FOR MULTIPOINT LEVEL ALARM DETECTION BY ONE UNIT

FP-4000 Series
FLOAT LEVEL SWITCHOUTLINEThe FP-4000 series is a float level switch, which is installed through thetank nozzle on tanks and/or pits.
Level alarm detection is possible at up to 11 points (up to 6 points for theflameproof version). This switch can be used to control loading/unloading
pumps and monitor High-high and Low-low level alarms, saving total instrumentation costs.
In addition to the standard stainless steel material for wet parts, other materials such as PVC, HPVC, PP and fluorocarbon resins are also available.
Thus, the switch can be used for monitoring and controlling the level ofordinary water, waste water, chemicals and highly corrosive liquids. Besides
weatherproof type, flameproof and intrinsic safety versions are available foruse in hazardous area.

MAIN APPLICATIONS❑ Preventing overflow of liquids and idle suction by pumps❑ Controlling loading/unloading pumps❑ Monitoring the liquid level of underground tanks/pits

STANDARD SPECIFICATION
Measuring objects :Any liquids with a viscosity of 600 mPas orless
No freezing, adhesion, or coagulation
Minimum liquid density: See “Float details & outside dimensions ofbody.”
Liquid temp. :a. Model FP-4000 and FP-4100
Wetted part material

Material code

Liquid temp. range

SUS304,316,316L

0123

PVC
H PVC
PP
PFA

4
5
6
7

–5 to 100°C(Special: –20 to 150°C)
0 to 60°C
0 to 80°C
0 to 60°C
0 to 100°C

Wetted part material

Material code

Liquid temp. range

SUS304,316,316L
PVC
H PVC
PP
PTFE
PFA

0123
4
5
6
7
8

–10 to 80°C
0 to 60°C
0 to 80°C
0 to 60°C–5 to 80°C
0 to 80°C

b. Model FP-4200

Ambient temperature :								
Pressure range :Model FP-4000 and FP-4100
Model FP-4200		
Connection :Model FP-4000 and FP-4100
			
			
			
			
Model FP-4200		
Max length of guide pipe :Enclosure :Model FP-4000					
Model FP-4100 and FP-4200

See float details.
See float details.
SUS/PVC:50A to 200A (2B to 8B), flange
PFA: 80A to 200A (3B to 8B), flange
Thread connections such as G2
and R2 are also available excluding
PFA. Contact us for details.
80A to 200A (3B to 8B), flange
Refer to it for each model.

:

:
			
			

Exd II BT6 (RIIS, Japan)
Model FP-4100 TC14695-14697
Model FP-4200 TC14698-14700

Protection code

FP-4100

FP-4200

Alarm contract
Contact setting: Reed switch: Specify ON or OFF (HC or HO) for float rising, and ON
or OFF (LC or LO) for float falling for each contact.
Contact capacity :Model FP-4000 and FP-4100
50 W
				
Max. switching voltage				
220 V AC, 110 V DC				Max. switching current
				
0.7 A
Model FP-4200
10 W AC/DC				Max. switching voltage				
125 V AC, 100 V DC				Max. switching current
				
0.5 A
A surge suppressor is provided ex				
cept for the intrinsically safe version.
Repeatability: Within ±5 mm
Reset span
: 10 mm or less
No. of alarm point :Model
WiringIndependent–20 to 70°C
–20 to 55°C (Flameproof )–20 to 60°C (Intrinsic safety)

Weatherproof or intrinsic safety(Relay barrier installed separately)1
Weatherproof, flameproof* or
intrinsic safety (Relay barrier
installed separately)
Equiv. to IP65

*1Class

FP-4000

Commonreturn*2: Special order

Cable entry: Model FP-4000:

FP-4000

FP-4100

FP-4200

3

6

6

5

11 2

11*2

*

One entry (either G1/2 or G3/4)

			 Model FP-4100 and FP-4200:
				One entry (G3/4) as standard				Max. two entries on request

Adapters will be provided when different sizes or
NPT connection are designated.
Flameproof cable glands are available on request for use inhazardous areas. Use the following cable gland to conformto explosionproof standards.
Designated cable gland: Model SXC-22B by Shimada
Electric, which is suitable for cables with a diameter of
12 to 13.9 mm. For other cable sizes, specify a cablediameter among 8 to 9.9, 10 to 11.9, or 14 to 15.9 mm toselect a proper cable gland.
Cable termination :Model FP-4000
M4 screw
Model FP-4100 and FP-4200
M3.5 screw
Finish: 		
Aluminum part
Silver				
Stainless steel
No paint
Approved products for High Pressure Gas Safety Act are available. Consult
us for details.

