OUTPUTTING HIGH AND LOW ALARM

F-740 Series
FLOW SWITCHOUTLINE
F-740 is a flow switch with compact design which will be installed
onto horizontal pipe line through flanges. The detection part consists of a tapered detection tube and a float which moves vertically according to flow rate of fluid to be measured. The magnet
moulded at the top of float rod actuates detection magnet to drive
micro switch at the set point.
F-740 is suitable for the monitoring of flow for safety operation ofvarious plants.

STANDARD SPECIFICATION● Available size:15 ~ 150● Measuring fluid: All kinds of liquids without solid particles			 (Viscosity : 5mPa • s or less)● Fluid pressure: Max. 1.4 MPa● Fluid temp.
: –10 ~ +80˚C● Process Conn.
: JIS10KRF, JIS10KFF, ANSI class 150 orother flanges● Installation: Horizontal● Alam point: One point Low or One point High● Setting accuracy: ±5% of set flow rate
● Reset span
: Less than 30% of set flow rate
● Contact: Micro switch SPDT
● Capacity: 125 V / 250 V AC, 5 A (Resistance load)● Enclosure: Waterproof (F-74■-■■■-■■),
			 Flameproof d2G4 (EP-F-74■-■■■-■■)or Intrinsically safe (IS-F-74 ■-■■■-■■,
With a separate safety relay)● Insulation resistance : 100 MΩ or more (between live terminalsand ground)● Di-electrical strength : 1000 V AC, for 1 min between non-connected terminals			 1500 V AC, for 1 min between live terminals and ground● Amb. temp.
: –25 ~ +80˚C (Waterproof version)			 –10 ~ +60˚C (EP and IS version)● Cable entry: G1/2 (PF1/2) female thread			 (1/2 NPT adapter available on request)			 TIIS cable gland with flameproof gasket
is available on request [cable diameter:7 mm to 12 mm (standard: 10 mm to 11mm)]● Painting: Munsell 7.5 BG4/1.5 (Paint only the housing)● Accessories: Safety relay unit			 (Option for IS-F-74■-■■■-■■)

MODEL CODE
MODEL CODEF-

DESCRIPTION

----

-

Waterproof enclosure

74

EP---

-

Flameproof enclosure

IS---

-

Intrinsically safe enclosure

6-

-Left

7-

-

Right → Left

- 015

-15mm- 020-20mm- 025

-

25mm

- 040

-40mm- 050

-50mm

- 065

-65mm- 080

-80mm

- 100

-100mm- R

JIS10KRF- F

JIS10KFF- A

ANSI class150 (Equiv.)- Z

OthersFLOW DIRECTIONCONNECTION SIZECONNECTION RATING

MATERIAL→ Right

2 Class 2
3 Class 3

TG-F2459-E00
1st edition Jan 2024 K

F-740 Series FLOW SWITCHDIMENSIONSSTANDARD MATERIAL

F-740 (Waterproof) and IS-F-740 (Intrinsically safe enclosure)

EP-F-740 (Flameproof enclosure)No.

Parts NameClass 2

1Body

SCS14

SCS142Detecting Tube

SUS304

SUS316

3Float Ass'y

SUS304

SUS3164Upper Flange

SUS304

SUS316

5Lead Pipe

SUS304

SUS316

6Bolt

SS400

SS4007Gasket

8Housing

Class 3

Non-asbestos Non-asbestos
or PTFE
or PTFE
AluminumAluminum

WIRING
M3 screw terminal (F-740 and IS-F-740)
M4 screw terminal (EP-F-740)
Figure shows thecondition whenswitch is not
actuated.

ORDERING FORM
Specify the following for order / inquiry ;MODEL□□-F-74□-□□□-□□QUANTITY

Metersize

L
(mm)

(H1)
(mm)

(H2) Alarm setting flow rate (m3/h)* Mass(Approx.kg )(mm) For Low alarm For High alarm F-740 EP-F-740

15160

230

370

0.1 ~ 2.0

0.13 ~ 2.0

101420160

230

370

0.1 ~ 2.0

0.13 ~ 2.0

101425160

230

370

0.1 ~ 2.0

0.13 ~ 2.0111540

190

250

380

0.2 ~ 4.3

0.26 ~ 4.3

1550200

280

410

0.5 ~ 100.65 ~ 1065

220

290

420

0.8 ~ 13

1.0 ~ 1380

250

310

440

1.0 ~ 25100

290

310

440

1.8 ~ 40

* : Pre-set at factory. (Fixed)

FLUID NAMEDENSITY
VISCOSITY

mPa・s

PRESSURE

MPa

19

TEMPERATURE

C2024

GASKET MATERIAL

Non-asbestos

PTFE

2630

ALARM POINT

LOW

HIGH

m3/h

1.3 ~ 253236CABLE ENTRY

G 1/2

1/2 NPT

2.3 ~ 405054SPECIAL
INSTRUCTION, IF ANY* 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
2TG-F2459-E00