Universal AS-i temperature sensor
March 2007
Sensors & Transducers
The new AS-i temperature sensor from IFM Electronic is a universal transmitter with integrated AS-i slave. The transmission occurs according to the analog protocol 7.3, which is implemented in all masters to AS-i specification 2.1 as a standard. Claimed to be the first AS-i temperature sensor with a S-7.3 profile, the model TAA431 has a -10°C to 150°C temperature evaluation range with dynamic T05 = 1 s and TO9 = 3 s response times. The sensor offers flexible mounting options and provides high mechanical stability with IP 69K protection rating. Due to its Class A Pt sensor element and factory calibration, a precision of 0,1 K at 60°C is achieved making the sensor suitable for most processes.
In many industrial applications precise temperature measurement is critical, especially in biological processes such as fermentation and pasteurisation that take place at a temperature range between 60°C and 70°C. In this temperature range the TAA431 works at its highest precision. By using the temperature transmitter it is now possible to connect the temperature sensor directly to the AS-interface, reducing wiring considerably.
Temperature values are automatically written into a clearly defined data range in the higher-level controller. The transfer is made according to the analog protocol 7.3. The value is transferred in 1/10°C as a standard - a value of 1234 corresponds to a temperature of 123,4°C.
The integrated G½ thread, welding adapters and progressive ring fittings ensure easy mounting. By using the flush mounting clamp adapters and thread cover accessories, the temperature sensor is suitable for hygienic applications.
IFM Electronic is represented locally by Shorrock Automation.
For more information contact Chris Huxham, Shorrock Automation, +27 (0)12 345 4449, sales@shorrock.co.za or visit www.shorrock.co.za
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