GENERAL SPECIFICATION

GS.No.GBD110E-2

GasTHERMISTOR TYPE VORTEX FLOWMETER

for GAS MEASUREMENT

DELTAFLOW Type FStandard and Gas Purge Types MODEL: VF series

http://www.oval.co.jp/english

Head Office (Tokyo): Tel. +81 3-3360-5121 Fax. +81 3-3365-8605 International Sales Division Email: SK10@oval.co.jpOverseas Branch Offices: Beijing, Seoul, Singapore, Taipei

■ GENERALThis flowmeter is a kind of vortex flowmeters, which makes use of the regular and periodic characteristics of Karman vortex street. A thermistor sensor picks up changes in flow velocity that come with vortex shedding in the manner - changes in thermistor temperature→ changes in resistance value→ a train of pulses proportional to the flow velocity.In the gas purge type, changes in fluid velocity that come with vortex shedding are replaced by changes in fluid velocity of a purge gas (clean gas) introduced from an external source.Thanks to this arrangement, the thermistor sensor constantly remains in contact with clean, room temperature purge gas, permitting precise flow measurement of gases containing dust and mist, high or low temperature gases, or others previously thought difficult to be measured.

■ FEATURES1. The absence of mechanical moving parts and components subject to abrasion ensures long life and continuous operation with no loss of accuracy with time.2. By measuring actual flowrate, the measurement is insensitive to changes in fluid temperature, pressure and other physical properties.3. Provides pulse output proportional to the flowrate to simplify totalization.4. Small pressure loss saves energy.

5. Replaceable sensor facilitates maintenance and servicing without the need of interrupting the gas flow.6. The converter separated from the sensor body may be located anywhere for maximum ease of maintenance irrespective of piping conditions.7. Gas purge type is primarily intended for measuring gases containing dust and mist, or high or low temperature gases.

■GENERAL SPECIFICATIONS● Standard Meter Body

Item DescriptionBody style Wafer FlangeNominal size (mm) 20, 25, 32, (40), 50, 80, 100, 150 200, 250, 300, (350) 400, (450), 500

Material (※2)

Meter body SUS304 STPG370 SUS304TP STPY400 SUS304TP

Flange —SS400

or SFVC2A

SUSF304 SFVC2A SUSF304

Bluff body SUS304 SCS13A or SUS304

Flange ratingCompanion flangeJIS 10, 20, 30 K

ASME/JPI 150, 300, (600)

JIS 10, 20, 30 KASME/JPI 150, 300, (600)

JIS 10 KASME/JPI 150

Standard Connecting Pipe Sch40 Sch20Operating temp. range −20 to +130℃ 0 to +130℃ −20 to +130℃ 0 to +130℃ −20 to +130℃Design pressure 5.00MPa 1.89MPaAccuracy Within ±1% of RD or ±1% of FS (※1)Repeatability Within ±0.2%Installation Horizontal or vertical

※1: For use in the high pressure range (high Reynolds number [2.8×106 or above]), contact OVAL.※2: Material may vary according to specifications.※3: If the connecting pipe is different from standard connecting pipe, contact OVAL.※4: For nominal size between 200 and 300mm with flange material SFVC2A, the max operating temperature ranges from 0℃ due to temperature limitation of the flange material.※5: Specifications in parentheses are non-standard/made-to-order.

Converter

Wafer type

●Maximum Operating PressureFlange rating JIS10K JIS16K JIS20K JIS30K ASME/JPI150 ASME/JPI300

Max. operating pressure (MPa) 1.18 1.96 2.45 4.51 1.27 3.35

2

GBD110E-2DELTAFLOW Type F

●Gas Purge Type Meter Body (for measurement of gas containing dust and mist)Item Description

Body style Wafer FlangeNominal size (mm) 50, 80, 100, 150 200, 250, 300, (350) 400, (450), 500

MaterialBody SUS304 STPG370 SUS304TP STPY400 SUS304TPFlanges — SS400 or SFVC2A SUSF304 SFVC2A SUSF304Bluff body SUS304 SCS13A or SUS304

