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Level Spring Balanced, Displacement type Level Indicator/TransmitterFS Series

Spring Balanced, Displacement type Level Indicator/Transmitter FS Series

FS Series PDF

*Specifications are subject to change without prior notice.

FS series detects and indicates liquid level by spring balanced displacer.
Along with local level indication by pointer dial, alarm contacts, pneumatic output or electiric outout can be provided for versatile application.

Features

  • · Applicable for High temp. and High press.(vacuum)
  • · Beside normal liquid level measurement, two liquid interface and liquid density measurement is possible
  • · Wide variation of material selection for corrosive liquids

Short Specifications

Measuring theory Spring Balanced, Displacement
Measuring object Liquid (Viscosity: Max. 600 mPa·s. Liquid without sticking, crystallization, or freezing)
Level measurement: Standard range 0.7 to 1.3 g/cm³
Interface measurement: Density difference Min. 0.2g/cm³
*Other density range available on request. However, size of connection flanges
may differ from standard sizes.
Measuring range Max. 0 to 3000mm
Min. 0 to 300mm
Temp. range
Std.: 
-10 to +150°C
Low temp. version: 
-40 to -11°C With radiation fin
High temp. version: 
+151 to +350°C With radiation fin
Press. range
Low press. version: 
Max. 1MPa
Medium press. Version: 
Max. 2MPa
High press. version: 
Contact us for details
Material construction
Spring: 
SUS316, UNS N10276, others
Displacer: 
SUS304, SUS316, SUS316L, others
Upper flange: 
Carbon steel, SUS304, SUS316, SUS316L, others
Chamber: 
Carbon steel, SUS304, SUS316, SUS316L, others
Process connection Tank top without chamber
Measuring range upto 1000mm: 
4B flange
Measuring range more than 1000mm: 
3B flange
Tank top bolt-on internal chamber
Measuring range upto 1000mm: 
5B flange
Measuring range more than 1000mm: 
4B flange
Tank side external chamber
1-1/2B flange
Indication accuracy ±1.5% F.S. (Based on mass conversion correction at factory calibration)
Output
With alarm contact: 
Max. 6 point(SPDT), Set point accuracy: ±1% F.S.
With electric transmitter: 
DC 4 - 20mA, Output accuracy: ±1% F.S.
With pneumatic transmitter: 
20 - 100kPa, Output accuracy: ±1% F.S.
Construction
FS-110W:
Local indication / general type
(IP54 equivalent)
FS-115W:
Local indication+Alarm contact / general type
(IP54 equivalent)
FS-115E:
Local indication+Alarm contact / Explossion proof
(d2G4)
FS-313W:
Pneumatic output / general type
(IP54 equivalent)
FS-512W:
Electric output / general type
(IP54 equivalent)
FS-512E:
Electric output / Explossion proof
(Exd II BT4)
FS-517W:
Local indication+Electric output+Alarm contact / general type
(IP54 equivalent)