Oval ALTI mass Series User manual

1
Ins. No. L-770HP-1-E
Sensor Unit MODEL : CA004
Transmitter MODEL : PA5K
Extra-high pressure service Coriolis flowmeter
Thank you for choosing OVAL's Coriolis flowmeter ALTImass series. Every OVAL product is
fabricated, tested, and inspected under stringent quality control before it leaves our factory.
To derive maximum benefit from the product, we recommend you to be well familiar with the
information and instructions given in this manual before you place it in service and retain this
manual at the field location for ready reference.
ALTI mass
SERIES

L-770HP-1-E
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CONTENTS
1. BEFORE YOU BEGIN ............................................................................................ 4
1.1 Confirming the Tag Information ................................................................................................... 4
1.2 Transportation Guidelines ...........................................................................................................4
1.3 Storage Guidelines.......................................................................................................................4
1.4 Precautions for Operating Conditions .........................................................................................5
1.5 Precautions for Installation Location ............................................................................................5
1.6 Precautions for power-on ............................................................................................................5
1.7 Returning Equipment ...................................................................................................................5
1.8 Precautions on Plug .....................................................................................................................5
2. GENERAL AND FEATURES ................................................................................. 6
2.1 General Description .....................................................................................................................6
2.2 Features ......................................................................................................................................6
3. SPECIFICATIONS AND PERFORMANCE............................................................. 6
3.1 Sensor Unit ..................................................................................................................................6
3.1.1 General Specifications............................................................................................................6
3.1.2 General Performance .............................................................................................................7
3.1.3 Pressure Losses ....................................................................................................................7
3.2 Transmitter General Specifications .............................................................................................8
4. PART NAMES AND OUTLINE DIMENSIONS ...................................................... 9
5. INSTALLATION .................................................................................................... 10
5.1 Installation Guidelines ............................................................................................................... 10
5.2 Physical Orientation .................................................................................................................. 10
5.3 Installation Guidelines ............................................................................................................... 10
5.3.1 Standard Piping Conditions ................................................................................................. 10
5.3.2 Influences of Vibration and Pulsations ................................................................................ 11
5.3.3 Prevention of Cavitation ...................................................................................................... 11
5.3.4 Prevention of Excessive Flow .............................................................................................. 11
5.3.5 Keeping the Sensor Filled with Process Liquid.................................................................... 11
5.3.6 Bypass Loop ....................................................................................................................... 11
5.4 Installation Guidelines................................................................................................................ 12
5.5 Sensor Unit-to-Tubing Connection Guidelines .......................................................................... 12
5.5.1 Machining the Female Connector (for reference purpose) ................................................. 12
5.5.2 Connection Procedure ........................................................................................................ 13
5.6 Securing the Sensor Unit and Tubing Clamps .......................................................................... 14
5.7 Heat Insulation Work ................................................................................................................. 15
5.8 Transmitter Installation .............................................................................................................. 16
6. WIRING INSTRUCTIONS ..................................................................................... 17
6.1 Terminal Box Cover Removal .................................................................................................... 17
6.2 Wiring Procedure ....................................................................................................................... 18
6.3 Connections Between Transmitter and Sensor Unit..................................................................20
6.4 Power Supply Lines and Ground Terminal.................................................................................22
6.5 Wiring Instructions for Input/Output Signal ................................................................................22
6.5.1 Analog output wiring.............................................................................................................23
6.5.2 Pulse output wiring...............................................................................................................23
6.5.3 Status input wiring ...............................................................................................................23
6.5.4 Modbus (RS-485) wiring ......................................................................................................23
6.5.5 Recommended cables condition.......................................................................................... 24
6.6 Insulation Resistance / Withstand Voltage Test.........................................................................24
6.7 How to Change Cable Entry Orientation of Terminal Box (Remote-mount Type) ......................25

