester, and how it reshaped the industry.

Read more...
Intelligent process stabilisation in injection moulding
Temperature Measurement
A new benchmark in precision temperature control for plastics processing is being set by technotrans.

Read more...
A technical partnership that lasts
Omniflex Remote Monitoring Specialists News
Ian Loudon, international sales and marketing at remote monitoring specialist, Omniflex reflects on the longevity of the partnership with Sasol, the key technology milestones along the way, and the most recent project in South Africa.

Read more...
New temperature transmitters with Profibus connectivity
Temperature Measurement
Siemens is enhancing its temperature measuring device portfolio with the transmitter duo, Sitrans TH420 PA and Sitrans TF420 PA. Both devices feature Profibus connectivity, advanced safety functions and expedited commissioning all in one unit.

Read more...
Omniflex upgrades alarms for Uganda hydro plants
Omniflex Remote Monitoring Specialists Industrial Wireless
Omniflex has worked with Uganda Electricity Generation Company to provide an upgrade solution for the plant alarm equipment across the Nalubaale and Kiira hydroelectric power stations on Lake Victoria.

Read more...
Enhancing industrial efficiency through advanced temperature control
Iritron Temperature Measurement
Iritron has been offering modular smart thyristor drives to the local and international mining, minerals and metals market, including the latest new leading innovations in temperature control technology. These drives combined with advanced proportional-integral-derivative (PID) control will change the way large industries manage their heating processes, reducing costs and extending equipment lifespan.

Read more...









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.




© Technews Publishing (Pty) Ltd | All Rights Reserved