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flow meter

MTF Smart Metal Tube Variable Area Flow Transmitter
MTF Smart Metal Tube Variable Area Flow Transmitter
Summary
MTF smart metal tube variable area flow transmitter is an intelligent instrument that are developed and manufactured in DDTOP. It corresponds the fluid flow signals to analog voltage signals, then converts into 4-20mA two-wire system current signals on which HART communication protocol  may be superimposed on it. It has high precision ,low draft ,strong capability of anti-interference, and can realize the functions of remote configuration, monitoring, maintenance and adjustment, etc.
Patent Certificate No.: ZL02 3 53133.9.
  • Operating Principle
  • Technical Parameter
  • Model Selection Table
  • Outline and installation
  • Ordering information


Fluid moving will give float a lift force. When the buoyancy is equal to gravity force of the float, the float will sustain at a position,then by measuring the float position to indicate the flow rate of measured fluid. Please see Picture1, the magnetic steel inside the float coupling with the one on rotor of angular displacement sensor, up and down movement of float will rotate angular displacement sensor, output 4~20mA current signal and turn into flow val

Flow rate is made up of two parts, they are measurer and transverter. Connecting type is horizontal mounting type & vertical mounting type. Please see Picture 2 & 3.

 
1. Main parameters
Operating voltage: DC24V
Output signal: two wires, 4~20mA DC+ HART
Flange standard: HG/T20592-2009; HG/T20617-2009  (or on request)
Power supply inlet: M20×1.5(Female) or on request
Input resistance: >100MΩ;
Standard load resistance: 250Ω
Nominal pressure: DN15-DN50:PN≤10.0MPa; DN80-DN100:PN≤6.3MPa 
Precision: 1.0% FS (diameter of DN15 and DN 20 is 2.0% FS)
Operating temperature: -40℃~+300℃。
Damping period: (0-32s)
Ambient temperature: -40~+70℃(LCD:-20~+70℃)
Explosion- proof type: Intrinsically safe explosion type: ExiaⅡCT4; Isolation explosion type: ExdⅡCT4
Protection class: IP67

Flow rate range
Water: 2.5 L/h --100000L/h(20℃)
Air: 0.07--1800m3/h(0.1013MPa, 20℃)

Applicable fluid viscosity
DN15、DN20:η<5mPa.s(FZ15.1,FZ15.2,FZ15.3)
η<30mpa.s(FZ15.4,FZ15.5,FZ15.6,FZ15.7,FZ15.8、FZ20.1、FZ20.2)
DN25、DN40: η<250mPa.s 
DN50~DN100: η<300mPa.s

2. Type
By mounting way: horizontal mounting type & vertical mounting type
By fluid: 
Basic type:  For liquid measuring.
With damping type:  For gas & steam measuring.
Anti-corrosion type:  Lining Teflon (PTFE), for corrosive medium measuring.
Jacket type:  For fluid needs staying warm or cool condition.
Attention: (Anti-corrosion type& jacket type has no horizontal mounting type.)
1. Model Selection Table
 
Model Code Content
MTF - A   With local indicator & remote transducer (dual display) Metal Tube Variable Area Flow Transmitter
B   With remote transducer (digital display) Metal Tube Variable Area Flow Transmitter
C   With local indicator (pointer indication) Metal Tube Variable Area Flow Transmitter
    1   1.6MPa
2   2.5Mpa  (class150)
3   4.0MPa
4   6.3Mpa   (class300)
5   10.0Mpa  (class600)
  015       DN15
020       DN20
025       DN25
040       DN40
050       DN50
080       DN80
100       DN100
  H   Wetted material: 304
R   Wetted material: 316L
P   Wetted material: Teflon (PTFE)
Q   Other materials:
  /    
  i   Intrinsically safe type
  d   Isolating explosion type
    D   Fluid temperature: 0~200℃
G   Fluid temperature:-40℃-0℃ 200℃-300℃
  Z   With damping type
  W   Without damping type
      S   Horizontal mounting type
  C   Vertical mounting type
MTF - □    □   □   □  /    □    □  □   □

Model selection sample: MTF-A1025H/dDWC is Metal Tube Variable Area Flow Transmitter, with local indicator & remote transducer , flange is PN1.6 , DN25, wetted material is 304, isolating explosion type, operation temperature 0℃~200℃, without damping type, vertical mounting type.

2. Model selection of flow value
 
Nominal diameter Float code Flow value(Water--L/h;Air--m3/h) Pressure loss--kPa
Water calibration Air calibration Water calibration Air calibration
Float material Float material
304 PTFE 304 304 PTFE 304
DN15 FZ15.1 25 - 0.7 6.5 - 7.1
FZ15.2 40 25 1.1 6.5 5.5 7.2
FZ15.3 60 40 1.8 6.6 5.5 7.3
FZ15.4 100 60 2.8 6.6 5.6 7.5
FZ15.5 160 100 4.0 6.8 5.6 8.0
FZ15.6 250 160 7.0 7.2 5.8 10.0
FZ15.7 400 250 10.0 8.6 6.1 10.8
FZ15.8 600 400 16.0 11.1 7.3 14.0
DN20 FZ20.1 750 600 20 6.9 5.9 7.3
FZ20.2 1600 1000 34 7.8 6.2 8.2
DN25 FZ25.1 1000 600 30 7.0 5.5 7.7
FZ25.2 1600 1000 45 8.0 5.6 8.8
FZ25.3 2500 1600 70 10.8 5.6 12.0
FZ25.4 4000 2500 110 18.8 6.4 19.0
FZ25.5 6000 4000 180 20.0 10.0 25.0
  DN40 FZ40.1 2750 1850 90 7.2 6.2 7.8
FZ40.2 5000 2750 150 7.5 6.5 8.5
FZ40.3 6500 5000 210 8.3 7.1 9.4
FZ40.4 8500 6500 320 9.8 8.5 10.3
DN50 FZ50.1 6000 4000 180 8.1 6.8 8.6
FZ50.2 10000 6000 300 11.0 8.8 10.4
FZ50.3 16000 10000 600 17.0 13.7 15.5
DN80 FZ80.1 25000 16000 1000 8.1 6.3 8.0
FZ80.2 40000 25000 1200 9.5 7.2 14.0
DN100 FZ100.1 60000 40000 1800 10.0 7.9 25.0
FZ100.2 100000 - - 15.0 - -
1. Structure style & size of flow meter: Please see Picture 2&3



2. Magnet filter structure style & size
When the fluid contains solid particles, the filter should be installed in the front of upper stream straight pipe section of the meter to get rid of the particles. When the fluid contains ferromagnetic substance, the magnet filter manufactured in our company should be purchased with the meter to protect the meter’s accuracy and prolong its service life. Magnet filter (Please see Picture 4), wetted material can be 304, 316 or other material.


3. Safety barrier suggesting sheet: 
 
Safety barrier suggesting sheet
Shanghai I.S.Instruments & system Co.,Ltd LS4041-Ex
PEPPERL+ FUCHS KFD2-STC3-Ex1
Shanghai Automation Instrument Institute GS8041-Ex GS8045-Ex
Dandong Top Electronics Instrument (Group) Co.,Ltd TP5041-Ex TP5045-Ex
Longfei Group LF1045
England MTL3046B MTL5042 MTL706+
Please supply below date when ordering:

Fluid
Operating pressure(for liquid, may not to fill in)
Operating temperature(for liquid, may not to fill in)
Fluid density
Manufacturing range
Flange standard