Precision Gas Roots Flowmeter, Aluminum Alloy, 4-20mA Output

• 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

Gas Roots flowmeter is a kind of gas monitoring and measuring instrument with high accuracy, high reliability and wide range.
Intelligent gas Roots flowmeter is a new type of flowmeter that integrates flow, temperature, pressure sensors and intelligent instrumentation on the basis of Roots flowmeter.Intelligent gas Roots flowmeter gas is the ideal instrument for measuring non-corrosive gases such as natural gas, city gas, propane, nitrogen, industrial inert gases and so on.

CHARACTERISTIC

1. Wide range:
According to different specifications, the maximum range can reach 1:216 low starting flow:
2. According to different specifications, the minimum starting flow can reach 0.04m3/h.
3. High precision and repeatability:
The long-term accuracy is not affected by the medium, and the accuracy is stable during long-term operation.
Small pressure loss:
4. According to different specifications, the pressure loss is 0.08kPa-0.58kPa. High integration, low power consumption Using advanced microcomputer technology and high-performance integrated chips, the whole machine is powerful and has superior performance
Compact structure:
5. The pressure sensor, temperature sensor, and flow sensor are all built-in, making the structure more compact. Digital pressure and temperature sensor
6. The digital temperature sensor and digital pressure sensor are configured with separate calibration and verification, which makes replacement, maintenance, and use easy.

7. Sectional correction:
According to the flow frequency signal, the instrument coefficient can be divided into nine sections for automatic linear correction, improving the wide range accuracy of the instrument.
8. Complete data storage capabilities:
Adopt E2PROM data storage chip to save user parameters and manufacturer parameters. Timely data saving function can prevent data loss in case of a sudden power failure. In the power failure state, internal parameters can be permanently saved.
9.The basic output is complete:
The intelligent flow meter has base meter pulse output, working condition or standard condition pulse signal output, and calibration pulse output. It can also output a 4~20mA analog signal and RS485 communication according to user needs. Data traceability management
10. A real-time database can be queried and analyzed through an RS-485 communication interface.
GPRS real-time management system
11. In this series, the B-type meter has GPRS transmission function, which can realize online, timed, and fixed-point transmission, monitor the data of instruments, control valves, pipeline pressure, gas alarms, etc., and it is extremely easy to build a GPRS wireless network system.

PRINCIPLE

The intelligent gas Roots flowmeter is mainly composed of a housing, a conjugate rotor and an intelligent flow integrator, etc. A pair of conjugate rotors installed in the metering chamber are kept in the correct relative position through precisely machined calibration gears under the action of the pressure difference between the inlet and outlet of the flowing gas (P_in > P_out). The optimal working clearances are maintained between the rotors, between the rotors and the casing, and between the rotors and the side plates, achieving continuous non-contact sealing. For each full rotation of the rotor, four times the effective volume of the metering chamber of gas is output.

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 extensive array of certifications stands as a powerful testament to our unwavering strength and reliability. In the notable year of 2019, we were bestowed with the esteemed 'National High-tech Enterprise' status, marking our commitment to innovation and excellence. Fast forward to 2023, we proudly acquired the 'Special Equipment Manufacturing Production License,' further solidifying our position as industry leaders. Our comprehensive suite of certifications encompasses the ISO Quality, Environmental, and Employee Safety System Certifications. We also hold the Product Measuring Apparatus Type Approval Certificate, along with Explosion-proof and Intrinsically Safe Certificates across all product lines. Our products are backed by the SIL Safety Certificate, CE Certificate, and we proudly hold Invention and Utility Model Patent Certificates, ensuring our offerings are both cutting-edge and compliant with the highest standards.

FAQ

Q: How do I select the right flow meter for my application?
A: Carefully consider these pivotal factors to ensure optimal selection:
Identify the type of fluid: whether it is liquid, gas, or steam.
Determine the range of flow rate required for your specific needs.
Evaluate the pipe size and the material from which it is constructed.
Assess temperature and pressure conditions within your system environment.
Establish the degree of accuracy needed, choosing between ±0.5% or ±1%.

Q: Where can I find installation guidelines?
A: Effortlessly access our comprehensive PDF manual online or contact us directly for personalized assistance tailored to your needs.

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

Q: Are your flow meters CE and ISO9001 certified?
A: Absolutely, our flow meters strictly adhere to the stringent laws and standards set forth by the European Union (EU), fulfilling all requirements for safety, health, and environmental protection. Our management system is both scientific and standardized, ensuring internationally recognized quality and safety at every level.

Q: What documents do you provide for export?
A: We provide a comprehensive export package that includes a Commercial Invoice, Packing List, Bill of Lading, COC, and more, facilitating seamless and efficient international transactions.

Q: How do I place an order?
A: Simply reach out to us via email or phone for a detailed quote, and solidify your purchase by providing us with a purchase order (PO).