Liquid level is outputted by DC4~20mA analog signal.
Different types of material are available!

FP-7100 Series
LEVEL TRANSMITTEROUTLINE
FP-7100 is a magnet float type level transmitter. The liquid level isdetected by float and converted into DC4~20mA current signal.
The electronics are isolated from internal tank atmosphere bystainless steel or other pipe materials for safety.
FP-7100 is suitable for tough applications such as inflammable,
corrosive liquids or pressurized and vacuum tanks.
In addition to standard material of stainless steel, PVC, PP andPFA lined versions are available for corrosive applications.

STANDARD SPECIFICATION
Measuring objects : Liquids with density of 0.5g/cm3 or more
(Max. viscosity 600mPa·s and without sticking
and crystallization. Type of float may be limited min. density of application liquid. Refer toFLOAT AVAILABILITY LIST for details.)
Interface measurement is also applicable.
(Density difference 0.2g/cm3 or more)
Measuring range :Weatherproof
Flameproof type Intrinsically safe andexplosion-proof
250 to 5000mm

Max. pressure :Stainless steel float
PVC,PP and PFA lined float
Titanium float

1MPa
0.2MPa1.5MPa and
2.4MPaRefer to FLOAT AVAILABILITY LIST for details.
Temp. range: 0~100 oC (0~60oC for PVC float)
AMB temp: -10~60oC (-10~55oC for Flameproof version)
Enclosure: Weatherproof (equiv. to IP65),
Flameproof (TIIS Exd llB T6)(Certificate No. TC14701~TC14703),
Intrinsically safe (Ex ia IIC T4)(Certificate No. TC16353)
Power supply: DC24V (±10%)Transmission scheme : Two-wire system
Output: DC4~20mA
Max.load: 600Ω (Line resistance, resistance inside barrierincluded)
Output accuracy : ±(20+0.002H) mm H: Measuring span (mm)Resolution: 5mm
The above value indicates the resolution to detect float.
Cable entry: G3/4 x1 (Standard)
Process connection :Standard : Tank top installation through flange
JIS10K, ANSI#150, others
Minimum size of flange:3” (80mm)
Refer to FLOAT AVAILABILITY LIST for flange
size
Material availability :Flange

CARBON STEEL, SUS304, SUS316, SUS316L, PVC,PP, PFA
Guide pipe SUS304, SUS316, SUS316L, PVC, PP, PFA
Float
SUS316, SUS316L (std.), PVC, PP, PFA, Titanium
Housing
ADC12Refer to MATERIAL CONSTRUCTION for details.

OPERATION PRINCIPLE
A position sensor which consists of fine resistors and reedswitches is located in the lead pipe. The position of float whichcorresponds to liquid level is converted into resistance value.
Such resistance value is converted into analog current signal by
R/l converter to output in DC4~20mA. The output loop is 2-wiresystem and no additional power supply line is required.
Converter unit

The dead zone is required for the upper andlower sides of the measuring range. The
length of the guide pipe may differ dependingon float and material. For further details, referto the outer dimension and the float availability list.
(*1) In case the upper dead zone is 90mm andthe lower one is 100mm, the length ofguide pipe is available up to 4000mm.

Load
R/I Convertor

DC24VSensor(*1)

Measuring range 250 to 3810mm

NS

MagnetNS
Float

TG-L385-6E
RevisedOct 2016 K
1st edition Jun 1997

FP-7100 FLOAT TYPE LEVEL TRANSMITTERMODEL CODEDIMENSIONS

8" (200mm)

ZOthers

Flange rating1JIS10KRF

2JIS10KFF

3ANSI#150

4

JPI#150

5JIS5KFF

Enclosure

Connection·F100%∅dOthers

Z(217)

8(107)

6" (150mm)

H15" (125mm)

6L

5G3/4Output span4" (100mm)

h13" (80mm)

4h2

3max.∅73

W

Weather proof

EFlameproof (TIIS Exd llB T6)

S

Intrinsically safe Ex ia IIC T4 *20%70Flange size*1

∅136
25

Description

H2---123
Refer to MATERIALCONSTRUCTION

4Guide pipe, Flange
Material

56

h1: Please indicate distance between flange face and 100% liquidlevel
h2: Please indicate distance between flange face and 0% liquidlevel
Refer to the FLOAT AVAILABILITY LIST for the size of H1 and H2.
Short output span version can be also manufactured. The available short span range is shown as follows.

