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China, Chinese 100% Original E+H Deltabar Pmd55 Differential Pressure Transmitter with Good Price1 Industrial Products Supplier Manufacturer Details, price list catalog:
China Industrial Products Supplier Manufacturer List Catalog
TransmitterDifferential Pressure TransmitterTransmitterE+H Transmitter
Kerui (Weifang) Automation Equipment Co., Ltd.
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Product DescriptionProduct DescriptionEndress+Hauser Deltabar PMD55 Differential Pressure TransmitterIn the realm of industrial process control and measurement, accurate and reliable pressure measurement is of utmost importance. The Endress+Hauser Deltabar PMD55 differential pressure transmitter has emerged as a leading solution in this domain. Designed to meet the diverse needs of various industries, from process manufacturing to environmental applications, the PMD55 offers a blend of advanced technology, high precision, and robust construction. This detailed exploration will cover all aspects of the Deltabar PMD55, including its technical specifications, working principles, applications, and benefits.The Deltabar PMD55 is highly versatile in terms of its measuring range. It can handle differential pressures ranging from as low as 0.5 mbar up to 40 bar (0.0072 to 600 psi). This wide span makes it suitable for a vast array of applications, whether it's measuring the minute pressure differences in a delicate filtration system or the more substantial pressure differentials in high - pressure industrial processes. The ability to cover such a broad range without sacrificing accuracy is a testament to the sophisticated engineering of the device.Accuracy is a critical parameter for any pressure measurement device, and the PMD55 does not disappoint. The standard accuracy of the transmitter is ±0.1%. However, for applications where even higher precision is required, an optional "platinum" version is available, offering an accuracy of ±0.075%. This high - level accuracy ensures that the measured data is reliable, enabling operators to make informed decisions about process control. Whether it's maintaining the correct flow rate in a chemical plant or accurately monitoring the Level in a storage tank, the PMD55's accuracy helps in optimizing processes and preventing costly errors.1. Working PrincipleThe Deltabar PMD55 utilizes a piezoresistive sensor and a welded metallic membrane for its operation. The measuring principle is based on the detection of the deformation of the measuring membrane caused by the differential pressure applied across it.1.1 Sensor OperationWhen differential pressure (ΔP) is applied to the transmitter, the pressure acts on the two sides of the measuring membrane. The higher pressure side causes the membrane to deflect towards the lower pressure side. This deflection is then detected by the piezoresistive sensor. The piezoresistive elements are typically made of semiconductor materials, and their electrical resistance changes in proportion to the mechanical stress applied to them. In the case of the PMD55, as the measuring membrane deflects, it exerts stress on the piezoresistive elements, which in turn causes a change in their resistance.1.2 Signal ProcessingThe change in resistance of the piezoresistive elements is then converted into an electrical signal. This signal is further processed by the transmitter's internal electronics. The electronics first amplify the weak signal from the sensor to a more suitable level for further processing. Then, it undergoes analog - to - digital conversion to convert the analog signal into a digital format. The digital signal is then processed using advanced algorithms to calculate the actual differential pressure value. These algorithms take into account factors such as temperature compensation, linearization, and calibration data stored in the transmitter's memory. 1.3 Overload ProtectionThe PMD55 is also equipped with an overload detection mechanism. In the event of excessive pressure being applied to the measuring cell, the overload detection membrane or intermediate membrane comes into play. This additional membrane is designed to protect the sensitive measuring membrane from being damaged by extreme pressures. When the applied pressure exceeds the rated limits, the overload detection membrane deforms in a way that prevents the measuring membrane from experiencing excessive stress. This ensures the long - term reliability and durability of the transmitter, even in applications where there may be occasional pressure surges.2. Applications2.1 Flow MeasurementOne of the primary applications of the Deltabar PMD55 is in the measurement of flow rate in gases, vapors, and liquids. In flow measurement applications, the PMD55 is used in conjunction with primary elements such as orifice plates, Venturi tubes, or flow nozzles. The primary element creates a pressure drop in the fluid flow, and the PMD55 measures this differential pressure. According to the Bernoulli's principle and other fluid flow equations, the differential pressure is related to the flow rate of the fluid. By accurately measuring the differential pressure, the flow rate (either volume flow or mass flow) can be calculated. 