CDT1000 SeriesMulti-Digital Flowmeter

OUTLINE
CDT1000 is a new series of flowmeter which combines a multidigital indicator with a pitot tube.
CDT1000 detects the differential pressure exerted by flow velocity in thepitot tube inserted in the pipe and outputs flow rate with digital indication.
Applicable sizes range from 20mm to 450mm dia.
The principal applications are for hot and cooling water lines for air
conditioning in apartment and office buildings and other facilities.

FEATURES❏ Easy installation❏ Installation simply by making a 35mm dia. hole and welding
20mm (3/4") socket at measuring point of existing pipes. This ismost convenient for renewal use when additional flow sensor isrequired on the line.
❏ Low pressure drop
❏ Wide measuring range
Measuring range selectable depending on application❏ Applicable for both horizontal and vertical pipes.
❏ Various indicator functions selectable from the following:
Battery type, Current Output type (2-wire 4 to 20mA) and Alarm
Output type❏ Indicator parts are interchangeable.
❏ Easy to see because of large LCD display❏ Compact size and lightweight❏ Quick delivery● Mass: Approx. 2kg● Indicator type function (All types with indicator)

Type
Battery type
Current output type

Function
Battery drive, Indication only
4-20mA DC (2-wire)2 points + 4-20mA DC

STANDARD SPECIFICATION

Alarm output type● Measuring Fluid: Water, Cold water, Hot water● Max. Pressure: 2MPa● Max. Allowable Differential Pressure: 700kPa (Bias pressure)
Not applicable for vacuum service● Temperature and Relative Humidity
Fluid temperature: -10 to 70oC
Use PVC lining and resin tubes within
respective allowable temperature ranges.
Ambient Temp.
: -10 to 50oC < 85%RH
Storage Temp.
: -20 to 60oC < 85%RH(Without icing, without condensation)● Process pipe size
: 20mm(3/4") to 450mm(18")● Adaptation pipe
: Carbon steel pipe for piping (JIS G 3452)[1MPa class]
Carbon steel pipe for pressure piping(JIS G 3454 Sch40) [2MPa class]Note : If pipe other than above is required, special
calibration may be necessary.
Consult factory for details.
● Accuracy: std. 5% F.S., (±10% F.S. for a flow rate ofless than 30%)
● Measuring range: Flow rate from 10 to 100% of full scale● Low cutoff: Less than 7%● Protection class: IP65 (JIS C 0920)(Except for the air introduction port at thebottom of housing.)

Alarm 1-point +totalized pulse + 4 to20 mA● Indication function

Flow rate indication
3-1/2 digits LCD (Height 18mm) : 0 to 1999
(FFF appears in case of out of range)
11 segment bar graphTotalizer indication
7-1/2 digits LCD (Height 5mm): 0 to 19999999
Indication interval: 1s (Sampling 0.5 sec)
Filter: 0,2,4,8,16,32s (Moving average)
LCD back light: Continue 10s after operation(Except current output type)● Material of Pitot tube parts :Refer to [OUTLINE DIMENSION] and [MATERIAL]● Material of wetted parts of indicator
Diaphragm: 316L SSBody: 316SS
O-ring: Fluorine rubber (JIS Class4-D)
Drain hole sealing : Alumina ceramics● Material of indicator body: Aluminium alloy● Painting: Melamine resin painting (Indicator housing)● Painting color
Front: Wine red (Munsell 10RP3/8)
Rear: Light gray (Munsell N7.5)● Process connection : R3/4" (M)● Installation posture: Front vertical installation

TG-F976-0E

APR. 2002

TG-F976-6ESEP. 2013K

CDT1000 QUICK FLOW for Air Conditioning Application Digital Flowmeter● Standard full scale range [SGP,STPG(40~450mm)pipe]

Processpipe size
mminch

2025
32
4050
65
80
100
125

3/4
1
1-1/4
1-1/2
22-1/2
34
5150
200
250
300
350
400
450

Full scale range [L/min]● Specification and function of each type

Inside dia. (mm)Code1MPa2MPa05102050
70
120
130

70
100
160
200

100
150
250300

(26)
(34)
(43)
41.6200
400

300
500

45070052.967.952.7
65.9

500
90013007001300
2000

1000
1800
2800

80.7
105.3
130.8

78.1
102.3
126.6

6

2000

3000

4000

155.2

151.0

8
10
12
14

3500
5000
8000
10000

5000
7000
10000
13000

7000
10000
16000
20000

204.7
254.2
304.7
339.8

199.9
248.8
297.9
333.4

16
18

13000
16000

18000
20000

25000
30000

390.6
441.4

381.0
428.6

Refer tofollowing
table
41.2

● Standard full scale range [2MPa version = 20~32mm]