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7. OPERATION......................................................................................................... 27
7.1 Flushing the Piping Assembly .................................................................................................... 27
7.2 Confirming the Sensor Unit for Correct Installation.................................................................... 27
7.3 Leak check .................................................................................................................................27
7.4 Supplying the Power...................................................................................................................27
7.5 Measurement Line Startup ......................................................................................................... 27
7.6 Warm-up.................................................................................................................................... 27
7.7 Zeroing Procedure......................................................................................................................27
8. EXPLANATION OF VARIOUS FUNCTIONS........................................................ 28
8.1 Explanation of Each Section of Transmitter ...............................................................................28
8.2 Outline of Various Functions and Settings.................................................................................29
8.3 Write Protect Mode ....................................................................................................................30
8.4 Measurement Parameter Settings .............................................................................................30
8.5 Pulse Output Function................................................................................................................ 31
8.6 Analog Output Function .............................................................................................................32
8.7 Status Input Function .................................................................................................................32
8.8 Status Output Function ..............................................................................................................33
8.9 Higher / Lower Limit Alarm Function..........................................................................................34
8.10 Gas Mixed Flow Alarm Function...............................................................................................36
8.11 Bidirectional Flowrate Output Function.....................................................................................38
8.12 Setup Units List.........................................................................................................................39
9. MAINTENANCE .................................................................................................... 40
9.1 Error Messages ..........................................................................................................................40
9.2 Status Messages........................................................................................................................ 41
9.3 Maintenance / Inspection ...........................................................................................................42
9.4 Replacement Parts.....................................................................................................................42
10. EXPLOSIONPROOF SPECIFICATIONS ............................................................ 43
10.1 TIIS ...........................................................................................................................................43
10.2 System Configuration...............................................................................................................43
10.3 Inductance and Internal Resistance of Sensor Coil.................................................................43
11. PRODUCT CODE EXPLANATION ..................................................................... 44
12. SHIPPING PARAMETERS.................................................................................. 46
■SAFETY STATEMENT ON RETURNED GOODS ..........................................................................48
■REPAIR REQUEST SHEET.............................................................................................................49
The indications NOTE, CAUTION, and WARNING shown throughout this manual are to draw
your attention to specific items:
NOTE: Notes are separated from the general text to bring user's attention to
important information.
CAUTION: Caution statements call attention to user about hazards or unsafe practices
that could result in minor personal injury or property damage.
WARNING: Warning statements call attention to user about hazards or unsafe
practices that could result in serious personal injury or death.

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1. BEFORE YOU BEGIN
This device has been fully inspected at the factory before shipment. When the device is delivered, please make
sure to check the appearance of the device is free from damages from transportation. Please read this section
carefully, as this section contains the necessary precautions for handling.
For any inquiries, call the sales office from which you purchased the product, or contact the
nearest OVAL representative in our customer service network.
◆Reminder ◆
When you make inquiries, include the product name, model No., serial No. and other pertinent
information.
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.
1.2 Transportation Guidelines
(1) To prevent unexpected problems, transport the product to the installation site using the original
manufacturer,s packing for shipment if circumstances permit.
(2) Do not apply strong impact during transportation and avoid exposure to rain or water.
1.3 Storage Guidelines
Unexpected accidents may occur if the arrived device is to be stored for a long period of time before installation.
If long-term storage is anticipated, please be aware of the following items.
(1) Store your product in the manufacturer,s original packing used for shipping if possible.
(2) Place of storage should meet the following conditions.
󱾀Free from rain and water
󱾀Free from vibration or strong impact
󱾀Storage/shipping conditions
Temperature：20±15℃Relative humidity：65±20％Barometric pressure：500 to 1060hPa
●Information stated on the product tag
Item Description
MODEL Product model
BORE Nominal flange size
DATE Date of manufacture
SERIAL NO. Serial No.
MAX. PRESS. Max operating pressure
MAX. TEMP. Max operating temperature
FLOW RATE Flow range
TAG NO. Instrument No. (only when specified)
POWER Power

