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China, Chinese 100% Original New E+H Deltabar Pmd50 Differential Pressure Transmitter1 Industrial Products Supplier Manufacturer Details, price list catalog:
China Industrial Products Supplier Manufacturer List Catalog
TransmitterDifferential Pressure TransmitterTransmitterPressure Transmitter
Kerui (Weifang) Automation Equipment Co., Ltd.
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Product DescriptionProduct DescriptionE+H PMD50 Differential Pressure TransmitterIn the intricate network of industrial process control, pressure measurement—especially differential pressure (DP) measurement—serves as a vital link between process stability, operational efficiency, and safety compliance. Differential pressure, defined as the difference in pressure between two points in a system, is a critical parameter for monitoring and controlling a wide range of industrial processes, including flow measurement (via orifice plates, Venturi tubes, and flow nozzles), level measurement of closed tanks, and filter or valve clogging detection. As industries such as oil and gas, chemical processing, power generation, and water treatment continue to demand higher accuracy, reliability, and adaptability in measurement devices, the role of advanced differential pressure transmitters becomes increasingly indispensable.Endress+Hauser, a global pioneer in measurement and automation solutions with over 70 years of expertise, has engineered the E+H PMD50 Differential Pressure Transmitter to meet these evolving industrial needs. Designed as a versatile, high-performance device, the PMD50 combines cutting-edge sensor technology, robust mechanical design, and intelligent software features to deliver precise, consistent differential pressure measurements even in harsh and demanding operating environments. Unlike conventional DP transmitters that may struggle with drift, temperature sensitivity, or limited connectivity, the PMD50 is built to address these pain points—offering long-term stability, wide environmental adaptability, and seamless integration with modern control systems.1. Working Principle of the E+H PMD50 Differential Pressure Transmitter1.1 Basic Concept of Differential Pressure MeasurementDifferential pressure (DP) measurement involves quantifying the pressure difference between two distinct points in a fluid system—referred to as the "high-pressure side" (HP) and the "low-pressure side" (LP). This measurement is critical because it indirectly reflects other key process parameters: for example, when paired with a primary flow element (e.g., an orifice plate), DP correlates with fluid flow rate (per Bernoulli's principle); when applied to closed tanks, DP indicates liquid level (based on hydrostatic pressure); and when monitoring filters, an increase in DP signals clogging (as pressure drop across the filter rises).Conventional DP measurement devices often rely on mechanical mechanisms (e.g., diaphragms or bellows) to convert pressure differences into physical displacement, which is then translated into an electrical signal. However, these mechanical systems are prone to wear, drift, and sensitivity to temperature changes—limiting accuracy and long-term reliability. Modern DP transmitters, including the E+H PMD50, leverage solid-state sensor technology to overcome these limitations, offering higher precision, faster response times, and reduced maintenance needs.1.2 Working Mechanism of the E+H PMD50The E+H PMD50 employs a capacitive ceramic sensor—a technology renowned for its stability, resistance to harsh fluids, and high accuracy—to measure differential pressure. This sensor design eliminates many of the drawbacks of mechanical systems, ensuring consistent performance even in extreme temperatures, corrosive environments, or high-vibration settings. Below is a detailed breakdown of the PMD50's working mechanism:Signal Conversion and Processing: The capacitive change is converted into a low-level electrical signal (typically a voltage or current) by the PMD50's analog front-end circuitry. This signal is then sent to a high-performance digital signal processor (DSP), which applies calibration algorithms, temperature compensation, and linearization to eliminate errors caused by environmental factors (e.g., temperature fluctuations, vibration) or sensor non-linearity. The DSP also filters out electrical noise to ensure a stable, reliable output.2. Technical Specifications of the E+H PMD50 Differential Pressure Transmitter2.1 Measuring Range and AccuracyDifferential Pressure (ΔP) Range: The PMD50 offers exceptional flexibility in measuring ranges, catering to both low and high differential pressure applications. The measurable ΔP spans from as low as 0–10 mbar (0–1 kPa) for precision applications (e.g., laboratory processes, low-flow measurement) to as high as 0–100 bar (0–10,000 kPa) for high-pressure industrial processes (e.g., oil and gas pipelines, power generation). Custom ranges are also available to meet specific application needs.Overpressure Resistance: A critical specification for safety and durability, the PMD50's overpressure resistance (the maximum pressure that can be applied to either HP or LP port without damaging the sensor) varies by model. 2.2 Fluid CompatibilityThe PMD50 is designed to handle a wide range of fluids, including liquids, gases, and vapors, with compatibility determined by the choice of process wetted materials:Fluid Temperature Range: The PMD50 can measure differential pressure for fluids with temperatures ranging from -40°C to +150°C (standard configuration). For high-temperature applications (up to +250°C), a specialized high-temperature model with a cooled sensor housing is available.Fluid Viscosity and Contaminants: The PMD50's ceramic diaphragm is resistant to fouling by viscous fluids (e.g., heavy oils, lubricants) and can tolerate small amounts of solid contaminants (≤ 50 μm) without clogging. For applications with high levels of particulates (e.g., wastewater treatment, mining slurries), optional inline filters or flush-mounted process connections are recommended to protect the sensor.2.3 Operating Environmental ConditionsThe PMD50 is engineered to withstand harsh industrial environments, with specifications reflecting its robustness:Ambient Temperature Range: The transmitter operates reliably in ambient temperatures from -40°C to +85°C, making it suitable for both indoor (e.g., chemical plant control rooms) and outdoor (e.g., oil refinery yards, offshore platforms) installations.Relative Humidity: The PMD50 tolerates relative humidity levels from 0% to 100% (non-condensing), with optional IP68 ingress protection (for submersion up to 1 m for 24 hours) for wet environments such as wastewater treatment plants or coastal facilities.SpecificationPower supply voltageEx d, Ex e, non-Ex:10.5...35V DCEx i: 10.5...30V DCLong-term stability0.1 % of URL/ year0.2 % of URL/ 5 years0.25 % of URL/ 10 yearsProcess temperature-40°C...+110°C(-40°F...+230°F)Ambient temperature-40°C...+85°C(-40°F...+185°F)Sensor100 mbar...40 bar(1.45 psi...580 psi)Minimum measurable range0.3 mbar (0.0043 psi)Anti-vacuum pressure25 mbar (0.0375 psi)Maximum range ratio20:1Company ProfileKeRui (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.Our 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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