Gas Roots Flowmeter with Dual Output: RS485 and 4-20mA Signal

• Customization: Available
• Warranty: 15 Months
• Accuracy: 1.5%,1%
• Model NO.: HL-LLQ
• Main Application: Nature Gas
• Size: DN25-DN150
• Sensor: Tube/Flange
• Application: Energy Metering
• Type: Turbine Flow Meter
• Measuring Media: Gas
• Measuring Principle: Electrical Principles
• Measurement Object: Closed Pipeline
• Certification: CE, ISO
• Output Type: RS485, Pulse and 4-20mA
• Body Material: Aluminum Alloy
• Power Supply: 24VDC, 3.6VDC Battery
• Transport Package: Wooden Box Package or Carbon
• Trademark: HuaLiu
• Origin: China
• HS Code: 9026100000
• Production Capacity: 5000pieces/Year

Product Description

SUMMARY

Gas Roots Flowmeter

The Gas Roots Flowmeter is a sophisticated gas monitoring and measurement instrument that offers exceptional precision, reliability, and a broad operating range.
The Intelligent Gas Roots Flowmeter is an advanced design that seamlessly combines flow, temperature, and pressure sensors with smart instrumentation, based on the traditional Roots Flowmeter. This innovative device is perfect for accurately measuring non-corrosive gases including natural gas, city gas, propane, nitrogen, and various industrial inert gases.

CHARACTERISTIC

1. Wide Range:
Depending on the specifications, the maximum range can reach an impressive ratio of 1:216 with a low starting flow.
2. Versatile Performance:
3. High Precision and Consistency:
The flowmeter's long-term precision remains unaffected by the medium, ensuring stable accuracy over prolonged use.
Minimal Pressure Loss:
4. Depending on specifications, pressure loss ranges from 0.08kPa to 0.58kPa. Featuring high integration and low power consumption, the device utilizes cutting-edge microcomputer technology and high-performance integrated chips, delivering powerful and superior performance.
Compact Structure:
5. With built-in pressure, temperature, and flow sensors, the structure is remarkably compact. Digital pressure and temperature sensors enhance its capability.
6. The digital temperature and pressure sensors are equipped with individual calibration and verification, simplifying replacement, maintenance, and usage.

7. Sectional Correction:
By analyzing the flow frequency signal, the instrument coefficient is divided into nine sections for automatic linear correction, enhancing the instrument's wide range accuracy.
8. Comprehensive Data Storage:
Utilizes an E2PROM data storage chip to securely save user and manufacturer parameters. The timely data saving function guards against data loss during unexpected power outages, ensuring permanent storage of internal parameters even without power.
9. Comprehensive Output Options:
The intelligent flow meter provides base meter pulse output, along with working or standard condition pulse signal output, and calibration pulse output. It also offers a 4~20mA analog signal and RS485 communication as per user requirements, ensuring efficient data traceability management.
10. Real-time Data Management:
GPRS Real-time Management System
11. Within this series, the B-type meter is equipped with a GPRS transmission feature, enabling real-time, scheduled, and pinpoint data transmission. It monitors instrument data, controls valves, manages pipeline pressure, gas alarms, and more, facilitating the creation of a comprehensive GPRS wireless network system with ease.

PRINCIPLE

The advanced Intelligent Gas Roots Flowmeter consists of a durable housing, conjugate rotors, and an intelligent flow integrator. Conjugate rotors within the metering chamber maintain their precise relative positions through finely machined calibration gears, driven by the pressure difference between the gas inlet and outlet (P_in > P_out). Optimal working clearances between the rotors, casing, and side plates ensure continuous non-contact sealing, delivering four times the effective volume of gas per rotor rotation.

TECHNICAL PARAMETER

Nominal diameter(mm)	range ratio	Flow range(m³/h)	starting flow(m³/h)	Pressure loss Pa at Qmax	Maximum working pressure MPa	Nominal pressure MPa	material
25	20:1	1-20	0.07	110	0.4	1.6	aluminum cast iron
40	40:1	1-40	0.06	140
50	30:1	2-60	0.07	120
50	40:1	2-80	0.07	160
80	35:1	3-100	0.06	170
80	50:1	3-150	0.05	150
80	50:1	4-200	0.15	180	0.4 0.6
100	80:1	4-300	0.12	200
100	90:1	5-450	0.11	400
150	80:1	8-650	0.65	560
150	90:1	11-1100	0.8	600

Complete Qualifications

Fully Qualified

Our certifications are not just acknowledgments; they are a testament to our unwavering commitment to excellence and trustworthiness. In 2019, we proudly achieved the prestigious 'National High-tech Enterprise' status, a hallmark of innovation and technological prowess. By 2023, our dedication and expertise were further validated with the acquisition of the 'Special Equipment Manufacturing Production License.' Our robust and comprehensive list of certifications paints a picture of our dedication to unparalleled quality and safety. These include the ISO Quality, Environmental, and Employee Safety System Certifications, reflecting our adherence to global standards. We also possess the Product Measuring Apparatus Type Approval Certificate and hold esteemed Explosion-proof and Intrinsically Safe Certificates across our entire product suite. Adding to our credibility are the SIL Safety Certificate and the CE Certificate, complemented by Invention and Utility Model Patent Certificates, showcasing our commitment to innovation.

FAQ

Q: How do I select the ideal flow meter tailored for my specific application?
A: To make an informed decision, consider these crucial factors:
The type of fluid you will be measuring: Is it liquid, gas, or steam?
The range and variability of the flow rate you require.
The size of the pipe and the material from which it is crafted.
Temperature and pressure conditions prevalent within your system.
The precision level you demand, be it ±0.5% or ±1% accuracy.

Q: Where can I find detailed installation guidelines?
A: Effortlessly access our detailed PDF manual, or connect with us directly for tailored, expert assistance.

Q: What is the maximum pressure your flow meters are designed to withstand?
A: Our standard models are built to endure pressures up to 16 bar (232 psi), while our specialized high-pressure models are engineered to handle up to an impressive 100 bar (1450 psi).

Q: Do your flow meters hold CE and ISO9001 certifications?
A: Without a doubt, our flow meters are meticulously crafted to comply with the rigorous laws and standards of the European Union (EU), ensuring they meet the EU's stringent requirements for safety, health, and environmental protection. Our management system is both scientific and systematic, guaranteeing quality and safety that are internationally recognized.

Q: What documentation do you provide to facilitate export?
A: We provide a comprehensive export package that includes a Commercial Invoice, Packing List, Bill of Lading, COC, and additional documents, ensuring smooth and efficient international transactions.

Q: What steps do I need to take to place an order?
A: Contact us via email or phone to receive a detailed quote, then finalize your order with a purchase order (PO) to ensure a smooth transaction.