Oval EX DELTA II User manual

Ins. No. D
－
586
－
2
－
E
1
Battery Powered Vortex Flowmeters
EX DELTA Ⅱ, EX DELTA ⅡDIA
(Fixed/replaceable sensor and integrally/separately-mounted transmitter)
PAF5 type
Every OVAL product is fabricated and shipped from our factory under stringent quality control. In order to
maintain its design performance throughout its life, this manual offers the operator the necessary installation,
operation and maintenance information. Be well familiar with these instructions before you place the meter in
service and keep this manual for ready reference.
Wafer type/Display
provided
(fixed sensor)
Flanged type/Display
provided
(fixed sensor)
Separate-mount transmitter
Display provided
Separate-mount, wafer type
(fixed sensor)
Separate-mount, flange type
(replaceable sensor)
Wafer type/Display
provided
(fixed sensor)

D-586-2-E
2
1. HANDLING PRECAUTIONS...........................4
1.1 Confirmation of Name Plate .......................4
1.2 Transportation Guidelines...........................5
1.3 Storage Guidelines .....................................5
1.4 Precautions for Operating Conditions.........5
1.5 General.......................................................6
2. GENERAL SPECIFICATIONS.........................7
2.1 EX DELTAⅡSensor Specifications ............7
2.2 EX DELTAⅡDIA Sensor Specifications .....7
2.3 Indicated Units of Measurement.................9
2.3.1
EX DELTA Ⅱ , Indicated Units of Measurement ..9
2.3.2 EX DELTAⅡDIA, Indicated Units of
Measurement........................................9
2.4 Transmitter Specifications ........................10
3. COMPONENT NAMES AND FUNCTIONS ... 11
3.1 Component Names................................... 11
3.2 Exploded Diagram and How to Turn the
Meter On ..................................................12
3.2.1 Exploded Diagram and Parts List .......12
3.2.2
How to Turn the Meter On......................... 13
3.3 Outline Dimensions ..................................14
3.4
Flow Straightener and Downstream Short Pipe ...22
3.5 Display Function and Operation
Method of Transmitter ..............................23
3.6 Operation by Transmitter Optical Switch ..23
3.7 Unit Display ..............................................23
3.8 Display during Operation ..........................24
3.9 Battery Life ...............................................24
4. PIPING INSTRUCTIONS ..............................25
4.1 Standard Piping Conditions ......................25
4.2 Pipes to be Used ......................................26
4.3 Location of Pressure Gauge and
Thermometer Taps ...................................26
4.4 Pulsation...................................................27
4.5 Prevention of Cavitation (liquid service) ...27
5.6 Prevention of Excessive Flowrate ............27
4.7 Prevention of Slug Flow............................28
4.8 Prevention of Partially Filled Pipe.............28
4.9 Bypass Line ..............................................28
5. INSTALLATION .............................................29
5.1 Installation Location..................................29
5.2 Physical Orientation..................................29
5.3 How to Change Transmitter Orientation ...29
5.4 Installation Procedures for
Separated Type Transmitter .....................31
5.5 Wiring Connections of Separate Type ......32
5.5.1 Wiring Specifications ..........................32
5.6 External/Internal Grounding Terminals .....32
5.7 Connecting Sensor Lead Wire..................32
5.7.1
Considerations on Wiring Connections ...33
5.7.2 Separated Type Transmitter to Sensor
Terminal Box Wiring Diagram .............33
5.8 Close-Up Plug ..........................................34
5.9
Replacement of External Cable Gland and
Close-up Plug
...........................................34
5.10 Heat Retention Procedure ......................35
5.11 Ambient Temperature..............................35
5.12 How to Change Display Angle ................35
5.13 Sensor Installation ..................................36
5.13.1 Wafer Type........................................36
5.13.2 Flange Type ......................................37
6. OPERATION..................................................38
6.1 Flushing of Piping Assembly.....................38
6.2 Operation Procedure ................................38
6.3 Key Functions...........................................39
6.4 Optical Switch...........................................39
6.4.1 Activating Optical Switch.....................40
6.4.2 Key Lock on Optical Switch ................40
6.4.3 Operation by Push Button...................41
6.4.4
Display of Resettable Total/Cumulative
Total or Instataneous Flow Rate
...........41
6.4.5 Clearing of Total Value........................42
6.4.6 Display of Cumulative Total ................42
6.4.7
Bar Graph Display of Instantaneous Flow Rate ...42
6.5 Operator Alarm .........................................42
6.5.1
Low Battery Alarm ...............................42
7. PARAMETER SETTING................................43
7.1
Entering Parameter Setting Mode ...................43
7.2 Parameter Structure .................................43
7.3 Scrolling Parameters ................................44
7.4 Changing/Selecting Value ........................45
7.5 Returning to Measurement State..............45
7.6 Parameter List ..........................................46
7.6.1 Parameter-1. TOTAL...........................47
7.6.2 Parameter-2. RATE ............................47
7.6.3 Parameter-3. DISPL ...........................48
7.6.4 Parameter-4. METER .........................48
7.6.5 Parameter-5. PULSE..........................49
7.6.6 Parameter-6. OTHERS.......................49
7.7 Parameter Setting Procedure ...................50
8. MAINTENANCE/ INSPECTION ....................51
8.1 Front Lid Removal ....................................51
8.2 Mounting Display Unit...............................52
8.3 Front Lid Mounting....................................52
8.4 Test and Adjustment of PAF5....................52
8.5 Flow Sensitivity Adjustment Procedure ....53
8.6 Amplifier Gain ...........................................53
8.7 Trigger Level.............................................53
8.8 Battery Replacement ................................54
8.9 Battery Disposal Rules .............................55
8.10 Cautions When You Power On ...............55
9. EXPLOSIONPROOF CONSTRUCTION.......55
10. PRODUCT CODE EXPLANATION .............56
CONTENTS

