MULTI-FUNCTION DIGITAL FLOWMETER

HDT1000 Series
OLIFLOMETEROUTLINE
HDT1000 is a new series ORIFLOMETER combining orifice platewith multi-digital indicator.
HDT1000 detects differential pressure exerted by flow velocity on
the orifice plate and displays it digitally as flow rate.
Available meter sizes range from 15mm to 300mm dia.
The principal applications are hot and cooling water, air flow measurement and so forth.

FEATURES❏ Excellent cost performance
Flow rate measurement is possible at low cost for medium orlarge diameter pipes.
❏ Compact design
The indicator part is very small and saves mounting space.
❏ Easy installation
Available various process connections of “Screw”, “Flange”, and“Wafer” to meet all field possible requirements and for easy pipeinstallation.
❏ Applicable for both parallel and vertical pipes.
❏ Various functions of indicator●Any type can be chosen out of the following:
Battery type, Current output type (2-wire 4-20mA DC) andAlarm output type●Indicator part is interchangeable● Temperature and Relative Humidity

Fluid temperature: -10 to 70oC

Ambient Temp.

: -10 to 50oC < 85%RHStorage Temp.

: -20 to 60oC < 85%RH			 (Without icing, without condensation)● Main pipe size

: 15mm to 300mm			 (350 to 500mm ; Consult factory for details)● Flow range: Refer to [FLOW RANGE]● Process connection

Screw connection: Rc thread			 NPT thread❏ Easy to see because of large LCD display			 [Main pipe size 15mm (1/2”) to 100mm (4”)]

MAIN APPLICATIONS		Flange connection: JIS5K/10K/20K FF/RFANSI/JPI CLASS 150/300			[Main pipe size 15mm (1/2”) to 300mm (12”)]❏ Air conditioner water and air line❏ Cooling water line

Wafer connection		

❏ General process line in medium and large diameters: JIS5K/10K/20K
ANSI/JPI CLASS 150/300		
[Main pipe size 15mm (1/2”) to 300mm (12”)]❏ Sewage disposal process● Indication accuracy: ±3% F.S.

❏ Pure water device● Measuring range: Flow rate from 10 to 100% of full scale❏ Fire pump performance test

● Low cutoff: Less than 7%❏ Blower performance test

● Protection class: IP65 (JIS C 0920)		

(Except the air introduction port at the bot-

● Material: Refer to [MATERIAL]

INDICATOR SPECIFICATIONRefer to the DT series TECHNICAL GUIDANCE TG-EM125E for thedetails of digital indicator.

tom of housing.)● Painting

Measuring tube
Indicator housing

STANDARD SPECIFICATION● Measuring Fluid: Liquid (equivalent to water) or Gas● Pressure condition

Fluid pressure: Polyurethane painting			 (No painting in case of stainless steel): Max. 2MPa

Allowable differential pressure: 200kPa (one-sided)				(700kPa for a differential pressure				range of 5kPa or more): Melamine resin painting● Painting color

Measuring tube

: Jade green (Munsell 7.5BG4/1.5)

Indicator housingFront: Wine red (Munsell 10RP3/8)

Rear: Light gray (Munsell N7.5)● Installation posture: Front vertical installation

Incompatible with negative pressure

TG-F2494-E00
1st edition Jun 2024 K

HDT1000 Series ORIFLOMETER● Upper/lower straight tube length● Cable entry

In order to make measurement in the predetermined accuracy, thestraight run of tube is required. The required straight run of tube
varies, depending on the diameter ratio of contraction device andthe piping shape. Refer to JIS Z 8762-2: 2007.
The straight run of pipe varies, depending on the piping
condition and the contraction ratio of diameter, and thefollowing is just the outline.

TypeCable entry

Battery type
Current output type
Alarm output type
Acceptable cable outside diameter∅3∼8mm: Yes: No[Reference]
Straight run of pipe(Upstream)
Straight run of pipe(Downstream)

Elbow • Tees Valve (Gate valve fully opened)
10D

12D

4D4D

● Totalizing indication

Selection of totalizer function• ‘D’ stands for the inside diameter of pipe
• Straight run of pipe means the length from the upstream face of oriﬁce plate.
● Indicator type function (All types with indicator)

TypeFunction

Battery type

Battery drive, Indication onlyCurrent output type4-20mA DC (2-wire)2 points + 4-20mA DC

Alarm output type

OPTION

Alarm 1-point +totalized pulse + 4 to20 mA		CODE : TLZ● Totalized indication + Pulse output		

