Analytical sensors

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do no longer require transmitters

Measurement & Instrumentation

Analytical sensors
Analytical sensors

KROHNE introduces SMARTSENS, the first family of 2-wire loop powered analytical sensors with integrated transmitter technology. The sensors significantly reduce the risk of failures along the chain from sensor to process control system and ease the handling of analytical sensors in a revolutionary way. The first step includes the sensors for pH, ORP and conductivity, followed by other parameters.

Until today, analytical sensors require an external (proprietary) transmitter on site that translates the sensor signals to the process control system. False installation, cabling or configuration of the transmitter are frequently occurring problems. To eliminate these risks, the miniaturised transmitter is fitted into the sensor head: Any SMARTSENS sensor can be connected directly to the process control system, featuring direct communication via 4…20 mA/HART, offering a direct connection from sensor to the process control system via a standardised fieldbus.

Due to influences such as medium, temperature, humidity, environmental conditions or pollution, analytical sensors lose their accuracy over time and need to be calibrated, cleaned, regenerated and ultimately replaced. Today, most of the analytical sensors in the field use analog technology and have to be calibrated on site together with the transmitter, even if they are installed at remote or difficult-to-reach measuring points under open sky. This presents far from ideal conditions for a calibration which may result in false values in the process control system.

All SMARTSENS sensors are digital sensors and can be (re-)calibrated offline in a laboratory under controlled conditions. The sensors will store the calibration data and can just be plugged in again on site. For offline calibration, the sensor can be connected directly to a PC running the same PACTware (FDT/DTM) as applied in the assetmanagement system, using an USB interface cable for bi-directional HART 7 communication and power supply. Target industries for SMARTSENS include chemical, pharmaceuticals, food and beverage as well as power, water and wastewater applications. Each SMARTSENS sensor is specifically designed for its area of application: approvals and certificates range from installation in explosive areas (zone 0) to hygienic areas.

Posted on April 17, 2013 - (607 views)
by
Krohne Messtechnik GmbH
Ludwig-Krohne-Straße 5
47058 Duisburg - Germany
+49-203-3010
nofax+49-203-301300
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Analytical sensors

do no longer require transmitters

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