I. Brief Introduction:

This photo showcasesExplosion-proof metallic tube float flowmeterThe sensor in the photo features a vertical downward-in, upward-out structure. The standard sensor material is 304 stainless steel (optional materials include 316, 316L, fluorinated lining, etc.). It is powered by 24VDC and outputs 4-20mA. Users can choose the explosion-proof type with ExdIICT6 classification, and options include HART protocol, etc. The sensor structure can be selected from various types based on the actual site conditions.

Overview:

    Metal Tube Float Flow MeterThe (Metal Tube Rotameter) is a commonly used variable area flow measurement instrument in industrial automation process control. It features a compact size, wide measurement range, and ease of use. It is suitable for measuring the flow of liquids, gases, and steam, particularly for low flow rates and low volumes. Over the years, the metal tube float rotameter has been widely applied in industries such as petrochemicals, steel, power, metallurgy, light industry, food, pharmaceuticals, and water treatment, thanks to its excellent performance, reliability, and favorable performance-to-price ratio.

Flowmeter Type:

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

The TF series metal tube float flowmeters are categorized into five types based on the direction of the fluid's 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 also features standard models, high-temperature models, jacketed models, etc.

Horizontal Installation TypeFlow meterFor diameters less than or equal to DN50, choose T-type structures; for diameters greater than DN50, opt for spring-loaded structures.

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

Indicator Selection:

Users can choose from on-site display, battery-powered, electrical remote transmission, intrinsically safe, explosion-proof, or HART protocol-enabled models based on actual site requirements. Detailed descriptions of the various indicators' functions 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 unit; scale can be set to instantaneous flow value or percentage scale value.

M3 model

Local digital display, battery-powered, without 4~20mA remote transmission, non-explosion proof. LCD shows instantaneous and cumulative flow rates; on-site buttons are used to view and modify related parameters. Battery can be used 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, inherently safe design, explosion-proof marking ExdⅡCT6, optional HART protocol functionality. Powered by DC24V, features on-site pointer indication for instantaneous flow and digital display for both instantaneous and cumulative flow. Two-wire system with 4~20mA output. The panel is equipped with 4 buttons for viewing and modifying internal parameters. For detailed usage, refer to page 18.

M5 Model

Electrical remote transmission, explosion-proof design, with防爆标志ExdⅡCT6, optional HART protocol functionality. Powered by DC24V, featuring现场指针indicating instantaneous flow and digital display for both instantaneous and cumulative flow. Offers a 4~20mA two-wire output system. The panel is equipped with 4 buttons for viewing and modifying internal parameters.

Features:

◆　Suited for low-pressure and low-flow medium flow measurement ◆　Reliable operation, minimal maintenance, long lifespan

◆ Not stringent requirements for straight sections◆ Wide range ratio up to 10:1

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

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

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

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

Technical Specifications:

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

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

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

Accuracy: 1.5 grade, 1.0 grade (special)

◆ Pressure Grades: 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℃

Power Supply: 24VDC (12-36VDC)

Output signal 4-20 mA DC (two-wire), with optional HART protocol

Output Load 500Ω (when powered by 24V)

◆ Environmental Temperature: On-site Type: -40℃ to 120℃; Remote Type: -30℃ to 60℃

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

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

Cable Interface M20×1.5

◆ 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, DN50-150: η<300 mPa.s

◆ Fluid Receiving Material R1: 304, 1Cr18Ni9Ti; Ro: 316, 0Cr18Ni12Mo2Ti

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

Magnetic Filter

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