TG-L2504-E00
1st edition Jun 2024 K

FP-4000 FLOAT TYPE LEVEL SWITCH

FP-4000
The FP-4000 is highly cost-effective thanks to its compact design.
Weatherproof and intrinsic safety versions are available (see Model FP-4100 and FP-4200 for the flameproof version).
		

Model code
FP-40

0
1
2
3
4
5
6
7
Z
1
2
3
A
B
C
D
Z
W
S
0
1
2
3
4
5
Z
1
2
3
4
Z
5
0
1

2
Z

Material
FlangeGuide pipe
SS400
SUS304
SUS304
SUS304
SUS316
SUS316
SUS316L
SUS316L
PVC
PVC/SUS304
HPVC
HPVC/SUS304
PP/SUS304
PP
PFA/SUS304
PFA/SUS304
OthersNumber of contact output
One point only
Independent 2 points
Independent 3 points
Common return 2 points
Common return 3 points
Common return 4 points
Common return 5 points
OthersEnclosure
Weatherproof
Intrinsic safety*3
Connection
JIS5K50AFF
JIS5K50ARF
JIS10K50AFF
JIS10K50ARF
2BJPI#150RF
2"ANSI#150RF
Others*1
Cable entry
G1/2
G1/2 (cable gland provided)
G3/4
G3/4 (cable gland provided)
Others*2
Contact capacity
Standard (50W)
Accessories
Not provided
Relay barrier(intrinsically safe
explosion-proof structure)*3
RD-1000 relay driver
OthersFloat
SUS316L
SUS316L
SUS316L
SUS316L
PVC
HPVCPP
PFA/NBR

Stopper
SUS316
SUS316
SUS316
SUS316L
PVC
HPVC
PP
PTFE

*1 Example: JIS10K65A to 150ARF/FF
2-1/2" to 6"ANSI#150RF/FF
2-1/2B to 6BJPI#150RF/FF*2 Example: 1/2"NPT,
3/4"NPT, M20

Terminal arrangement

SW3

A1
A2
B1
B2
b1
b2

SW1
SW2
SW3
SW4
SW5

A1
A2
B1
B2
b1
b2

SW1
Independent
wiringCommonreturn wiringSW2

1 (1 point)
2 (2 points)
3 (3 points)

A (2 points)
B (3 points)
C (4 points)
D (5 points)

Relay barrier (intrinsically safe explosion-proof structure)*3 (Type: EB3C)*3 ‌For the intrinsic safety version (Code S), an intrinsically safe relay unit will be provided on request. Specify the power supply voltage (100/110 V AC or
200/220 V AC). Select the type of relay barrier from the table at lower right.

Standard specifications
Type of protection
Objective gas
Intrinsic safety rated voltage
Intrinsic safety rated current
Place to be installed
Contact configuration
Relay output(Resistance load)
Contact permissible power(Resistance load)
Insulation resistanceWithstand voltage

2

Intrinsic safety
Ex ia IIC
12V DC ±10%10mA DC ±20%Non-hazardous area
1a contact
250V AC 3A
24V DC 3A
750VA DC72W DC
10MΩ at 500V DC ohmmeter
1500V AC, 1 minuteTOKYO KEISO CO., LTD.

Model code
EB3C- R□□
R
Output type
01
Number of
02
point
03
Supply voltage

Contents
Model name
Relay output
For 1 point
For 2 points
For 3 points
AN 100 to 240V AC, 50/60Hz
DN 24V DC□

TG-L2504-E00

FP-4000 FLOAT TYPE LEVEL SWITCH

Outside dimension
Float details & outside dimensions of body
SUS316L
0.66
0.8 ✽4

Material of float
Allowable pressure [MPa](Standard) Withstand pressure test [MPa]Allowable minimum
liquid density [g/cm3]
Di- Diameter of guide pipe (d)men- Maximum outside diameter of float(D) ✽1
Inside diameter of float
sion
[mm]
Height of float (H)Minimum h1 dimension [mm]Minimum interval (S) [mm]Minimum L dimension
Lowest end point + X [mm] ✽2

