Overview:

    intrinsically safe metal tube float flow meter(Flowmeter with Tube转子) is a commonly used variable-area flow measurement instrument in industrial automation process control. It features compact size, wide measurement range, and ease of use. It can be used to measure the flow rates of liquids, gases, and steam, particularly suitable for low flow rate and low volume applications. 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, due to its excellent performance, reliability, and favorable performance-to-cost ratio.

Flowmeter Type:

TF SeriesMetal tube float flowmeterComposed 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 inlet and outlet: vertical, horizontal (including horizontal T-type and horizontal spring type), bottom inlet and side outlet, side inlet and side outlet, and side inlet and top outlet. Each type features 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 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, wired remote transmission, intrinsically safe, explosion-proof, or HART protocol-equipped models based on actual site requirements. Detailed function 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 unit; scale can be set for instantaneous flow value or percentage scale value.

M3 model

Local digital display, battery-powered, without 4~20mA remote transmission, non-explosion proof. LCD shows both instantaneous and accumulated flow rates. On-site buttons can be used to view and modify relevant 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, inherently safe design, explosion-proof marking ExdⅡCT6, optional HART protocol function. Powered by DC24V, features on-site pointer indicating instantaneous flow and digital display of 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. Detailed usage instructions on page 18.

M5 model

Electrical remote transmission, explosion-proof design with ExdⅡCT6 explosion-proof marking, 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. The panel is equipped with 4 buttons for viewing and modifying internal parameters.

Feature Highlights:

◆ Suitable for low-pressure drop and low-flow rate 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, instantaneous/accumulated flow rate displayed on-site ◆ Equipped with a 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

◆ 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:

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

Flow Range: Liquid: 1.0～150,000 liters/hour; Gas: 0.05～3,000 cubic meters/hour (see Flow Chart on page 11 for detailed flow range)

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: 4-20mA DC (two-wire system), with optional HART protocol

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, DN50-150: 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 ferromagnetic particles are present in the medium, a magnetic filter should be installed before the flowmeter's inlet.