Temperature Measurement


High reliability in temperature measurement

July 2018 Temperature Measurement

With Sitrans TH320/420 and TR320/420, Siemens introduces a new generation of reliable HART temperature transmitters for a wide range of sensor types, suitable for mounting in sensor head and rail mounting. They feature high availability of the measurement signal and ease-of-use. Due to the safety integrity level (SIL) 2/3 certification according to IEC 61508, the temperature transmitters are particularly suited for safety-critical applications. The devices also have a large number of country specific explosion protection certificates for all zones. They provide reliable results, even under extreme conditions down to -50°C. Main application areas include industries such as chemical, oil and gas, marine and power generation.

With fast and accurate sensor and transmitter tuning, the use of the Callendar-van Dusen method or 60-point-curve ensures highest measuring accuracy. Deviations can be detected and monitored through the drift detection with dual-channel transmitters, e.g. for preventive maintenance. Electronic device descriptions (EDD, DTM and FDI) allow the new transmitters to be used in all current distributed control systems. A quick start wizard is just one example of their user friendly features. Measurement values, device functions and visual alarm signals can be displayed and operation planning and implementation is very convenient using special visualisation components for Simatic PCS 7 (Sitrans Library).

When a sensor fails in operation, for example due to disconnection or short circuit, measurement failures may result in loss of control or production stops. To avoid this and to ensure high measurement availability through reliability and long term stability, maintenance planning is essential. The Sitrans TH420 and TR420 sensor backup function, drift detection and alarming make this possible. Using the four-wire connection for both sensors increases data accuracy and reliability as it allows a seamless transition to the second sensor in case the first sensor fails. The continuous balancing of the two independent sensors measuring in parallel, while detecting and monitoring measuring value deviations, allows the scope of maintenance to be planned as required, following the description above, and production stops to be avoided. Balancing the sensors using the Callendar-van Dusen method also meets the challenge of sensor inaccuracy caused by individual deviation from standardised Pt100 curves or by ageing. Outstanding transmitter accuracy and sensor balancing enable simpler calibration of the sensors directly in the transmitter and provide for highly precise individual values.

For more information contact Jennifer Naidoo, Siemens Digital Factory and Process Industries and Drives, +27 (0)11 652 2795, jennifer.naidoo@siemens.com, www.siemens.co.za



Credit(s)



Share this article:
Share via emailShare via LinkedInPrint this page

Further reading:

Sinumerik One Dynamics for motion control
November 2020, Siemens Digital Industries , Motion Control & Drives
Siemens has launched three powerful technology packages exclusively for the CNC Sinumerik One.

Read more...
Temperature measurement in the steel industry
November 2020, R&C Instrumentation , Temperature Measurement
Having recently joined forces, Raytek and Ircon are able to offer non-contact infrared thermometers and scanners to cover every aspect of temperature monitoring in steel manufacturing processes.

Read more...
Bringing intelligence to the shop floor with Siemens Industrial Edge
October 2020, Siemens Digital Industries , IT in Manufacturing
Siemens Industrial Edge closes the gap between local and cloud computing and enables high-frequency data exchange at field level.

Read more...
Validation goes digital
September 2020, Siemens Digital Industries , IT in Manufacturing
CVal allows customers in the pharmaceutical industry to produce digital, auditable plant documentation through efficient data handling across all disciplines using a central database and object orientation.

Read more...
New RTD transmitter
September 2020, Mecosa , Temperature Measurement
What characterises the APAQ 130 is simplicity. Users can easily configure the transmitters wirelessly with a smartphone or tablet.

Read more...
Temperature profiling in automobile manufacture
September 2020, R&C Instrumentation , Temperature Measurement
The automotive industry uses many materials to build cars. These have evolved over time, becoming more sophisticated and often requiring heat treatment at some stage of component manufacture.

Read more...
New iTEMP transmitter with Bluetooth
September 2020, Endress+Hauser South Africa , Temperature Measurement
Endress+Hauser’s new iTEMP TMT142B temperature transmitters deliver highly accurate and reliable measurements, wireless communication via Bluetooth and user-friendly operation packaged in a robust single-chamber field housing.

Read more...
Automation and digitalisation offer competitive edge in volatile markets
August 2020, Siemens Digital Industries , News
The current situation creates major challenges for industrial companies worldwide and shows that digitalised and highly automated production is more important than ever when it comes to gaining a competitive ...

Read more...
Temperature control in the glass industry
August 2020, R&C Instrumentation , Temperature Measurement
New products like the Endurance and Thermalert series ensure that whatever the temperature measurement and monitoring requirements, a solution can be found.

Read more...
Siemens South Africa joins forces with the National Ventilator project community in response to the COVID-19 pandemic
June 2020, Siemens Digital Industries , News
Siemens has been a long-standing partner of the Council for Scientific and Industrial Research (CSIR) in South Africa and have cooperated in various field of research, including manufacturing and mining. ...

Read more...