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Main Technical Features

Measuring principle	Ultrasonic time difference
Measuring medium	Natural gas, city gas (including coal gas), flare gas, flue gas, raw gas etc.,
Number of paths	One, Two or Three paths
Installation Type	Integrated or spilt type
Installation method of ultrasonic transducer	Single end wetted (1D,2D.3D), double end wetted
Measurement range	0.03-30m/s (the flow rate of flare gas is 0.03~120m/s, higher flow rate can be customized)
Resolution Rate	0.001m/s
Accuracy Class	1.0 Class((Pipe section apply))
Repeatability	Qt~Qmax:≤ 0.2%, 0.3%（Higher repeatability can be customized）
Measuring Bore	DN50 ~DN5000 (Larger bore optional)
Nominal pressure	PN16 Class150 Class300 Class600 (More pressure specifications available)
Transducer material	All metal ( 316 stainless steel, titanium alloy)
Converter (i.e. transmitter)	Aluminum alloy, 304,316 stainless steel, etc., (customizable)

Measurement Requirements

Medium Temperature	-40~80oC, -40~200oC, -163~200oC，(More special operating conditions can be customized)
Medium Pressure	Adapt to field pipe pressure
Ambient Temperature	-30-60oC, -45-70oC(optional)

Operating Requirements

Power Supply	24V DC, 220C AC(optional)
Power Consumption	≤15 W
Straight pipelines required for installation	Recommended upstream straight pipelines ≥10D~15D, Downstream straight pipelines≥5D((If the requirements cannot be met, please consult the manufacturer for final technical confirmation)

Signal, Communication and Other Functions

Analog input	2 channels 4-20 mA
Analog output	1 channels 4-20 mA(HART optional), 1 channel pulsing
communication interface	2 channels RS 485
communication protocol	Standard MODBUS Communication Protocol
Digital output	3 channels DO alarm output, 1 channel relay output
LCD display	It can display instantaneous flow, cumulative flow and real-time temperature and pressure measurement information of standard condition on site
data storage time	Historical data can be maintained for at least 2 years, alarm records can be maintained for at least 6 years
operation method	The operating parameters of the flowmeter are set by the software of the upper computer
diagnostic function	The flowmeter has the function of self-diagnosis, which can diagnose and alarm output the working and fault state of the instrument itself

Certification

Metering certification	Metering type approval certificate CPA certification
Ex Class	ExdIIBT6 Gb, ExdIICT6 Gb(optional)
IP Class	IP66(optional)

CL-3 Series Flow Range Reference Description

Note: most of the products are split type, flow rang e can refer to CL-2 flow rang e reference table, For coal gas, flue gas and other industrial process gas flow, the flow rate is usually calculated as 0.03~30m/s, for special working conditions such as flare gas The flow rate can be up to 120m/s , higher flow rate measurements can be customized.

CL-3 product is an on-line pipeline plug-in ultrasonic gas flow meter which can take on-line installation based on field pipeline design. According to the requirements of the user, the flow state of the gas medium and the diameter of the pipe, there are a variety of specifications, such as 1,2 and 3 paths, which can meet the accuracy requirements of 1, 1.5 and 2.0 class according to the number of paths.
It is suitable for the measurement and transformation of old city gas pipeline, flare gas in petrochemical industry, process control monitoring and measurement of blast furnace gas and converter gas in coking plant, refinery and other large industries, and it can also meet the environmental protection measurement and control requirements of other large-diameter pipeline for non-gas gases (such as flue gas, industrial exhaust gas).

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