CAT.No.CBB115E-3

High Accuracy, Versatile
Positive Displacement Flowmeter

ULTRA OVAL Type SULTRA OVAL with established reputation for
accuracy and durability took a step forward again!

●Bar graph display enables intuitive confirmation of instantaneous flowrate!
●Easily viewable, large unit display!
●High-sensitivity touch sensor has been adopted! Operable with your gloves on,even in the rain!
●Predicts aging deterioration of the flowmeter body and notifies themaintenance timing!
●Detects disconnection of sensor wire and notifies sensor failure!

“Actual measurement type” with high reliability and high accuracy[Measurement principle of OVAL flowmeter]
OVAL flowmeter consists of a body and a pair of oval
shapedgears.

Volumetricflow

measurement

isachieved by repeated measurement using a "measuring

Oval gearcup" and counting the continuous scoop of liquid one

One cup, two cups,
three cups…

cup, two cups, three cups...
OVAL flowmeter is called as "Actual measurement type",
since it does not "estimate" flowrates by detecting aphysical phenomenon having correlation with flow, but
actually measures flowrates using a "measuring cup".

“Measuring cup”

Actual measurement
using a“measuring cup”
Rotation speed of gear =Volumetric flowrate

ULTRA OVAL uses oval gears at the heart of technology
with established reputation for high accuracy anddurability. 17 sizes are lined up to cover minute to large
flowranges.
Flowmeter Body

MODE switch

The body and rotors are made of stainlesssteel (types 39-57). Special carbon has
been adopted for the bushings
as a standard.

Display modes changed bytouch operation.

RESET switch
Clears totalized values
in the resettable total
display mode.

FlangeFlange connections are JIS,ASME or JPI types.

Rotor
Oval gears with an established reputation enablemeasurement with high accuracy.

RegisterMade of robust die-cast aluminumin conformity with the explosionproof
and pressure-tight standards.

Enlarged display! Easily viewable!

(Old model)(New model)

Various functions added to make easier operations.
Newly developed
touch switch

Various alarms with
self-diagnosis function

Easy operation with gloves on!

Estimates wear status
Alarm in the event ofof body and announces
sensor wire disconnection
maintenance timing.

Operation Lock function and its release method / Example of LCD● When a non-operation state continues for over a minute, the “operation lock” works to prevent erroneous operation.
● Operation Lock is released by sliding your finger slowly from the MODE side to theRESET side as shown with the arrow in the figure below.

(4) Display of resettable total
When C is displayed on the left corner of the LCD, it indicates that it is in the Resettable Total
Mode. When you touch “RESET” with your finger, the totalized value is reset and theaccumulation starts from zero. However, the cumulative total values are stored independently
during this mode. The figure shows that the total flowrate is 45,678 L.

(1) Display of cumulative
totalThe figure shows that the cumulative
total value is 12,345,678 L.

(2) Display of instantaneous
flowrate (b1)(3) Display of instantaneous flowrate (b2)When b2 is displayed on the left corner of the LCD, it
indicates the flowrate per minute.
The figure shows that the flowrate per minute is 20.00 L/min.

When b1 is displayed on the left corner of theLCD, it indicates the flowrate per hour.
The figure shows that the flowrate per hour is
1,200 L/h.

Connection with receiver
ULTRA OVAL Type S is available in the following types: a battery type (without output) that requires no external power supply
and an external power supply type (with pulse output and analog output).
ReceiverULTRA OVAL Type S

External
power supply

Pulse
BATCH COUNTER(EL1812)

Analog (4-20mA)

RecorderTOTALIZER(EL0122, EL0123)

PULSE
DISTRIBUTOR(SU1508)

Other
instruments

Specifications of main body
Item
Capacity type

Nominaldiameter(mm)

39415253555657

Body2025±0.35% or ±0.15%
of reading4050

1to 60L/h

5

to 420L/h

0.03 to20.08 to3.80.15 to

6.4

0.26 to14

0.6 to24

1.2 to44

2850

2to50

2980

4

to90

60

100

5

to150

10

to230

3132
33
34
65

100
150
150
200

±0.35% or ±0.15%
of reading

150
200
250
300300※1. Linearity ±0.35%, at 5mPa•s or higher.
※2. Different by a flange standard.

15

to32020

to450

30

to700

50

to 1000

Rotor

Bushing

Connection

Max operatingpressure ※2Special carbon

0.2 to 12L/h104550

Material

Flow range(m3/h) ※1

Linearity

Stainlesssteel

Stainlesssteel

Operating temp. range

Standard:−10 to +120°C
Special carbon•Ceramics

JIS or
ASME/JPI
Flange type

2.94MPa

Low temp.:−60 to +60°C
Standard:−10 to +120°C
High temp. or jacket:
120 to 260°C

Integral type:
Stainlesssteel

Integral type:
Integral type:
Carbon • Ceramics
Stainless
Separated type: Carbon
steel