D-586-2-E

Lithium metal battery is installed in PAF5.
For safe use of product, please strictly follow warnings and cautions below.
If the battery solution gets into your eyes, wash your eyes sufficiently with clean water, such as tap
water, and seek immediate medical attention.
Do not expose the battery to strong sunlight or high temperature such as inside vehicle in hot weather.
Do not wet the battery with water, etc.
Use the battery after reading though equipment instruction manual and cautionary statement. Specification
and performance of the battery may not be suitable depending on the usage and equipment.
Store the battery away from direct sunlight, high temperature and high humidity.
Insulate the battery completely with tape or such when discarding or storing the battery.
Discard the battery conforming to the regulation of local government, etc.
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CAUTION
Do not use the battery other than designated use.
Never charge the battery.
Do not put the battery in fire, heat or disassemble.
Do not use the battery with its polarity reversed.
Do not short-out the battery.
Keep the battery out of reach of infants.
Remove the battery away from fire sources if liquid leakage or abnormal smell is detected. Leaking electrolyte
can catch fire any time.
Do not apply solder directly on the battery.
Do not apply strong impact on or throw the battery.
Do not deform the battery.
Do not make the battery discharge forcibly.
Do not peel off or damage the surface film of the battery.
The battery is regulated as dangerous goods by IATA UN3091. Conform strictly to IATA guidelines for its
transportation.
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WARNING
Shown in this manual are the signal words
NOTE, CAUTION and WARNING, as described in the examples below:
NOTE:
Notes are separated from the general text to bring the user’s
attention to important information.
CAUTION:
Caution statements signal the user about hazards or unsafe
practices which could result in minor personal injury or product or
property damage.
WARNING:
Warning statements signal the user about hazards or unsafe
practices which could result in severe personal injury or death.