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1.4 Operating Conditions
In order to maintain metering accuracy and long service life, it is essential that the operating conditions, 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 "11. PRODUCT CODE EXPLANATION" of
this manual. Do not fail to confirm these items before placing the meter in service.
◦If the process fluid is corrosive, meter material must be checked in advance for compatibility.
◦Cleanse the interior of flow tube thoroughly after use for measuring fluids that tend to deposit
solids. A flow tube adhered with solid deposits can affect meter accuracy.
◦If you need to change operating conditions, consult OVAL sales office or nearest representative.
◦Non-uniform gas-liquid multiphase flow or non-uniform solid-liquid multiphase flow may not be
measured properly. consult OVAL sales office or nearest representative for such applications.
◦Blanking plug(s) included upon shipment is (are) only for protection of the screw thread during
transportation and will not guarantee explosion-proof or IP performance. Do not install the device
with this blanking plug connected regardless of explosionproof or non-explosionproof.
1.5 Precautions for Installation Location
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
To ensure the stable measuring condition, allow 20 minutes of warm-up period.
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 48 and 49.)
(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 the deposit of residue on the inner walls of the sensor unit.
Sensor unit cannot be disassembled for flushing the inner tubes. Malfunction diagnosis or
service repair can not be performed.
1.8 Precautions on Plug
CAUTION: The explosion-proof / IP rating of this flowmeter are based on condition that
proper pressure-tight packing(s) are used at the plug(s). Blanking plug(s)
included upon shipment is (are) only for protection of the device during
transportation and will not guarantee explosion-proof or IP performance.
If the device is used under an environment where explosion-proof or IP
performance are required, please be sure to use pressure-tight packing(s).

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2. GENERAL AND FEATURES
2.1 General Description
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.
This device is a Coriolis flowmeter configured with a high-performance sensor unit and a high-performance
transmitter which can measure mass flow 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 section 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 high mechanical rigidity for ease of use, reducing space requirements, and
increasing process safety.
(8) Explosionproof design allows 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
Connection Fitting 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 Bidirectional
Explosionproof configuration TIIS (See the section 10.1)
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, consult OVAL sales office or nearest
representative.
※: For the High Pressure Gas Safety Act applicable model, consult OVAL sales office or nearest
representative.
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 a pressure vessel, the withstanding pressure rating
of the casing is not indicated. To secure safety, a Rc1/4 boss shown in Fig. 4.1 is equipped
to the unit, therefore it is in your discretion to prepare a rupture disc or a pressure switch
to be set on the unit. The rupture disc burst pressure and pressure switch set pressure
is 7MPa(G). Please further note that removing the Rc1/4 plug while the boss pointing
downward may result in leakage of inert argon gas. For such case, refill the casing with
inert gas such as argon gas. For further details of treatment, consult OVAL sales office or
nearest representative.
2. Density and volumetric measurement are not available.
3.1.3 Pressure Losses
◎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 equation will be as follows:
(2) For high-viscosity liquids not shown in the figure, 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 figure (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 sales office or nearest representative.
󱾀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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※1: Please consult OVAL sales office or nearest representative when it exceeds the maximum transmission distance.
Working temperature range of dedicated cables (PVC: model CBP2) is between - 15℃and +80℃.
When using in an environment exceeding this temperature range, please use dedicated cables(Teflon: model
CBT2).
※2: Type S stainless-steel tube type does not comply with the density output.
Volume output uses fixed density compensation.
3.2 Transmitter general specifications
Item Description
Transmitter model PA5K
Connected detector Coriolis flowmeter ALTImass series detector
Power supply
AC-powered: AC 100V to 240V 50/60Hz (Allowable voltage range: AC 85V to 264V)
DC-powered: DC 20V to 30V (Recommended DC power supply capacity: 24VDC, 1A or over)
Power consumption Max 21VA, 7W
Ambient temperature －20 to +50℃
Transmission distance (※1)
Type U: Max 200m (Max 100m for CA00A and CA001)
Type S: Max 100m (Titanium), Max 50m (Stainless steel)
Type B: Max 50m
(All of these types are connected with dedicated 9-core cables.)
Dust-water-proof structure IP20
Mounting structure Rack mounting type (installation in a non-dangerous place)
Transmitter structure Case material: steel plate
Coating color : black
Weight 0.8kg
Display / Operation LED for operation status display: 2 (red and green), zero adjustment button
Communication type
HART communication
(standard type)
Superimposed to the HART 7 Analog
Output 1
Modbus communication
type
RS-485 Modbus protocol
※Analog output cannot be used with the
Modbus communication type.
Analog output
2 systems
4-20mA, load resistance 600 Ωor less (250Ωor over when using the HART
communication
Select from mass flowrate, volume flowrate, temperature, density or drive gain
current output. ( ※2)
Pulse output
1 system, maximum frequency: 11,000Hz, pulse width duty 50%
Open drain output (equivalent to open collector output) [Max 30V, 50mA]; or
Voltage pulse “Low Level”: 1.5V or less, “High Level”: 13V or over
Output impedance: 2.2k Ω
Status input/
Status output
Select one point from Status input / Status output.
Input
Contact point input (input at the contact point a)
Close: 200 Ω or less, Open: 100k Ω or over
Select from Integrated value reset, Zero adjustment or Fix to
output 0%.
Output
Open drain output (equivalent to open collector output)
[Max 30V, 50mA]
Select from Error (standard), Inflow direction, Zero
adjustment in progress, High/Low alarm, or Without
function.
Explosion-proof
specification /
Applicable guidelines
Refer to P.11 for details of TIIS and IECEx (we are currently preparing
for ATEX).
Applicable standards
EMC EN 61326-1
Product safety EN 61010-1 (Overvoltage Category: II, Pollution degree:
2, Installation altitude: 2000m or below)
NOTES