0.6
52
58
100

13.8
15.4

PVC
0.13
0.2
0.78

1.0

43 ✽7

42

PP
0.2
0.3
1.0

0.75
18
20
70

50

60

HPVC

22
50
25
60

48 ✽7

90
120 ✽5

90

X＝90

X＝60

✽8

0.79

1.3
16

68.2

42.6

19

100
140
150

50
80
100

X＝140

X＝80

✽8

✽8

G1/2 or G3/4

PFA/NBR0.2
0.3

G1/2 or G3/4

G1/2 or G3/4

140

H

h1
h2

h2

SW2

L✽6

SW3

SW3

h4

s

SW4

SW4

SW4
SW5

SW5

X

X

X

h5

h5
SW5
d
d
Material code 0 1 2 3

L✽6

h3

h3

H

SW3

⑤

⑤Stopper

SW2

SW1

h5

④FloatDh4④

Connections③Guide pipe

L✽6

③

s

②FlangeSW2h4①Terminal box

SW1

D

h3

H

Outside drawing ✽3

h1

h1

D

Connection

SW1

h2

Connection

10

140

②

132

①

Material code 4 5 6dMaterial code 7✽1: Confirm that the float can be inserted into the nozzle.

2: Can be reduced depending on liquid density and the operation of contacts. Contact us for details.

✽✽3: The number of floats and stoppers in figures may differ for smaller intervals.

4: The test will be carried out at 1.0 MPa for floats with a design pressure from 0.53 to 0.66 MPa.
5: Available from 100 mm by special order (see ✽3)✽6: Max. length of the guide pipe
✽
✽

[mm]

Structure
Weatherproof (W)Intrinsic safety (S)Flameproof (E)

SUS

Material
PVC
PP

PFA

4900

3900

3900

3900

3900

7: Floats come in this size unless another size is specified.

✽✽8: G1/2 is applied as standard.

TG-L2504-E00

TOKYO KEISO CO., LTD.

3

FP-4000 FLOAT TYPE LEVEL SWITCH

FP-4100
The FP-4100 uses a large terminal box which can accommodate up to 12 terminals. Up to 6 points can be used for independent wiring, making the wiring
procedure and sequence easy. Weatherproof, intrinsic safety (safety relay required), and flameproof versions are available.
With the common return wiring, up to 11 points can be used as alarm contacts (up to 6 points for the flameproof version). Therefore, a single unit can cover
multicontrol of liquids or other special purposes such as a liquid level meter.

Model code
FP-41

0
1
2
3
4
5
6
7
Z
1
2
3
4
5
6
A
B
C
D
E
Z
W
E
S
0
1
2
3
4
5
Z
1
2
3
4
Z
5
0
1

2
Z

Material
FlangeStopper
Guide pipe
Float
SS400
SUS316
SUS304
SUS316L
SUS304
SUS316
SUS304
SUS316L
SUS316
SUS316
SUS316
SUS316L
SUS316L
SUS316L
SUS316L
SUS316L
PVC
PVC
PVC/SUS304
PVC
HPVC
HPVC
HPVC/SUS304
HPVC
PP
PP
PP/SUS304PPPTFE
PFA/SUS304
PFA/SUS304
PFA/NBR
OthersNumber of contact output (Up to 11 points are available by special order.)One point only
Independent 2 points
Independent 3 points
Independent 4 points*2 Example: 1/2"NPT,*1 Example: JIS10K65A to 150ARF/FF
Independent 5 points
3/4"NPT, M20
2-1/2" to 6"ANSI#150RF/FF
Independent 6 points
2-1/2B to 6BJPI#150RF/FF
Common return 2 points*3 See the bottom of page 2.
Common return 3 points
Common return 4 points
Common return 5 points
Common return 6 points
Terminal arrangement
OthersEnclosure
Weatherproof
Flameproof
1
Intrinsic safety*3SW1
2 1(1 point)
Connection
3
JIS5K50AFF
SW2
4 2(2 points)
JIS5K50ARF
5
JIS10K50AFF
6 3(3 points)
JIS10K50ARF
Independent SW3
2BJPI#150RF
7wiring2"ANSI#150RF
SW4
8 4(4 points)
Others*1
9
Cable entry
SW5
10 5(5 points)
G1/2
11
G1/2 (cable gland provided)
SW6
12 6(6 points)
G3/4
G3/4 (cable gland provided)
Others*2
Contact capacity
1
50W
SW1
2
Accessories
SW2
3 A(2 points)
Not provided
CommonSW3
4 B(3 points)
Relay barrier
return wiring(intrinsically safe
SW4
5 C(4 points)
explosion-proof structure)*3
SW5
6 D(5 points)
RD-1000 relay driverSW6
7 E(6 points)
OthersRD-1000 RELAY DRIVER
GENERAL
The RD-1000 amplifies the contact capacity of field level switches to directly drive
solenoid valves, actuators, buzzer lamps,
etc. Its integrated sequence circuit enables
automatic loading and pump control byusing the upper and lower limit contacts of
the FP-4000 series level switch (note that
the RD-1000 is not intrinsic safety).