Flange rating Companion flangeJIS10K, ASME/JPI150 JIS10K, ASME/JPI150

Standard connecting pipe Sch40 Sch20Operating temp. range −20 to +130℃ 0 to +130℃ −20 to +130℃ 0 to +130℃ −20 to +130℃Max. operating pressure Less than 1MPaAccuracy Within ±1% of RD or ±1% of FSRepeatability Within ±0.2%Installation Horizontal or verticalPurge gas Instrumentation air, nitrogen, or the same gas as the metered fluidPurge rate 0.5L/min to 1.0L/min at 19.6 to 29.4kPaPurge connection Rc1/4 fitting provided

● ConverterItem Description

Model PA21 converterConfiguration Separately mountedPower source 24 to 32VDCPower consumption 32V 40mA or less (24V 54mA or less) (※1)Ambienttemperature

Non-explosionproof −20 to +60℃ (no condensation)Explosionproof −20 to +55℃ (no condensation)

Finish Body: Munsell 10B8/4, Cover: Munsell 2.5PB4/10IP rating IP67

Transmissionlength

Sensor to converter Exclusive 5-wire cable Max. 30m (Finished cable O.D.: 10.7 ± 0.5mm)

Converter toreceiving instrument

For pulse output: 3-wire shielded cable max. 1km (See NOTE.)For pulse and status output: 4-wire shielded cable max. 1km (See NOTE.)

CEVS, CVVS equivalent (Finished cable O.D.: 10.1 to 13mm)

Output signal

① Pulse output: Open drain (equivalent to open collector)Max. applied voltage: 30VDC, Allowable current: 50mA

Unfactored pulsePulse width: 0.2msec or 1msec

② Status output: Open drain (equivalent to open collector)Max. applied voltage: 30VDC, Allowable current: 50mA

Select from: Error, Error+Alarm, H/L alarm, Error+H/L alarmExplosionproofconfiguration

Converter Ex d e ⅡC T6Sensor Amplifier part: Ex d [ib] ⅡC T4, Sensor part: Ex ib ⅡC T4, Applicable temp. range: -20 to +72℃

Cable connectionConverter G3/4 (internal thread)

Sensor G1/2 (internal thread)Explosionproof model: Union clamp of the accompanying pressure-tight packing G3/4 (internal thread)

Installation Mounted on 2" pipe stanchion (clamp and U-bolts furnished)

DisplayLCD display

% flow rate, error, alarm NOTE: If the wire length exceeds 250m or the cable of less than 1.25mm2 is used, the resistance of the cable connecting the receiving instrument and the converter must satisfy the following conditions considering voltage drop:① Low level of pulse output must satisfy the input condition of the receiving instrument: Low level of pulse output = (If+2Ip+Is) R+0.5② Voltage between POWER and COMMON of the converter is within the rated voltage: Converter voltage (between POWER and COMMON) = V−(2If+Ip+Is) RWhere:

Ip Maximum current of pulse output in actual use V Supply voltageIs Maximum current of status output in actual use If Maximum current consumption of the flowmeterR Cable resistance between receiving instrument and converter

(※1) To use the power supply other than manufactured by OVAL, make sure its voltage capacity is 100mA or more considering the current when the power supply is turned ON.

● Explosionproof applied temperature range (for explosionproof models) Explosionproof applied temperature range of the instrument is -20℃ to +72℃ at the part indicated below. To satisfy the requirements, make sure to use the instrument within the suggested range of fluid and ambient temperature shown below.

60

4050

302010

0−10−20−30

−30 −10 10 30 50 70 90 110 130Fluid temperature (℃)

Ambient temperature deratingThe part subject to explosionproof

Ambi

ent t

empe

ratu

re (℃

)

NOTE: Applicable ambient temperature range may vary with the lagging condition of the piping.

3

GBD110E-2DELTAFLOW Type F

■ FLOW RANGESThe DELTAFLOW Type F measures actual frow rate (m3/h[actual]) under pressure. If flow rate information is given under the standard conditions (0°C, 1 atmospheric pressure) (m3/h[normal]), it must be converted into an actual flow rate before you refer to the flow range table below.

