Cảm biến đo mức kiểu ống thủy EF Series
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Cảm biến đo mức kiểu ống thủy EF Series

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EF By-Pass Level Transmitter


By by-passing a liquid to the outside chamber, taking advantage of a float inside the chamber with a magnet inserted as well as in the color flags, one can reveal the level of the liquid in a tank as the flags turn and change color by magnetic attraction to the float.



  • Applicable in environments with high temp., high pressure, strong acid, strong alkali and hazardous locations.
  • The structure is simple but durable and reliable. It is also with various optional devices for upgrade in use.
  • A Level Transducer or Magnetic Switches can be installed and adjusted with no need to stop any process.
  • It is not operated by electricity and with not be affected by power failure.
  • The flag display is scaled by a piece of color, division every 10cm, one can easily read the levels height.
  • Multiple applications for textile dyeing, sewage water processing, power generating, hot coal oil boiler and petrochemical industries.



Float type


Flag Display

Top end Type



1: EFB-2500 (PVDF)

2: EFB-2510 (PP)

3: EFB-2540 (SUS316)

A: EFB-2560 (SUS316)

C: EFB-2580 (SUS316)

S: Others

D: EFB-2600 (SUS316)



I : EFB-2592 (SUS316)


-: None

1: SUS304 – 140oC

2: SUS304 – 400oC

3: SUS316 – 140oC

4: SUS316 – 400oC

6: PP – 80oC

7: PVDF – 120oC

8: SUS304 – 200oC

9: SUS316 – 200oC

A: PP Coating – 80oC

B: PTFE Coating – 120oC

C: Blanket – 400oC

D: Heating Type – 100oC

1: EFB - 0750 (-20~140oC)

5: EFB - 0740 (-20~400oC)

6: EFB - 0700 (-20~200oC)

9: Other

-: None

A: Cap

B: Flat top + Plug

C: Dual flange + Plug

D: Flat top + Top mounting flange

E: Dual flange + Top mounting flange

F: Flat top + Control valve

G: Dual flange + Control valve

N: Dual flange + angle pipe

S: other

1: Flange

2: Screw (bolt type)

3: Screw (nut type)

4: Slip pipe

5: N/A

7: Control valve

8: Jacket

S: other

Bottom end Type

Operating Pressure range

Magnetic Switch


Length (Unit: m)

Other spec.

H: Dual  flange + Plug

I: Dual flange + Top mounting flange

J: Dual flange + angel pipe

+ Plug

K: Dual flange + control valve

L: Dual flange + angle pipe

M: Dual flange + Top mounting pipe

S: other

1: -1~ 10kg/cm2

2: -1~ 25kg/cm2

3: -1~ 50kg/cm2

4: -1~100kg/cm2

5: 0~5kg/cm2

A: EFB -1220

B: EFB -1230

C: EFB -1250

D: EFB -1260

E : EFB -1300

F : EFB -1310

G: EFB -1400

H: EFB -1410

I : EFB -1420

J : EFB -1430

K: EFB -1450

L: EFB -1440

M: EFB -1350

N: EFB -1360

1~ 4

05: < 0.5 m

10: 0.5~1m

15: 1~1.5m

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