I. Brief Introduction:

This photo introduces:Explosion-proof metallic tube float flow meterThe sensor in the photo features a vertical downward entry and upward exit design. The standard sensor material is 304 stainless steel (optional materials include 316, 316L, fluoro-lined, etc.). It is powered by 24VDC and outputs 4-20mA. Users can choose an explosion-proof grade of ExdIICT6 and options like HART protocol. The sensor structure can be selected from various types based on the actual site conditions.

Overview:

    Metal Tube Float Flowmeter(Metal Tube Rotameter) is a commonly used variable-area flow measurement instrument in industrial automation process control. It features compact size, wide measurement range, ease of use, and is capable of measuring the flow of liquids, gases, and steam, particularly suitable for low flow rate and low flow measurements. Over the years, the metal tube float flowmeter has gained widespread application in industries such as petrochemicals, steel, electricity, metallurgy, light industry, food, pharmaceuticals, and water treatment, thanks to its excellent performance, reliability, and favorable performance-to-cost ratio.

Flowmeter Type:

TF SeriesMetal Tube FloatThe flowmeter consists of a measuring tube (sensor) and an indicator (electronic converter). By selecting different types of measuring tubes and indicators, various whole units can be assembled to meet on-site requirements.

The TF series metal tube float flowmeters categorize the products into five types based on the direction of the fluid inlet and outlet: vertical type, horizontal type (including horizontal T-type and horizontal spring type), bottom inlet-side outlet type, side inlet-side outlet type, and side inlet-top outlet type. Each type further includes standard models, high-temperature models, jacketed models, and so on.

Horizontal Mount TypeFlowmeterFor diameters less than or equal to DN50, T-type structures should be used; for diameters greater than DN50, spring-type structures should be selected.

Flowmeter Connection Specifications: The standard TF series metal tube float flowmeter uses the GB/T9119-2000 flange standard, and flange standards can be customized according to customer requirements. Threaded and clamp connection methods are also available.

Indicator Selection:

Users can select on-site display, battery-powered, wired remote, intrinsically safe, explosion-proof, or HART protocol-compatible models based on actual site requirements. Detailed functional descriptions of various indicators are listed below.

Indicator Type

Instrument Function Description

M1 Model

Local pointer indicates flow rate; no power required; no 4~20mA remote transmission; optional flow alarm device; scale can be set to instantaneous flow value or percentage scale value.

M3 Model

Local digital display, battery-powered, no 4-20mA remote transmission, non-explosion-proof. LCD shows instantaneous and accumulated flow rates; on-site buttons are used to view and modify parameters. The battery can last for 6 months; replace the battery when the T character appears on the display (battery model ER26500, 3.6V, 7.5Ah, -55℃~85℃).

M4 Model

Electrical remote transmission, intrinsic safety design, explosion-proof mark ExdⅡCT6, optional HART protocol functionality. Powered by DC24V, features on-site pointer indicating instantaneous flow and digital display for both instantaneous and cumulative flow. Two-wire system with 4-20mA output, panel equipped with 4 buttons for viewing and modifying internal parameters. Detailed usage instructions on page 18.

M5 Model

Electrical remote transmission, explosion-proof design, with explosion-proof marking ExdⅡCT6, optional HART protocol functionality. Powered by DC24V, featuring on-site pointer indicating instantaneous flow rate and digital display for both instantaneous and cumulative flow rates. Two-wire system with 4-20mA output. The panel is equipped with 4 buttons for viewing and modifying internal parameters.

Features:

◆ Suitable for low-pressure and low-flow rate medium flow measurement ◆ Reliable operation, minimal maintenance, long service life

◆ Straight section requirements are not stringent ◆ Broader range ratio of 10:1

◆ Dual-line LCD display, instantaneous/accumulated flow rate shown on-site ◆ Keyboard on the indicator for easy operation and settings

◆ Full metal structure, suitable for high temperature, high pressure, and strong corrosive media ◆ Non-contact magnetic coupling transmission

◆　Ideal for flammable, explosive hazardous environments ◆　Available with either DC power or battery-powered options

◆ Data recovery, data backup, and power failure protection features ◆ Multi-parameter calibration function

Technical Specifications:

Flow Meter Sizes: DN15, DN25, DN50, DN80, DN100, DN150 (other sizes available upon manufacturer consultation)

Flow Range: Liquid: 1.0 ~ 150,000 l/h; Gas: 0.05 ~ 3,000 m³/h (for detailed flow range, see page 11 flow chart)

Range ratio: 10:1, 20:1 (special)

Accuracy 1.5 grade, 1.0 grade (special)

◆ Pressure Class: DN15, DN25, DN50: 4.0MPa (max. 20MPa)

DN80, DN100, DN150: 1.6 MPa (max.: DN80: 10 MPa; DN100: 6.4 MPa; DN150: 4.0 MPa)

◆ Medium Temperature Standard: -30℃ to +120℃, High Temperature: 120℃ to 350℃

24VDC (12-36VDC) power supply

Output Signal: 4-20 mA DC (two-wire), HART protocol optional

Output Load 500Ω (when powered by 24V)

◆ Ambient Temperature: Field-mounted: -40℃ to 120℃; Remote transmission: -30℃ to 60℃

Storage Conditions: Temperature: -40℃ to 85℃; Humidity: ≤85%

◆ Connection Type: Flanged Connection, Flange Standard: GB/T9119-2000; Users may (other connection types can be negotiated with the manufacturer)

Cable Interface M20x1.5

◆ Enclosure Protection IP65

◆ Explosion-proof Mark: Intrinsically Safe Type: ExiaIICT6, Flameproof Type: ExdIICT6

◆ Pressure Loss, see Flow Chart

◆ Medium Viscosity: DN15: η < 5 mPa.s, DN25: η < 250 mPa.s, DN50~DN150: η < 300 mPa.s

◆ R1 Material for Liquid Contact: 304, 1Cr18Ni9Ti; Ro: 316, 0Cr18Ni12Mo2Ti

RL: 316L, 00Cr17Ni14Mo2Ti; Ti: Titanium alloy; Rp: PolytetrafluoroethyleneEthyleneLining.

Magnetic Filter

    If ferromagnetic particles are present in the medium, a magnetic filter should be installed before the flowmeter's inlet.