4TOKYO KEISO CO., LTD.

STANDARD SPECIFICATION

External dimensions

Power supply			 100 or 200V AC ±10%,50/60Hz
AMB. Temp			–10 to 50˚C

Max. field supply voltage

12V DC

Max. field supply current

3mA DC

Max. contact voltage		

250V AC,125V DC

Max. contact current		

5A

Max. contact capacity		

1100V AC (Resistance load)				

120W DC (Resistance load)

Applications
1. Incrementing the contact capacity
2. Controlling loading pumps
3. Controlling unloading pumps
For details, see the Technical 		
Guidance for RD-1000 Relay 		
Driver TG-L931.

Insulation resistance		 100MΩ at 500V DC ohmmeter
Withstand voltage			

1500V AC for 1 min

Power consumption		

2VA or less

TG-L2504-E00

FP-4000 FLOAT TYPE LEVEL SWITCH

Outside dimension
Float details & outside dimensions of body
SUS316L
0.66
0.8 ✽4

Material of float
Allowable pressure [MPa](Standard) Withstand pressure test [MPa]Allowable minimum
liquid density [g/cm3]
Di- Diameter of guide pipe (d)men- Maximum outside diameter of float(D) ✽1
sion
Inside diameter of float[mm]
Height of float (H)Minimum h1 dimension [mm]Minimum interval (S) [mm]Minimum L dimension
Lowest end point + X [mm] ✽2

0.6
13.8

52

15.4

58

0.78

1.0

43 ✽7

42

PP
0.2
0.3
1.0

0.75
18
20
70

50

60

100

HPVC

PVC
0.13
0.2

22
50
25
60

48 ✽7

90
120 ✽5

90

X＝90

X＝60

∅136

0.79

1.3
16

68.2

42.6

19

100
140
150

50
80
100

X＝140

G3/4

∅136

G3/4

PFA/NBR
0.2
0.3

X＝80

∅136

G3/4

h1

L ✽6

h3

h3

h2

h2
h4

SW3

s

SW4

h4

SW3

SW4

SW4
SW5

SW5
X

X

h5

SW5

X

h5

⑤

SW2

h5

⑤Stopper

SW2

SW1

s

s

④Float

H

SW3

④

D

L ✽6

③

③Guide pipe

L ✽6

h3

②Flange

SW2

Connection

H

h1

H

①Terminal box

SW1

D

h4

Outside drawing

D✽3

Connection

SW1
h2

Connection

189

25

10

25

h1

25

189

②

189

①

d
d
Material code 0 1 2 3Material code 4 5 6dMaterial code 7✽1: Confirm that the float can be inserted into the nozzle.

2: Can be reduced depending on liquid density and the operation of contacts. Contact us for details.

✽✽3: The number of floats and stoppers in figures may differ for smaller intervals.
✽4: The test will be carried out at 1.0 MPa for floats with a design pressure from 0.53 to 0.66 MPa.

5: Available from 100 mm by special order (see ✽3)✽✽6: Max. length of the guide pipe

Structure
Weatherproof (W)Intrinsic safety (S)Flameproof (E)

[mm]

SUS

Material
PVC
PP

PFA

4900

3900

3900

3900

3900

✽7: Floats come in this size unless another size is specified.

TG-L2504-E00

TOKYO KEISO CO., LTD.

5

FP-4000 FLOAT TYPE LEVEL SWITCH

FP-4200
A single FP-4200 can detect a liquid level at multiple points by using its self-holding reed switches. The minimum point interval is 50 mm. Weatherproof, flameproof, and intrinsic safety versions are available.

Model code
FP-42

Material
FlangeStopper
Guide pipe
Float
SS400
SUS316
SUS304
SUS316L
SUS304
SUS316
SUS304
SUS316L
SUS316
SUS316
SUS316
SUS316L
SUS316L
SUS316L
SUS316L
SUS316L
PVC
PVC
PVC/SUS304
PVC
HPVC
HPVC
HPVC/SUS304
HPVC
PP
PP/SUS304
PP
PP
PTFE
PFA/SUS304
PFA/SUS304
PFA/NBR
OthersNumber of contact output (Up to 11 points are available by special order.)One point only
Independent 2 points
Independent 3 points
Independent 4 points
Independent 5 points
Independent 6 points
Common return 2 points
Common return 3 points
Common return 4 points
Common return 5 points
Common return 6 points
OthersEnclosure
Weatherproof
Flameproof
Intrinsic safety*3
Connection
JIS5K80AFF
JIS5K80ARF
JIS10K80AFF
JIS10K80ARF
3BJP#150RF
3"ANSI#150RF*1 Example: JIS10K100A to 150ARF/FF
Others*1
4" to 6"ANSI#150RF/FF
Cable entry
4B to 6BJPI#150RF/FF
G1/2*3 See the bottom of page 2.
G1/2 (cable gland provided)

