STANDARD SPECIFICATION,QUICK DELIVERY, COST EFFECTIVE

AC Series
FLOWMETER
GENERAL
AC is a series of direct indication type variable area
flowmeters with resins made construction.
Thanks to Union assembled construction, removal oftapered tube and internal parts is possible without
removing flowmeter itself from process piping. This
results in easy maintenance andcleaning/replacement of parts.
AIl non-metallic material construction version is available for Pure/Ultra pure water or corrosive chemical
process lines.
AC meets the requirements for quick delivery withcompetitive price.
FEATURES● Quick delivery and Cost effective● Various connection fittings available Rc thread, TS
socket or flange connection.
● Union assembling construction
Simple and easy installation and disassembling.
● Size line-up:
From 15mm (1/2") to 50mm (2").
This can cover almost all requirements.
● Non-metallic material construction available
No metallic ions are produced. Suitable for Pure/
Ultra pure water lines.
● Alarm contact available
ln addition to local flow rate indication, a reedswitch alarm contact is available. AC acts as"FLOW SWITCH"● Safety and durable design with Back-up ring:
Stainless steel back-up rings are provided for Rc
thread parts to avoid cracks during installation.
● Double graduation
L/min and m3/h double scaled.
● Custom order calibration/graduation available:
In addition to standard calibration for water, special
custom made calibration against customers' actualliquids is available. Direct reading of flow rate ofprocess liquids without compensation calculation.

MAIN APPLlCATIONS● General water treatment plants● Pure/Ultra pure water processes in Semi-conductorplants● Sewage plants● Chemical injection processes● Assembling onto various devices● Cooling water monitoring● Other liquid measurement applications

TG-F779-5E

DEC. 2002K

TG-F779-7E

MAY. 2013K

AC Series FLOWMETERSMALL SIZE VERSIONS (15mm, 20mm and 25mm)
STANDARD SPECIFICATION
Available size

: 15 mm (1/2"), 20 mm (3/4") and25 mm (1")
Calibration condition: Water (Density 1.0 g/cm3,Viscosity 1.0 mPa·s)
Special calibration/graduation
available on request.
Gas measurement is also
acceptable. Consult factory fordetails.
Scale range: Min. 0.1 to 1 L/min(AC-1501-T■ )(AC-2001-T■ )Max. 10 to 100 L/min(AC-256K- 46 ■ )Range ability: Standard 10:1
(10:2 for some versions)
Graduation: Double scaled[L/min and L/h(m3/h)]
MODEL CODE

Accuracy
Max.Op.Press.
Temp. range: ±3% F.S.
: 0.5 MPa
(Test press, 0.75 MPa)
: 0 to 50°C*: It is general data, and themaximum temperature may
change by terms of use andenvironment.

AC–Size–

Description–

1 515mm (1/2")

2 020mm (3/4")

2 525mm (1")

Range *1

Range code *2
4

Material class 1

6

Material class 2

T

Material class 3

P

Material class 4Material *3

Process connection : Rc thread,TS socket or Flange (JIS 10K)
lnstallation: Pipe line direct mount or bywall mount fixture
Connection

Alarm function: Available for 260 mm lengthversion(Refer to Table 1 for availability)

Point : 1 point High or Low
Switch : Reed switch (SPST)
Setting : Adjustable by moving switch
position
Repeatability : ±3% F.S.
Reset span : Max.±20% F.S.
Capacity : Max. volltage AC125V, DC100V
Max. current* 0.5A (AC, DC)
Max. wattage* AC10VA, DC10W*: Whichever is smaller
Connection : 50cm of lead wire with connector
Enclosure : Water tight
2TOKYO KEISO CO., LTD.

RRc thread

TTS socket

FFlange (JIS 10K)P

Not provided

WProvided *4

Wall mount fixture
Not provided
Alarm point
AProvided *5*1 : Refer to Table 1.
*2 : Specify 99 and indicate calibration condition in case of Custom
made calibration/graduation.
*3 : Refer to Table 2.
*4 : Wall mount fixture is not available for Flange ended version.
*5 : Limitation of availability applicable. Refer to Table 1 for details.