Nom. sizemm

Sp. weight kg/m3

AccuracyMinimum flow rate m3/h [actual] Max. Flow rate

m3/h0.5 0.8 1 1.2 3 5 7 10 20 40 6020

(3/4″)±1% of reading — — — — 3.42 2.06 1.47 1.03 0.59 0.42 0.34

12.5±1% of full scale — — — — 2.05 1.23 0.99 0.83 0.59 0.42 0.34

25(1″)

±1% of reading — — — — 4.35 2.61 1.87 1.34 0.95 0.67 0.5525.5

±1% of full scale — — — — 2.61 1.89 1.6 1.34 0.95 0.67 0.5532

(11/4″)±1% of reading — — 17.1 14.2 5.68 3.41 2.72 2.28 1.61 1.14 0.93

56.5±1% of full scale — — 10.2 8.5 4.16 3.22 2.72 2.28 1.61 1.14 0.93

40(11/2″)

±1% of reading — 49.5 39.6 33 16.6 14 12.5 11.1 8.78 6.97 6.0987

±1% of full scale — 14.8 11.9 9.87 5.6 4.34 3.67 3.07 2.17 1.54 1.2650

(2″)±1% of reading 102 63.3 50.7 42.2 22.3 18.8 16.8 14.9 11.9 9.38 8.19

185±1% of full scale 30.3 19 15.9 14.5 9.16 7.1 6 5.02 3.55 2.51 2.05

80(3″)

±1% of reading 151 93.8 75.1 62.6 41.6 35.1 31.4 27.9 22.1 17.6 15.4530

±1% of full scale 49.3 39 34.9 31.8 20.2 15.6 13.2 11.1 7.79 5.51 4.5100(4″)

±1% of reading 197 123 98.3 81.9 56.1 47.3 42.3 37.5 29.8 23.7 20.7900

±1% of full scale 58.8 42.3 37.8 34.5 21.9 16.9 14.3 12 8.45 6.8 6.8150(6″)

±1% of reading 291 182 146 131 96.2 81.2 72.5 64.4 51.1 40.6 35.52100

±1% of full scale 117 92.1 82.4 75.2 47.6 36.9 31.2 26.1 22 22 22200(8″)

±1% of reading 385 241 204 192 142 120 107 94.5 75 59.6 523400

±1% of full scale 205 162 145 132 83.4 64.6 54.6 51 51 51 51250

(10″)±1% of reading 479 299 275 258 191 161 144 128 101 98 98

5200±1% of full scale 317 251 224 205 130 101 98 98 98 98 98

300(12″)

±1% of reading 573 377 350 329 243 205 183 168 168 168 1687500

±1% of full scale 454 359 321 293 186 168 168 168 168 168 168400

(16″)±1% of reading 779 616 551 503 378 378 378 378 378 378 378

12000±1% of full scale 779 616 551 503 378 378 378 378 378 378 378

500(20″)

±1% of reading 1230 966 864 789 741 741 741 741 741 741 74119000

±1% of full scale 1230 966 864 789 741 741 741 741 741 741 741Type of Gas Sp. weight kg/Nm3 Pressure of Gas MPa (gauge) Temperature 20°C

Acetylene 1.175 — — — 0 0.176 0.361 0.547 0.824 1.75 3.60 5.45Argon 1.785 — — — 0 0.081 0.203 0.325 0.508 1.12 2.34 3.55Carbon Monoxide 1.250 — — — 0 0.160 0.334 0.508 0.726 1.64 3.38 5.12Ethane 1.357 — — — 0 0.139 0.299 0.460 0.700 1.50 3.10 4.71Ethylene 1.264 — — — 0 0.157 0.329 0.501 0.759 1.62 3.34 5.06Air 1.293 — — — 0 0.151 0.319 0.487 0.740 1.58 3.26 4.94Oxygen 1.429 — — — 0 0.121 0.279 0.431 0.660 1.42 2.94 4.46Hydrogen 0.0899 0.503 0.866 1.11 1.35 3.53 5.95 — — — — —Carbon Dioxide 1.977 — — — — 0.064 0.174 0.284 0.449 1.00 2.10 3.20Nitrogen 1.251 — — — 0 0.159 0.333 0.507 0.768 1.64 3.38 5.11City Gas 0.802 — 0 0.034 0.061 0.305 0.577 0.848 1.25 2.61 5.32 —Natural Gas 0.828 — — 0.030 0.056 0.293 0.555 0.818 1.21 2.53 5.15 7.78Propane 2.020 — — — — 0.060 0.168 0.276 0.437 0.975 2.05 3.13Butane 2.703 — — — — 0.019 0.100 0.180 0.301 0.703 1.51 2.31Methane 0.717 — — 0.050 0.081 0.354 0.657 0.960 1.42 2.93 5.97 —

NOTES: 1. Flow ranges listed in above table is calculated based on temperature 20℃ and viscosity 0.017mPa•s. 2. If it is necessary to determine the minimum flow rate precisely, contact OVAL.

