Pressure Transmitter

Selecting a pressure transmitter may seem straightforward, but choosing the right model for a specific application requires careful consideration of many factors. A pressure transmitter that performs perfectly in one process may experience measurement errors, shortened service life, or even failure in another due to differences in temperature, pressure, medium properties, or installation conditions. Successful […]

During routine field inspections, pressure gauges are always one of the key checkpoints. Inspectors usually look for questions such as: Does the pointer return to zero? Is the calibration label still valid? Is the seal intact? Is there a red mark on the dial? Most people understand the first few items. But when it comes

In industrial pressure measurement, many engineers focus only on pressure range, output signal, or installation size, while overlooking one critical factor: Should the application use a gauge pressure transmitter or an absolute pressure transmitter? In many normal applications, a gauge pressure transmitter is completely sufficient. However, in some special operating conditions — especially vacuum, low-pressure,

Common Causes of Zero Drift and Practical Solutions Anyone working in instrumentation has probably encountered this problem: Low differential pressure transmitters and micro-pressure transmitters are among the most unstable instruments in industrial sites when it comes to zero drift. This is especially common in applications such as: Furnace draft pressure Air duct micro-pressure Clean room

A pressure transmitter may leave the factory fully calibrated, thoroughly tested, and perfectly within specification. Yet once installed on site, it suddenly starts giving unstable readings, drifting values, or inaccurate measurements. Why? In many cases, the problem is not the instrument itself — it’s how the transmitter is selected, installed, and applied in real operating

The nameplate of a differential pressure (DP) transmitter may state an accuracy of ±0.075%, ±0.05%, or even ±0.04%. Many users assume this is the actual measurement accuracy they will achieve in the field. In reality, the final measurement error can be significantly higher due to factors such as turndown ratio, temperature changes, static pressure effects,

Pressure transmitters are among the most commonly used instruments in industrial settings. Despite their frequent usage, a simple yet often overlooked operation—zero calibration—is essential for maintaining accurate measurements. Why Do Pressure Transmitters Need Zero Calibration? Zero point shifts in pressure transmitters are common, typically caused by one or more of the following six factors: Changes

The Hidden Reason Experienced Engineers Always Know If you have ever walked through an industrial plant, you may have noticed that many pressure gauges are not connected directly to the pipeline. Instead, there is often a curved metal tube installed between the gauge and the process connection — usually in a U-shape, pigtail, or loop

Absolute pressure measurement refers to the pressure of a medium relative to absolute vacuum (0 pressure reference), which is different from gauge pressure that is referenced to atmospheric pressure. Absolute pressure transmitters are widely used in vacuum systems, sealed tanks, gas pipelines, distillation towers, and process pressure monitoring applications where accurate pressure measurement relative to

In any industrial automation system, inaccurate pressure measurement can compromise safety, product quality, and process stability. A pressure transmitter is often referred to as the “nerve ending” of a control system. If its zero point drifts, every downstream control action — from PID regulation to safety interlocks — may operate on incorrect data. Zero calibration