TG-F779-7E

AC Series FLOWMETERFLOW RATE TABLE
Scale range ✽1Model

Alarmavailability ✽2Size
15mm (1/2")
20mm (3/4")
15mm (1/2")
20mm (3/4")
15mm (1/2")
20mm (3/4")
15mm (1/2")
20mm (3/4")
15mm (1/2")
20mm (3/4")
25mm ( 1 " )20mm (3/4")
25mm ( 1 " )20mm (3/4")
25mm ( 1 " )20mm (3/4")
25mm ( 1 " )25mm ( 1 " )25mm ( 1 " )15mm (1/2")
20mm (3/4")
15mm (1/2")
20mm (3/4")
15mm (1/2")
20mm (3/4")
15mm (1/2")
20mm (3/4")
15mm (1/2")
20mm (3/4")
20mm (3/4")
25mm ( 1 " )20mm (3/4")
25mm ( 1 " )AC-1503-4/6
2003-4/6
1505-4/6
2005-4/6
1510-4/6
2010-4/6
1520-4/6
2020-4/6
1530-4/6
2030-4/6
2530-4/6
2040-4/6
2540-4/6
2050-4/6
2550-4/6
2070-4/6
2570-4/6
254K-4/6
256K-4/6
1501-T
2001-T
1502-T
2002-T
1503-T
2003-T
1505-T
2005-T
1510-T
2010-T
2020-P
2520-P
2030-P
2530-P1

2

0.3 to 3 L/min

20 to 200 L/h

0.5 to 5 L/min

30 to 300 L/h

1 to 10 L/min

60 to 600 L/h

2 to 20 L/min

0.12 to 1.2 m3/h

5 to 30 L/min

0.3 to 1.8 m3/h

3 to 30 L/min

0.2 to 2 m3/h

4 to 40 L/min

0.25 to 2.5 m3/h

5 to 50 L/min

0.3 to 3m3/h

14 to 70 L/min

0.8 to 4 m3/h

10 to 100 L/min

0.6 to 6 m3/h

0.4 to 4 m3/h

0.1 to 1 L/min

6 to 60 L/h

0.2 to 2 L/min

12 to 120 L/h

0.3 to 3 L/min

20 to 200 L/h

0.5 to 5 L/min

30 to 300 L/h

1 to 10 L/min

60 to 600 L/h

2 to 20 L/min

0.12 to 1.2 m3/h

3 to 30 L/min

0.2 to 2 m3/h

✽1 Duplicated flow ranges✽2  : applicable⫻ : not applicable

MATERIAL CONSTRUCTION
MATERIAL CLASSPARTS

1NAME
AC-123456789UNION NUTTAPERED TUBEFLOATFLOAT RODO RINGFITTING
BACK-UP RING
ALARM FITTINGALARM SWITCH*1*1*1*1*1*1*2*3*32-4AC-

3-6AC-

4-T

AC--P

PVC
ACRYL
SUS304
SUS304NBR

SUS316
SUS316PTFEPVC
FEP COVERED (SUS304 CORE)
FPM
PVC
SUS304
SUS304ASSEMBLY*1 : Wetted parts*2 : Provided only for Rc thread version*3 : Applicable only for alarm version

TG-F779-7E

TOKYO KEISO CO., LTD.

3AC Series FLOWMETERDIMENSION

11A5AA

55

Detail drawing of“A” part

23366L1L22

Detail drawing of“A” part

444L312

Detail drawing of“A” part
36dF

TS SOCKET VERSION●●

Rc THREAD VERSIONMODEL CODE

●FLANGE VERSION

Rc THREADd1A

54L282

Detail drawing of“A” part

936d●

4TS SOCKET WITH ALARM VERSIONTOKYO KEISO CO., LTD.

AC-1503-4/6
AC-1505-4/6
AC-1510-4/6
AC-1520-4/6
AC-1530-4/6AC-2003-4/6
AC-2005-4/6
AC-2010-4/6
AC-2020-4/6
AC-2030-4/6
AC-2040-4/6
AC-2050-4/6
AC-2070-4/6
AC-2530-4/6
AC-2540-4/6
AC-2550-4/6
AC-2570-4/6
AC-254K-4/6
AC-256K-4/6
AC-1501-T
AC-1502-T
AC-1503-T
AC-1505-T
AC-1510-T
AC-2001-T
AC-2002-T
AC-2003-T
AC-2005-T
AC-2010-T
AC-2020-P
AC-2030-P
AC-2520-P
AC-2530-P