How to Determine Minimum Flow RateExample 1 A 200mm (8″) size meter is to be used for air having a pressure of 0.74MPa [gauge] at 20℃. Find the minimum flow rate. [Solution] Finding the minimum flow rate for nominal size 200mm (8″) in Table A corresponding to 0.74MPa [gauge] air in Table B, we obtain: where accuracy is ±1% of reading: 94.5m3/h, where accuracy is ±1% of full scale: 51m3/h.

Example 2 A 250mm (10″) size meter is to be used for city gas having a pressure of 0.5MPa [gauge] at 20℃ with an accuracy of ±1% of reading. Find the minimum flow rate. [Solution] Finding the minimum flow rate for nominal size 250mm (10″ ) in Table A corresponding to 0.305MPa [gauge] and 0.577MPa [gauge] of city gas in Table B are 191m3/h and 161m3/h, respectively. Hence, at 0.5MPa [gauge] we obtain from the rule of proportion:

0.577 − 0.5 Qmin= 161 + × (191−161)≒ 170m3/h 0.577 − 0.305

Example 3 A 200mm (8″) size meter is to be used for butane gas having a pressure of 0.301MPa [gauge] at 80°C with an accuracy of 1% of reading. Find the minimum flow rate. [Solution] Although the minimum flow rate in Table A corresponding to 0.301MPa [gauge] is 94.5m3/h, the minimum flow rate should increase by the amount of decrease in specific weight due to elevated temperature (80℃) as follows:

0.101325 + 0.30 273.15 Sp. weight of butane at 80℃ = 2.703 × × =8.3kg/m3

0.101325 273.15 + 80

The minimum flow rates for the nominal size 200mm (8") corresponding to specific weights 7kg/m3 and 10kg/m3 in Table A are 107m3/h and 94.5m3/h, respectively. Hence, the minimum flow rate of butane at 80℃ (sp. weight 8.3kg/m3) can be obtained from the rule of proportion:

10 − 8.3 Qmin= 94.5 + × (107 − 94.5)≒ 102m3/h 10 − 7

Tabl

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4

GBD110E-2DELTAFLOW Type F

■ PERFORMANCE CHARACTERISTICS

●Meter FactorsThe table below shows the nominal meter factor by each nominal size and pulse frequency at maximum flow rate.

Nominal Sizemm (inch)

Nominal Meter FactorL/P

Pulse Freq. atMax. Flow rate

Hz

Max. Flow ratem3/h

20 (3/4) 0.008438 411.5 12.5 25 (1) 0.01733 408.7 25.5

32 (11/4) 0.03852 407.4 56.5 50 (2) 0.1260 407.8 185 80 (3) 0.4197 350.8 530100 (4) 0.9432 265.1 900150 (6) 3.033 192.3 2100200 (8) 7.032 134.3 3400

250 (10) 13.57 106.4 5200 300 (12) 23.26 89.57 7500 400 (16) 52.38 63.64 12000 500 (20) 102.8 51.34 19000

20 30 50 100 300 500 103 1043×103

5×103Flow rate Qm3/h [actual] Flow rate Qm3/h [actual]

50

10

1008060504030

20

1086543

2

1

5

1

0.5

0.11 5 10 50 100

Nominal size 20mm（¾″）

Nominal size 50mm（2″）

80mm（3″）

100mm（4″）

150mm（6″）

200mm（8″）

250mm（10″）

300mm（12″）

400mm（16″）

500mm（20″）

25mm（1″）

32mm（1¼″）

Pres

. los

s C

oeff.

[C]

Pres

. los

s C

oeff.

[C]

● Pressure Loss

● Nominal sizes 20 to 32mm ● Nominal sizes 50 to 500mm

C × γΔP= 100ΔP: Pressure loss (kPa) γ: Sp. weight (kg/m3)To find the pressure loss, read the coefficient C at the intersection of the flow rate Q and the diagonal line of the particular size and determine ΔP by the equation above.

