In process measurement, one of the fundamental response to corrosive measuring medium is use appropriate material resistant to the corrosion for instrument’s wetted-part, sensing diaphragm or its coating, electronic case or other required parts and fittings.
PTF...
Corrosive media are substances that can cause damage or degradation to surface and structure via chemical reactions. In the context of measurement instrument, corrosive media usually involve liquids or gases that may react chemically with materials of the instrument over...
Bimetallic thermometers use a bimetallic strip to convert temperature changes into mechanical displacement. The core operating idea is based on the expansion of metals who changes their volume in response to temperature fluctuations. Bimetallic strips are composed of two...
Storage vessels and pipelines are key equipment for oil and gas storage and transportation, connecting all stages of the industry. From extraction to delivery to end users, petroleum products undergo multiple processes of storage, transportation and loading & unloadi...
Typically speaking, a cleanroom is constructed to establish a environment where containment of pollutant particles is controlled to low level. Cleanroom is extensively applicable in every industrial processes that impact of small particles needs to be eradicated, such as...
The diaphragm seal is a method of installation used to protect instruments from harsh process conditions. It acts as a mechanical isolator between process and instrument. The protection method is generally used with pressure and DP transmitters that connects them to the ...
Pressure is the amount of force exerted perpendicular to the surface of an object, per unit area. That is, P = F/A, from which it is obvious that smaller area of stress or stronger force reinforce applied pressure. Liquid/Fluid and gas can also apply pressure as well as...
Given the critical role of pressure in the process control of all kinds of industries, precise and reliable instrumental integration is paramount. Without proper coordination of measuring device, connection components and field conditions, entire section in a factory mig...
Heat sinks are often used in electronic devices to dissipate heat energy away, cooling down the devices to moderate temperature. Heat sink fins are made of heat conductive metals and applied on high temperature device absorbing its heat energy and then emit to ambience v...
In normal operations, several accessories are commonly used to assist differential pressure transmitters in functioning properly. One of the vital accessory is valve manifold. The purpose of its application is to protect the sensor from single-side over pressuring damage and isolate the transmitt...
With respect to transmitter signal transmission in industrial automation applications, 4~20mA is one of the most common choice. In the case there will be a linear relationship between the process variable( pressure, level, temperature, etc.) and the current output. 4mA represents lower limit, 20m...
When using a temperature sensor/transmitter, the stem is inserted into the process container and exposed to the measured medium. In certain operating conditions, some factors could causing damage to the probe, such as suspended solid particles, extreme pressure, erosion,...