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China, Chinese 100% Original Rosemount 3051dp Differential Pressure Transmitter 4-20mA Hart1 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 DescriptionRosemount 3051DP Differential Pressure TransmitterIn the intricate ecosystem of industrial process control, differential pressure (DP) measurement serves as a cornerstone for monitoring, optimizing, and securing a wide array of operations. From regulating fluid flow in pipelines to monitoring liquid levels in storage tanks and ensuring filter efficiency in purification systems, accurate DP data is indispensable for maintaining process integrity, enhancing operational efficiency, and safeguarding personnel and equipment. Amidst the diverse range of DP measurement solutions available in the market, the Rosemount 3051DP Differential Pressure Transmitter, developed by Emerson Electric Co.—a global pioneer in industrial automation technologies—stands out as a paragon of precision, reliability, and versatility.Engineered to address the most demanding industrial environments, the Rosemount 3051DP has redefined industry standards for DP measurement since its inception. Its ability to deliver consistent performance across extreme temperatures, high-pressure conditions, and corrosive media has made it the preferred choice for engineers and operators in sectors such as oil and gas, chemical processing, power generation, water and wastewater treatment, and pharmaceuticals. This comprehensive guide aims to provide a detailed exploration of the Rosemount 3051DP, covering its design principles, core technologies, performance specifications, application scenarios, installation and maintenance protocols, and its transformative impact on modern industrial processes. By delving into the intricacies of this advanced instrument, we will uncover why it remains a trusted solution for critical DP measurement needs worldwide.1. Product Overview: Defining the Rosemount 3051DP's Core Functionality1.1 What is a Differential Pressure Transmitter?Before delving into the specifics of the Rosemount 3051DP, it is essential to understand the fundamental role of a differential pressure transmitter. A differential pressure transmitter is a device designed to measure the difference in pressure between two points (referred to as the "high side" and "low side") in a process system. TThe transmitter converts the measured DP into a standardized electrical signal—typically a 4-20 mA DC analog signal or a digital signal via industrial communication protocols—which is then transmitted to a central control system (e.g., a Distributed Control System, DCS, or Programmable Logic Controller, PLC). The control system uses this data to monitor process conditions, adjust control valves or pumps, and trigger alarms in the event of deviations from preset operating parameters. 1.2 The Rosemount 3051DP: Key Design PrinciplesThe Rosemount 3051DP is built on Emerson's decades-long expertise in process measurement and control, with a design philosophy centered on three core pillars: uncompromising accuracy, robust reliability, and user-centric usability. Accuracy as a Foundation: In industries where even minor measurement errors can lead to significant financial losses, product defects, or safety hazards, the Rosemount 3051DP prioritizes accuracy. It incorporates advanced sensor technology and sophisticated signal processing algorithms to minimize errors caused by temperature fluctuations, static pressure variations, and process noise. This commitment to accuracy ensures that the transmitter delivers consistent, trustworthy data even in dynamic process environments.Reliability in Harsh Conditions: Industrial processes often expose equipment to extreme conditions, including high temperatures, corrosive chemicals, vibration, and pressure spikes. The Rosemount 3051DP is engineered to withstand these challenges, with a rugged construction that uses high-quality materials (such as 316L stainless steel and Hastelloy C-276) for corrosion resistance and mechanical durability. Its hermetically sealed sensor module and robust housing protect internal components from moisture, dust, and contaminants, ensuring long-term operational reliability and minimizing downtime.2. Core Technology: How the Rosemount 3051DP Measures Differential Pressure2.1 The Capacitance-Based Sensor: The Heart of the Rosemount 3051DPThe Rosemount 3051DP relies on a capacitance-based sensor to measure differential pressure—a technology widely recognized for its high sensitivity, stability, and resistance to environmental interference. The capacitance-based sensor consists of three main components: a movable diaphragm, a fixed electrode (on the high-pressure side), and a reference electrode (on the low-pressure side). The diaphragm is a thin, flexible membrane made from a corrosion-resistant material (such as Hastelloy C-276 or 316L stainless steel) that is positioned between the high-side and low-side process connections. When differential pressure is applied, the diaphragm deflects toward the side with lower pressure. The sensor's capacitance change is measured by the transmitter's electronic circuitry, which converts this change into an electrical signal. 2.2 Signal Processing: Ensuring Accuracy and StabilityOnce the capacitance-based sensor converts the DP into an electrical signal, the Rosemount 3051DP's electronic module processes this signal to ensure optimal accuracy and stability. This signal processing chain involves several critical steps:Amplification: The weak electrical signal from the sensor is first amplified by a low-noise preamplifier. This amplification ensures that the signal is strong enough to be processed without introducing significant noise, which could degrade measurement accuracy.Analog-to-Digital Conversion (ADC): The amplified analog signal is then converted into a digital signal by a high-resolution ADC. Temperature Compensation: Industrial processes often experience wide temperature fluctuations, which can cause the sensor's diaphragm to expand or contract, leading to measurement errors.Static Pressure Compensation: Static pressure (the pressure exerted equally on both sides of the diaphragm) can also affect sensor performance. Linearity Correction: While the capacitance-based sensor is inherently linear, minor non-linearities can occur due to manufacturing tolerances. Output Generation: After error correction, the digital signal is converted back into a standardized analog signal (4-20 mA DC) for transmission to the control system. SpecificationStability±0.125% of maximum URL / 60 monthsPower supply impact±0.005% of range / voltMaximum range ratio100:1Operating Voltage10.5 to 45 V DCAmbient temperature-40°C to 85°C (-40°F to 185°F)Humidity0-100% relative humidityStorage temperature-50°C to 85°C (-58°F to 185°F)Response Time60 msCompany ProfileKeRui (Weifang) Automation Equipment Co. Ltd. Has maintained a cooperatve relationship with Rosemount for 15 years, and our purchase quantity has reached 20,000 units.We supplied the tuning fork level gauge to the Rosemount factory and have been well received by the Beijing factory. We have cooperated with Yokowaga and maintained a cooperative relationship for 8 years, and our purchase quality has reached 7000 units.The companies we have cooperated with:1. Awarded "Outstanding Supplier by Yanchang Petroleum in 20082. In December 2012, our company was awarded the "Excellent Equipment Service Award" for the expansion project of units 6 and 7 of the Guangdong Guohua Yuedaishan Power Plant3. Awarded "Outstanding Supplier by Yaxing Group in 20134.200 transmitters for Haihua Group's ethylene debottlenecking transformation project in 2015.5. In 2018, we were rewarded as a National Nuclear Power Instrumentation Industry Measurement and Testing Alliance member.6.160 transmitters and 20 electric autuators for the Shandong Laigang Yongfeng Steel expansion project in 20197.In 2022, Jinneng Chemical (Qingdao) Co., Led/ Jinneng 2x450,000 tons/ year high-performance polypropylene project (newly built) equipped 460 transmitters from our company.8. In 2022, Shandong Qinghe Chemical Technology Co., Ltd.s hydrogen peroxide method epoxy propane device and supporting hydrogen peroxide device expansion project used 253 pressure transmitters.9.In 2022, the Wanhua Chemical HTN project NPG installed 320 transmitters and 50 sets of valve positioners.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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