5

GBD110E-2DELTAFLOW Type F

■ OUTLINE DIMENSIONS (Standard type) (Unit in mm)

StyleNominal size mm

(inch)Flange rating L H d D

Approx. Weightkg

Wafertype

20 (3/4)Companion Flange

JIS 10 KJIS 20 KJIS 30 K

ASME/JPI 150ASME/JPI 300

80 375 21.4 120 10.425 (1) 80 353 27.2 70 5.9

32 (1 1/4) 80 351 35.5 70 6.450 (2) 80 359 52.7 92 7.380 (3) 80 375 78.1 127 10.5

100 (4) 86 391 102.3 157.2 12.4150 (6) 108 428 151 215.9 21.8

Flangetype

200 (8)

JIS 10 K

350 472 200

330 61JIS 20 K 350 75JIS 30 K 370 90

ASME/JPI 150 343 71ASME/JPI 300 381 95

250 (10)

JIS 10 K

450 505 249

400 101JIS 20 K 430 126JIS 30 K 450 152

ASME/JPI 150 406 111ASME/JPI 300 445 147

300 (12)

JIS 10 K

500 545 298

445 141JIS 20 K 480 169JIS 30 K 515 214

ASME/JPI 150 483 166ASME/JPI 300 520 217

400 (16)JIS 10 K

600 595 390.6560 241

ASME/JPI 150 595 366

500 (20)JIS 10 K

650 655 489675 431

ASME/JPI 150 700 591

L

φD

L

φd

φD

H

6060 85 53

φ10

3

6060 85 53

φ10

3

H

6060 5385

φ10

3

H

Lφd

Conduit Connection G1/2 Conduit Connection G1/2

Conduit Connection G1/2

φd

φD

●Wafer type 20mm (3/4″)

※ Dimensions D and H depend on the connecting flange rating.

●Wafer type 25mm (1″) to 150mm (6″)

● Flange type 200mm (8″) to 500mm (20″)

NOTE: Outline dimensions of special or regulation-compliant products may be different. Please refer to the approval drawing or delivery specification.

6

GBD110E-2DELTAFLOW Type F

■ OUTLINE DIMENSIONS (Gas purge type) (Unit in mm)

Style Nominal size mm (inch) Flange rating L H d D Approx. Weight

kg

Wafertype

50 (2)Companion Flange

JIS 10 KASME/JPI 150

80 359 52.7 92 7.380 (3) 80 375 78.1 127 10.5

100 (4) 86 391 102.3 157.2 12.4150 (6) 108 428 151 215.9 21.8

Flangetype

200 (8)JIS 10 K

350 472 200330 61

ASME/JPI 150 343 71

250 (10)JIS 10 K

450 505 249400 101

ASME/JPI 150 406 111

300 (12)JIS 10 K

500 545 298445 141

ASME/JPI 150 483 166

400 (16)JIS 10 K

600 595 390.6560 241

ASME/JPI 150 595 366

500 (20)JIS 10 K

650 655 489675 431

ASME/JPI 150 700 591

Purge gas Connection

Purge gas Connection

60 85 5360

H

φd

L

φ10

3φ

D

H

φD φd

φ10

3

60 60 85

L

53Conduit Connection G1/2

Conduit Connection G1/2

●Wafer type 50mm (2″) to 150mm (6″) ● Flange type 200mm (8″) to 500mm (20″)

NOTE: Outline dimensions of special or regulation-compliant products may be different. Please refer to the approval drawing or delivery specification.

● Purge Box (FB0 )12 Unit in mm

570

492

Mist Separator

Purge Inlet Purge Outlet (to Flowmeter)

Pipe

Enclosure: Sheet steel

Finish: Light beige (5Y7/1)

Approx. weight: 4 kg

Reducing ValveRotameter

210

7

GBD110E-2DELTAFLOW Type F

●Converter (PA21)

309233

61.7 171.5

120 110100

φ13

4

67

Conduit Connection G3/4 Conduit Connection G3/4

30 125

71

41

7411

4

■ WIRING DIAGRAM

(1) Wiring for converter power source and output

Do not use this conduit connection.