CODE : PUL

CAUTIONS ON INSTALLATION● Avoid direct rays and equip with a protection cover or install in theplace which a direct rainstorm does not splash.
(If protection cover is used, it may be difficult to read the display.)● Indication functionFlow 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 toIndication interval: 1s (Sampling 0.5 sec)

Filter: 0,2,4,8,16,32s (Moving average)

LCD back light: Continue 10s after operation

Protection cover

19999999			 (Except current output type)

OU

T1

100

OU

50

T20UNITSEADJ.TAoff● Specification and function of each type

LRZMODEkPam3/hcm3/hoC1) Battery type
Battery: Alkali battery (LR6) x 2 pcs.

Battery life: Approx. 2 years at 23oC			 Auto power off mode selectable			 Low Battery monitor as standard2) Current output type

CAUTIONS FOR INSTALLATION ORIENTATIONPower supply: 24V DC±10%Output: 4-20mA DC (2-wire)

to the ground.

Max. load: 600ΩHorizontal installation may cause inaccuracy or malfunction.

Output accuracy: ±0.5% F.S. at 23oC

Response: Less than 2 s (At filter setting 0)

● Install
the measuring tube with the indicator display perpendicular3) 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 is			 added, the alarm output can be set only at			 either a high or low limit.)
Totalized pulse output : Pulse width : 200 to 300ms			 Frequency : Less than 1Hz
Load: Less than 30V DC / 80mA

Response: Less than 2 s (At Filter setting 0)

Alarm setting: Selectable (high / Low),

GroundGround			 Reset Span: Adjustable / Min. 1digit

2Output: 4-20mA DC

Max. load: 600ΩOutput Accuracy: ±0.5oC%F.S.at 23oC

TOKYO KEISO CO., LTD.

TG-F2494-E00

HDT1000 Series ORIFLOMETER

MATERIAL
Part Description

Material class 1
SCS14

15∼40mm

SUS304

Others

SGP•SS400

Flange connection
Measuring tube

15∼200mm
OthersOriﬁce plate

15∼100mm

15∼100mm

SUS304

OthersSUS316SCS14for JIS10K

SUS304

SUS304SCS14

15∼200mm

SCS14for JIS10K

SS400

Material class3

SCS14

15∼200mm

SCS14

Wafer connection for JIS10K
Wetted parts

Material class 2

Screw connection 15∼100mm

Others

SUS304

SUS316
SUS316

Body

SCS14

SCS14

SCS14Isolation valve Shaft

SUS316

SUS316

SUS316NBR or FPM

NBR or FPM

NBR or FPM

O ringIndicator

Diaphragm

SUS316L

Body

SUS316

O ringFPM

Drain hole seal

Alumina ceramics

Indicator body

Aluminum alloy

FLOW RANGE
Maximum ﬂow rate
Main pipe size

Liquid m3/h

Gas m3/h (nor)(Density 1.0g/cm3, Viscosity 1.0mPa・s)(0℃・1atm Air)

Min.

Max.

Min.

15 mm

0.23

2.3

3.4

Max.
37

20 mm

0.31

5.2

4.6

85

25 mm

0.45

8.8

5.5

140

32 mm

0.51

14.7

6.7

230

40 mm

0.69

198.6

32050 mm0.75

321052065 mm1.25315860

80 mm

1.774211200

100 mm2.9127352000

125 mm

4.4

196543200

150 mm

6.2276804500200 mm11480

1407800

250 mm17740

21012000

300 mm

24106030017200◆ The maximum flow rate of upper table are for liquid application◆ The maximum flow rate for gas of upper table are shown by theequivalent to water (Density 1.0g/cm3 and Viscosity 1.0mPa • s). If

flow rate of AIR, at 0oC, 1atm. If actual fluid condition has different

actual fluid condition has different values, conversion calculation

value, conversion caluculation is required per following formula.

is required per following formula:		Qw =Q × γ

Conversion calculation			

Qw		 : Water converted flow rate		 QA = Q × Cγ × Ct × Cp			Q		 : Flow rate of actual fluid			 QA		 : Converted Air flow			γ		 : Density of actual fluid (g/cm3 )◆ The calculation of figures in the above flow range table has been			 Q		 : Flow rate of Actual Gas			 Cγ		 : Cγ = γ/1.293						 [γ = Density of the Gas, kg/cm3(nor)]made on the premises that SGP, a JIS code name for a carbon			steel pipe for ordinary piping, is used for main pipes. In case of						 (t = operating temp., oC)

main pipes other than SGP, multiply the above liquid quantity by			 Cp		 : Cp =(the inner diameter of the main pipe used ÷ the inner diameter of						 (p = Operating press, MPa)

Ct		 : Ct =(273+t)/273
0.1013/ (0.1013+p)

a SGP pipe)2.

