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Pressure transmitter

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Endress + Hauser has released the Cerabar-S pressure transmitter. It measures up to 700 bar and operates in direct contact with the process at temperatures up to 350°C.

It comes with a range of process connections for various applications, from mining to offshore. For low-pressure applications from full vacuum up to 40 bar the Ceraphire cell is fitted as standard. Its 99.9% Al2O3 purity makes it more resistant to mechanical abrasion and damage and more chemically inert than the original ceramic cell. The material is up to 30 times thicker than metal membranes, oil-free, and can be used in applications up to 150°C.

For high-pressure applications up to 700 bar, the transmitter has a mono-silicone cell with a stainless steel diaphragm. This version tolerates temperatures of up to 280°C without the need for chemical seals. In the absence of fill fluid, the measured value cannot be affected by temperature changes. For applications up to 350°C, chemical seals are available. Accuracy is 0.05% of the measured variable, and stability is 0.05% of the upper range limit/year.

The housing of Cerabar-S has been designed to satisfy the most recent safety demands for process measuring devices, including SIL2 and PED requirements and all initially accepted Ex ratings, including IEC Ex.

A die-cast, powder-coated aluminium housing is available for chemically aggressive environments such as mining and power generation. A stainless steel housing is available for food applications and highly aggressive environments, such as in sea air or chlorine atmospheres. Both versions feature secondary containment design. The sensor compartment is mechanically separated from the electronics compartment in order to eliminate the possibility of harm to the operators in the event of a process accident.

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