Process
pipe size
mm

inch

2025
32

3/4
11-1/4

Full scale range [L/min]

Inside dia.
(mm)

1050
70

Code
2070
100

50
100
150

21.4
27.2

120

160

250

35.52) Current output type
Power supply:24V DC10%Output:4-20mA DC (2-wire)
Max. load:600Ω
Output accuracy: 0.5% F.S. at 23oC
Response:Less than 2 s (At filter setting 0)
3) Alarm output type
Power Supply: 24V DC 10%
Power Consumption : Less than 25mA
Alarm Output: Open Collector x 2 (Independent)(When the totalized pulse output option isadded, the alarm output can be set only ateither a high or low limit.)
Totalized pulse output: Pulse width : 200 to 300ms
LoadResponse
Alarm setting
OutputMax. load
Output Accuracy● Cable entry

Frequency : Less than 1Hz: Less than 30V DC / 80mA
: Less than 2 s (At Filter setting 0): Selectable (high / Low),
Reset Span: Adjustable / Min. 1digit: 4-20mA DC: 600Ω
: 0.5%F.S.at 23oC

TypeCable entry

Current output type

Full scale range [L/min]05

Code1020

Inside dia.
(mm)

mminch

32

1-1/4

75

100

150

29.5

40

1-1/2

50
65

22-1/2

100
170

130
250

200
350

34.7
46.2

80

3300
450

400
650

600
900

59.7
70.9

100
125
150

456800
1200
1700

1000
180025001600
2500
3500

95.2
119.7
142

TOKYO KEISO CO., LTD.

Alarm output type
Acceptable cable outside diameter3∼8mm: YesNote1) The inside diameter of pipe size 20 to 32mm in 1MPa is based on
three-way socket (JIS B 2301).
(It is possible to attach three-way socket as option.)
2) The inside diameter of pipe size 20 to 32mm in 2MPa is based on
three-way socket (Sch.40). (Supplied by customer.)3) 40mm or more, the inside diameter of in 1MPa specification isbased on Carbon steel tube for ordinary piping SGP (JIS G3452),
and the inside diameter of in 2MPa specification is based on
Carbon steel pipes for pressure piping STPG (JIS G 3454 Sch40).
4) Full-scale flow rates for the PVC lining pipe are calculated basedon the inner diameter of ESLON ESLOCOAT LX tee fittings(Sekisui Chemical Co., Ltd). If you use other fittings, additional
calibration is needed. Please determine the values of “D” and“L” in the figure at the end of this document and the kind of pipe
and then contact us.

2:Alkali battery (LR6) x 2 pcs.
:Approx. 2 years at 23oC
Auto power off mode selectable
Low Battery monitor as standard

Battery type

● Standard full scale range [PVC lined pipe]

Processpipe size

1) Battery type
Battery
Battery life: No

OPTION (Factory set)
● Totalizing indication

Selection of totalizer function● Totalized indication + Pulse output

CODE : /TLZCODE : /PULOPTION (Others)● Refer to “MODEL CODE”

TG-F976-6E

CDT1000 QUICK FLOW for Air Conditioning Digital Flowmeter

WIRING DIAGRAM[Current output type][Alarm output type]
Alarm output (1)/(2) : Open collector
Load: Less than 30V DC/80mA (each)++ - DC24V

OUT1Receiver

4-20mA +---(1)(2)--DC24V++4-20mA

ANA OUT

Receiver+Alarm Alarm+ outputoutput

OUT2(OUT1 is used for the pulse output when the totalized
pulse output option is added.)

MATERIAL and OUTLINE DIMENSION

CDT12 □□
(0.5)

93(184)
(84)

３UNIT
L/min

72

500ＬＲＺ ｋＰａ

SETADJ.
Aoff

４l
５６(39)

ＯＵＴ２２(95)

ＯＵＴ１
100

３(39)

１(100)

R3/4(28)

MODE

Drain hole

Cable entry(Refer to approval drawing for the dimension I.)