TG-F2494-E00

TOKYO KEISO CO., LTD.

3

HDT1000 Series ORIFLOMETEROUTLINE DIMENSION● Screw connection type[Installation in the case of Gas]
Each connection in common

Material class 1 / 2 / 3 (Main pipe size 15~50mm)

OUT250UNIT
m3/h
cm3/h

L

OUT1
1000LRZSETADJ.
AoﬀkPaMODE(A)This outline dimension is for the liquidmeasurement. An indicator is ﬁxed at the topof isolation valve in case of gas measurement.

[Dimension of indicator]
(84)
(66)
48
93

OUT21007250LRZkPa

28

(100)

0SETADJ.
Aoﬀ

UNIT
m3/h
cm3/h

35

OUT140Main pipe sizeLA

Mass (Approx.) (kg)

15mm

70130

1.920mm70132

1.925mm70136

2.032mm74144

2.240mm85147

2.450mm90155

2.9MODE28Cable entry

213535● Screw connection type

Material class 1 / 2 / 3 (Main pipe size 65∼100mm)

OUT250

UNITm3/h
cm3/h

LOUT11000LRZ

SETADJ.
AoﬀkPaMODE(A)

4TOKYO KEISO CO., LTD.

This outline dimension is for the liquidmeasurement. An indicator is ﬁxed at the topof isolation valve in case of gas measurement.

Main pipe sizeL(A)65mm120199Mass (Approx.) (kg)3.780mm120207

4.4

100mm

160

222

7.7

TG-F2494-E00

HDT1000 Series ORIFLOMETER● Flange connection type

50UNIT
m3/h
cm3/hL

OUT2

OUT1
1000LRZSETADJ.
AoﬀkPaMODE(A)This outline dimension is for the liquidmeasurement. An indicator is ﬁxed at the topof isolation valve in case of gas measurement.

Main pipe size

L(A)Mass (Approx.) (kg)*Main pipe size

L(A)Mass (Approx.) (kg)*

15mm

540

167

3.980mm

540

201

1320mm540

170

4.5100mm

540

214

1625mm540

174

5.7125mm540

2262132mm

540

178

6.8

150mm

540

239

2840mm540

181

7.3200mm

5402653750mm540

187

9.1250mm

540

290

5565mm540

195

12300mm

54031663*Mass (Approx.) is for case of JIS10K ﬂange.

● Wafer connection type

OUT250UNIT
m3/h
cm3/hLOUT11000LRZ

SETADJ.
AoﬀkPaMODE(A)This outline dimension is for the liquidmeasurement. An indicator is ﬁxed at the top
pf isolation valve in case of gas measurement.

Main pipe size

L(A)*Mass (Approx.) (kg)*Main pipe size

L(A)*

15mm

50

186

2.980mm

50227

Mass (Approx.) (kg)*3.420mm50188

2.4100mm50239

4.025mm50197

2.5125mm50255

5.632mm50199

2.7150mm50270

6.640mm50204

2.7200mm50292

7.950mm50212

2.9250mm50323

1865mm50222

3.2300mm

50346

20

*A Length and Mass (Approx.) are for case of JIS10K ﬂange.

TG-F2494-E00

TOKYO KEISO CO., LTD.

5

HDT1000 Series ORIFLOMETER● Indicator separation version

Joint (A)H (Std.1000)

80

3/8" piping
3/8" Union

This outline dimension is for the liquidmeasurement. An indicator is ﬁxed at
the top of isolation valve in case of gas
measurement

Indicator can be located separately fromOUT1

OUT2

100
50UNITm3/hcm3/h

Joint (B)

0LRZ

SETADJ.
Aoﬀ

process by using extension piping foreasy observation of indication. Extension
piping length is 1000mm (std).

kPa(Extension piping length is available on

MODErequest)
Part description Material class1 Material class2 Material class3

Joint (A)/(B)

SCS14

SCS14

SCS14

3/8B Pipe

SGP (white)

SUS304

SUS316

3/8B Union

FCMB

SCS13ASCS14A

Refer to MATERIAL table for the combination of material class 1,2, and 3.