Separatedtype:
Cast iron•Cast steel

Separatedtype:
Cast iron•
Stainlesssteel

Cast steel

Cast iron•
Stainlesssteel

Integral type:
1.96MPa
JIS or
ASME/JPIFlange typeSeparatedtype:
9.51MPa

CarbonIntegral type
−10 to +120°C
Separated type
Standard:−5 to +120°C
High temp. or jacket:
120 to 200°C

4.51MPa
1.96MPa

Standard Specifications
Description

Item

LCD

Power supply Output specifications(1) Cumulative total: 8 digits(2) Instantaneous flowrate per hour: 5 digits(3) Instantaneous flowrate per min.: 5 digits(4) Resettable total: 7 digits• Flowrate display: 7 segments and 8 digits
Unit display: 16 segments × 3 digits
Battery mark display
Flow indicator (in 10 divisions)
Information mark display
Color of background: Orange
Without output

Local indication only

Current analog output

4-20mADC

Current pulse output

Factored or unfactored OFF: 4mA / ON: 20mA

Open collector pulse output

Factored or unfactored ON voltage: 1.5V DC or less

Voltage pulse output

Factored or unfactored OFF: 1V or less / ON: 7V or more

Without output

Built-in lithium battery. Battery life: Approximately 8 years
External power supply: 12-45V DC
Consumption current: Maximum 30mA
Built-in lithium battery. Battery life:
Approximately a year (The battery is not consumed when power is supplied by the external power supply.)With output

Ambient temperature−20 to +60 °C (free from dew condensation)

Explosionproof configuration

Flameproof configuration: JPEx explosionproof (Japanese explosionproof certificate),
ATEX, NEPSI, KCs, CSA, ITRI

Protection class of container

IP66

Forward/reverse detection function

Included (When reverse flow subtraction function is chosen)

Mode switching, reset operation

Touch sensor (Direct operation using fingers.)

Related products developed according to applications
Smart type register● More advanced process operation has been achieved with “communication”!
With the smart type register, not only indication of measurement information but also reading
out, setting and self-diagnosis of various parameters including instantaneous flowrates, spans
and meter coefficients can be performed in a control room away from the field using the smart
communication unit (EL2310), while at the same time facilitating maintenance. Furthermore, byutilizing the optional multi-drop function, a maximum of 15 transmitters can be connected to ahost computer using two-wire cable, which minimizes wiring.

Total or instantaneous flowrates(0-100% or actual flow) arelocally displayed.

EL2310Smart communication unit
Laptop computer

ULTRA register with batch control function● Highest-grade positive displacement flowmeter “ULTRAOVAL” comes with a batch control function. Combination
with an automatic ON/OFF valve enables simplified
construction of a high-performance field-type batch system.
● Fully pneumatic(Batch counter is powered by built-in battery.)● Depending on your application, you can select one-stage
opening/closing valve (LW74E) or two-stage opening/closing valve (LW76E) which enables accurate batchoperation.

ULTRA register with automatic temperaturecorrection function● Automatically converts into volumetric rate of flow
with a reference temperature!
This ULTRA register can be used for applications that
require flowrate measurement at a prescribedreference temperature, for example, in the case of
petroleum trading, having a function to convert into aflowrate at a reference temperature. Available to alltypes of ULTRA OVAL.

Valve controlsystem

LW74E

LW76E

Pneumatic one-stage
opening andone-stage closing

Pneumatic two-stage opening
and two-stage closing(Through setting, it can bechanged to one-stage opening.)

Setting method

Push button type (LCD counter: 6 digits)
Accumulated
LCD counter: 8 digitsvalue(cumulative value)

Alarm

Battery capacity drop, excessive batch,
non-arrival of pulse (LCD)

BackupTotal values, set values, etc. (Stored in EEPROM)
Intrinsically safe explosionproof (Exia IIB T3) andwater-jet proof (IP65) configurations

Configuration
Ambient
temperature−10 to +60 °C

Power supply

Dedicated lithium battery(Battery life: Approximately 4 years. However, it differs
depending on use conditions.)

ApplicableULTRA OVAL Types 39 to 65
flowmeter
Temperature input Platinum resistor (Pt 100Ω)Temperature range −10 to +150 °C
for correction
Display
8-digit LCD
Two output types can be selected from various
Outputpulse signals and analog signals
JIS K 2249 standards, JIS K 2240 standards,
Calculation
3α correction
Conversion
Within ±0.1%
accuracy(Note 1) Bluetooth® word mark and logo are registered trademarks owned by Bluetooth SIG, Inc. OVAL Corporation uses these mark and logo under license fromBluetooth SIG, Inc. Other trademarks and registered trademarks are those of their respective owners.
• The specification as of April, 2023 is stated in this catalog. Specifications and design are subject to change without notice.
• All content of this catalog is copyrighted by OVAL Corporation. Any reproduction, partial or whole, of the content without permission from OVAL is strictly prohibited.

3-10-8 Kamiochiai, Shinjuku-ku, Tokyo 161-8508
Phone: +81 3-3360-5121 FAX: +81 3-3365-8605

https://www.oval.co.jp/english
2007 2304 2007S