Gas Roots Flowmeter with Aluminum Construction and Dual Output Types

• 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 premier gas monitoring and measuring instrument celebrated for its exceptional accuracy, reliability, and extensive range, setting new industry standards.
The Intelligent Gas Roots Flowmeter represents the next generation of flow measurement technology, seamlessly integrating flow, temperature, and pressure sensors with advanced intelligent instrumentation. This cutting-edge device is the quintessential solution for measuring a variety of non-corrosive gases, including natural gas, city gas, propane, nitrogen, and industrial inert gases, offering unmatched precision and dependability.

CHARACTERISTIC

1. Wide Range:
Depending on the specific model, it boasts an impressive maximum range capability of 1:216, coupled with a low starting flow.
2. With varying specifications, it achieves an exceptionally low starting flow of just 0.04m3/h.
3. High Precision and Repeatability:
The long-term accuracy remains unaffected by the medium, ensuring stability and precision throughout its extensive operational lifespan.
Minimal Pressure Loss:
4. Pressure loss, dependent on specifications, ranges from a mere 0.08kPa to 0.58kPa. The device showcases high integration and low power consumption, utilizing advanced microcomputer technology and high-performance integrated chips to deliver robust performance.
Compact Structure:
5. The design features built-in pressure, temperature, and flow sensors for a more streamlined and compact structure. Digital pressure and temperature sensors enhance functionality.
6. Equipped with digital temperature and pressure sensors, the device allows for separate calibration and verification, simplifying replacement, maintenance, and operation.

7. Sectional Correction:
By analyzing the flow frequency signal, the instrument coefficient can be segmented into nine sections for automatic linear correction, significantly enhancing wide range accuracy.
8. Comprehensive Data Storage Capabilities:
Incorporating an E2PROM data storage chip, it safeguards user and manufacturer parameters. Its timely data saving function prevents data loss during sudden power failures, ensuring permanent retention of internal parameters even in power-off scenarios.
9. Complete Output Suite:
The intelligent flow meter offers a comprehensive range of outputs, including base meter pulse, working or standard condition pulse signal, and calibration pulse output. It can also provide a 4~20mA analog signal and RS485 communication to meet user requirements, facilitating effective data traceability management.
10. Real-time database access and analysis are enabled through the RS-485 communication interface.
GPRS Real-time Management System
11. Featuring GPRS transmission, the B-type meter in this series facilitates online, scheduled, and fixed-point data transmission. It enables real-time monitoring of instrument data, valve control, pipeline pressure, gas alarms, and more, simplifying the creation of a GPRS wireless network system.

PRINCIPLE

The intelligent gas Roots flowmeter is expertly constructed with a housing, a conjugate rotor, and an intelligent flow integrator. Precisely machined calibration gears maintain the correct relative rotor positions, driven by the pressure differential between the inlet and outlet (P_in > P_out). Optimal working clearances between components allow for continuous non-contact sealing, ensuring four times the effective volume of the metering chamber is output with each full 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 array of certifications is a resounding testament to the unwavering strength and reliability of Jiangsu Hualiu Instrument Co., Ltd. In the year 2019, we had the esteemed honor of being recognized with the prestigious 'National High-tech Enterprise' status. Fast forward to 2023, and we have proudly secured the 'Special Equipment Manufacturing Production License.' Our impressive suite of certifications includes the ISO Quality, Environmental, and Employee Safety System Certifications, the Product Measuring Apparatus Type Approval Certificate, and Explosion-proof and Intrinsically Safe Certificates across our entire product suite. Moreover, we proudly possess the SIL Safety Certificate, the renowned CE Certificate, and both Invention and Utility Model Patent Certificates, making our commitment to excellence indisputable.

FAQ

Q: How do I select the perfect flow meter for my specific application needs?
A: Delve into these essential considerations:
Examine the fluid type: Is it a liquid, gas, or steam?
Identify the required range of flow rate suitable for your system.
Consider the pipe size and the material from which it is constructed.
Analyze the temperature and pressure conditions within your operating system.
Determine the degree of precision you need, whether it be ±0.5% or ±1%.

Q: Where can I access the installation guidelines for optimal setup?
A: Effortlessly download our comprehensive PDF manual, or feel free to contact us for tailored, personalized assistance.

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

Q: Are your flow meters certified with CE and ISO9001?
A: Indeed, our flow meters are meticulously crafted to comply with the rigorous laws and standards of the European Union (EU), fulfilling all EU requirements for safety, health, and environmental protection. Our management system is both scientific and standardized, ensuring globally recognized quality and safety.

Q: What export documentation do you provide to facilitate international transactions?
A: We offer a comprehensive export package, including a Commercial Invoice, Packing List, Bill of Lading, COC, and more, ensuring your international transactions are seamless and hassle-free.

Q: What is the process for placing an order with you?
A: Simply reach out to us via email or phone to receive a detailed quote, and then finalize your order by providing a purchase order (PO).