Mechanical Direct Action

FB-9000
Bellows type

Float Level SwichGENERAL
FB-9000 is a bellows type, mechanical direct action float levelswitch.
Liquids with ferrous powers/particles, which is not suitable
for magnet coupling type float level switch, are measured anddetected.

STANDARD SPECIFICATION
Measuring object

All types of liquids
Minimum density ; 0.6g/cm3Max. operating pressureStandard 0.2MPa
Option2MPa
Liquid temp.
–19 + 150°C
Process connection
1) Tank side nozzle installation
Standard4" (100mm) ﬂange
2) Tank side external chamber installationStandard
1" (25mm) ﬂange or screw3) Option
Tank top installation
Consult factory for details
Enclosure1) Weather proof type (IP65 equivalent)2) Flame proof (d2G4)3) Intrinsically safe (i3aG5)
Suitable safety relay to be provided in safe area
MaterialFloat
304SS, 316SS, 316LSS
Bellows
316LSS
Flange304SS, 316SS, 316LSS
External chamber Carbon steel, 304SS, 316SS, 316LSS
Available switch
1) SPDT microswitch
Capacity
250 V AC, 5 A or 125 V DC, 0.4 A
Minimum applicable load
5 V DC, 160 mA2) Air microswitch
3 port type, 0 to 1 MPa (Max.)
Reset spanMax. 20mm (Fixed)
Cable entry
Standard1 × G1/2
(2 × Rc 1/4 for air microswitch version)
Cable termination
M3.5 screw for general purpose
M4 screw for ﬂameproof

MATERIAL CONSTRUCTION● Level switch
Material class 3 Material class 4 Material class 5Float

304SS

316LSS

316LSS

BellowsFlange

316SS

304SS

Housing

316SS

316LSS

AC2A● External chamber
Carbon steel, 304SS, 316SS, 316LSS, Others

NOTES
1. Bolts, nuts and gaskets to mount the level switch are customers'
scope of supply.
Prepare suitable materials.
2. This model is not suitable for freezing, adhesive or solidifying
liquids.

TERMINAL ARRANGEMENT●Micro switch
Terminal No.
NC1NO2COM
3M3.5 screw for general purpose
M4 screw for ﬂameproof●Air micro switch
OUT
ONOFF
EXH

IN

TG-L439-2E
RevisedNov 2015 K
2nd edition May 1997

FB-9000 BELLOWS, FLOAT LEVEL SWICH

MODEL CODE
FB-909Pressure
12rating

Construction̶̶Description
0.2MPa2.0MPaWWPEEPSSP

Level switch

Material class̶̶̶̶

345Z

Connection ﬂange standard

Flange rating

Type of switch
Alarm

Exterminal chamber

Chamber material

1Z
1234
567
Z
12ZHL̶̶̶
̶̶Connection size and rating

Gaskets between level switch and external chamber

Bolts, nuts between level switch and external chamber

0
123
Z
0
1
234
56
78
Z
0
2
4
56Z
0
1
234
Z

Weather proof
Weather proof with JISF15b glands※
Plame proof (d2G4)
Plame proof (d2G4) with ﬂame proof cable glands※
Intrinsically safe (i3aG5,safety relay provided)
Intrinsically safe (i3aG5,safety relay provided) with JISF15bglands※
Material class 3
Material class 4
Material class 5
OthersStandard 4" (100mm)
Others (Min.100mm)
JIS5K
JIS10K
JIS20K
ANSI#150
ANSI#300
JPI#150
JPI#300
OthersStandard SPDT microswith
Air microswitch (weather proof only)
OthersHighLow
No external chamber provided
Carbon steel
304SS
316SS
OthersNo external chamber provided
1"SWRc1"
1BJIS10KRF
1BJIS20KRF
1"ANSI#150
1"ANSI#300
1BJPI#150
1BJPI#300
OthersNo external chamber provided (No gasket)
PTFE (V#7020 or equ.)
PTFE (V#7030 or equ.)
METAL WOUND (V#8591 304SS or equ.)
METAL WOUND (V#8591 316SS or equ.)OthersNo external chamber provided
SS400 / SS400 (Unavailable for vortex gasket)
SNB7/S45C
304SS / 304SS (Unavailable for vortex gasket)
A193-B7/A194-2H
Others※：Cable diameter to be speciﬁed for order

2TOKYO KEISO CO., LTD.

TG-L439-2E

FB-9000 BELLOWS, FLOAT LEVEL SWICH

EXTERNAL DIMENSIONS●Micro switch
223

223

162

130

162

φ133
112
181

φ60

φ60

φ133

130

G1/2

Weather proof（FB-9091W)

Flameproof（FB-9091E)●Air micro switch
277φ133●External chamber
134

130130170170190

300

φ133φ70160

Screw connection type

Flange connection type

* Specification is subject to change without notice.

Head Office : Shiba Toho Building, 1 – 7 – 24 Shibakoen, Minato-ku, Tokyo 105 – 8558
Tel : +81-3 – 3431 – 1625 (KEY) ; Fax : +81-3 – 3433 – 4922
e-mail : overseas.sales@tokyokeiso.co.jp ; URL : http://www.tokyokeiso.co.jp
TG-L439-2E

TOKYO KEISO CO., LTD.

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