Terminal Cover for Maintenance

● Terminal label and descriptionLabel Description Remark

POWER 24 to 32VDC DC power 24 to 32VDC

Open drain output (equivalent of open collector output) can be connected up to 30V, 50mA.

STATUS Status output (open drain)

PULSE Pulse output (open drain)

COMMONDC power (0V)Status output (−)Pulse output (−)

EARTH Grounding

★ Do not use the conduit connection on the terminal cover side.★ For wiring connection specification, refer to general specifications "Converter" on Page 2.

Unit in mm

8

GBD110E-2DELTAFLOW Type F

■ CONNECTION TO RECEIVING INSTRUMENTS (EXAMPLE)

● For details of individual receiving instruments, refer to respective general specification sheets.※1: A digital filter (SU1301) cannot be connected. (The converter is equipped with the equivalent function.)※2: Separate power source is required when connecting with the totalizer (EL0122).

OVAL MODEL EL4000

●Line temperature and pressure are considered approximately constant and correction factor can be multiplied as constant:

●Line temperature and pressure are automatically compensated, and total and instantaneous flow readout (or output) are obtained:

Meter body

Meter body

Converter

Converter

Pulse Distributor(SU1508)

orExternal Power Source

Flow Computer(EL4001 series)

4 to 20mADC

Unfactored Pulse

Factored Pulse

Totalizer(EL0122)

Total and Instantaneous Flow rate Readout

PressureTransmitter

ResistanceThermometer

　(※2)

(2) Wiring between converter and sensor

Converter (PA21)

Sensor terminal box

SIG0VSUPC1C2

SHIELD

SHIE

LDC

2 C1

SUP

0V SIG

★Sensor terminal box must be installed using intrinsically safe installation procedure.

● Terminal label and connecting cable colorConverter terminals Terminals inside sensor terminal box Connecting cable color

SIG SIG White0V 0V Black

SUP SUP RedC1 C1 GreenC2 C2 Yellow

SHIELD SHIELD Twist [Red/Black/White], [Yellow/Green], and shielded cables together and cover the bundle with the accompanying tube, then connect to SHIELD terminal.

★ Exclusive cable must be used for connecting the converter and the sensor.★ Either the left or right conduit connection (cable entry) of the sensor terminal box can be used.★ For wiring connection specification, refer to general specifications "Converter" on Page 2.

9

GBD110E-2DELTAFLOW Type F

■ PRODUCT CODE EXPLANATIONItem Product Code Description

① ② ③ ④ ⑤ ⑥ − ⑦ ⑧ ⑨ ⑩ ⑪ − ⑫ ⑬ ⑭ − ⑮ ⑯ ⑰ ⑱ ⑲ ⑳ − � � � �

ModelV F W Wafer type (Nominal size: 20mm to 150mm)V F Y Wafer, spigot joint type (Nominal size: 25mm to 150mm)V F F Flange type (Nominal size: 200mm to 500mm)

Nominal size

0 2 0 20mm0 2 5 25mm0 3 2 32mm0 4 0 40mm (made-to-order)0 5 0 50mm0 8 0 80mm1 0 0 100mm1 5 0 150mm2 0 0 200mm2 5 0 250mm3 0 0 300mm3 5 0 350mm (made-to-order)4 0 0 400mm4 5 0 450mm (made-to-order)5 0 0 500mm

−Fluid category G GasTemperature category 0 Standard ※ Max. fluid temperature: 130℃

Major parts material

D SUS304 or SUS304 equivalent ※ Allowable temp. low limit: −20℃(Nominal size: 20mm to 500mm)

G Carbon steel (STPG370/STPY400/SFVC2A/SS400) ※ Allowable temp. low limit: 0℃(Nominal size: 200mm to 500mm)

Z Other than above

Process connection

J 1 JIS 10K

Flange face of the flange type model is RF.

