Gas Roots Flowmeter with RS485 Output and Battery Power Option

• 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 stands as a pinnacle of precision and dependability in gas monitoring and measurement instruments, boasting unparalleled accuracy, steadfast reliability, and an extensive operational range.
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 perfectly suited for accurately measuring non-corrosive gases such as natural gas, city gas, propane, nitrogen, and various industrial inert gases.

CHARACTERISTIC

1. Wide Range:
With its diverse specifications, this flowmeter can achieve an impressive maximum range ratio of up to 1:216, ensuring low starting flow detection capabilities.
2. Exceptional Sensitivity:
3. Superior Precision and Repeatability:
Thanks to its robust design, the flowmeter maintains long-term accuracy unaffected by the medium, ensuring stable performance over extended operational periods.
Minimized Pressure Loss:
4. Leveraging advanced microcomputer technology and high-performance integrated chips, the flowmeter achieves a pressure loss ranging from 0.08kPa to 0.58kPa, while delivering high integration and low power consumption for exceptional performance.
Ingenious Compact Design:
5. The integration of pressure, temperature, and flow sensors within the device creates a marvelously compact structure. Digital sensors for pressure and temperature enhance precision.
6. Featuring separate calibration and verification for digital temperature and pressure sensors, this design facilitates effortless replacement, maintenance, and operation.

7. Advanced Sectional Correction:
By utilizing flow frequency signals, the instrument coefficient is automatically divided into nine sections for linear correction, significantly enhancing the instrument's wide-range accuracy.
8. Comprehensive Data Storage Capabilities:
Equipped with an E2PROM data storage chip, the flowmeter securely retains both user and manufacturer parameters. Its timely data-saving function ensures data integrity even during unexpected power failures, with permanent retention of internal parameters.
9. Robust Output Options:
The intelligent flow meter offers a suite of outputs including base meter pulse, working or standard condition pulse signals, calibration pulse output, and the flexibility to provide a 4~20mA analog signal and RS485 communication, meeting diverse user requirements. Efficient data traceability management is ensured.
10. RS-485 Communication Excellence:
GPRS-Enabled Real-Time Management System:
11. Featuring a GPRS transmission function, the B-type meter in this series enables seamless online, timed, and fixed-point data transmission, allowing for comprehensive monitoring of instrument data, valve control, pipeline pressure, gas alarms, and more, while simplifying the creation of a robust GPRS wireless network system.

PRINCIPLE

The intelligent gas Roots flowmeter is engineered with a housing, conjugate rotor, and intelligent flow integrator. The rotor pair is precision-calibrated to maintain optimal positioning via machined gears, driven by the pressure differential between the gas inlet and outlet (P_in > P_out). This configuration ensures continuous non-contact sealing, with each rotor rotation outputting four times the effective volume of the metering chamber.

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 impressive array of certifications is a true testament to our remarkable strength and unwavering reliability. In 2019, we were bestowed with the prestigious 'National High-tech Enterprise' accolade, marking a significant milestone in our journey. By 2023, we had proudly secured the coveted 'Special Equipment Manufacturing Production License,' further cementing our position as industry leaders. Our extensive and comprehensive list of certifications spans across multiple domains, including the ISO Quality, Environmental, and Employee Safety System Certifications, the Product Measuring Apparatus Type Approval Certificate, and the esteemed Explosion-proof and Intrinsically Safe Certificates that encompass all our product lines. Moreover, we hold the SIL Safety Certificate, the CE Certificate, as well as numerous Invention and Utility Model Patent Certificates, showcasing our commitment to innovation and excellence.

FAQ

Q: How can I ensure I select the perfect flow meter tailored for my unique application?
A: To make an informed decision, consider these pivotal factors that are crucial for optimal selection:
First, identify the type of fluid involved: whether it's a liquid, gas, or steam.
Determine the precise range of flow rate required for your specific application.
Take into account the pipe size and the material from which it is constructed.
Consider the temperature and pressure conditions present within the system.
Assess the degree of accuracy needed for your application, whether it's ±0.5% or ±1%.

Q: Where can I access detailed installation guidelines?
A: You can effortlessly download our comprehensive PDF manual or get in touch with us for tailored, personalized assistance.

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

Q: Are your flow meters certified with CE and ISO9001 standards?
A: Absolutely, our flow meters are meticulously crafted to adhere to the stringent regulations and standards set by the European Union (EU), thereby fulfilling the EU's rigorous requirements for safety, health, and environmental protection. Our management system is both scientific and standardized, ensuring internationally recognized quality and safety are consistently maintained.

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

Q: How do I go about placing an order?
A: Simply reach out to us via email or phone to receive a detailed quote tailored to your needs, and then solidify your order with a formal purchase order (PO).