3521[OPTION]
 Socket

CDT14 □□

3/4

ＯＵＴ２100

１
Air ventscrew

UNIT
L/minA

34.5（110）
(84)

Rc3/4

39A93

ＯＵＴ１

SGP three-way socket(JIS B 2301/CFTW)

8(CFSW)

B

2-d

72

500

SETADJ.
Aoff

ＬＲＺ ｋＰａ

Dimension of three-way socketdA
B
Size
20mm Rc3/4
33
33
25mm Rc1
3536
32mm Rc11/4 36
41（199）

MODE

（47）

（127）

（41）

２(66.5)

(39)

３No.

Part Description

Indicator body

Aluminum alloy

Isolation valve

SCS 14Valve Shaft

SUS 316４５

R3/4l６

MaterialO-ring

NBRVent valve

SUS 316

Cap nutSCS13



Fittings

SCS 14

Pitot tube

SUS 316



SocketSS 400 *1

8Three-way socket

FCMB *1,2*1

It is possible to attach standard material forsocket (SS400 or FCMB) if requested, butmaterial besides these materials shall beprovided by customer when needed.
*1,2 For the 2 MPa rating, the parts made of
proper material such as S25C be selected
and provided by customers considering
pipe sch40.

TG-F976-6E

TOKYO KEISO CO., LTD.

3

CDT1000 QUICK FLOW for Air Conditioning Application Digital Flowmeter

CONSTURUCTIONPipingSocket

CDT1 2 ■ ■Fixing by screw
O-ring(P38)
O-ring(P8)Vent valve(4pcs)

Fittings

Cap nut
O-ring(S31.5)ngldi

We

Pitot tubegwin

Vent plug(4pcs)

reScw

SCS14

Equalizing pressure valve
with O-ring (P4)
Bolt, Washer
M5 x 20(4pcs)

creys
gb
niix

Fw
creys
gb
nix
Isolationvalve
FiO-ring(S4)

Blind plug

OU

100

Hexagon socket head cap screws
M4 x 14(4pcs)

T1OU
T2500

Indicator

UNIT

SE
ADJ.T
AoffLRZ

MODEm3/hcm3/hkPaoC

CDT1 4 ■ ■Hexagon socket
head cap screws
M4 x 14(4pcs)

OU
T1100

OU

50

T20Indicator

UNITSEADJ.T
AoffLRZ

MODEkPa

m3/hcm3/hoC

Equalizing pressure valve
with O-ring (P4)

[Option]Blind plug

CODE : /HGC
CAUTIONS ON INSTALLATION● Avoid direct rays and equip with a protection cover orFixing by screw

install in the place which a direct rainstorm does notsplash.
(If protection cover is used, it may be difficult to read thedisplay.)O-ring(S4)Isolation valve

Fixing by screw● Protection cover (For indicator protection)

Vent valve (2pcs)
Vent plug (2pcs)
Bolt, Washer
M5 x 20(4pcs)
O-ring(P8)O-ring(P38)
Pitot tube

O-ring(S31.5)
Cap nut

Protection coverFixing by screw
Fittings
Screwing
Welding

OU
T1

100

OU

50

SocketT20UNIT

SE
ADJ.T
Aoff

m3/hcm3/h

MODEoC

Piping

4

TOKYO KEISO CO., LTD.

TG-F976-6E

CDT1000 QUICK FLOW for Air Conditioning Digital Flowmeter

MODEL CODE
CDT1■ ■0 - ■ ■ ■ - ■ ■Installationtype24Pressure rating■L-A / ■ ■ ■Description

1020- 020
- 025
- 032
- 040
- 050
- 065
- 080

Vertical type
Carbon steel pipe for piping (JIS G 3452)
Carbon steel pipe for pressure piping (JIS G 3454 Sch40)

80mm
100mm
125mm
150mm
200mm

- 100
- 125
- 150

Main pipe size

NoteStandard type

Horizontal type
Perpendicular type1MPa class
2MPa class
20mm
25mm
32mm
40mm
50mm
65mm

- 200
- 250
- 300
- 350
- 400
- 450

Nominal diameter for installation pipe

250mm
300mm
350mm
400mm
450mm
- 05- 10- 20- 50

Full scale range

456

Indicator type
Application

LVersion/TLZ/PUL/HGC/CFT/CFS/PL
Additional function

Select for the code of Standard full scale range

Battery type
Current output type
Alarm output typeFor liquid

Battery drive
4-20mA DC (2-wire)2 points + 4-20mA DC

Version code
Totalization indicator
Totalized indication +Pulse output
With protection coverat display partThree-way socket forpiping (CFTW)-A

Option*Flow rate range

Applicable for alarm output type only.

