Oval ALTImass CA004 User manual

1
Ins. No. L-737-3-E
Sensor Unit MODEL : CA004
Transmitter MODEL : PA0K
Extra-high pressure service Coriolis flowmeter
Every OVAL product is fabricated, tested, and inspected under stringent quality control before it leaves our
factory.
To derive maximum benefit from this product, we recommend you to be well familiar with the information and
instructions given in this manual before you place it in service, and keep this manual handy for quick reference.
ALTI mass

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CONTENTS
1. BEFORE YOU BEGIN ............................................................................................ 5
1.1 Confirming the Tag Information ................................................................................................... 5
1.2 Transportation Considerations ....................................................................................................6
1.3 Storage Considerations ...............................................................................................................6
1.4 Operating Conditions ..................................................................................................................6
1.5 Precautions at Installation ...........................................................................................................6
1.6 Precautions for power-on ............................................................................................................6
1.7 Returning Equipment ...................................................................................................................6
2. GENERAL AND FEATURES ................................................................................. 7
2.1 General ........................................................................................................................................ 7
2.2 Features ......................................................................................................................................7
3. SPECIFICATIONS AND PERFORMANCE ............................................................. 7
3.1 Sensor Unit ..................................................................................................................................7
3.1.1 General Specifications............................................................................................................7
3.1.2 General Performance .............................................................................................................8
3.1.3 Pressure Loss ........................................................................................................................8
3.2 Transmitter General Specifications .............................................................................................9
4. PART NAMES AND OUTLINE DIMENSIONS .................................................... 10
5. INSTALLATION .................................................................................................... 12
5.1 Considerations at Installation .................................................................................................... 12
5.2 Physical Orientation .................................................................................................................. 12
5.3 Piping Instructions ..................................................................................................................... 12
5.3.1 Standard Piping Conditions ................................................................................................. 12
5.3.2 Influences of Vibration and Pulsations ................................................................................ 13
5.3.3 Prevention of Cavitation ...................................................................................................... 13
5.3.4 Prevention of Excessive Flow Rate...................................................................................... 13
5.3.5 Keeping the Sensor Unit Completely Filled ......................................................................... 13
5.3.6 Bypass Line ........................................................................................................................ 13
5.4 Installation Instructions ............................................................................................................. 14
5.5 Sensor Unit-to-Tubing Connection Guidelines .......................................................................... 14
5.5.1 Machining the Female Connector (for reference purpose) ................................................. 14
5.5.2 Connection Procedure ........................................................................................................ 15
5.6 Securing the Sensor Unit and Tubing Clamps .......................................................................... 16
5.7 Heat Insulation Work ................................................................................................................. 17
5.8 Separately Mounted Transmitter Installation ............................................................................. 18
5.9 How to Change Transmitter Orientation .................................................................................... 19
5.10 How to Change Transmitter Display Orientation .....................................................................20
6. WIRING INSTRUCTIONS ..................................................................................... 22
6.1 Terminal Box Cover Removal ....................................................................................................22
6.2 Wiring Connections....................................................................................................................22
6.2.1 Cable lead-in ....................................................................................................................... 22
6.2.2 Power and output signal connections (both integrally and separately mounted models)....23
6.2.3 Connections between separately mounted sensor unit and transmitter.............................. 24
6.3 Power Supply Lines and Ground Terminal................................................................................. 24
6.4 Analog Output Wiring.................................................................................................................24
6.5 Pulse Output Wiring ................................................................................................................... 24
6.6 Status Output Wiring..................................................................................................................25
6.7 Status Input Wiring.....................................................................................................................25
6.8 Communication Line Wiring (option) ..........................................................................................26
6.9 Recommended Cables for Use in Output Signals .................................................................... 26