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4. PART NAMES AND OUTLINE DIMENSIONS
Fig. 4.1
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
(Figure shows rupture disk implementation option)
Recommended joint: Swagelok tube joint
Model: SS-810-1-4RT (Male 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
●Sensor
Unit:mm
Fig. 4.2
●
Transmitter
Min.50
2-φ7/1 台 ラック ラック
144
160±0.5
48
44
178
160
145.2
φ4.5
135
165
121.2
3.8
Unit:mm

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5. INSTALLATION
5.1 Installation Guidelines
(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 necessary.)
(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 Installation Guidelines
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, connection 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
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 Filled with Process Liquid
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 Loop
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 Processing diagram on female side of high-pressure cone and thread connection (example)
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

L-770HP-1-E
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3. Installation of converter (PA5K) / procedure of wiring
3.1 Procedure of installation
(1) Select a place where there is few mechanical vibration and corrosive gas.
(2) Select a place where there the humidity is low and the temperature is almost ordinary temperature.
(3) To install more than one converter under an environment where the ambient temperature of converter
exceeds 40°C, the attachment pitch should be 60mm or more.
(4) Install the product at a place where you can carry out the maintenance easily.
(5) Attach the converter with the attachment dimensions
Fig.3.1 Converter external dimensions diagram
Min 50
2-?7 /1 unit Rack Rack
144
160±0.5
48
44
178
160
145.2
?4.5
135
165
121.2
3.8
Unit: mm
*
*Installationpitchbetween2rackmount
transmittersshallbemorethan60mmfor
environmentwhereambienttemperature
exceeds40degC.
5.8 Transmitter Installation
(1) Locate the meter sufficiently away from mechanical vibration or from corrosive gas atmosphere.
(2) Locate the meter where humidity is low and where temperature is as moderate as possible.
(3) Installation pitch between 2 rackmount transmitters shall be more than 60mm for environment
where ambient temperature exceeds 40degC.
(4) Install in a location easy to access for inspection and maintenance.
(5) Install the transmitter with the dimensions shown in the figure below.
Fig.5.9
Unit: mm

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6. WIRING INSTRUCTIONS
6.1 Terminal Box Cover Removal
Cable entrance of the transmitter is located on the
bot tom of the sensor unit. Remove the cover for
respective wiring connections.
(1) Using a flat tool, loosen the terminal box cover by
slowly turning it clockwise and hand rotate it further
until it comes off.
(2) Removing the cover provides access to the
terminal block.
(3) Reverse step of (1) shall be taken for re-tightening
the cover.
CAUTION:
Internal wiring could break if physical orientation
of terminal box is changed with rough handling.
If you desire to change the physical orientation,
consult OVAL sales office or nearest representative
in advance.
Fig. 6.1
Terminal Box
Terminal Cover
A Flat Tool (that will not
scratch the painting)
Turn