Attachment is possible in case of the quality ofthe material FCMB and 1MPa specification(20 to 32 mm)

Welding sockt (CFSW) Available only for SS400 (More than 40 mm)
PVC lined pipe specification Inform us L and D dimension of figure in page 6.
Not necessary if above-mentioned code is available.
Blank Not provided
Consult about the details of the pipe material orProvided/Z
Pitot-tube length.

*Note) Insert “/ ” between each code when the plural codes are selected.
Code example 1: [In case optional code is not selected]
Horizontal installation, Connection size 50mm, 1MPa class, Full scale flow rate code[10], Battery drive type
Model code: CDT1210-050-104L-A
Code example 2: [In case all of the possible optional codes are selected]
Vertical installation, Connection size 100mm, 1MPa class, Full scale flow rate code[05], Current output type, Totalization
indicator, indication, With protection cover at display part, With welding socket
Model code: CDT1410-100-055L-A/TLZ/HGC/CFS
Code example 3: [In case piping type specification]
Horizontal installation, Connection size 80mm, Pipe material SUS304TPD, 1MPa class, Full scale flow rate code[20], Current
output type, Totalization indicator, With welding socket
Model code: CDT1210-080-205L-A/TLZ/CFS/Z
When the piping type is specified as seen in the above Code example 3, it will be additional function.
Moreover, in case socket and three-way socket are prepared by customer, Pitot tube length may be changed by installation dimension. This
will be an additional function.
Accordingly the last letter of model code will be “/Z” in case of such special specification as not mentioned in the above model code.
TG-F976-6E

TOKYO KEISO CO., LTD.

5

CDT1000 QUICK FLOW for Air Conditioning Application Digtal Flowmeter

INSTALLATIONSUGGESTIONS1) Keep the upstream and downstream straight runs as required.

• The model CDT 12(4) 10 flowmeter is calibrated based on the2) To install the flowmeters,

inside diameter of JIS G3452 SGP. For the model CDT 12(4) 20,

Drill a hole of 35mm diameter into the pipe having more than orcalibrated JIS G3454 Sch.40.

equal to 40mm diameter.

Consult TOKYO KEISO if pipes are different from above.

Use the three-way socket for the pipe having less than or equal

Specific calibration is required.
• Straight length for upstream and downstream is required forto 32 mm diameter.
3) Select and drill the hole at right place so that the final fixed pos-accurate measurement as shown in the following table,ture of indicator should be horizontal.
4) Weld the socket to the drilled hole. The centerline of the socket
must be in line with the one of the pipe.
5) Screw the CDT1000 into the welded socket to complete theinstallation.

Piping

CDT12■■

Upstream

Downstream

10D

5D

40mm
5DNote) D : Inside diameter of main pipe.

3D• Run the fluid fully in the pipe. Otherwise it could not be measured.

CDT14■■• Vent the air before measurement.
Rc3/4

Three-way socket

Size
32mm

See CDT1000 Instruction Manual for further details.

Three-way socket(20 to 32mm)

Three-way socket

LINING AND OTHER PIPING

Straight piping (40mm)

Rc3/4

39

3/4

3/4

Ø35

Ø35

• The full scale flow rates are based on when the flow runs throughthe inside diameter of the pipe lined with PVC which consists of atee joint of the Eslo coat LX made by Sekisui Chemical Co.’sEslon®.
If you use the tee joints with the different inside diameter fromabove, the extra calibration is required.
For further consultation inform us of the dimension “D” in thefollowing drawing.
• When the main pipe size is between 32 mm and 150 mm, provide
either one of the following tee joint and bushing assembly tomake the connection size 20 mm:— tee joint with 25 mm in branch line + A bushing with 25 mm x20 mm— tee joint with larger than 25 mm in branch line + One or morebushings in series to make the final connection size 20 mm
For further consultation inform us of the dimension “L” in thefollowing drawing.
• Piping can be customized.
• Please determine the values of “D” and “L” in the figure
below and the kind of pipe and then contact us.

39Rc3/4

ØDBushing(R1 x Rc3/4)
32mm
LLining piping (PVC)ØDL

Other piping

ORDERING INFORMATION
Indicator
1. Model code
2. Quantity* 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
6TG-F976-6E