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1. Overview Bar-type flow meters, also known as insertion differential pressure flow meters, operate based on Bernoulli’s principle. By measuring the differential pressure generated across the sensor (total pressure minus static pressure), they calculate flow velocity and volume. Their simple structure, low pressure loss, and ease of installation make them ideal for large-diameter pipelines (typically […]

1. Differences in Application Requirements Pressure transmitters—especially differential pressure transmitters—often require range adjustments based on specific field conditions. For example, when used for level measurement in sealed tanks, condensation of the gas-phase medium can cause condensate to accumulate in the impulse lines or low-pressure chambers. This creates an unintended static pressure, resulting in output deviation.

Pressure transmitter accuracy is a key indicator of measurement reliability. However, the belief that “higher accuracy is always better” is not universally applicable. In industrial practice, the selection of a pressure transmitter should be based on actual application requirements, rather than pursuing the highest specification available. 1. Understanding Accuracy in Pressure Transmitters Accuracy defines how