Load cells are transducers that are used to convert work, force or pressure into an electrical signal. Load cells are also called as load transducer or load sensors. The force is measured on the basis of deflection or increase in fluid pressure. There are electronic and pneumatic/hydraulic type load cells: Electronic load cells: The electronic load …
Introduction The pneumatically operated recorder is still used today, particularly in remote locations. It does not use electricity so it does not need any special intrinsic safety measures when it is used in hazardous areas. Examples of the pneumatic recorders are shown below manufactured by Foxboro. They are the series 120 Consotrol recorder and the …
Instruments I hope you have a general understanding what a feedback control loop is, if not please refer the following article – Feedback Control Loop Sensors You have read that a sensor monitors and measures what is happening in the process. Examples of sensors include: thermocouples, floats, limit switches, pressure switches, pressure switches, moisture meters, and …
Displacer level instruments use the Archimedes Principle to measure the level of a liquid by measuring the weight of a rod that is immersed in the process liquid. As liquid level rises, the displacer rod experiences a greater buoyant force, appearing lighter to the sensing instrument, which interprets the loss of weight as a rise …
How does a Level troll work? Name the parts of a pneumatic Level troll.   Read More »
An instrumentation calculator for converting a standard 4-20mA signal to a 3-15 psi signal is a tool used in industrial automation and control systems. This conversion is commonly required in process control applications where different types of instruments are used to measure and control variables such as pressure, level, or flow. The 4-20mA signal is …
Calculator for 4- 20mA signal to 3-15 psi signal conversion Read More »
What is the motion balance principle and why it is utilized in pneumatic instruments? Motion balance instruments will create a motion to oppose the input motion. In order to maintain a constant position for the flapper or nozzle in the pneumatic instruments motion balance principle is used. Pneumatic instruments are mostly utilized for measuring purposes …
The Instrument Air Header Schedule is a document that contains all of the information regarding the instrument air header and manifolds positioned in the process area. The Instrument Air Header Schedule contains the following information: What is an Instrument Air Header? Air headers are designed to distribute air supply from the compressor to pneumatically operated …
The control valve is a device meant to control the flow rate or flow direction of the fluid in the process. It is referred to as the final control element. This control valve will adjust the flow passage as directed by a signal controller to modify or control the flow rate. The basic and most …
InstaConvert – Instrumentation and Electrical tool Instaconvert is a calculator and converter app that will be very useful for instrumentation and electrical engineers. It can do most of the electrical and instrumentation calculations. This app can do the flow rate calculation by using the input parameters such as pipe diameter, constructed diameter, measured pressure difference, …