WIRING DIAGRAM[Current output type][Alarm output type]
Alarm output (1)/(2) : Open collectorMax. 30V DC/80mA++4-20mA ++ - DC24V

OUT1-+ANA OUT-Alarm Alarm+ output
output-+DC24V

(1)

(2)

-4-20mAReceiver-Receiver

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

6

TOKYO KEISO CO., LTD.

TG-F2494-E00

HDT1000 Series ORIFLOMETERMODEL CODE
Model code
HDT1
Main
pipe
size

Description□ □ □ -□ □ □ □ -□ □ □ □-□ □ □ □ -A /□ □ □015

Note

15mm

300300mm-SRC

Thread connection Rc-SNPThread connection NPT-J1FJIS10K FF Flange-J1R

JIS10K RF Flange-J2F

JIS20K FF Flange-J2R

JIS20K RF Flange-J5F

JIS5K FF Flange-J5R

JIS5K RF Flange-A1R

ANSI 150 Flange

Process-A3R

ANSI 300 Flangeconnection-P1R

JPI 150 Flange-P3R

JPI 300 Flange-WJ1

Wafer (JIS10K)-WJ2

Wafer (JIS20K)-WJ5

Wafer (JIS5K)-WA1

Wafer (ANSI 150)

-WA3

Wafer (ANSI 300)

-WP1

Wafer (JPI 150)

-WP3

Wafer (JPI 300)

-ZZZ

Others1

Material

Indicator installation
O-ring for isolation valve

Material class 1

2

Material class 23Material class 3-1

With isolation valve-2

Indicator separation version
NNBR

FFPM
1

Flow direction

Bottom to Top

6

Left to Right

7

Right to Left

8
Flow range*1
Indicator type

Application
VersionOption

Additional function

Refer to MATERIAL table

Top to Bottom∗-∗∗Flow range code

Manufacturer choice4

Battery type

Battery drive

5

Current output type4-20mA DC (2-wire)

6

Alarm output type2 points + 4-20mA DC

L

For LiquidG

For Gas-A

Version code
/TLZ

Totalization indication/PUL

Totalized indication +Pulse output(Blank) Not provided/Z

Applicable for alarm output
type only.
Not necessary if abovementioned code is available.

Provided*1 Flow range code is selected by factory in accordance with the specified maximum flow rate and diameter.
Code example 1: [In case optional code is not selected.]
25mm diameter. Thread connection Rc. Material class 1. With isolation valve. NBR for O-ring for isolation valve.
Flow direction: Left to right. Battery operated type. For liquid application. “HDT1025-SRC1-1N6*-**4L-A”
Code example 2: [In case all of the possible optional codes are seleclted.]
50mm diameter. JIS10K FF flange connection. Material class 2. With isolation valve. NBR for O-ring for isolation valve.
Flow direction: Top to bottom. Current output type For liquid application. Totalization indication added.
“HDT1050-J1F2-1N8*-**5L-A/TLZ”
Code example 3: [In case the face to face dimension is specified.]
80mm diameter. JIS5K FF flange connection. Material class 3. With isolation valve. NBR for O-ring for isolation valve.
Flow direction: Right to left. Current output type. For liquid application. Totalization indication added. L=600 is specified instead of L=540.
“HDT1080-J5F3-1N7*-**5L-A/TLZ/Z” (L=600)
When the face to face dimension is specified as seen in the above Code Example 3, it will be “Special specification”, and the last letter of model code
will be “Z” in case of such special specification as not mentioned in the above model code.

TG-F2494-E00

TOKYO KEISO CO., LTD.

7

HDT1000 Series ORIFLOMETERCONSTRUCTION

O-ring (P38)
O-ring (P8)

Air/drain valve (4 pcs.)
Air/drain plug (4 pcs.)
Equalizing pressure valve
SCS1

4M5x20 (4 pcs.)

ygb

SHU

TrewscinFixIsolation valve
Blind plug

T1OU

50T20UNIT

ADJ.
AoffIndicator

Hexagon socket head cap screws (4 pcs)

OU

100MODEkPaCoRear view of indicator

PREPARATION OF MEASUREMENTORDERING INFORMATION● In case the fluid is liquid,eliminate the air, and for the gas applica-

1. MODEL

tion, eliminate the drain in according to the HDT1000 Instruction

2. FULL SCALE

manual IM-F972 .

3. FLUID NAME
4. TEMPERATURE (Nor.

Max.

)

5. PRESSURE		 (Nor.

Max.

)

6. DENSITY
7. VISCOSITY* 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
8TOKYO KEISO CO., LTD.

TG-F2494-E00