In many applications, heating elements are employed to heat a product in an oven, furnace, or with jets of hot air. Conventional control devices using contact thermocouples, measure and control the oven air temperature, heating element temperature, or air jet temperature, in an effort to maintain product temperature and therefore quality, often with less than satisfactory results.
Replacing the contact thermocouple (for example, measuring oven temperature) with a non-contact IRt/c (IR thermocouple) measuring product temperature directly will ensure that product temperature is maintained.
Some readjustment of the controller parameters is required because of differences in sensor response times (an IRt/c is much faster) and time required to heat the product, compared to the original sensor (slower). After installing the IRt/c and calibrating the controller reading using a Microscanner D-series, initiate the self-tuning cycle of the controller and check to see that the control is stable and accurate. If it will not self-tune properly, manually adjust the control coefficients to achieve stable control. Since the product is likely to change temperature more slowly than the original sensor, start by slowly increasing the ‘D’ of the PID coefficients.
One sensor, three switchable output modes with IO-Link
Temperature Measurement
: Siemens’ new Sitrans TS200 IO-Link temperature sensor is available in three sizes, and offers three switchable output modes in one device with remote firmware update capability and an integrated LED for quick status checks.
Read more...SCE appointed authorised Vaisala distributor for South Africa
Temperature Measurement
SCE has been appointed the authorised Vaisala distributor for South Africa, giving local engineers direct access to world-class humidity, temperature and CO2 measurement technology backed by full in-country calibration and technical support.
Read more...Thermal imaging camera with high thermal resolution Vepac Electronics
Temperature Measurement Maintenance, Test & Measurement, Calibration
Vepac Electronics introduces a compact thermal imaging camera that helps technicians spot temperature problems before they become costly failures.
Read more...Test bench for temperature calibrating power semiconductors Beckhoff Automation
Temperature Measurement
Precise temperature characteristics are essential for performing power cycling tests on power semiconductors. Infineon Technologies determines these characteristic curves on a test bench using PC-based control. As a result, calibration has become more precise and the efficiency of the entire test laboratory has increased significantly.
Read more...Fire prevention strategies with thermal imaging
Temperature Measurement
Effective fire prevention strategies focus on identifying, reducing and managing fire risks before they become incidents. Through proactive measures, planning and reliable detection technologies, organisations can create safer environments and minimise the likelihood of fire outbreaks.
Read more...High-precision fill quantity control in food supplement production
Temperature Measurement
Vital Products was looking for a precise and efficient solution to check the weight and ensure the completeness of its products. Minebea Intec, a specialist in industrial weighing and inspection technologies, was able to provide a solution.
Read more...Infrared solutions for glass manufacturing challenges Instrotech
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...Decarbonising a heat and power plant Valmet South Africa
Temperature Measurement
Valmet is delivering a boiler fuel conversion for a combined heat and power plant in Poland. After modernisation, coal will be replaced entirely with certified forest biomass supplied by local providers.
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.
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