Measurement and Settlement of DN40mm Rotary High-Precision Gas Trade on-Site Display Roots Gas Flowmeter

• Customization: Available
• After-sales Service: yes
• Warranty: yes
• Model NO.: SRG Rotary Gas Flowmeter
• Accuracy: ±0.6-1%
• Main Application: Water, Wastewater, Diesel Fuel, Fuel Oil, Nature Gas, Corrosive Liquid/Gas
• Size: DN50-100
• Sensor: Tube/Flange
• Application: Industrial Production
• Type: Turbine Flow Meter
• Measuring Media: Gas
• Measuring Principle: Measure Flow Rate
• Measurement Object: Closed Pipeline
• Certification: JIS, DIN, ANS, GB, CE, RoHS, ISO
• Color: Silver,Can Make Other Color
• Power Supply: 24VDC/3vbattery
• Output Signal: 4-20mA/Pulse/RS485
• Model Number: DN25~DN300
• Temperature: -20ºC~+60ºC
• Transport Package: Cartons and Wooden Box
• Specification: customized
• Trademark: STARSE
• Origin: Shanghai, China
• HS Code: 9026801000
• Production Capacity: 2000 Set/Sets Per Month
• Package Size: 55.00cm * 55.00cm * 55.00cm
• Package Gross Weight: 30.000kg

Product Description

Product Description

A new-generation flowmeter integrating flow, temperature, and pressure measurement with automatic T&P compensation.

Triple Detection: Simultaneously measures gas flow, temperature, and pressure.
Automatic Compensation: Converts operating volume to standardized volume at base conditions (101.325 kPa, 20°C).
Precision Correction: Compensates for gas compressibility and thermal expansion.

Technical Significance
Solves metering discrepancies in compressible fluids under varying T&P ;
Ensures fair trade settlement via standardized volume calculation.

Industrial Applications
Ideal for custody transfer in:
✓ Oil & Gas ✓ Chemical ✓ Power Generation ✓ Metallurgy

Working Principle

1. Structure of Rotary Flowmeter Within the flowmeter housing lies a metering chamber containing one or two pairs of tangentially rotating lobed rotors. Externally mounted on the housing, a pair of intermeshing drive gears are coaxially connected to the rotors, enabling synchronized counter-rotation.

2. Operating Principle (Positive Displacement)

Driven by the pressure differential between inlet and outlet:
Lobed rotors (precisely synchronized by gears) rotate in opposite directions.
Sequentially form sealed chambers between rotors, housing, and end covers.
Gas is periodically: Trapped in expanding chambers (intake phase); Displaced through contracting chambers (exhaust phase).
Volume flow is calculated by counting rotor revolutions.
 

Product Parameters

Model	Flow specification	Nominal diameter(mm)	Nominal Pressure(MPa)	Start-up Flow(m³/h)	Flow Range(m³/h)	Accuracy Class
SRG-10	G6	PT 1/2	1.6	0.04	0.5-10	Class 1.0  Class 1.5
SRG-16	G10	15		0.04	0.5-16
SRG-20	G16	25		0.05	0.5-25
SRG-40	G25	40		0.05	0.4-40
SRG-65	G40	50		0.06	0.65-65
SRG-80	G65	50		0.06	0.8-80
SRG-100	G65	50/80		0.08	0.625-100
SRG-150	G100	80		0.1	1-160
SRG-200	G160	80		0.1	2.5-250
SRG-300	G160	100		0.12	3-300
SRG-450	G250	100		0.15	2.5-400
SRG-650	G400	100/150		0.65	4-650
SRG-1000	G650	150		0.65	13.3-1000
SRG-1600	G1000	200		1.05	32-1600