We are Singapore suppliers of a wide range of pressure transmitters, measuring gauge pressure or absolute pressure in various scenarios. Economically priced and quick deliveries.
The difference between Pressure Transducers vs Pressure Transmitters
These are basically the same device. In essence, they are pressure sensors and are made of components which have a sensing element which is designed to work with electronics that convert the pressure being sensed (the force) on the surface of the sensing element to an electronic output e.g. 4-20mA.
Pressure Sensor Element
Since pressure transmitters have become wide in use, the price to manufacture them has also reduced considerably. This gives more opportunity to end users who wish to not only view the pressure reading locally but also remotely through the electrical output.
Pressure Transmitter for Liquids Gas or Steam
DP Transmitters for Liquid Level Measurement
Our team has successfully configured pressure sensors for level indication offering significant savings in both cost and time for tank fabricators. These reliable level measurement devices help prevent overspill, empty tanks, and ensure basic control of the final liquid product.
Differential Pressure Transmitters for Liquid Level Measurement
A differential pressure transmitter (also called a DP transmitter) is a device that measures two pressures simultaneously unlike a simple pressure transmitter that is only measuring one pressure? What are the advantages of differential pressure transmitters? The main advantages are that they can be used to measure level in tanks. However, they can also measure flow rates in pipes. The differential pressure transmitter can measure the flow rates of many fluids including liquids, gases and steam. The DP transmitter is a common sight in most industrial settings because it is an economical way to measure flow rates. That is, as long as the pressure drop caused by the restriction is acceptable.
How does the differential pressure flow meter work?
First of all, we have to constrict the flow using a device that will create a pressure drop. There are many ways to create a pressure drop but in order to easily visualize this, we can start with introducing the orifice plate. When it comes to fluid piping, an orifice plate is a common device. The orifice plate is literally shaped like a plate (that you would eat food off) except that it has a hole in the middle. This hole is a constriction for the flow. The pressure transmitters pick up/measure pressure at P1 and P2 which are pressures measured before and after the restriction. The greater the differential pressure, the greater the flow velocity.
Once the differential pressure data is available, a calculation based on Bernoulli’s mathematical principles can be applied. The differential pressure is actually proportional to the square of the flow velocity. There are many other ways to create a pressure drop in order to measure flow . Good examples are venturi tubes, pitot probes, laminar flow elements and various wedges and nozzles.