2.2 Liquid level measurementThe PMD55 is also extensively used for measuring the Liquid,volume, or mass of liquids in various containers. In a simple hydrostatic Liquid measurement application, the differential pressure between the bottom and the top of the liquid column is measured. The pressure at the bottom of the liquid column is a function of the liquid height, density, and the acceleration due to gravity (P = ρgh, where P is the pressure, ρ is the liquid density, g is the acceleration due to gravity, and h is the liquid height). By measuring the differential pressure (ΔP) between the bottom and a reference point (usually the top of the liquid or a known pressure point), the Liquid height (h = ΔP / (ρg)) can be calculated. This principle is used in a wide range of industries, including water treatment plants, chemical storage facilities, and food and beverage manufacturing..2.3 Differential Pressure MonitoringAnother important application of the PMD55 is in differential pressure monitoring of various equipment, such as filters and pumps. In a filtration system, as the filter media accumulates dirt and particles over time, the pressure drop across the filter increases. By continuously monitoring the differential pressure across the filter using the PMD55, operators can determine when the filter needs to be cleaned or replaced. This helps in maintaining the efficiency of the filtration process and preventing damage to downstream equipment. Similarly, in a pump system, monitoring the differential pressure across the pump can provide valuable information about the pump's performance. SpecificationPower supply voltage4...20 mA HART 11.5...45 V DC (non-explosive proof): Ex ia: 11.5...30 V DC PROFIBUS PA: 9...32 V DC (non-explosive proof) FOUNDATION Fieldbus: 9...32 V DC (non-explosive proof)Reference measurement accuracy0.1%Platinum type: 0.075%Long-term stability0.05% URL/year 0.125% URL/5 yearsProcess temperature-40...85 °C (-40...185 °F)Ambient temperature-40...85 °C(-40...185 °F)Sensor10mbar...40bar(0.15...580psi)Minimum measurable range10 mbar (0.145 psi), absolute/gauge pressureMaximum range ratio20:1Company Profileabout usMain productKeRui (WeiFang) Automation Equipment Co., Ltd. is specialized in industrialautomation instrument development, production and sales, technical servicesand supporting equipment supply of specialized companies. The mainproducts are fow meters, level meters, temperature meters, pressuremeters, electrical meters, thermal meters, programmable controller(PLC),Dcs distributed control system, eight series of more than 1,000specifcations. lts products and technologies are widely used in electricpower, metallurgy, petrochemical, environ- mental protection, plasticsfood,l printing, tobacco, textile, dyeing and other fields.Valve Positioner: A valve positioner is a crucial control device that precisely regulates the position of control valves in industrial processes. It receives control signals from a controller and compares them with the actual valve position.Flowmeter: A flowmeter is an instrument designed to measure the flow rate of liquids, gases, or steam within a pipeline or channel. Transmitter: A transmitter is a device that senses a physical parameter, like pressure, temperature, or level, and converts it into a standardized output signal, usually 4 - 20 mA DC or digital signals. CertificationsOur ServiceOEM / ODM servicesTo meet the user diversified requirement, Holykell have established a set of customer service and technical support system with OEM / ODM order as the center, and responded and Handle the customer's requirements in a timely manner to ensure accurate delivery time and product quality.Order servicesFastest reply:Professional sales engineers 7/24 online servicesPayment terms:T/T ,Western union, Paypal, Credit Card, L/C othersFast delivery: within 24 hours release the cargo (normal spec.), Customized 7-12 days after payment . MAINTENANCE & AFTER-SALES SERVICESCustomer Feedback: Sales engineers and technical engineers will be one-on-one service for you to exclude all obstacles when use our sensors.Warranty period: 12 monthsProduct life-long maintenance: Holykell can provide you with the maintenance of the whole life of the sensorsPackaging & ShippingFAQQ1: How long will it take you to give me the reply?A: We will reply to you as soon as we see the informationQ2: What is the delivery time?A: Our delivery time is within 3- 7 days after we get your payment; for large qty mass orders, the time should be confirmed again for youQ3: How about your package? A: Do not worry about the package. We have a lot of experience in packing, and all our packages are wooden case packages.Q4: How about the payment terms?A: You can choose T/T.Q5: Do you provide samples? A: Yes, we have materials in stock to help you get the samples as soon as we can.Q6: What is the MOQ?A:1PC.Q7: Can I get a lower price if I order large quantities? A: Yes, cheaper prices with larger orders.Q8: Why choose us?We have a perfect customization, not only to provide you with quality products, but also to have a professional customer service team available at any time to provide you with support. We pay more attention to establishing a long-term cooperative relationship with you to achieve continuous business growth.Q9: How can we guarantee quality?We have strict requirements on the quality of our products, and we will conduct a final inspection of our products when we ship them.
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