Explosion-proof
CautionNamePlate
Product
NamePlate
Explosion-proof
CautionNamePlate
Product
NamePlate
D-586-2-E

1. HANDLING PRECAUTIONS
This product is delivered with the battery uncharged. Open the front lid and turn the power of product to
be ON when start using. Power ON procedure is written on Item 3.2.2.
The device is shipped out after sufficient inspection at our factory. Check appearance for any damage made
during the transportation.
Read this section first for necessary precautions in handling the product.
◆Reminder ◆
Inform us of product name, product code, manufacturing number and so on at inquiry.
Fig.1. Product Name Plate
Fig.1. Fixed sensor, replaceable sensor
Explosion-Proof Name Plate
Fig. 1.2 Position of Explosion-proof Name Plate
Fig. 1.1 Position of Product Name Plate
Contact supplier or our nearest service network for
any questions or inquiries.
1.1 Confirmation of Name Plate
This flowmeter has been adjusted one by one to the specification. Product code and rated specification appear
on the name plate attached on the side of transmitter. Confirm that the specification on the name plate complies
with your order.

D-586-2-E
5
<Descriptions on Product Name Plate>
The following label is attached on the display in the enclosure.
TYPE:OVL0141
Flowrateindicator/Totalizer
O
V
A
L
-
M
E
M
-
1
L
-
V
.
0
.
1
/
2
Fig. 1.5 Label
No. Item Contents
(1) MODEL Model
(2) Meter Factor
(3) Rated Max. Flow
Rate
Max. flow rate in catalog is
indicated in actual flow rate
(4) Max. operating
temp.
(5) Max. operating
pressure
No. Item Contents
(6) Serial Number
(7) Ambient
Temperature
(8)
Instrument
Number
(Tag. Number)
Written only when specified
(9) Manufactured
Month, Year
1.2 Transportation Guidelines
(1) Transport this equipment to installation location preferably with the packing status shipped from our
company in order to avoid damage due to transportation accident.
(2) Pay attention not to apply strong impact or drenched by rain during transportation.
(3) Conform to the transportation method defined by IATA strictly because the battery is classified as IATA
dangerous goods UN3091.
1.3 Storage Guidelines
Unexpected accident could occur if the equipment is not being installed for a long period after it reached
your place.
Pay attention to the items below if long time storage is expected in advance.
(1) Store the equipment preferably in the packing status shipped from OVAL.
(2) Select the storage location satisfying the conditions below;
●Location where not exposed to rain or water.
●Location where vibration and impact are least
expected.
●Location at normal temperature and normal
humidity.
●Storage/ Shipping Environment Conditions
Temperature: 20 ±15°C
Relative Humidity: 65 ±20%
Pressure: 500 to 1,060hPa
(3) Wash out the flowmeter once used completely so that the fluid residue does not remain or adhere inside.
Also, apply a countermeasure on the electric conduit against water intrusion.
CAUTION: Modification without prior consent from OVAL voids warranty.
1.4 Precautions for Operating Conditions
It is necessary to use this flowmeter under the designated operating conditions, i.e. flow rate, pressure,
temperature, and etc. to maintain high accuracy and lifetime. The operating conditions are described on the
product name plate attached on the transmitter. Read them before starting operation.