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Terminals for wiring connections are found at the front of transmitter housing. Remove the front cover
using below procedure.
6.2 Wiring Procedure
Fig.6.2
Fig.6.3
WARNING: Be sure to turn off power before opening the terminal box.
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3.2 Procedure of wiring
Converter and sensor unit are connected with a dedicated cable. The maximum length of dedicated cable
varies depending on the type of sensor unit.
■How to remove the front cover of converter
The wiring connection terminal of converter exists on the front surface of case. Remove the front cover of
converter following the procedure shown below.
WARNING:
Be sure to turn OFF the power supply before wiring.
(1) Loosen the screw (M3)
(The cover can be removed by loosening
the screw without unscrewing completely)
(2) Slide the cover upward.
(As the cover is fixed by 2 tabs, slide the cover
upward putting additional force)
(3) Remove by lifting the cover.
The cable should have 100 to 150mm of marginal cable length secured at the position shown below
so that the internal device can be pulled out from the case while connected.
(2)
(1)
(3)
M3 screw
Cover
Tab
Slide the cover
upward
Lift to remove
the forward
Sensor cable
Power cable
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3.2 Procedure of wiring
Converter and sensor unit are connected with a dedicated cable. The maximum length of dedicated cable
varies depending on the type of sensor unit.
■How to remove the front cover of converter
The wiring connection terminal of converter exists on the front surface of case. Remove the front cover of
converter following the procedure shown below.
WARNING:
Be sure to turn OFF the power supply before wiring.
(1) Loosen the screw (M3)
(The cover can be removed by loosening
the screw without unscrewing completely)
(2) Slide the cover upward.
(As the cover is fixed by 2 tabs, slide the cover
upward putting additional force)
(3) Remove by lifting the cover.
The cable should have 100 to 150mm of marginal cable length secured at the position shown below
so that the internal device can be pulled out from the case while connected.
(2)
(1)
(3)
M3 screw
Cover
Tab
Slide the cover
upward
Lift to remove
the forward
Sensor cable
Power cable

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[Connection terminal diagram]
Fig.3.4
I S CONNECTION
SHIELD
Lï 'ïGRïR＋D＋
L＋
TA Tb TB
Sensor connection terminal
I/O signal connection terminal
Power supply connection terminal
Grounding terminal
ANALOG1
ANALOG2
STATUS I/0
AC100-240V
PULSE
＋ï
＋ï
＋ï
＋ï
12
34
56
7 8
N L
Fig.6.4

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6.3 Connections Between Transmitter and Sensor Unit
Dedicated cables are used to connect the transmitter and the sensor unit. The maximum length of
dedicated cables varies according to the sensor unit type.
PVC and Teflon material cables are available for the dedicated cables. Please make sure to use the Teflon
material cables when using in an environment where the cable temperature can exceed the range of -15℃
and +80℃.
Fig.6.5
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[Transmitter sensor connection terminal]
Terminal Color Description
D+ Brown
Flow tube drive output
D−Red
G Black Connect cable shield
TB Orange
Temperature sensor input
Tb Yellow
L+ Green Left pick off signal input
R+ Blue Right pick off signal input
TA Purple Temperature sensor input
R−Gray Right pick off signal input
L−White Left pick off signal input
Specifications Polarity Description
Specifications of AC
power supply
L
AC 100V to 240V 50/60Hz (allowable voltage range: AC 85V to 264V)
N
Specifications of DC
power supply
+DC 20V to 30V (for the capacity of supplied power with DC
specifications, 24VDC, 1A or more is recommended)
−
[Power supply connection terminal]
Specifications Description
Common D class grounding (protection grounding terminal)
[Grounding terminal]
Connect the wiring for supplying power to power supply connection terminals L and N (in case of DC
CAUTION:
The supply voltage should be within the range indicated on the product name plate which is attached
to the chassis.
Dedicatedcable
Sensorunitterminalbox
Powersupply
Output