The firm has recently introduced the SmartSens range of analytical sensors, said to mark a turning point for this kind of analysis. As the first family of two-wire, loop powered analytical sensors incorporating integrated transmitter technology, SmartSens sensors significantly reduce the risk of failures along the chain from the sensor to the process control system whilst easing the handling of this kind of analytical sensor.
Until now, says the firm, analytical sensors required the use of an external (proprietary) transmitter in order to translate the sensor signal for use in the control process. This introduces potential for error, in terms of the requirements of IEC 61508/IEC 61511 in the chain from sensor to process control system; the transmitter represents the main source of error in percentage.
Poor installation, cabling or configuration of the transmitter are frequently occurring issues. To eliminate these risks, Krohne miniaturised the transmitter and fitted it into the sensor head. Any SmartSens sensor can be connected directly to the process control system, as the sensors feature direct communication via 4…20 mA/HART.
Krohne says it is the first provider to offer a direct connection from the sensor to the process control system via a standardised fieldbus.