I. Brief Introduction:

This photo showcasesBottom-in, side-out metal tube float flow meterThe fluid inlet and outlet directions are bottom inlet and side outlet. The sensor material is standard 304 stainless steel (optional 316 or 316L). The indicator in the photo is powered by 24VDC, with an output of 4-20mA, intrinsically safe explosion-proof rating, and is available with HART protocol. Other types of indicators can be selected according to site requirements.

Overview:

    Metal Tube Float FlowmeterThe (Metal Tube Rotameter) is a commonly used variable area flow measurement instrument in industrial automation process control. It features a small size, a 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 and low volume measurements. Over the years, the metal tube float rotameter 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-price ratio.

Flowmeter Type:

The TF series metal tube float flowmeter 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 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.

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

Flowmeter Connection Specifications: The TF series standard metal tube float flowmeter 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 from on-site display, battery-powered, wireless remote, intrinsically safe, explosion-proof, or HART-compliant models according to the actual site requirements. Detailed functional 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 to 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, local buttons for viewing and modifying parameters. 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, featuring 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. Detailed instructions on page 18.

M5 model

Electrical remote transmission, explosion-proof design with ExdⅡCT6 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:

◆　Ideal for low flow rate and small bore medium flow measurement ◆　Reliable operation, low maintenance, long service life

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

◆ Two-line LCD display, showing instantaneous/accumulated flow rate on-site◆ The indicator features a keypad 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 and explosive 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 manufacturer consultation)

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

Range 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℃

Supply Voltage: 24VDC (12～36VDC)

Output Signal: 4-20 mA DC (two-wire), HART protocol optional

Output Load 500Ω (when powered by 24V)

◆ Environmental Temperature: Field Type: -40℃～120℃; Remote Type: -30℃～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 M20×1.5

◆ Shell Protection IP65

◆ Explosion-proof Mark: Intrinsically Safe Type: ExiaIICT6, Flameproof Type: ExdIICT6

◆ Pressure Loss, see flow table

◆ 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: polytetrafluoroethylene lining.

Magnetic Filter:

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