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Basic of Instrumentations

Differential Pressure Level Transmitter on Pressurized Tank

The difference from the atmospheric tank, the pressurised tank is an enclosed container in which has vapour pressure apply over the liquid and the value of the vapour pressure may vary along the time. Since the vapour pressure can not be neglected therefore, it should be measured by both pressure inlets of DP level transmitter. …

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Level Calculation for Diaphragm Seal Transmitter

Another installation method for level measurement using Differential Pressure level transmitter is by utilizing the diaphragm seal plus capillary tube. To determine the calibrated range for Differential Pressure level transmitter, the density of the filling fluid within the capillary must be taken into account in the calculation since the fill fluid also creates hydrostatic force …

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5 Types of Temperature Element

There are several temperature element types widely used to measure the temperature of a process substance. These types are categorized into mechanical temperature element and electronic temperature element. Mechanical temperature element uses the principle of thermal expansion, i.e. the element expands if the temperature rise and vice versa. Electronic temperature element uses the principle of …

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Why using a Temperature Transmitter?

In the temperature measurement system, an electronic temperature instrument needs to connect to a control system. In contrast, RTD and thermocouple can be directly wired to the control system inputs card or via Temperature Transmitter for signal conversion. Most of the applications, the temperature transmitter are used to convert thermocouple or RTD signal into 4~20mA …

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