7OthersZ
12345Float type

Refer to FLOATAVAILABILITY LIST

67Guide pipe length
L (mm)

Possible shortest span (mm)440~954250

955~2954700

2955~5000✽

2000✽ Flameproof version is L=4000mm (Max.)

89ZOthers

Note*1 Refer to FLOAT AVAILABILITY LIST and select suitable size of flange.
*2 The intrinsically safe version must be used with a safety barrier. Please order theMTL7728+ barrier with the intrinsically safe version.

Cable gland is supplied with the flameproof version as standard as
the flameproof approval includes the cable gland. Therefore, cablegland of flameproof packing type will be attached as standard.
Standard cable outer diameter: ∅8 to ∅10.0 mm
Please inform us of the cable outer diameter if it is out of standard
size.
*Applicable cable outer diameter: Max. ∅16 mm

MATERIAL CONSTRUCTION
Material code
Part nameClass 1

Class 2

Class 3

Class 4Flange

CARBON STEELSUS304

SUS316

SUS316L

Guide pipe

SUS304

SUS304

SUS316

SUS316L

Class 5Class 6

Class 7PVC

PP

PFA/SUS

PVC/SUSPP/SUS

PFA/SUS

Stopper

SUS316

SUS316

SUS316

SUS316L

PVC

PP

PFA

Available float type

1,2,3,4,5,6

1,2,3,4,5,6

1,2,3,4,5,6

1,2,3,4,5,6789* Housing material is ADC12 (Aluminum di-casting) for all material codes

2TOKYO KEISO CO., LTD.

TG-L385-6E

FP-7100 FLOAT TYPE LEVEL TRANSMITTERFLOAT AVAILABILITY LISTDIMENSION(DEAD BAND)

CODE

Insidediameterof float

MIN. H1(mm)

MATERIAL

MIN. DENSITY(g/cm3)MAX. PRESS

MIN. NOZZLE FLANGE SIZEd=∅21.7
max. ∅73

ø2490

0.72

0.2MPa

3"

ø2690

0.6

1.0MPa5"

70

H2(min.100)1∅d=∅21.7∅

2

SUS316L(Standard)∅d=∅21.7
∅

3

ø2690

0.7

1.0MPa4"

ø241500.73

1.0MPa

4"

ø2890

0.8

1.5MPa3"

0.5

2.4MPa4"d=∅21.7∅4d=∅21.7∅

5

Titaniumd=∅21.7
∅6

ø2890

ø2890

PVC

0.85

0.13MPa

3"

ø2990

PP

0.80.13MPa

3"

ø27.7

90PFA
(The inside isfilled upwith NBR.✽ )0.95

0.2MPa(Vacuumpressure isnot acceptable.)

3"∅68PVC,d=∅267∅60PP,d=∅278∅68.2
PFA,d=∅25980✽ It is also possible not to use NBR according to conditions.

TG-L385-6E

TOKYO KEISO CO., LTD.

3

FP-7100 FLOAT TYPE LEVEL TRANSMITTERWIRINGORDERING INFORMATION
Specify the following for order or inquiry ;Terminal

Liquid nameLoad Power supply

Intrinsically safe(S)Design pressure (MPa)
Density (g/cm3)

Intrinsicallysafe side

Non intrinsicallysafe side+ -Terminal

DC24VConverter

FP-71■■■ - ■■● Model code+ -DC24VConverter

Weather proof(W)/ Flameproof(E)

Load Powersupply

Safety barrier

Power supply and load resistance

Guide pipe length Lmm

100% output point h1

mm

0% output point h2mm

Cable outer diameter(Flameproof type)∅mm● Other instructions/special notice if any

Load resistance (Ω)

1000

STANDARD ACCESSORIES (OPTION)
750● Safety barrier: MTL7728+
Although you can use other barriers, they MUST satisfy all condi-500

tions listed below.
250

1. Standard-qualified
012 16 20 24 28
Power supply (V)PRECAUTIONS FOR USE
1) When there is the flow in the liquid, there may be the malfunctions
and damage caused by the stirring machine etc. Install an innerchamber.
2) It is not suitable to use under such operating conditions as theliquid freezes, congeals or sticks.

2. RatingProtection class: ia
Group: IIC
Maximum voltage: DC28V
Maximum current: DC93mA
Maximum electric power: 650mW
Allowable inductance Lo: >2.23mH+LW(LW = value for the wire of an intrinsically safe circuit)
Allowable capacitance Co: >0.021μF+CW(CW = value for the wire of an intrinsically safe circuit)* 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
4TG-L385-6E