Dual input smart temperature transmitter
September 2001
Temperature Measurement
In keeping with ongoing development of smart technology, Honeywell has introduced the STT25T, an extension to the well-established range of STT250 temperature transmitters. The product is aimed at reducing installation costs associated with wiring separate transmitters.
Compact in size, the STT25T is a convenient retrofit utilising direct head-mounting of two temperature sensors in the same housing. Using either thermocouples or resistance temperature detectors (RTD), or a combination thereof, provides valuable features in key applications.
In high-temperature applications where the high-accuracy RTD may possibly be damaged, the STT25T solution provides a thermocouple backup. The transmitter may also be configured to validate drift or raise an alarm in duplex/dual thermocouples or RTDs if specific differences between the two values occur.
A 4 to 20 mA output with HART communication protocol provides ease of interrogation, using on-line diagnostics or remote access, including sensor monitoring. A hard-wire link enables selection of upscale or downscale failsafe in the event of a failure, ensuring appropriate failsafe action. Another useful feature is the ability to select latching or nonlatching failsafe where intermittent sensor problems can force corrective action or clear if the error disappears.
Sensor integrity is maintained by allowing the use of dissimilar sensor input types, reducing the possibility of degradation. A full range of sensors and thermowell accessories is available from Honeywell Southern Africa, enabling an integrated transmitter/sensor/thermowell solution.
Honeywell Southern Africa
(011) 805 1201
[email protected]
Further reading:
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...
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...
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...
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...
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...
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...
Non-contact infrared thermometer
Temperature Measurement
AMETEK LAND has developed a new non-contact infrared thermometer for precise measurement and control during deposition processes in optical fibre manufacturing.
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...
printer friendly version