J B JIS 16KJ 2 JIS 20KJ 3 JIS 30KA 1 ASME 150A 3 ASME 300A 6 ASME 600 (made-to-order)P 1 JPI 150P 3 JPI 300P 6 JPI 600 (made-to-order)Z 9 Other than above

−

Explosionproof rating0 Non-explosionproofJ TIIS

Explosionproof temperature class0 Non-explosionproof4 Sensor: T4 (Converter: T6)

Regulations

0 Standard (No regulation applied)

G High Pressure Gas Safety Act ※: w/Material test report(Approved product)

H High Pressure Gas Safety Act ※: w/Material test report (made-to-order)(Equipment test accepted product)

L Gas Business Act ※: w/Material test report (made-to-order)(Subject to Japan Welding Engineering Standards)

M Gas Business Act ※: w/Material test report (made-to-order)

Q Electricity Business Act ※: w/Material test report (made-to-order)(Subject to Japan Welding Engineering Standards)

R Electricity Business Act ※: w/Material test report (made-to-order)F w/ Material test report

−Converter (power source) 5 PA21 (24 to 32VDC)Converter construction 2 Separately mountedDisplay 0 w/ Digital indicator (% instantaneous flow rate display)Output G Open drain pulseCommunication specification NVersion A

−Sensor configuration 1 Externally installed sensor

Sensor type

1 Standard (Nominal size: 20mm to 500mm)

2 Gas purge type (Nominal size: 50mm to 500mm)※ Max. operating pressure: under 1MPa

4 Double sensor (made-to-order)9 Other than above

Accompanied cable length0 10m9 Specific cable length (Max. 30m)

Special0 StandardZ Special (meter I.D., flange-to-flange dimension, etc. is non-standard)

10

GBD110E-2DELTAFLOW Type F

■ INSTALLATION CONDITIONS1. Typical Piping InstructionsIt is required that the flow pattern of the fluid flowing in and out of a vortex flowmeter be as uniform as possible for accurate metering performance. Therefore, proper flow straightening measures have to be applied when installing a vortex flowmeter. The standard piping instructions are shown in the following table.

(1) Use an OVAL flow straightener or provide a specified straight pipe (ISO-5167 compliant).

No. Piping Arrangement Straight PipeLength (L) Remark

1 OVAL's Flow-Straightener

8D Refer to P11

Applicable to Nominal size 25mm or above

12D Refer to GS/GCF001

2 Reducer 15D Min. A concentric reducer is installed at the upstream of a meter.

3 Elbow

23D Min. An elbow is installed at the upstream of a meter.

25D Min. Two elbows are installed at the upstream of a meter.

40D Min. Two elbows are vertically installed at the upstream of a meter.

4 Fully opengate valve 15D Min. A full-open gate valve is installed at the upstream of a

meter.

5 Partially opengate valve 50D Min. A partially open gate valve, sharp orifice or something that

markedly disturbs the flow pattern is upstream of meter.

Honey Vane•LFlow

L

Flow

Flow

L

L

Flow Straightener

Flow

L

Flow

L

Flow

L

Flow

L

Flow

L

Fully Open

PartiallyOpen

NOTES:1: Upstream and downstream pipes adjacent to the flowmeter should be of the same internal

diameter (ID) as the flowmeter. (The exclusive flow straightener, Honey Vane L, and downstream short pipe have the same ID as the flowmeter.) The table below shows the standard ID of the flowmeter. Confirm the delivery specification in case ID is non-standard.

Flowmeter standard IDNominal size ID referenceunder 400mm Sch40

400mm or more Sch20

2: A short pipe section, 5D or longer shall be provided downstream of the meter.3: For pressure detection, provide the probe downstream of the flowmeter (see the right figure).

To avoid disturbances in the flow, temperature detection should be made downstream of the flowmeter and, at the same time, upstream of the control valve.

2. Pressure PulsationIn case the flowmeter is installed in the line where instruments that can generate pressure pulsation, such as roots blower or compressor is present, performance of the flowmeter can be affected by flow pulsation. Allowable pulsation pressure is calculated from the following equation:N< 22ρV2 (Pa)where, N: Pulsation pressure (Pa) ρ: Density (kg/m3) V: Min. Velocity (m/s)

Even at shutdown, pressure pulsation in the process fluid can produce a false output. If pressure pulsation is excessive, take the following measures:① Locate the source of flow pulsation downstream of the flowmeter.② Install a pulsation attenuator.③ At shutdown of the flow, shut off valves upstream and downstream of the flowmeter.

