I. Brief Introduction:

This photo introducesintrinsically safe metal tube turbine 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 on-site conditions.

Overview:

   intrinsically safe metal tube turbine 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 can be used to measure the flow of liquids, gases, and steam, particularly suitable for low flow rate and low volume measurements. 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:

intrinsically safe metal tube rotameterComposed of measuring tubes (sensors) and indicators (electronic converters), different types of measuring tubes and indicators can be selected to assemble into various complete units, catering to 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 features standard, high-temperature, and jacketed versions.

Horizontal Mount 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; both threaded and clamp connection methods are also available.

Indicator Selection:

Users can select on-site display, battery-powered, wireless remote, intrinsically safe, explosion-proof, or HART protocol-compatible 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 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 related 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 marking ExdⅡCT6, optional HART protocol function. DC24V power supply, on-site pointer indicates instantaneous flow and digital display of instantaneous and accumulated flow. 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 ExdⅡCT6 explosion-proof marking, optional HART protocol functionality. DC24V power supply, local pointer indicates instantaneous flow rate and digital display for both instantaneous and accumulated flow rates. Two-wire system with 4~20mA output, equipped with a panel featuring 4 buttons for viewing and modifying internal parameters.

Feature Highlights:

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

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

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

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

◆ Suitable for flammable, explosive and hazardous environments ◆ Optional DC power supply or battery-powered operation ◆

◆ 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 consultation with manufacturer)

Flow Range: Liquid: 1.0～150,000 L/h; Gas: 0.05～3,000 m³/h (see flow chart 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 system), HART protocol optional

Output Load 500Ω (when powered by 24V)

◆ Environmental Temperature: Local Type: -40℃～120℃; Remote Type: -30℃～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 M20x1.5

◆ 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

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

RL: 316L, 00Cr17Ni14Mo2Ti; Ti: Titanium alloy; Rp: PolytetrafluoroethyleneEthylene (C2H4)Lining.

Magnetic Filter

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