D-586-2-E
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<Fixed Sensor Type> <Replaceable Sensor Type>
Diamond-shaped Bluff Body
Sensor
Diamond-shaped Bluff Body
Sensor
Sensor
Diamond-shaped Bluff Body
Flow Direction
Flow Direction
Flow Direction
Fig. 1.6 EX DELTA Ⅱ DIA Construction
1.5 General
EX DELTAⅡis a vortex flowmeter, making use of a piezoelectric sensor. Behind the bluff body in a flowing fluid,
Karman vortices form and shed proportionally to the rate of flow on alternating side of the bluff body placed
perpendicular to the stream of flow. A piezoelectric sensor picks up the frequency of these vortices, used for
flowrate measurement.
EX DELTA II DIA, vortex flowmeter for liquid measurement, features high immunity against rust, adherence and
depositions in the pipe. By significantly reducing the trouble common to other type flowmeters or conventional
vortex flowmeters, It enables long and stable operation.
<EX DELTA ⅡFeatures>
(1) A broad flow range with high metering accuracy.
(2) Sensor isolated from the process fluid and simple meter design with no moving parts contributes to long
life.
(3) No degradation of accuracy over time.
(4) A wide temperature and pressure range. Accepts most fluids, including liquids, gases and steam.
(5) Small pressure loss across the meter to save energy.
(6) Battery powered, requires no external power source (Battery life is 7 years for integrated type and 4 years
for separated type)
(7) Can monitor total flow (accumulated total flow, resettable flow) and instantaneous rate on a digital display.
(8) This is most suitable for flow rate sensor dedicated to site monitor because this is water-proof construction
(IP66/67) as well as flameproof construction.
(9) The sensor comes in fixed type or cartridge replaceable type: the replaceable sensor can be replaced
without stopping the line for inspection or maintenance.
EX DELTA ⅡDIA Features
(1) Proprietary diamond-shaped bluff body combined with a separate sensor prevents scale sedimentation or
material buildup to maintain consistent performance in contaminated fluid measurement. The sensor
element isolated from the process fluid and the absence of moving parts contribute to long life.
(2) Corresponds to wide range temperature and pressure conditions of processes.
(3) Withstands severe cleansing environments, including steam cleaning.

D-586-2-E
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2. GENERAL SPECIFICATIONS
2.1 EX DELTA ⅡSensor Specifications
Item Description
Sensor type Fixed sensor Fixed sensor Replaceable sensor
Nominal size
(mm) 10, 15, 25, 40, 50, 80, 100, 150 15, 25, 40, 50, 80, 100, 150, 200, 250, 300
15, 25, 40, 50, 80, 100, 150,
200, 250, 300
Connection Wafer type (*1) Flanged type (RF is standard.) Flanged type (RF is standard.)
Flange rating JIS10, 16, 20, 30K ASME/JPI150, 300, 600
DIN PN10, 16, 25, 40
Std. connecting pipe Nominal wall thickness Sch 40 (*2)
Applicable fluid Liquids, gases and steam (*3)
Flow rate range See page 5, 6 and 7
Operating temp.
range (*4)
Ambient temperature type: - 30 to +120˚C
Standard type: -30 to +300˚C
Standard type: - 30 to +300˚C
High temp. type: - 30 to +460˚C (*5)
Max. operating
pressure Depends on flange rating (Design pressure: 5.00MPa). See table below.
Accuracy (*6)
Refer to the Table below; Flow rate range differs for the items with accuracy selection.
Nom. size (mm)
Applicable fluid
10 15, 25,40, 50 80, 100, 150, 200, 250,
300
Liquids ±2% of full scale or
better
· ±1% of reading or better
· ±1% of full scale or better
Gases and steam
(Max. flow velocity : 60m/s)
—
· ±1% of reading or better
· ±1% of full scale or better
Gases and steam
(Max. flow velocity : 80m/s)
— —
· ±1.5% of reading or better
· ±1.5% of full scale or better
Reproducibility ±0.2％or better
Materials
Body SCS14A
SUS316 or SCS14A
(Nom. size 200 to 300mm…Flange material is SUS316 or
SFVC2A.)
Bluff body (delta shaped)
SUS316 or SCS14A
Adapter SUS304 or SCS13A
Installation No restrictions on physical orientation to cause loss of accuracy.
Maintainability and waterproof work for cable entry should be taken into consideration.
Finish Only on SFVC2A parts of nominal size 200 to 300mm : Phthalate resin finished Munsell 2.5G8/2
NOTE: (*1): For nominal size 10mm with ASME or JPI standard, nominal diameter of connecting pipe is 15mm as
standard.
(*2): If different nominal wall thickness is used for piping, consult OVAL.
(*3): Gas steam measurement is possible for nominal size greater than 15mm.
(*4): For nominal size 200 to 300mm with flange material SFVC2A, the allowable operating temperature
ranges from 0°C due to temperature limitations of flange material.
(*5): Max. operating temperature becomes 420°C in case of flameproof construction.
(*6): Consult OVAL if measuring gas/steam in high pressure range (high Reynolds number: greater than
2.8x10^6).
2.2 EX DELTA ⅡDIA Sensor Specifications
Item Description
Sensor type Fixed sensor Fixed sensor Replaceable sensor
Nominal size 15, 25, 40, 50, 80mm 50, 80mm 50, 80mm
Connection Wafer type Flanged type (RF is standard.) Flanged type (RF is standard.)
Flange rating JIS 10, 16, 20, 30K ASME/JPI 150, 300
Applicable fluid Liquids
Materials
Body SUS316 or SCS14A
Bluff body (delta shaped)
SUS316
Adapter SUS304 or SCS13A
Accuracy
Depends on service conditions (flow range).
(1) ±1% of reading or better
(2) ±1% of full scale or better
Finish Not painted (since the material is stainless steel)
NOTE: * Except for the items above, specifications remain the same as EX DELTAⅡbasic body.
* Meaning of full scale: rated maximum flow