L1

TS SOCKETL

Rc 1/2

ødL2

Rc 3/4F

L3

15A
JIS10K

22.3

220 20

FLANGE ENDED

22030020A
JIS10K

26.3

25260260350

Rc 1

29 32.3

25A
JIS10K

Rc 1/222.3

15A
JIS10K

220 20Rc 3/422030020A
JIS10K

26.3

25260
Rc 1260
29 32.3

350
25A
JIS10K

TG-F779-7E

AC Series FLOWMETERMEDIUM SIZE VERSIONS (40mm and 50mm)
STANDARD SPECIFICATION
Measuring object: Liquids(Avoid the opaque liquids. They
might prevent visibility because ofthe direct reading of float throughtransparent tapered tube.)
Available size
: 40mm (1 1/2") and 50mm (2")
Scale Range:1) Standard pre-fixed range (Water density 1.0g/cm3,Viscosity 1.0mPa·s)
Size

Standard Range 1 *1

Standard Range 2 *240mm

1 to 10 m3/h

0.6 to 6 m3/h

50mm

2 to 20 m3/h

1 to 10 m3/h

*1 : Applicable for the flowmeter with the SUS316 float having a float rod.
*2 : Applicable for the flowmeter with the resin made float (PVC) not having afloat rod.

2) Possible scale range for Custom madecalibration/graduation(Flow rate is indicated by water flow)● ln case of SUS316 float with float rod

50mm: 1 point High or Low: Reed switch (SPST): Adjustable by moving switch
position (10 ~ 50% of full scale)Setting accuracy : ±2% F.S.
Reset span
: Max.20% F.S.
Capacity:Max. voltage
AC125V, DC100V
Max. current
0.5A (AC,DC)
Max. wattage AC10VA, DC10W
Enclosure: Water tight (IP67)

Possible scale range

Size
40mm

Alarm function
Point
SwitchSetting

Min.

0.5 to 5 m3/h

Max.

0.8 to 8 m3/h *3Min.

0.8 to 8 m3/h

Max.

1.4 to 14 m3/h *4*3 : Max. 1.0 to 10m3/h is acceptable for liquids with 1.0mPa·s viscosity.
*4 : Max. 2.0 to 20m3/h is acceptable for liquids with 1.0mPa·s viscosity.

● ln case of Resin made float (PVC) without float rod

40mm50mmMin.

0.4 to 4 m3/h

Max.

0.6 to 6 m3/h

Min.

0.7 to 7 m3/h

Max.

1

Range abilityAccuracy
Max. Op. Press.
Max. liquid temp.
Processconnection

to 10 m3/h

: Standard 10:1
: ±2% F.S.
: 0.7MPa(Test press. 1.0MPa): Acryl tapered tube version 50°C: 1) TS socket2) Rc thread3) Equivalent to JIS5K flange(only for PVC)
4) Equivalent to JIS10K flange
5) Equivalent to ANSI#150 flange(only for PVC)
6) Others

Degreace treatment : On request

TG-F779-7E

MODEL CODE

Possible scale rangeSize

AC–––Description

40mm (11/2")
50mm (2")
STANDARS SCALE 1
1ScaleSTANDARS SCALE 22range
CUSTOM MADE
9– P
PVC
Body material
Acryl
Tapered tube material
A
SUS316 (With rod)
6
Float material
PVC (No rod)
P(Float rod)
Others
Z
NBR
N
FPM
F
Seal material
OthersZ– 1
TS socket– 2
Rc thread– 3
JIS5K flange
Process connection– 4
JIS10K flange– 5
ANSI#150 flange– 9Others
Not provided
0Alarm point
1 point provided
A0 Not provided
Degrease teatment1 provided
The float rod is provided for the alarm contact version.
Size

4 05 0TOKYO KEISO CO., LTD.

5

AC Series FLOWMETERDIMENSIONTS SOCKET CONNECTION

FLANGE CONNECTION

11223LL

354SizeL

40mm

51050mm

5304ødøCøDSize

LC

40mm

44550mm

460

Above figure is for SUS316 float with float rod version. Nofloat rod is provided for other float material versions.

Dd65

97

48.5

35

77

121

60.6

38

Rc THREAD CONNECTION

12MATERIALL

3No.