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6.10 Terminal Identification of Remotely Mounted Transmitter ....................................................... 26
6.11 Wiring Diagram ........................................................................................................................ 27
6.11.1 Transmitter power and output signal wiring.........................................................................27
7. REMOTELY MOUNTED TRANSMITTER AND SENSOR UNIT WIRING ........... 28
8. OPERATION......................................................................................................... 29
8.1 Flushing the Piping Assembly ....................................................................................................29
8.2 Confirming the Sensor Unit for Correct Installation ...................................................................29
8.3 Leak Check ................................................................................................................................29
8.4 Supplying the Power ..................................................................................................................29
8.5 Measurement Line Startup.........................................................................................................29
8.6 Warm-up ................................................................................................................................... 29
8.7 Zeroing Procedure .....................................................................................................................29
8.8 Readying for Operation..............................................................................................................29
9. DESCRIPTION OF INCORPORATED FUNCTIONS ............................................ 30
9.1 Display........................................................................................................................................30
9.1.1 Description of display ...........................................................................................................30
9.1.2 Switch operation ................................................................................................................... 31
9.1.3 Viewing the variables........................................................................................................... 32
9.2 Viewing the Parameters and Description...................................................................................34
9.2.1 Viewing the setup menu .......................................................................................................35
9.2.2 Transition chart of view (1) ...................................................................................................36
9.2.3 Transition chart of view (2) ...................................................................................................38
9.2.4 Transition chart of view (3) ...................................................................................................40
9.2.5 Transition chart of view (4) ...................................................................................................42
9.2.6 Transition chart of view (5) ...................................................................................................44
9.2.7 Transition chart of view (6) ...................................................................................................46
9.3 Parameter Value Entry ...............................................................................................................48
9.4 Parameter Selection...................................................................................................................49
9.5 Password Function.....................................................................................................................50
9.5.1 Password function setup ......................................................................................................50
9.6 Self-diagnostic Capabilities........................................................................................................ 51
9.6.1 Probe check ......................................................................................................................... 51
9.6.2 Drive coil check....................................................................................................................52
9.6.3 Transmitter check.................................................................................................................53
9.6.4 Pipeline oscillation check (at zero flow)................................................................................54
9.6.5 Pipeline oscillation check (normal flow) ...............................................................................55
9.7 Simulated Signal Input/Output Capabilities................................................................................56
9.7.1 Analog output .......................................................................................................................56
9.7.2 Pulse output......................................................................................................................... 57
9.7.3 Status output.........................................................................................................................58
9.7.4 Status input...........................................................................................................................59
9.8 Zeroing Function ........................................................................................................................60
9.8.1 Through LCD display switches .............................................................................................60
9.8.2 Through status input signal.................................................................................................. 61
9.8.3 Through Link Top communication........................................................................................61
9.9 Analog Trim Function .................................................................................................................62
9.10 Reset Function..........................................................................................................................63
9.11 View Variables Screen Setup ...................................................................................................64
9.12 Pulse Output Function ..............................................................................................................65
9.12.1 Pulse output 1 .....................................................................................................................65
9.12.2 Pulse output 2.....................................................................................................................65
9.12.3 Bidirectional pulse output ...................................................................................................66

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9.12.4 Double pulse input.............................................................................................................. 67
9.13 Analog Output Function............................................................................................................68
9.14 Status Output Function.............................................................................................................69
9.14.1 Status output (Error Status).................................................................................................69
9.14.2 Bidirectional flow direction output (Bi Direction).................................................................69
9.14.3 H/L alarm output (H/L Alarm) ............................................................................................. 70
9.14.4 No assignment (No Function) ............................................................................................ 70
9.14.5 No assignment (No Function) ............................................................................................70
9.15 Status Input Function................................................................................................................ 71
9.15.1 Pulse/analog output fixed at 0% (0% Sig Lock) ................................................................. 71
9.15.2 Zero adjustment (Auto Zero) .............................................................................................. 71
9.15.3 Totalizer 1 and totalizer 2 reset (Reset Total 1 and 2) ........................................................ 71
9.15.4 Totalizer 1 reset (Reset Total 1) ......................................................................................... 72
9.15.5 Totalizer 2 reset (Reset Total 2) .........................................................................................72
9.16 High/Low Alarms Function........................................................................................................73
9.17 Gas Mixed Flow Alarm.............................................................................................................. 75
9.18 Setup Units List.........................................................................................................................77
10. MAINTENANCE .................................................................................................. 78
10.1 Error Messages ........................................................................................................................78
10.2 List of Status Messages ...........................................................................................................79
10.3 Replacement Parts...................................................................................................................80
10.4 Explosionproof specification .................................................................................................... 81
10.5 Precautions on the explosionproof specification......................................................................82
10.5.1 About the explosionproof....................................................................................................82
10.5.2 About handling of the flameproof enclosure .....................................................................82
10.5.3 Insulation performance ......................................................................................................84
10.5.4 Earthing terminal ...............................................................................................................84
10.5.5 About dedicated cable (for only separate type) .................................................................84
10.5.6 Maintenance and checking ................................................................................................85
11. EX-INFORMATION .............................................................................................. 86
11.1 Nameplates...............................................................................................................................86
11.2 System Block Diagram (Control Drawing) ................................................................................ 87
11.3 Inductance and Internal Resistance of Sensor Coil .................................................................89
11.4 Regarding FISCO System of FOUNDATION fieldbus and PROFIBUS ...................................89
11.5 Explosionproof Applicable Temperature (Integrally Mounted Type Only) ................................ 91
12. ABOUT MARITIME CERTIFICATION ............................................................... 92
13. PRODUCT CODE EXPLANATION ................................................................... 93
■SHIPPING PARAMETERS ..............................................................................................................94
■SAFETY STATEMENT ON RETURNED GOODS ..........................................................................96
■REPAIR REQUEST SHEET.............................................................................................................97
This manual uses the precaution words "NOTE", "CAUTION", and "WARNING" as explained
below:
NOTE: Notes are separated from the general text to bring the user's attention to
important information.
CAUTION: Caution statements inform the user of hazards or unsafe practices which
could result in minor personal injury or product/property damage.
WARNING: Warning statements inform the user of hazards or unsafe practices which
could result in severe personal injury or death.

