General Introduction

Tokyo Keiso FST4000 Torque Tube Displacer Level Transmitter is a torque tube displacement type level indicating transmitter with intelligent data processing function. Through 18 years of field proven experiences accumulated by the existing model FST-3000, FST4000 has intensified its reliability by adding such features as SIL2 compatible functional safety, ATEX flameproof and field bus communication of FOUNDATION Fieldbus. Varieties of materials and wide range of pressure ratings are available to meet various applications such as high pressure and temperature boilers as well as low temperature down to minus 196℃ of liquefied gases.

2. Short Specifications

Model

FST4000

Detection Method

Torque tube type displacer

Liquid density

Level measurement: 0.2 to 1.5g/cm³

Interface measurement: Density   difference between 2 liquids is more than 0.1 g/cm³

Density measurement: Min. density span   is 0.2 g/cm³

Measuring range

Min. 0 to 300mm

Max. 0 to 3000mm

Temperature   range

-196 to +450ºC

Pressure class

ASME class 150,300,600,1500 and 2500

Connection size

External chamber type: 1-1/2 or 2 inch   flange

Internal chamber type: 3 or 4 inch   flange

Material

Torque tube: SUS316, NW0276, NCF600,   MONEL

Bonnet: SCPH2, SCS13A, SCS14A, SCS16A,   NW0276

Chamber: Carbon steel, SUS304, SUS316,   SUS316L, NW0276

Displacer: SUS304, SUS316, SUS316L,   NW0276, MONEL, PVC

Transmitter housing: ADC12

Local indication

LCD display

Output / Power   supply

4-20mA DC, 2wire system with HART   Version6 / UB 8 to 40V DC FOUNDATION Fieldbus / 9 to 32V DC

Accuracy

±0.5% F.S., Based   on mass conversion correction at factory calibration

Protection class

JIS C 0920 equivalent to IEC60529 , IP67

Explosion proof   classification

Flame proof: TIIS Exd Ⅱ CT6 ATEX &   IECEx Exd Ⅱ CT6 (KOSHA ,NEPSI)

Intrinsically safe: ATEX & IECEx Ex   ia Ⅱ CT6  (KOSHA , NEPSI)

3. Basic Code Selection of FST4000

Main

Code

Suffix Codes

Description

FST4









Always FST4

Measuring range

1








300 mm or less

2








301 to 500 mm   inclusive

3








501 to 700 mm inclusive

4








701 to 1000 mm   inclusive

5








1001 to 1500 mm inclusive

6








1501 to 2000 mm inclusive

7








2001 to 2500 mm   inclusive

8








2501 to 3000 mm   inclusive

9








Special

Installation   methods

1







SIDE － SIDE

2







BOTTOM － SIDE

3







SIDE － TOP

4







BOTTOM － TOP

5







Top mount

6







Side mount

9







Special

Material:

Bornet/

Displacer/

Chamber

1






SCPH2 / SUS304 / Carbon steel


2






SCS13A/ SUS304 / SUS304


3






SCS14A/ SUS316 / SUS316


4






SCS16A/ SUS316L/ SUS316L


9






Special

Enclosure


 -





General purpose



E-





Flame proof type



S-





Intrinsically   safe type

Pressure rating



1




ASME (JPI) Class   150




2




ASME (JPI) Class   300




3




ASME (JPI) Class   600




4




JIS 10K




5




JIS 30K




6




JIS 63K




7




ASME (JPI) Class   1500




8




ASME (JPI) Class   2500




9




Special

Process connection




1



1-1/2 inch   flange





2



2 inch flange





3



3, 4 inch flage   (used only for the installation ＇5＇top mount)





9



Special

Torque tube   material





1


SUS316L -196 to   200ºC






2


ICONEL -196 to   450ºC






3


NW0276 -196 to   200ºC






9


Special

Cable entry






1-

G1/2(F)







2-

1/2NPT(F)







9-

Special

Orientation (rotation angle)







L1 to L8

Left hand side








R1 to R8

Right hand side

Explosionproof and communication








1

TIS Flameproof   with HART Exd ⅡC T6









3

ATEX & IECEx   Flmeproof with HART Exd ⅡC T6









4

ATEX & IECEx   Intrinsic safety with HART Exd ia ⅡC T6









5

ATEX & IECEx   Flmeproof with FOUNDAION Fieldbus Exd ⅡC T6









6

ATEX & IECEx   Intrinsic safety with FOUNDAION Fieldbus Exd ⅡC T6









7

KOSHA Flmeproof   with HART Exd ⅡC T6









8

KOSHA Intrinsic   safety with HART Exd ⅡC T6









A

NEPSI Flmeproof   with HART Exd ⅡC T6









B

NEPSI Intrinsic   safety with HART Exd ⅡC T6