D-586-2-E
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●Flange Ratings and Maximum Operating Pressures (Mpa)
Nominal Dia. 10 to 300mm (SUS316 or SCS14A)
Flange Rating
Operating Temp.
JIS10K JIS16K JIS20K JIS30K ASME/
JPI 150
ASME/
JPI 300
ASME/
JPI 600
DIN
PN10
DIN
PN16
DIN
PN25
DIN
PN40
120℃and below 1.40 2.70 3.40 5.00 1.50 3.93 7.86 0.74 1.19 2.05 2.99
Above 120 to 220°C 1.18 1.96 2.45 4.51 1.27 3.35 6.74 0.62 1.00 1.78 2.50
Above 220 to 300°C 0.98 1.77 2.26 4.22 1.02 3.06 6.18 0.56 0.90 1.61 2.26
Above 300 to 350°C—1.57 1.96 3.82 0.84 2.96 5.93 ————
Above 350 to 420°C———2.94 0.57 2.81 5.61 ————
Above 420 to 460°C————0.42 2.71 5.44 ————
Nominal Dia. 200 to 300mm (SFVC2A)
Flange Rating
Operating Temp.
JIS10K JIS16K JIS20K JIS30K ASME/JPI 150 ASME/JPI 300
120℃and below 1.40 2.70 3.40 5.00 1.69 4.59
Above 120 to 220°C 1.18 2.45 3.04 4.51 1.32 4.31
Above 220 to 300°C 0.98 2.26 2.84 4.22 1.02 3.87
Above 300 to 350°C—2.06 2.55 3.82 0.84 3.70
Above 350 to 420°C—1.57 1.96 2.94 0.56 2.88
NOTE: * Refer to us in case of ASME/JPI600 and maximum operating pressure exceeding 5MPa.