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1. BEFORE YOU BEGIN
Once you receive the product, it should be thoroughly inspected for any sign of damage by rough handling
during transit.
Carefully read the precautionary notes on handling in this section.
If you have something to inquire, contact the nearest OVAL sales/service office in your
district.
NOTE: When you inquire, please provide information such as product name, model number, serial
number, ratings, etc.
Fig. 1.1 Product Tag and Location
1.1 Confirming the Tag Information
Product code and major ratings appear on the meter nameplate. Make sure that the product you received
complies with the specifications in your order.
Item Description
MODEL Product model
SERIAL NO. Serial number
MAX. PRESS. Max. operating pressure
MAX. TEMP. Max. operating temperature
FLOW RANGE Flow range
POWER Power
TAG NO. Instrument No. (only when specified)
BORE Nominal size
DATE Date of manufacture

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1.2 Transportation Considerations
(1) The OVAL flowmeter can best be transported to the installation site in the shipping container used for
transit from the factory.
(2) Avoid impact shocks during transit.
1.3 Storage Considerations
If the meter is to be stored for extended periods of time upon receipt before installation, unexpected problems
could arise. If such is the case, the following considerations should be taken:
(1) The flowmeter can best be stored in the original package used for transit from the factory.
(2) The place of storage should meet the following requirements:
󱾀Free from rain and water
󱾀Free from vibration and impact shock
󱾀Storage/shipping conditions
Temperature：20±15℃Relative humidity：65±20％Barometric pressure：500 to 1060hPa
1.4 Operating Conditions
In order to maintain the designed metering accuracy and long service life, it is essential that the ratings, such
as the flow rate, pressure, and temperature be kept within the specified limits. These operating conditions are
stated in Sections "3. SPECIFICATIONS AND PERFORMANCE" and "13. PRODUCT CODE EXPLANATION" of
this manual. Make sure to fully understand them before placing the meter in service.
◦If the process fluid is corrosive, the meter materials must be reviewed for compatibility.
◦Cleanse the interior of flow tube thoroughly after use for measuring fluids that tend to deposit
solids. If solid deposits adhere to flow tube, it can affect the meter accuracy.
◦If you need to change operating conditions, consult OVAL.
◦Some gasmixtures that are not homogeneous cannot be measured. Consult OVAL for applicability.
1.5 Precautions at Installation
CAUTION: To ensure accurate and stable measurement, the Coriolis flowmeter should be
installed in a location where piping vibration will not exceed 0.3G.
1.6 Precautions for power-on
Be sure to close the display lid and the terminal lid of the transmitter before turning on the power. The
explosionproof enclosure must be ensured (with the requirements stated in section 10.5 satisfied) before use.
To ensure the stable measuring condition, allow 20 minutes of warm-up period. "WARM UP 20" will be
displayed for 20 minutes after powering-on. The number indicates remaining warm-up period (min.).
1.7 Returning Equipment
If the meter must be returned to OVAL for any reason, follow these steps to ensure the most efficient
processing.
(1) Clean the unit and flush out the flow tube and pack the sensor unit carefully. Fully document the fluid.
Inadequate information will delay handling of the meter. (⇨Fill in the forms prepared on pages 96 and 97.)
(2) Enclose complete information about the contents being returned including model and serial numbers,
the reason for return, return address, and full documentation of the type of fluid in writing.
(3) Pack the equipment carefully, using the original packing if possible.
(4) Return the complete flowmeter, including, for instance, the transmitter with all associated components.
Remove the conduit connections and all other parts not originally shipped with the meter (for
example, wiring connections).
Be sure to completely remove any foreign matter inside the sensor unit . Because the sensor
unit cannot be disassembled, OVAL will not be able to clean residue inside the tube and service
your meter.

