Seeking help in selecting a gauge pressure transmitter

When selecting a gauge pressure transmitter, factors to consider include the properties of the medium (such as the corrosive nature of lactide vapor mentioned here), medium temperature, measurement range, accuracy requirements, and installation environment. Given that your application involves high temperatures, corrosive gases, and high precision requirements, here are several well-known imported brands and models recommended; these brands typically offer solutions that meet the needs of such special applications: 1. Rosemount: – Model: 3051CD gauge pressure transmitter – Features: It comes with diaphragms suitable for use in high-temperature and corrosive environments, and it offers a precision level of up to 0.2% FS. 2. Yokogawa: – Model: EJA-E series gauge pressure transmitters – Features: A variety of diaphragm materials are available, suitable for measuring corrosive media, with an accuracy of up to 0.2% FS. 3. Endress+Hauser: – Model: Cerabar PMP71 gauge pressure transmitter – Features: ceramic or metal sensor, suitable for high-temperature and corrosive media; accuracy meets your requirements. When selecting a product, be sure to communicate your specific requirements to the supplier, such as the corrosive properties of the medium, whether additional cooling devices are needed at high temperatures to prevent the measuring elements from overheating, and how potential crystallization issues can be addressed (special cleaning or heating devices may be required). Furthermore, for media that tend to crystallize, it is necessary to ensure that the installation location of the transmitter and the piping design allow the medium to maintain a certain temperature during operation, thereby preventing crystallization. It is recommended to consult the technical support of each brand before making a formal purchase, in order to gain a more detailed understanding of the product’s suitability as well as any additional accessories or solutions that may be needed. At the same time, local after-sales service and technical support are also factors to consider during the selection process. .

I checked the technical specifications, and only the Rosemount 3051 meets the required performance standards. The Yokogawa EJA and E+H models either have a temperature tolerance of only 100°C or have a range that is too large, resulting in insufficient performance for measuring pressures in the 0–500 Pa range

The precision of 3051 is also insufficient