The Omnigrad range of Temperature Products from Endress Hauser meets the high standards required by the process industry.
Omnigrad provides Endress Hauser quality in design, documentation, logistics and service in Temperature sensors.
A Resistance Temperature Detector (RTD) is a temperature responsive device based on a predictable resistance change in the sensing element.
The EN 60751 standard specifies requirements for industrial Platinum resistance sensors and covers the Pt 100 industrial thermometers.
The Pt 100 sensing element has a resistance of 100 %u03A9 at 0°C.
According to EN standard and most common industrial applications, the Pt 100 type sensors are used for temperature gauging and control in the range from -50°C to 400°C or -200°C to 600°C.
RTDs offer three main advantages:
high accuracy
excellent long-term stability
high signal output level which allows transmission over long distances without ancillary equipment.
Basic construction of Platinum resistance elements cannot be used directly in contact with process environments, hence the complete thermometers are built as assemblies which can withstand light, medium and heavy duty industrial conditions.
In general, the sensor assembly includes three components:
the resistance thermometer inset
the protecting tube (thermowell)
the terminal housing.
