New and Original Rosemount 644 Temperature Transmitter Lightning Protection Terminal

• Customization: Available
• Type: DIN-Rail Mounted SPD
• Material: Copper
• Model NO.: 21B4037X012
• Application: Conduct Electricity, Transmission of Electrical Signals
• Character: Environmental Protection
• Species: Terminal
• Production Process: Ceramic
• Shape: Square
• Interface Type: HDR
• Certification: BS, UL, VDE
• Brand: Rosemount
• Original: USA
• Compatibility: Rosemount 3144/644 Temperature Transmitters
• Standard: IEC 61000-4-5
• Surge Current: 20ka
• Voltage Protection Level: <50V
• Response Time: <1ns
• Max. Continuous Voltage: 30V DC
• Nominal Current: 100mA
• Connection: Screw Terminal
• Mounting: DIN-Rail
• Housing Material: Flame-Retardant PBT
• Operating Temperature: -40°c to +85°c
• Protection Rating: IP20
• Safety: CE, UL 1449 4th ED.
• EMC: En 61326-1
• Transport Package: with Carton Package
• Specification: 15X15X15 cm
• Trademark: Rosemount
• Origin: USA
• HS Code: 8479909090
• Production Capacity: 2000
• Package Size: 15.00cm * 15.00cm * 15.00cm
• Package Gross Weight: 1.000kg

Product Description

Product Overview 

In regions where lightning strikes are frequent, such as the summer - time in Maoming, equipment like the Rosemount 644 Temperature Transmitter, which is often installed at elevated field positions, is highly vulnerable to lightning strikes. The consequences can range from measurement data fluctuations to severe equipment damage, significantly threatening the safe operation of industrial plants. To address this issue, a specialized lightning protection terminal for the Rosemount 644 Temperature Transmitter has been developed.

Specification

 Description

The lightning protection terminal is equipped with advanced surge - suppression components. It can rapidly detect and divert the high - voltage surges induced by lightning strikes. For instance, when a lightning strike occurs nearby, the terminal's surge - suppression elements can respond within microseconds. By shunting the excessive electrical current to the ground, it protects the Rosemount 644 Temperature Transmitter from the high - voltage transients. This ensures that the delicate internal electronics of the temperature transmitter, which are designed to handle normal operating voltages for accurate temperature measurement, are not damaged by the sudden influx of high - voltage lightning - related surges.

The installation of the lightning protection terminal is relatively straightforward. For the Rosemount 644 Temperature Transmitter, which may be installed in different configurations such as in a wiring box or directly on a DIN rail, the terminal can be installed following a few simple steps. First, the power to the transmitter should be turned off to ensure safety. 

During normal operation, the lightning protection terminal has minimal impact on the signal transmission of the Rosemount 644 Temperature Transmitter. It allows the 4 - 20 mA/HART or full - digital Foundation Fieldbus signal to pass through without distortion, ensuring accurate temperature measurement and communication. However, when a lightning - induced voltage surge occurs, the terminal's surge - suppression components immediately activate. They limit the voltage across the Rosemount 644 to a safe level, protecting the transmitter from damage. Once the surge has passed, the terminal returns to its normal state, ready to respond to any future surges.

Technical Specifications

Category	Specification
General
Model	Rosemount 644 Surge Protector
Type	DIN-Rail Mounted SPD (Surge Protective Device)
Compatibility	Rosemount 3144/644 Temperature Transmitters
Protection
Standard	IEC 61000-4-5 (Surge), IEC 61643-21
Surge Current	20kA (8/20μs waveform)
Voltage Protection Level	<50V (signal lines)
Response Time	<1ns
Electrical
Max. Continuous Voltage	30V DC
Nominal Current	100mA
Connection	Screw Terminal (0.2-2.5mm²)
Mechanical
Mounting	DIN-RAIL (35mm)
Housing Material	Flame-Retardant PBT
Environmental
Operating Temperature	-40°C to +85°C
Protection Rating	IP20 (Indoor Use)

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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.

Company Profile

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: In which regions does KeRui primarily operate and sell its products?

A:We primarily sell our products to South Asia (40.00%) , the Middle East (40.00%) , and Southeast Asia (10.00%). Additionally, we have a presence in South America, Southern Europe, Northern Europe, Central America, Western Europe, Eastern Asia, North America, Oceania, Africa, and Eastern Europe.

 

Q2:What types of industrial automation instruments does KeRui specialize in?

A:KeRui specializes in industrial automation instruments such as flow meters, liquid level instruments, temperature sensors, pressure transmitters, electrical instruments, PLCs, and DCS systems.

 

Q3: How does KeRui ensure the quality of its products?

A:We ensure top-notch quality through rigorous testing and adherence to industry standards . Each product undergoes thorough inspection before shipment to guarantee reliability and performance.

 

Q4: Why should customers choose KeRui over other suppliers of industrial automation instruments?

A: Our company specializes in pressure, absolute pressure, and differential pressure transmitters, temperature electrical instruments, and flowmeter radar level meters, providing accurate technical specifications and competitive pricing.

 

Q5: What are the accepted delivery terms for KeRui products?

A: We accept delivery terms including FOB (Free On Board) and CIF (Cost, Insurance, and Freight.

 

Q6: Which currencies does KeRui accept for payment?

A: We accept payments in USD (United States Dollar).

 

Q7:What are the accepted payment methods at KeRui?

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Q8:What languages does KeRui's team speak fluently?

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Q9:How does KeRui stay updated with the latest technological advancements in industrial automation?

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innovation.

 

Q10:Does KeRui offer customization services for its products?

A:Yes, we offer customization services to meet specific client requirements . Contact us to discuss your needs.