D-586-2-E

2.3 Indicated Units of Measurement
2.3.1 EX DELTA Ⅱ, Indicated Units of Measurement
Shown in this table are the units of measurement indicated at volume flowrates.
Appli-
cable fluid
Nominal Dia. mm
(inch)
Max. flowrate, m3/h
(Pulse frequency, Hz) Nominal meter factor, L/P Indicated units of measurement (m3) (standard)
Liquid
10 (3/8) 2.8 (453.8) 0.001714
0.0115 (1/2) 6.0 (312.2) 0.005338
25 (1) 20 (344.4) 0.01613
40 (1-1/2) 48 (292.7) 0.04556
0.1
50 (2) 79 (219.2) 0.1001
80 (3) 172 (143.6) 0.3328
100 (4) 296 (108.7) 0.7567
150 (6) 645 (74.0) 2.422
1
200 (8) 1130 (44.7) 7.021
250 (10) 1750 (35.9) 13.54
300 (12) 2510 (30.0) 23.24
Gas
15 (1/2) 33 (1717) 0.005338 0.01
25 (1) 130 (2239) 0.01613 0.1
40 (1-1/2) 290 (1768) 0.04556
50 (2) 490 (1360) 0.1001
180 (3) 1380 (1152) 0.3328
100 (4) 2370 (870.0) 0.7567
150 (6) 5160 (591.8) 2.422
10
200 (8) 9100 (360) 7.021
250 (10) 14000 (287.0) 13.54
300 (12) 20100 (240.0) 23.24
*1 Q: Volume flowrate, m3/h (NOTE: The table above has been partially revised in Sep. 30,1998.)
2.3.2 EX DELTA ⅡDIA, Indicated Units of Measurement
Appli-
cable fluid
Nominal Dia. mm
(inch)
Max. flowrate, m3/h
(Pulse frequency, Hz) Nominal meter factor, L/P Indicated units of measurement (m3) (standard)
Liquid
15 (1/2) 6.0 (322.5) 0.005168 0.01
25 (1) 20 (375.4) 0.01480
40 (1-1/2) 48 (242.4) 0.05500
0.150 (2) 79 (190.7) 0.1151
80 (3) 172 (121.1) 0.3946

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2.4 Transmitter Specifications
Item Contents
Model PAF5
Mounting Structure Flowmeter Integrated Type
Separated Type (2B (50A) pipe mounting), Max. 50m between Sensor and Transmitter
Directive and
Standard
EMC EN 61326-1; FCC 47 CFR part 15 (Applicable only for flowmeter integrated type)
RoHS EN 50581
Explosionproof
Flameproof construction
Sensor for Flowmeter Integrated, Separated Type: Ex d IIB + H2T4
Transmitter for Separated Type (alone): Ex d IIC T6 Gb
Waterproof Structure JIS C 0920 (IEC IP66/67), Seal: Silicon
Ambient Temperature
Explosionproof: - 20 to +40°C, 50°C, 60°C (Refer to Explosionproof Temperature Specification
Table (Integrated Type, Separated Type))
Non-explosionproof: - 40°C to +70°C
Ambient Humidity 5 to 100% RH, No condensation inside enclosure
Main Body Material Aluminum Die Casting
Case Painting Polyurethane Painting (in conformity to ISO12944, Category C4-M)
Paint Color Main Body Part: Munsell 10B8/4, Lid (Front-Back): Munsell 2.5PB4/10
Display
Character Height: Upper Line 10.5mm, Lower Line 7mm, display rotation by optical switch
(1) Resettable Total display with 8 digits (Max. 7 digits Integer + Decimal Number)
(2) Accumulated Total Display with 8 digits
(3) Instantaneous Flow Rate Display (Selected from /day, /h, /min./ sec)
(4) Instantaneous Flow Rate Bar-Graph Display
Low Battery Alarm ( ), Switch Operation Display ( ), Alarm Display,
Key Lock Display ( ) with backlight
Power Source
Dedicated Battery *
Transmitter Integrated Type: 7 year lifetime with 24H continuous operation
Transmitter Separated Type: 4 year lifetime with 24H continuous operation
Battery life varies depending on setting, configuration, operating environment, etc.
Dimensions 112W x 133H x 148D (mm) (Excluding protrusions)
Data Protection
Store all settings in EEPROM. Backup of accumulation every minute. Data retention for more
than 10 years
Parameter setting can be protected by password.
Weight Approx. 1.9kg (2.0kg including pressure-resistant packing)
Wire Connection
(Separated type only)
Electric Wire Connection Port: M25 female screw
Transmission Distance: 50m, max.
Cable: Greater than 1.25m2, 3-conductor shield cable, finished outer diameter:
Non-Explosionproof: Less than φ13mm
Explosionproof: φ8.5 to φ11mm
Connection Terminal Board: Cross recess screw, M3
Pressure-Resistance Packing:
・Transmitter Side: KBX-25, 16 ORES or ORE
・Sensor Side: KXY-16 (Common to PA25)
NOTE: * Please contact us about battery replacement.