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2. GENERAL AND FEATURES
2.1 General
Our concentrated effort in developing true state-of-the-art measuring devices and specialized manufacturing
experience in Coriolis technology has resulted in this extra-high pressure service Coriolis flowmeter
characterized by outstanding performance, ease of use, and increased safety.
It consists essentially of a sensor unit and a transmitter (PA0K). Equipped with a high performance transmitter
having a self-diagnosis function, large screen display, and the capability to change settings on-site by
touchscreen, This Coriolis flowmeter can directly measure mass flow rate with high accuracy.
2.2 Features
(1) High accuracy and high sensitivity.
(2) Accepts both liquid and gas. Measures a wide flow range accurately.
(3) Measures temperature besides mass flow rate.
(4) Branchless flow path design offers ease of cleaning.
(5) No welded point in the wetted parts −a truly dependable design suitable for high pressure gas
measurement.
(6) The wetted parts are made of XM-19 which is resistant to hydrogen embrittlement. Therefore this model is
especially suitable for the flow measurement of high-pressure hydrogen.
(7) The meter casing has a high mechanical rigidity for ease of use, reducing space requirements, and
increasing process safety.
(8) Explosionproof design allows for its use in hazardous locations.
3.1 Sensor Unit
3.1.1 General Specifications
Item Description
Model CA004
Measuring Tube O.D. 9/16󱼫
Materials Wetted parts TPXM-19 UNS S20910 SA-312
Housing SUS304
Connector connection High-press. cone & thread connection, size 9/16 562C
(male thd. 1•1/8-12UNF)
Acceptable fluids Liquid and gas ※1
Density range 0 to 2.0 g/mL
Temperature range
(Structural rating) −40 to +130℃
Max. operating pressure 120MPa (at 93℃)
Flow direction Forward and reverse, both available
Explosionproof configuration (See the topic under 10.4 Explosionproof specification)
Weight
(Terminal box and mtg. base incl.) Approx. 21kg
※1: For hydrogen gas at 20℃, the required operating pressure [MPa] can be calculated as
measuring flow rate [kg/h] times 0.19. (e.g. approx. 22.8MPa or more when 120 kg/h)
For the precise required operating pressure, contact OVAL.
※: For the High Pressure Gas Safety Act applicable model, contact OVAL.
NOTES
3. SPECIFICATIONS AND PERFORMANCE

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3.1.2 General Performance
Item Description
Model CA004
Flow rate
Max. allowable rate 300kg/h
Max. service rate 120kg/h
Min. setting rate 6kg/h
Guaranteed min. rate 2.4kg/h
Accuracy Less than 9.6kg/h ±0.05% of max. allowable rate
9.6kg/h or above to 300kg/h or less ±0.5% of RD
Repeatability Less than 9.6kg/h ±0.025％of max. flow rate
9.6kg/h or above to 300kg/h or less ±0.25% of RD
Analog output accuracy ±0.1% of FS added to each accuracy
Pressure loss
(Reference)
Water: at Max. allowable
rate 1.15MPa
CAUTION: 1. Since the casing of sensor unit is not pressure resistant, the withstanding pressure rating
of the casing is not indicated. To afford adequate protection to personnel, an Rc 1/4 boss is
provided in an area shown in Fig. 4.1; Use customer's discretion in providing a rupture disc,
pressure switch, etc. Rupture disc pressure rating and pressure switch setting is 7 MPa (G).
A precaution to remember: removing the Rc 1/4 plug with the boss pointing downward may
result in the leakage of inert argon gas. In this case, refill with an inert gas, such as argon.
For further details of treatment, consult OVAL.
2. Density measurement and volumetric flowmetering are unacceptable.
3.1.3 Pressure Loss
◎How to determine pressure loss (liquids only)
(1) Find the pressure loss coefficient C from the flow rate (kg/h) and viscosity of parameter (mPa・s). Dividing this
value C by specific gravity d (1 for water) gives the pressure loss, thus
(2) For high-viscosity liquids not shown in the graph, calculate the pressure loss by using the following equation:
where ΔP2 : Pressure loss of high-viscosity liquid (MPa)
μ2: Viscosity of high-viscosity liquid (mPa･s)
d : Specific gravity of high-viscosity liquid (1 for water)
μ1: Maximum viscosity shown in the graph (mPa･s)
C : Pressure loss coefficient found from the maximum viscosity curve at a given flow rate (kg/h)
(3) For pressure loss of gases, consult OVAL.
󱾀CA004
Pressure loss coeff., C
Flow rate (kg/h) Fig. 3.1
ΔP2＝C× × 1
d
μ2
μ1
d
C
ΔP＝ （MPa）
0.00001
0.1 1 10 100 1000
0.0001
0.001
0.01
0.1
1
10
100
1000mPa・s
100mPa・s
10mPa・s
1mPa・s
0.01mPa・s

