Overview:

    intrinsically safe metal tube float flow meterThe metal tube rotor flowmeter 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 rates of liquids, gases, and steam, particularly for low flow rates and small volumes. Over the years, the metal tube float flowmeter has been widely applied in industries such as petrochemicals, steel, electricity, metallurgy, light industry, food, pharmaceuticals, and water treatment, due to its excellent performance, reliability, and favorable performance-to-cost ratio.

Flowmeter Type:

TF SeriesMetal Tube Float Flow MeterComposed of a measuring tube (sensor) and an indicator (electronic converter), various whole machines can be assembled by choosing different types of measuring tubes and indicators, to meet on-site requirements.

The TF series metal tube float flowmeters are divided into 5 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 also features standard models, high-temperature models, jacketed models, etc.

For horizontal installation flowmeters, choose T-type structures when the diameter is less than or equal to DN50, and spring structures when greater than DN50.

Flow Meter Connection Specifications: The TF series metal tube float flow meter 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 select on-site display, electrical remote transmission, intrinsic safety, 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

Locally mounted pointer indicates flow rate; no power required, no 4-20mA remote transmission; optional flow alarm device; scale dial can be set for instantaneous flow rate or percentage scale value.

M3 Type

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 related parameters. Battery life is up to 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 marking ExdⅡCT6, optional HART protocol functionality. Powered by DC24V, features on-site pointer indicating instantaneous flow rate and digital display for both instantaneous and accumulated flow rates. Two-wire system with 4-20mA output. The panel is equipped with 4 buttons for viewing and modifying internal parameters. Detailed instructions on page 18.

M5 model

Electrical remote transmission, explosion-proof design, with防爆标志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.

Feature Highlights:

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

◆ Not stringent requirements for straight pipe section◆ Wide range ratio of 10:1

◆ Dual-line LCD display, showing instantaneous/accumulated flow rate on-site ◆ The indicator features a keyboard for easy operation and settings

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

◆ Suitable for flammable, explosive hazardous environments ◆ Available in DC power or battery-powered options

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

Technical Specifications:

◆ Flowmeter sizes: 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 Class, 1.0 Class (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℃

Power Supply: 24VDC (12~36VDC)

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

Output Load: 500Ω (at 24V power supply)

◆ Environmental Temperature: Local Type: -40℃ to 120℃; Remote Type: -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, DN50-150: η<300 mPa.s

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

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

Magnetic Filter

If the medium contains ferromagnetic particles, a magnetic filter should be installed before the flow meter's inlet.