Overview:

    intrinsically safe 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 small 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 float flow meterComprised of measuring tubes (sensors) and indicators (electronic converters), various complete units can be assembled by selecting 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'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 has standard, high-temperature, and jacketed versions, among others.

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

Flowmeter Connection Specifications: The TF series metal tube float flowmeter standard model adopts the GB/T9119-2000 flange standard, and the flange standard 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, intrinsically safe, explosion-proof, or HART protocol-compatible models according to the actual needs on site. Detailed descriptions of the functions 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 can be set to show instantaneous flow rate 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 related parameters. The battery can last for 6 months; replace the battery when the display shows the "T" character (battery model: ER26500, 3.6V, 7.5Ah, -55℃~85℃).

M4 model

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

M5 model

Electrical remote transmission, explosion-proof design with ExdⅡCT6 marking, optional HART protocol functionality. Powered by DC24V, featuring现场 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:

◆　Ideal for low-flow and small-diameter medium flow measurement ◆　Reliable operation, low maintenance, and long lifespan

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

◆ Dual-line LCD display, showing instantaneous/accumulated flow rate 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

◆ Suitable for flammable, explosive and 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's consultation)

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

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

Accuracy: 1.5 grade, 1.0 grade (special)

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

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), HART protocol optional

Output Load: 500Ω (when powered by 24V)

◆ Environmental Temperature: Local 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

Shell 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

◆ Receiving Liquid 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.