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3.2 Transmitter general specifications
Item Description
Model PA0K
Power supply 85 to 264VAC 50/60Hz or 20 to 30VDC
(Safety rated 100 to 240VAC 50/60Hz)
Power consumption Max. 15W
Ambient temperature －40 to +55℃( ※1)
Transmission length (separate type) Max. 200m (Dedicated cable used) ( ※2)
Applicable EU directive
EMC Diective ：2014/30/EU
ATEX Diective：94/9/EC
LVD Diective ：2014/35/EU
Applicable EN standards
EMC ：EN61326-1：2013 ClassA
ATEX：EN60079-0：2012 EN60079-1：2007 EN60079-11：2012
IECEx：IEC60079-0：2011 IEC60079-1：2007-04 IEC60079-11：2011
LVD ：EN61010-1：2010
Explosionproof configuration ATEX, IECEx, KCs, CSA, GOST, NEPSI
(See the topic under 10.4 Explosionproof specification)
Maritime certification DNV GL (Refer to section 12)
Dusttight, waterproof configuration IP66 / 67
Transmitter configuration Integral or separately mounted
Finish Sensor: Munsell 10B8/4, Covers (front and rear): 2.5PB4/10
Display LCD display provided (128 ×64 dots), backlit (white, orange)
Infrared light sensors: 2, LED: 2 (green, red)
Weight Integrally mounted model 3.6kg approx., Separately mounted model 5.0kg approx.
Communication interface
※Optional except for HART
HART (Standard) HART protocol version 7, Bell202 ( ※3)
Modbus RS-485 Modbus protocol, Baudrate : 9600bps, 19200bps, 38400bps
RTU or ASCII, Response time : 25 to 50 ms
FOUNDATION
fieldbus AI block ×4, IT block ×2, with Link Master function
PROFIBUS PA AI block ×4, TOT block ×2
Damping (default) Flow rate 0.8sec, density 4sec, temperature 2.5sec.
Low flow cutoff (default) Under 0.6% of max. service flow rate
Pulse output ( ※5)
Open drain output (equivalent to open collector output ) [Min. 10V to Max. 30V, 50mADC, ON
resiatance 0.6Ωor less] or
Voltage pulse (Low level: 1.5V max., High level: 13V min. Output impedance: 2.2k Ω)
Setting range: 0.1 to 10000Hz (Max. output 11000Hz)
Analog output ( ※5) 4 to 20mADC (max. load 600Ω)
Select two outputs from instant flowrate (mass or volume) temperature, and density.
Status output ( ※5)
Open drain output (equivalent to open collector output ) [Max. 30V, 50mADC, ON resiatance
0.6Ωor less]
Select one output from error ( ※4), flow direction, or high/low alarm (default is error)
Status input ( ※5)
Contact-closure input (Form "a" contact) Short: 200 Ωmax., Open: 100k Ωmin.
Select one output from remote zero, total reset, 0% signal lock, or function off (default is
function off).
※1: Below -20℃, the display loses its visibility due to weakened contrast. Both the display and infrared sensor
may exhibit slow responses below -20℃.
※2: If signal transmission length exceeds the maximum transmission length, consult OVAL.
※3: Of the two analog output systems,only analog output 1 is available for HART communication.
※4: Of error outputs, "zero is in progress" status output can also be set up.
※5: When FOUNDATION fieldbus, PROFIBUS PA is selected as the communication interface, all input and
output signals will be turned off.
※: Denoising parts are embedded in the lines between power source, output, communication, and the chassis.
Lower the applied voltage to the following levels in order to conduct insulation test or withstand voltage test
on these lines.
AC: 200V, DC: 250V
NOTES