0
1
2
3
4
5
6
8
Z
1
2
3
4
5
6
A
B
C
D
E
Z
W
E
S
A
B
C
D
E
F
Z
1
2
3
4
Z
1
0
1

2
Z

G3/4
G3/4 (cable gland provided)
Others*2
Contact capacity
10W
Accessories
Not provided
Relay barrier(intrinsically safe
explosion-proof structure)*3
RD-1000 relay driver
OthersTerminal arrangement
Surge suppressor
SW1
SW2
Independent
wiring

SW3
SW4
SW5
SW6
Surge suppressor

Commonreturn wiring

6

TOKYO KEISO CO., LTD.

*2 Example: 1/2"NPT,
3/4"NPT, M20

SW1
SW2
SW3
SW4
SW5
SW6

1
2
3
4
5
6
7
8
9
10
11
12
1
2
3
4
5
6
7

1（1 point）
2（2 points）
3（3 points）
4（4 points）
5（5 points）
6（6 points）

A（2 points）
B（3 points）
C（4 points）
D（5 points）
E（6 points）

TG-L2504-E00

FP-4000 FLOAT TYPE LEVEL SWITCHOUTSIDE dimension
Float details & outside dimensions of body

h5

SW3
SW4
d

SW5

SW5
SW6

X

X

H

D

SW6

X

H

SW6

10
SW2

SW4

D

h1

SW1

d
SW5

189

189

Connection

h6
L ✽3

h5

SW3

SW4

H

G3/4
25

h3

h3

SW2

d

D

φ136

SW1

h6
L ✽3

SW3

④Float④

X = 150h1Connection

h1

SW2

⑤Stopper

25
68.2
27.7
100
150
50

25

h2

SW1

③Guide pipe

27
70
29
100
150
50

h4

25

③

②Flange

26
70
29
100
150
50

G3/4

189

G3/4

h4

①Terminal box

0.9

h2

①

Outside drawing ✽3

0.8

φ136

φ136

Connection

0.8

X = 150

X = 100②

PFA/NBR
0.13
0.2

h5

21.7
75
24
70
100
50

PP
0.13
0.2

h6
L ✽3

0.7

HPVC

h3

Allowable minimum
liquid density [g/cm3]
Diameter of guide pipe (d)Di✽1men- Maximum outside diameter of float(D)sion
Inside diameter of float[mm]
Height of float (H)Minimum h1 dimension [mm]Minimum interval (S) [mm]Minimum L dimension
Lowest end point + X [mm] ✽2

PVC
0.13
0.2

h4

SUS316L
0.13
0.2

h2

Material of float
Allowable pressure [MPa](Standard) Withstand pressure test [MPa]⑤Material code 0 1 2 3Material code

456

Material code8

1: Confirm that the float can be inserted into the nozzle.
2: Can be reduced depending on liquid density and the operation of contacts. Contact us for details.
✽3: Max. length of the guide pipe
［mm］
✽
✽

Structure

SUS

Material
PVC
PP

PFA

Weatherproof (W)Intrinsic safety (S)Flameproof (E)

4900

3900

3900

TG-L2504-E00

3900

3900

TOKYO KEISO CO., LTD.

7

FP-4000 FLOAT TYPE LEVEL SWITCHOUTSIDE dimension
With outer cylinder chamberWith inner-cylinder chamber

200

A

80A or more

3×ø10
Air bleed hole

H

B

140
Standard 65A200

Guide stopper
Guide stopper

50A and less
H: Face-to-face dimension

Standard 65A (ø76.3)

A: 15mm + gasket thickness ×2
B: Between nozzle flange and chamber lower end

We can manufacture a float level switch with an outer- or inner-cylinder chamber on request.
If you prepare the outer- or inner-cylinder chamber, we can install a guide stopper.

* 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 : https://www.tokyokeiso.co.jp
8

TOKYO KEISO CO., LTD.

TG-L2504-E00