Transmitter built-in

Introduced in 2013, SMARTPAT sensors revolutionised the handling of analytical measurements: KROHNE miniaturised the entire transmitter technology and fitted it into the sensor head. Thanks to its unique circuit technology and special encapsulation, the SMARTPAT series offer process reliability at a level previously unknown.

Sensor with integrated transmitter technology
2-wire, 4-20 mA/HART, EX zone 0
No separate transmitter needed, extensive savings possible
Handling via HART handheld possible
Offline calibration and regeneration under constant conditions extends sensor service life

SMARTPAT sensors function as 2-wire loop powered systems. They can be used both in point-to-point operation and for multi-drop installations. Up to 32 sensors can be connected in a loop of more than 1000 m in length.

Each SMARTPAT sensor is specifically designed for its field of application: approvals and certifications range from installation in explosive (zone 0) to hygienic areas. Thanks to its standardised connector design, SMARTPAT sensors are compatible with most of the existing mounting assemblies.

Direct connection to the process control system

KROHNE is the only supplier that uses a real open standard – and a direct connection from sensor to the process control system via the standardised fieldbus. The SMARTPAT sensors store all data and transfer it bidirectionally and digitally with the 4...20 mA current signal via the HART® protocol to process control and asset management systems, handhelds, PCs and other peripheral devices. Sensor configuration is possible using a HART® handheld device and freely available HART® DD or also via freely available PACTwareTM FDT/DTM on all conventional asset management and process control systems.

Offline calibration

The integrated transmitter allows for offline calibration of the sensors: SMARTPAT sensors can be connected directly to a PC via OPTIBRIDGE (USB interface cable) for offline calibration and configuration with PACTware™ FDT/DTM. Before the offline calibration the sensors can be cleaned and regenerated. Depending on the application purpose and site, their service life is up to four times longer under these circumstances.

The sensor handling in the laboratory shows a huge advantage instead of sensor handling at the application site under continually changing conditions. Due to the controlled, clean conditions in the laboratory, a much more exact calibration can be performed, too. This enables more precise measuring results and higher product quality.

Additionally SMARTPAT sensors can still be calibrated and configurated online in accordance with HART® handheld and free of charge HART® DD software.

Saves a lot of money, time and effort

The elimination of the external transmitter reduces the price and maintenance costs of the complete measuring point considerably in comparison with any other competing measuring system. Additionally the offline calibration reduces time and effort significantly. At the same time, it increases productivity and efficiency of the measuring point.