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4. PART NAMES AND OUTLINE DIMENSIONS
Fig. 4.1 Outline Dimensions
●
Transmitter integrally mounted
2-Rc1/4 Inert Gas Filler Opening
Normally sealed with Rc1/4 plug
Rupture disk, pressure switch, etc.
may be connected here.
The sections indicated by dashed-dotted line are to be implemented by the user
(With rupture disk for implementing option)
Recommended joint: Swagelok tube joint
Model: SS-810-1-4RT (External thread: 1/4B, External diameter of tube: 1/2B)
43.4
The sections indicated by dashed-dotted line are to be implemented by the user
(With rupture disk for implementing option)
Recommended joint: Swagelok tube joint
Model: SS-810-1-4RT (External thread: 1/4B, External diameter of tube: 1/2B)
43.4
View A−A
View A−A
272 457
A A
115
67
96
4-M6 Hex socket bolt
Tighten M6 bolts of the joint clamp
after fixing the joint connection.
High-press. Cone & Thread
Conn., 9/16 dia. 562C
192
229
φ134
φ115
60
15
64
2-M5 Body GND
8-φ14.5
4-M10 Meter fitting bolt (embedded)
4-M10 Meter fitting bolt (embedded)
2-Rc1/4 Inert Gas Filler Opening
Normally sealed with Rc1/4 plug
Rupture disk, pressure switch, etc.
may be connected here.
127
230
200
160
200
160
200
160
96
96
98
272
4-M6 Hex socket bolt
Tighten M6 bolts of the joint clamp
after fixing the joint connection.
High-press. Cone & Thread
Conn., 9/16 dia. 562C
Conduit
Connection
G3/4
A A
457
192174
φ115
15
φ107
2-M5 Body GND
8-φ14.5
200
160
96
●
Transmitter separately mounted

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●
Separately mounted Transmitter
φ134
67
4-M6×8
230
127 103
100
64
7
50
125
60
188
60
30
60
30
344
233
61.7 171.5
46
CableentryG3/4
CableentryG3/4
Hold-down
hardware
(2×1)
Stanchion(2)
Fig. 4.2 Outline Dimensions of Transmitter
※Hold-down hardware are supplied as standard accessories, but the customer is to furnish the stanchion.
Dimensions in millimeters

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5. INSTALLATION
5.1 Considerations at Installation
(1) Select a location easy to access for inspection and maintenance.
(2) Avoid locations subject to severe temperature variation and vibration.
(3) Avoid direct exposure to the sun. (Provide a sunshade or visor if necessarry.)
(4) Avoid locations where there is a risk of immersion in water.
(5) Select a location free from an atmosphere of corrosive gases.
(6) Location should be free from dust and mist.
(7) Keep a distance of at least one meter from sources of electromagnetic induction, such as large
transformers and motors. Install sufficiently away from motors, pumps, or other sources of high vibration.
(8) To ensure consistent and accurate measurement, adhere to the instructions for tubing clamps on page 16.
(9) To ensure accurate and consistent measurement, use the Coriolis flowmeter in a location where piping
vibration is kept below 0.3G.
(10) Instal the control valve downstream of the flowmeter.
Where cavitation may possibly occur, install the valve at least five meters away from your meter.
5.2 Physical Orientation
Physical orientation does not affect the performance of this unit. It can be installed either in a horizontal or
vertical run. However, with metered fluids that tend to produce bubbles and/or sediments, or where process
fluid removal or purging is conducted after measurement, install the unit in a vertical run.
5.3 Piping Instructions
5.3.1 Standard Piping Conditions
(1) A Coriolis mass flowmeter is unaffected by the
flow pattern of process fluid.
T h e r e f o r e , i t d o e s n o t r e q u i r e a n y f l o w
strai ghtener. However, connecti on with a
deformed pipe requires use of a concentric
reducer or tapered pipe.
(2) Locate the meter sufficiently away from known
sources of vibration and pulsation.
(3) For zeroing, provide a valve that can stop the
flow completely downstream of the meter. We
recommend to provide another valve upstream
of the meter for servicing.
(4) Avoid piping stress concentration on the sensor.
CAUTION: Although this meter is designed for installation on a mounting base, piping
clamps must be provided both upstream and downstream of the meter.
Fig. 5.1 Standard Piping Conditions
Flow
Direction
Valve Valve