2 to 7Dfrom the meter

FLOW

D: Nominal size

Pressure detection point

Temperature detection point

Min. 1D from pressure detection pointMin. 2D from flowmeter

11

GBD110E-2DELTAFLOW Type F

FLOW

Honey Vane S

Flowmeter

Min. 8D

● Honey Vane　Outline Dimensions

Nominal size(mm)

Honey Vane S Honey Vane LφD＊ (mm) t (mm) L (mm)

25 75 3.5 20040 90 5.4 32050 105 6.9 40080 134 10.2 640

100 159 13.3 800150 220 19.6 1200200 268 26 1600250 331 32.3 2000300 376 38.7 2400

＊ Dimensions for JIS 10K.

L

t

φD

t

Honey Vane S Honey Vane L

■ PRECAUTIONS ON USE1. This flowmeter is developed, designed, and manufactured to be used as a flowmeter for general industrial application.

Therefore, when it is used for the application where its operation is directly related to the safety of the relevant system or the product is important in the facilities (such as process control and custody transfer), you are requested to ensure sufficient security including safety design, redundancy and duplication of the process, and implementation of periodic inspection. Do not use this flowmeter where its operation and performance directly affect human life.

2. When used under appropriate conditions, this flowmeter can demonstrate its stable performance without aging degradation of accuracy. However, malfunction or failure may occur due to various factors. Thus, examining the operating conditions, operating status, and importance in the process, you should consider periodic maintenance of your flowmeter. In order to secure long-term and safe use, OVAL recommends the customer to verify the soundness of the flowmeter through periodic inspection every two years. For the details of inspection, contact the nearest OVAL sales/service office or representatives.

3. This flowmeter is manufactured, adjusted, and inspected to meet the conditions of use. The fluid measured, flow range, pressure, temperature, etc., must be applied under the specified conditions. The conditions for use are stated on the nameplate attached on the flowmeter transmitter and specification sheet supplied with the product.

4. The materials used in this flowmeter are stated in this document or delivery specification sheet shipped with the equipment. Supplied with all the necessary information by the customer, OVAL has selected materials that best suit the customer requirements including corrosion resistance. However, we ask you to understand that the final judgment on the compatibility of the materials in the actual process environment lies with the customer.

● Installation of Honey Vane S ① Locate the Honey Vane S upstream of the flowmeter. ② Provide a short pipe (8D or longer) between Honey Vane S and flowmeter. ③ Regarding the bolts and nuts used for connecting JPI flange, adopt unified screw threads. If it is necessary to use metric screw threads, contact OVAL.

初版 改訂 印刷16.01 16.11

GS.No.GBD110E

The specification as of November, 2016 is stated in this GS Sheet. Specifications and design are subject to change without notice.

Sales Representative:

GBD110E-2DELTAFLOW Type F

■ PLEASE SUPPLY THE FOLLOWING INFORMATION WHEN YOU INQUIRE.Fill in the blanks. Tick the boxes □ that apply.

Item Description

1. Name of gas

2. Application

3. Flow range Max. Normal Min. □ m3/h [normal] □ m3/h [actual]

4. Temperature range Max. Normal Min. ℃

5. Pressure range Max. Normal Min. MPa [gauge]

6. Compensation reference Temperature ref. ℃Pressure ref. MPa [gauge]

7. Compression coefficient Z Z0

8. Density or specific gravity Density □ kg/m3 [normal] □ kg/m3 [actual] Specific gravity (Air=I)

9. Viscosity Viscosity □ mPa•s □ mm2/s at ℃

10. ConnectionsNominal size □ mm □ inch, Flange rating □ JIS K □ RF □ ASME RFSch□ □ FF □ JPI RF

11. Flow straightening pipe□Required (Flow straightener, Honey Vane S, Honey Vane L, and downstream short pipe)□Not required (Please supply straight pipe of appropriate length, ID, and Sch No.)

12. Compensation range Temperature: to ℃ , Pressure: to MPa [gauge]

13. Accuracy test □ Required □ Not required

14. Receiving instrument Specify the model and specification referring to P.8 "CONNECTION TO RECEIVING INSTRUMENTS" on P.8.

15. Compensation □ Not required

16. Explosionproof □ Required □ Not required

17. Regulations □ Required □ Not required

18. Cable length □ Standard 10m □ Specific length m

19. Other considerations