SizedL

40mm

Rc11/2

445

50mm

Rc2

460

C and D are the same asfor TS socket version

64TOKYO KEISO CO., LTD.

øCPart name

Available material

1Body, fittings

PVC

2Tapered tubeAcryl

3Float

SUS316, PVC

4O ring

NBR, EPDM, FPM, OTHERS

5Float rod

SUS316

øDTG-F779-7E

AC Series FLOWMETER

AC-T NON-METALLIC TYPE WITHOUT PARTICLES ANDMETALLIC IONSALL PARTS CONSISTING OF FLUOROCARBON RESIN
GENERAL
AC-T is direct reading type variable area flowmeter
whose wet parts consist of all fluorocarbon resin.
The flow rate is indicated directly by the float locationon the measuring scale. The simple and rugged
construction offers you reliable operation and easy
maintenance for various services.
The optional alarm contact serves for flow stoppage
alarming in addition to flow monitoring.
FEATURES● All wet components consisting fluorocarbon resin
eliminate the effluent of metallic ions in process
liquid.
● Eliminating float rod, the ribbed taper tube prevents
the generation of particles and assures stable
movement of the float.
● Not only for pure water or ultra-pure water, thisanti-corrosion flowmeter is suitable also for othercorrosive chemicals.
● The union construction makes overhaul, assemblyand cleaning easier.
● Easy to mount on the equipment and packaged
units thanks to simple and compact construction.
● Alarm contact can be added easily on the indicator.
STANDARD SPECIFICATION
Available size
Measuring object
Scale range

Range ability
Accuracy

TG-F779-7E: 15mm (1/2") and 20mm (3/4''): Liquids (Water density 1.0g/cm3,Viscosity 1.0mPa·s): 1) 2 to 20L/min (15 and 20mm)2) 3 to 30L/min (15 and 20mm)3) 4 to 40L/min (20mm)4) 5 to 50L/min (20mm)
Other special calibration/graduation on request: Standard 10:1
: ±3% F.S.

: 0.49MPa (at 20oC)
The maximum operating pressure changes according to thefluid temperature. For instance,
the pressure becomes as low
as 0.2 MPa at 80oC. Consult
Tokyo Keiso for the details.
Max. liquid temp. : 90°C (Max. 0.15MPa)
The pressure and temperature deviation fromdesign values causes measurement error.
Please specify the pressure and temperaturewhen ordering.
Max. Op. Press.

Process connection : Standard : 15mm (1/2") and20mm (3/4")
welding (TS socket) or Rc thread
Option : Other connections
are available. Consult
Tokyo Keiso.
Flow direction: Bottom to Top
Material: Fluorocarbon resin
See STANDARD MATERIALTABLE for details.
Alarm function: Available as option
Point: 1 point High or Low
Switch: Reed switch (SPST)TOKYO KEISO CO., LTD.

7

AC Series FLOWMETERMODEL CODEDIMENSION

AC-T

Description–Connectionsize

1515mm (1/2")

2020mm (3/4")
12 ~ 20L/min

2

3 ~ 30L/min

34 ~ 40L/min

45 ~ 50L/min

9Others

12657Connection type3L

Scale range *1Welding (KGF type)

2Rc thread

9Others452–

0Not provided–1Provided

6

Alarm contact

1Connection size 20mm (3/4") is available for all scale ranges.
Connection size 15mm (1/2") is available only for all Scale ranges
1 (2 ~ 20L/min) and Scale range 2 (3 ~ 30L/min).

ød

STANDARD MATERIAL TABLE
Part name

Material

1SOCKETPVDF

2UNION SOCKET

PVDF

3

TAPERED TUBE(Ribbed)

PFA

4

FLOAT

PVDF *

5

FLOAT STOPPERPFA

6O RINGFPM (fluoric rubber)

7

SCALE PLATEAcryl

AC-T15-

AC-T20-Nominal diameter
LScrew

15220
Rc1/2

20220
Rc3/4Welding type

unit : mmNo.

Tube outsidediameter15(20)

20(25)

d19.2

24.2

16.5

18

KGF type

KGF type* : SUS316 weight moulded

PRODUCT MASS

FOR INQUIRY

400g

Please specify followings for your inquiry.
Model code

AC-T -If alarm contact is required,
Alarm set point at_______L/min
Other requirements* 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
8TOKYO KEISO CO., LTD.

TG-F779-7E