Original Rosemount CD3a Pressure Sensor Transducer Transmitter for Industrial

• Customization: Available
• Type: Differential Pressure Transmitter
• Structure Type: Capacitive Pressure Transmitter
• Model NO.: CD3A
• Measuring Medium: Gas
• Accuracy Grade: ±0.075% of Span
• Pressure range: 0.03 Kpa to 4 MPa
• IP Rating: IP67
• Certification: CE
• Customized: Customized
• Warranty: 1 Year
• Brand: Rosemount
• Source Area: USA
• Power Supply: 10.5–45 V DC
• Protection Rating: IP67
• Operating Temperature: -40°c to 85°c
• Communication Protocol: Hart 7/5, Brain, FF Fieldbus
• Certifications: CE, Iecex, ATEX, Sil 2/3 Compliance
• Material: Stainless Steel, Aluminum Alloy Housing
• Process Connection: 1/2" NPT, 1/4" NPT
• Accuracy: ±0.075% of Span
• Industry Applications: Oil & Gas, Chemical, Power Plant, Water Treatment
• Response Time: <100 Ms
• Stability: ±0.1%
• Safety: Sil 2/3
• Transport Package: with Carton Package
• Specification: 30X30X30 cm
• Trademark: Rosemount
• Origin: USA
• HS Code: 9026201090
• Production Capacity: 50000

Product Description

 

Product Description

 

In the complex and demanding landscape of industrial processes, accurate pressure measurement is the linchpin for ensuring optimal performance, safety, and efficiency. The Rosemount CD3A Pressure Sensor Transducer Transmitter, a product of Emerson's renowned Rosemount series, has emerged as a reliable and high - performing solution in this domain. Engineered with state - of - the - art technology and a deep understanding of industrial requirements, the CD3A is designed to meet the challenges of a wide range of applications, from the most basic pressure monitoring tasks to the most complex and critical process control scenarios.

 

Design Philosophy

The CD3A transmitter takes this change in resistance and converts it into an electrical signal that can be easily measured and processed. A Wheatstone bridge configuration is commonly used within the sensor to convert the resistance change into a voltage output. When pressure is applied and the resistance of the sensing element in the Wheatstone bridge changes, an unbalanced voltage is produced across the bridge. This unbalanced voltage is then amplified and conditioned by the transmitter electronics. The transmitter further processes this signal to output a standardized analog or digital signal, which is proportional to the measured pressure. For example, in a typical industrial setup, the CD3A might output a 4 - 20 mA analog current signal, where 4 mA represents the minimum pressure in the calibrated range and 20 mA represents the maximum pressure. This output signal can be easily integrated into various control systems, such as Programmable Logic Controllers (PLCs) or Distributed Control Systems (DCSs), for further analysis and process control.

 

Ease of Installation and Maintenance

The Rosemount CD3A is designed with the user in mind, featuring a user - friendly interface and easy - to - follow installation procedures. The transmitter is equipped with a local operator interface that allows for quick and convenient configuration and calibration. The LOI typically has a simple menu - driven system with clear instructions, enabling operators to make adjustments without the need for extensive technical knowledge. In addition, the CD3A comes with detailed installation manuals and wiring diagrams, which guide installers through the process step - by - step. The modular design of the transmitter also simplifies maintenance, as individual components can be easily replaced if necessary.

Chemical Industry

In chemical manufacturing processes, reactors are used to carry out various chemical reactions. Precise control of the pressure inside the reactors is essential to ensure the safety of the process and the quality of the products. The Rosemount CD3A is used to measure the pressure inside the reactors and provide feedback to the control system. By maintaining the pressure within the specified range, operators can optimize the reaction conditions, prevent over - pressure situations that could lead to explosions or leaks, and ensure consistent product quality. For example, in a polymerization reaction, the pressure must be carefully controlled to obtain polymers with the desired molecular weight and properties. The CD3A's high - accuracy pressure measurement and reliable operation are critical for this type of application.

 

Product Parameters

Category	Parameter	Specification
General	Model	CD3A
	Type	Differential Pressure (DP) Transmitter
	Measurement Principle	Piezoresistive sensor
Performance	Pressure Range	0.03 kPa to 4 MPa
	Accuracy	±0.075% of span (best fit straight line)
	Stability	±0.1% of URL per year
	Response Time	<100 ms (adjustable damping)
Process Connections	Pressure Ports	1/4" NPT female (standard) Optional: 1/2" NPT, flanged
	Wetted Materials	316L SS (standard) Optional: Hastelloy C-276, Monel
Electrical	Power Supply	10.5-45 V DC (loop powered)
	Output Signal	4-20 mA HART (2-wire) Optional: Foundation Fieldbus
	Communication	HART 7 protocol
Environmental	Ambient Temperature	-40°C to 85°C (-40°F to 185°F)
	Process Temperature	-40°C to 120°C (-40°F to 248°F)
	Storage Temperature	-50°C to 100°C (-58°F to 212°F)
	Protection Rating	IP67 (NEMA 4X)
Certifications	Safety	SIL 2/3 (IEC 61508)
	Explosion Protection	ATEX/IECEx: Ex ia IIC T4-T6 FM/CSA: Class I Div 1
	Industry Standards	NEPSI, CE, PED
Mechanical	Weight	2.3 kg (5.1 lb) with brackets
	Mounting	Pipe, wall, or panel mount
Advanced Features	Diagnostics	Continuous self-diagnostics
	Configuration	Local LCD display with pushbuttons Remote via HART communicator

 

Company Profile

 

 

Company profile
 

Welcome to KeRui (Weifang) Automation Equipment Co., Ltd., your esteemed partner in pioneering industrial automation solutions. With a steadfast commitment to excellence, we specialize in the development, production, and distribution of cutting-edge industrial automation instruments. Our extensive portfolio caters to a diverse array of industries, delivering unparalleled precision and reliability.
At KeRui (Weifang), we take pride in offering a comprehensive range of products and bespoke technical services tailored to exceed the unique demands of our esteemed clientele. From state-of-the-art flow instruments to precise liquid level gauges, advanced temperature sensors, and robust pressure measurement devices, our offerings epitomize innovation and technological superiority.
Our expertise extends to electrical instruments, thermal intelligent systems, and sophisticated programmable logic controllers (PLC) alongside DCS distributed control systems, setting benchmarks in efficiency and performance across various sectors. Industries ranging from electric power and metallurgy to petrochemicals, environmental protection, plastics, food processing, and textiles benefit from our advanced solutions.
In fostering strategic alliances with esteemed brands such as Rosemount, Honeywell, Yokogawa, A-BB, and Siemens, we ensure the delivery of premium-grade products and pioneering solutions that uphold the highest industry standards.
Thank you for choosing KeRui (Weifang) Automation Equipment Co., Ltd. We eagerly anticipate the opportunity to elevate your operations with our unrivaled solutions and unwavering dedication to excellence.

 

Our Advantages

 

Company Achievements

KeRui (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 2008
2. 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 Plant
3. Awarded "Outstanding Supplier by Yaxing Group in 2013
4.200 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 2019
7.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.

FAQ

Q1: How long will it take you to give me the reply?
A: We will reply to you as soon as we see the information

Q2: 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 you

Q3: 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.