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5.3.2 Influences of Vibration and Pulsations
Generally, Coriolis mass flowmeters can best make measurements with minimal pipeline vibration and
pulsations. In applications where vibration and pulsations are not negligible, take the following measures:
(1) Locate the meter sufficiently away from the sources of vibration and pulsations.
(2) Provide attenuators, such as flexible tubes and chambers. However, if this meter itself is the very source
of transmitting vibration to these elements during its operation, a drift in zeroing may result.
To get around this problem, take necessary countermeasures by, for example, locating such elements of
vibration sufficiently apart from the meter.
(3) Close shutoff valves upstream and downstream of the meter at process flow shutdown. (For the sake of
preventing erratic signal generation at shutoff, be sure to prevent pressure buildup inside from exceeding
the max. allowable pressure of the meter.)
(4) If meters of the same kind are to be installed in the same tubing, locate them sufficiently apart (at least 5
times the face-to-face length across the meter) and secure each meter with sturdy supports.
5.3.3 Prevention of Cavitation
Cavitation can cause a loss of meter accuracy in measurement. Maintain line pressures that will not cause
cavitation upstream and downstream of the meter for this reason. Avoid making such an arrangement as to
open the line to the atmosphere immediately downstream of the meter. Care must be exercised particularly in
handling liquids of low steam pressure.
In practice, recommended minimum back pressure (pressure on the downstream side) of the meter is calcu-
lated by the formula:
Pd＝3ΔP＋1.3Pv
Where Pd : Downstream pressure (MPa [absolute])
ΔP: Pressure loss across the flowmeter (MPa)
Pv : Steam pressure at the temperature during measurement (MPa [absolute])
5.3.4 Prevention of Excessive Flow Rate
CAUTION: Exceeding the meter's maximum flow rate will not significantly reduce the
meter's long term durability. However, the output will be held at 110% of the
allowable full scale flow rate.
5.3.5 Keeping the Sensor Unit Completely Filled
CAUTION: The sensor must be filled with the process fluid during measurement.
A partially filled sensor unit results in large errors particularly at zeroing.
5.3.6 Bypass Line
For maintenance and servicing, it is good practice to provide a bypass loop.
Fig. 5.2 Bypass Line
Flow
Direction
Valve Valve
Bypass Line
Valve
ALTImass

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5.4 Installation Instructions
This equipment (sensor unit) is connected to the
piping with high pressure cone & thread fitting, 9/16"
dia. 562C. (Connection examples are shown in Figs
5.3 and 5.4.)
Connector: High pressure cone & thread connection,
9/16" dia. 562C (male thread 1・1/8 - 12UNF)
Set the collar so that the groove faces out.
5.5 Sensor Unit-to-Piping Connection Guidelines
5.5.1 Machining the Female Connector (for reference)
Fig. 5.5 is a machining drawing for preparing the high pressure cone & thread connection, female
connector. See also Fig. 5.6 "Detail Drawing of Connectors".
Fig. 5.3
Sensor Unit (body)
Sensor Unit (connector)
Piping (Connectors)
Piping
Fig. 5.4
M6 Hex Soc. Hd. Bolts
Connector
Clamp
9/16−18UNF LH
Gland Nut
Collar
Fig. 5.5
To the Meter
(Sensor Unit)
Weep Hole φ2.34
(2 places)
φ6.5 max. must
be kept strictly.

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5.5.2 Connection Procedure (See Figs. 5.4 and 5.6.)
(1) Loosen two M6 hex socket head bolts attached to the connector clamp.
(2) Slide the gland nut onto the male connector and insert the collar as shown in Fig. 5.6 (reverse thread).
Collar position is correct if it has been screwed in to the point where one or two threads are visible at the
end of male connector. Normally it is installed in place at our factory.
(3) Ensure that both the cone of the male connector and the customer furnished female connector are clean.
(4) Insert the male connector into the female connector and finger tighten the gland nut. Ensure that the male
connector and female connector are aligned in their axis at this time.
(5) Tighten the gland nut to a tightening torque not exceeding 279kgf・cm [27.4N・m]. When tightening,
hold the female connector using a wrench.
(6) Insert the connector clamp until it comes to the stepped part of the sleeve.
(7) Tighten two M6 hex socket head bolts attached to the connector clamp to secure the gland nut-to-sleeve
firmly.
Fig. 5.6 Detail Drawing of Connectors (high pressure cone & thread connection, 9/16" dia. 562C)
Male Connector
Collar
1・1/8-12UNF
Gland Nut
M6 Socket Head Bolt (2 Places)
Metal Seal
9/16-18 UNF LH
Female
Connector
Sleeve
Connector
Clamp
Flowmeter
Body

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5.6 Securing the Sensor Unit and Piping Clamps
To ensure accurate and consistent measurement, observe the following guidelines:
This is particularly important in applications where excessive piping vibration is observed, or during low flow
measurement.
◦Secure adequate rigidity between the mounting base and piping clamps both upstream and downstream.
◦Ensure rigid installation of piping clamps without using cushioning materials, such as rubber pads.
◦Secure adequate rigidity of the piping assembly itself from the sensor unit to piping clamps.
◦A change in the spring elements in the area surrounded by dotted lines may cause zero drift.
The sensor unit and mounting base are secured with four M10 bolts (designed to prevent them from
loosening) when shipped from the factory. On the rare occasion you find loose bolts, retighten them.
◦Secure the mounting base to a sturdy pedestal that is firmly fixed to a place without vibration.
CAUTION: Secure the sensor unit firmly to a sturdy pedestal through the mounting base,
using M12 bolts and nuts (customer to furnish). With possible inadequate
seating of the mounting base on the pedestal in mind, OVAL furnishes
eight sets of spherical washers and four sets of flange nuts as standard
accessories with the product. Use them in combination with M12 bolts.
Fig. 5.7 Piping Clamps
Piping Clamp Piping Clamp
Valve
50 to 500mm50 to 500mm
Pedestal
Mtg. Base
400mm
min.
OUT
IN
Increase the rigidity of
the whole assembly
surrounded by dotted
line as high as possible.
Secure firmly using
anchor bolts, etc.

