1% Accuracy Pressure Transmitter

  Rugged, general purpose sensors that offer reliable and accurate measurements under harsh conditions. The sensor fitting is machined from a solid piece of 17-4 SS to provide stable operation when subjected to shock and vibration. PT-200s also incorporate digital compensation and temperature correction for high accuracy and stability. Low maintenance and will need little care. measure less than 2” from hex nut to electrical connection.     Visit https://www.apgsensors.com for more info.

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Strain Gauge Transducers

Strain gauges are used in many instruments that produce mechanical strain because of the affect being measured. In their own right, they are used to measure the strain in a structure being stretched or compressed. The strain gauge element is a very thin wire that is formed into the shape shown. This produces a long wire all in one direction but on a small surface area. The element is often formed by etching a thin foil on a plastic backing. The completed element is then glued to the surface of the material or component that will be strained. The axis […]

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Types of Level Guages

Level gauges measure the depth or level of liquids and powder in tanks. They use a variety of principles and produce outputs in electrical and pneumatic forms. The type to use depends on the substance in the tank. Here are a few The ultrasonic system reflects sound waves from the surface and determines the depth from the time taken to receive the reflected sound. The electronic version uses a variety of electrical affects including conduction of the fluid and capacitance. The pneumatic version bubbles air through the liquid and the pressure of the air is related to the depth. A […]

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Types of Pressure Transducers

Pressure sensors either convert the pressure into mechanical movement or into an electrical output. Complete gauges not only sense the pressure but indicate them on a dial or scale. Mechanical movement is produced with the following elements. · Bourdon Tube. · Spring and Piston. · Bellows and capsules. · Diaphragm. Bourdon tube The Bourdon tube is a hollow tube with an elliptical cross section. When a pressure difference exists between the inside and outside, the tube tends to straighten out and the end moves. The movement is usually coupled to a needle on a dial to make a complete gauge. It can […]

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What is Instrumentation?

The first question that popped up in my mind and raised to our professor during the first day of my instrumentation classes was that what is Instrumentation and how is it being used in process control?  “Simple, these are instruments that we  use in order to measure, satisfy and complete a given sequence that will control the process required ” my professor replied. then I taught, Duh! Instrumentation is not that complicated and might be a boring subject but then when he goes along introducing the different kinds of instruments that are involve in the process, then I started to get interested […]

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How does a 5/2 way directional valve work?

5/2 way directional valve working principle.      This instrument is not new to me. Since We started our pneumatic class on my third year in college, I already had the pleasure to meet this instrument. We even had to use this almost everyday, during our laboratory exercises. It’s always present in all our pneumatic and hydraulic trainers. How does this stuff really work?     A valve is a device that regulates the flow of fluid (gases, liquids,fluidized solids, or slurries) by opening and closing or partially obstructing passage ways.   A 5/2 way directional valve from the name […]

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