Stable, safe, and high precision measurement of temperature signals in all stages of the manufacturing process is of the essence at a polysulfide plant.
One polysulfide plant is one of China’s largest chloroacetic acid suppliers. Chloroacetic acid is a basic chemical used in a variety of chemical processes. The unit serves customers on all continents and has been successfully operating since 2006.
Complicated process with need for safe and precise temperature measurement
The process of manufacturing chloroacetic acid is divided into several process steps. Each step is complicated requiring high temperature measuring accuracy for the control system – as well as intrinsically safe devices.
Problems with transmitters not providing accurate signals – or no output signals
Prior to testing temperature transmitters like the TXUN Family, the plant had experienced problems with temperature transmitters not providing accurate signals or, for unknown reasons, failing to provide output signals. Temperature is a vital parameter in chemical processes. When failing, it can lead to process stop and affect the entire plant performance.
After testing the transmitter for six months – it became site standard
The plant staff decided to test a TXUN-HT 2-wire transmitter with HART® protocol. After six-month trial the results were clear: the transmitters were performing with extremely high measurement accuracy and fast response time. The staff decided to make them the site standard.
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