1. 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 | ||||||||||
4. Assembling of the Chamber for Class 150 or 300
5. Assembling of the Chamber for Class 600
