Pressure Transmitter

In industrial measurement and control, pressure transmitters are everywhere. But in vacuum systems, environmental monitoring, and high-precision applications, you may notice that engineers prefer absolute pressure transmitters instead of the more common gauge pressure transmitters. At first glance, they look similar, but the reference point and measurement logic behind them are fundamentally different: Gauge pressure […]

Overview: Differential pressure flow meters are widely used in industrial applications to measure flow rates by calculating the difference in pressure across a restriction in the pipe. It is common for the original range of the flow meter to be inadequate once the system is in operation. This article discusses how to handle such situations

Pressure calibration for the double flange level transmitter is a crucial step to ensure measurement accuracy. Below are the detailed steps and precautions for the calibration process: Calibration Steps 1. Pre-calibration Preparation Tools and Equipment: Prepare a standard pressure source (such as a manual pressure pump with higher accuracy than the level transmitter), a precision

When selecting pressure transmitters, terms like “absolute pressure” and “gauge pressure” often cause confusion. A user once requested a pressure transmitter with a measurement range of 0~-90kPa absolute pressure, but was told that only a gauge pressure transmitter could be used. Why is that? 1. Absolute vs. Gauge Pressure: Understanding the Difference A user wanted

When measuring hydrogen gas with a pressure transmitter, it is common to coat the stainless-steel diaphragm with a thin layer of gold. This may seem unnecessary at first glance, but the reason lies in the unique properties of hydrogen and its interaction with stainless steel. Below, we explore the scientific and practical reasons for this

Pressure sensors use pressure-sensitive chips (such as piezoresistive silicon membranes) to detect pressure changes. If the sensor comes into direct contact with corrosive media, the silicon membrane may be damaged, affecting performance and reducing the sensor’s lifespan. Therefore, protective packaging is required to safeguard the pressure-sensitive chip while still allowing the pressure to be transmitted

The integration of flow meters and differential pressure (DP) transmitters is based on the principle of differential pressure measurement. The DP transmitter converts the small differential pressure signals generated by the flow element into standard electrical signals, enabling accurate flow measurement and remote transmission. This creates a symbiotic relationship between “flow measurement” and “signal conversion.”

In the field of industrial measurement, integrating pressure sensors with level transmitters is a fundamental technique for accurately measuring fluid levels. This integration leverages the principle that liquid static pressure is proportional to the liquid height, converting pressure signals into remote, precise level data. The process can be broken down into three core steps: signal

Selecting the right diaphragm for a pressure transmitter is crucial, as it directly affects the accuracy, stability, longevity, and overall reliability of the measurement. In industries like chemicals and pharmaceuticals, where corrosive environments are common, diaphragm selection is even more critical for both safety and cost control. Choosing the right diaphragm material and type can

When choosing the range for a differential pressure (DP) transmitter, it’s essential to consider both process conditions and the transmitter’s technical specifications. Below is a detailed guide outlining the key steps and considerations for selecting an appropriate DP transmitter range. 1. Determine the Measurement Range Identify the Maximum Range of Pressure Variation: Start by evaluating