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5.7 Heat Insulation Work
In applications where the process fluid is of low or high temperatures, only the sensor unit should be heat
insulated. Do not insulate the adapter and terminal box. We recommend simple sensor lagging to facilitate
inspection and maintenance. Exclude the transmitter electronics.
(1) Careful attention should be paid to the maximum permissible temperature when steam trace is applied.
Maintain the tracing temperature around that of the process fluid (see General Specifications).
(2) If steam, warm water or oil is used, secure by spot welding the copper tubing, or of other material, to the
sensor unit when you spirally wrap the tubing around the sensor unit (Fig. 5.8).
NOTE: To minimize transmission of oscillation to the sensor, the spirally wrapped copper tubing should
start and end at locations as close to the connector as possible (see Fig. 5.8).
CAUTION:
Do not use electric heaters which can be a source of noise.
Fig. 5.8 Heat Retention Work
Copper
Tubing
Sensor Unit
Tubing
Spot Weld
Tube Retainer
(Material: SUS sheet)
Terminal Box

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5.8 Separately Mounted Transmitter Installation
(1) The maximum transmission cable length varies with the type of sensor unit: locate the transmitter within this
range.
(2) Secure the transmitter to a horizontal or vertical steel pipe 2 inches in nominal size using the U-bolts
furnished as standard accessories.
(3) Installation location should be accessible for maintenance and in good environment.
(4) The customer to furnish the stanchion (steel pipe).
CAUTION
Avoid installation in such location as
①Difficult to access for maintenance and servicing.
②Excessive temperature changes and vibration.
③Potential immersion in water.
Installation on a vertical pipe
U-bolt
(2˝×1) ※
Hold-down hardware ※
※: U-bolts, hold-down hardware and bolts
are standard accessories.
Fig.5.9

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5.9 How to Change Transmitter Orientation
WARNING: Be sure to turn off power before you start working.
To change transmitter orientation, follow the steps given below:
(1) Turn off power.
(2) Make preparations for conduit and cable so that they will by no means cause you any trouble while
changing transmitter orientation.
Work on a level plane with the transmitter up and the sensor secured so that loosening bolts will not
cause the transmitter to come off.
(3) Loosen bolts holding the transmitter adapter with hex wrench. See Fig. 4.10 (M8 hex socket head
screws at four places).
WARNING: You may loosen bolts but never separate the transmitter from
the sensor unit.
(4) Rotate the transmitter to the desired position and secure it with setscrews (four places).
CAUTION
The transmitter may be rotated over an 180°arc as shown in Fig. 5.10, but rotating it
beyond 180°will twist the harness from the sensor unit to the extent the equipment is
damaged.
(5) Confirming that the transmitter is secured in place, make conduit and wiring connections.
(6) Verify that the flowmeter operates properly.
Transmitter rotatable over an arc of 180°max.
Loosen four hex socket head screws (M8) at the
adapter and change the transmitter orientation.
M8 Setscrew
(4 places)
Fig.5.10
Never loosen these screws
located on the transmitter body.
WARNING: Never loosen the hex socket head screws located on the
transmitter body.

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Fig.5.13
5.10 How to Change Transmitter Display Orientation
The transmitter display may be rotated through 360 in steps of 90°within the housing.
WARNING: Be sure to turn off power and discharge your static electricity before you
work.
②Using a flat tool 10mm wide
approx., turn the display lid
counterclockwise to loosen,
and loosen further by hand. (Be
careful so as not to damage the
finish.)
③Disengage the hooks (3 places).
(Recommended tool: Precision
flathead screw-driver)
Fig.5.12Fig.5.11
①Remove the locking part.
Fig.5.15
④Loosen display unit fitting screws (3 places) with
precision flathead screwdriver. "Set washers" to
prevent screws from falling out are attached on the
back of display; do not completely remove screws.
⑤Separate the display unit.
Fig.5.14