What to Look for in a Differential Pressure Transmitter Sensor
This article provides some guidelines on what to look for in a differential transmitter sensor, which is useful for monitoring the gas, liquid or vapor pressure. The first thing to remember is the difference between a pressure transmitter and a differential pressure sensor. Although the distinction is somewhat unclear in a number of issues, the transmitter is somewhat different from the sensor because it is provided with a circuit to communicate to a control panel or computer. Previously, it was much easier to differentiate the transmitter from the sensor because the former was much bigger in size compared to the latter. However, changes in the design and technological developments have caused the differential transmitter sensor to become smaller in size. pressure transmitter for sewage treatment
Meanwhile, the distinctions between the differential pressure transmitter sensor and the other kinds of pressure transducers have been eradicated further when the amplified voltage output pressure transducers became available. These new devices had signal strengths that are sufficiently strong to send their outputs much farther than the signal of the strain gauge output pressure transducer. On the other hand, the amplified voltage output pressure transducers have less power when they are compared to the pressure transmitters. Luckily, you may be able to know that a particular device is a pressure transmitter if it has a current loop output.
When looking for a differential transmitter, one of the things that have to be specified is the minimum voltage that is required. However, take note that if there is a load resistance, this will cause a reduction in the voltage across the pressure transmitter. You will need to determine the voltage drop across the load resistance and subtract this from the voltage that you get from your power source. On the other hand, it is also essential to make sure that the actual voltage applied across the pressure transmitter will not surpass the maximum allowable value to prevent damage to the device. Even a small overvoltage can cause certain parts of the transmitter to overheat and degrade its performance. pressure sensor for sewage treatment
When looking for a differential pressure transmitter sensor, it is essential to check the manufacturer’s technical data. With regards to the specified voltage, it is important to note that some manufacturers will indicate the voltage for the mains circuit while others will point out the needed voltage across the pressure transmitter itself. Other manufacturers will provide in their product data sheets a load diagram that will specify the allowable region of operation for a certain load and the voltage of the power source. Still another vital factor to look into when choosing your transmitter is the pressure reference. A common configuration is the vented gauge pressure transmitter, which permits the external atmospheric pressure to be applied on the negative side of the sensing diaphragm through vented hole or cable. Thus, the pressure measured is always in reference to the ambient air pressure. One example of a pressure transmitter is the Rosemont transmitter, which has been found to remain stable even after installation for five years.
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