Multipoint temperature sensors
Multipoint temperature sensors for all industries
Multipoint assemblies are products for several applications from low to high pressure process reactors as well as for storage tanks. In these applications a temperature profile for control of the process in the reactor is measured and recorded. The challenge is to be less invasive as possible and to have a high number of temperature probes, enabling the shortest response time.
Material selection, mechanical design, heat treatments and construction technics are the latest state-of-the-art in terms of product optimization.
Endress+Hauser offers both standardized and fully customized modular multipoint thermometers for various applications.
Our portfolio of multipoint thermometers comprises:
3D-customizable, flexible sensors (with or without thermowell) – MultiSens Flex
Linear-profile sensors (with or without main thermowell) – MultiSens Linear
Minimally invasive sensors – MultiSens Slim
Linear-bundled sensors (on a rope or in a conduit) – MultiSens Bundle
Depending on the specific design, these multipoints can be offered:
with or without transmitter
with or without diagnostic chamber
with RTD (Resistance Temperature Detector) or TC (Thermocouple) sensors
In the process automation two measurement principles for temperature have asserted themselves as a standard:
RTD - Resistance temperature detectors: Measuring principle
The RTD sensor changes the electrical resistance with a change in temperature. They are suitable for the measurement of temperatures between -200 °C and approx. 600 °C and stand out due to high measurement accuracy and long-term stability. The sensor element most frequently used is a Pt100. As a standard, Endress+Hauser RTD sensors fulfill the IEC 60751 accuracy class A.
TC - Thermocouples: Measuring principle
A thermocouple is a component made of two different metals connected with each other at one end. An electrical potential (thermoelectric force) is caused due to the Seebeck effect at the open end if the connection and the free ends are exposed to different temperatures. With the help of the so-called thermocouples reference tables (see IEC 60584) the temperature at the connection (measuring junction) can be concluded.
Thermocouples are suitable for temperature measurement in the range of 0 °C to +1800 °C. They stand out due to the fast response time and high vibration resistance.
Measuring systems designed for the individual application
Straight or 3-dimensional temperature profile measurement for reactors and vessels
Design and material selection for high process temperatures and pressures as well as corrosive media