YOKOGAWA US300FM User Manual

User’s
Manual

US300FM
Ultrasonic Flowmeter

Manual Change

No. 15-010-E

This is the supplement for the original manual (No. IM 01G05B03-01E, 1st Edition) regarding the added and changed
items. Please also refer to this supplement when you read the manual.

Addition to the section “3.5.4 Connection of the Transducers” (page 18) :

(1) Cable Finish

The cable finish should be done as the drawings (a) and (b)
shown in the right.

(2) Cable Gland

When tightening the gland, not only pull back the cable shield
(meshed part) but also roll it out into a ring-shaped form and let
it be pushed by the compression part (grey-colored plastic) so
that the cable shield will have electrical contact with the gland
body. Also, be sure to align the convexity part outside the
compression part and the concavity part inside the gland body.
Refer to the drawings below.

Cable shield rolled out into a ring-shaped form

Compression part
(convexity part outside)

Components of the cable gland

Gland body
(concavity part inside)

(a) Main unit side

Perform
soldering

7±2

13±3

White White

60±5

12±2

Cable
shield

(meshed)

(*) Finish the brown cables as well as white cables.
(**) You do not connect the thin lines to any terminals.

Gland body

Cap nut

Rubber ring

Compression

part

Cutaway view of the cable gland

Unit : mm

Shield line

Brown (*)

Less
than

10mm

Thin lines

Outer skin of the cable

Cable shield
(ringed-shape)

Signal lines

(b) Junction box side

52±5

Cable
shield

(**)

(meshed)

Outer wall of
the main unit
or junction box

Perform
soldering

7±2

Shield line

10±3

12±2

(3) Grounding

The connection of the cable shield will be realized as shown in the drawing below after going through the
procedures (1) and (2) in the above. Connect the main unit to the ground through the terminal “PE” of the power
supply terminals in the main unit. The grounding resistance should be less than 100 ohm.

Transducers

Sensors

Junction box

Connection

cable

Main

unit

Grounding resistance
less than 100 ohm

GND

Connection of the cable shield

(4) Connecting the Sensor ROMs

Connect the sensor ROMs to the corresponding terminals in the main unit when connecting transducers. The
sensor ROMs are packed and affixed to the transducers when shipped from the factory.

Brown (*)

Less
than
5mm

Thin lines

(**)

Manual Change for IM 01G05B03-01E 1st Edition : No.15-010-E July 30 2015-00

Yokogawa Electric Corporation

Changes to the section “3.1 Scope of Delivery” (page 11) :

Change the figure of a nameplate to as below.

Addition to the section “3.1 Scope of Delivery” (page 11) :

When ordering a couplant weatherproof type (by couplant code “R” in the transducer specification or model code
USPA097), a package of “Shin-Etsu Silicone, 1 COMPONENT RTV (KE45T)” is delivered.

Addition to the section “3.3 General Precautions” (page 12) :

・Do not disassemble or remodel.

Addition to the section “3.5.1 Location” (page 13) :

Attention!

The instrument must not be installed in a corrosive atmosphere.

Attention!

Use Submersible(IP68) type transducers when they are installed where condensation
occurs. A Tokuchu request is necessary for Submersible type. However the diameter
must be over 100 mm.

Changes to the section “3.5.5 Connection to the Power Supply” (page 20) :

(1) Terminal Block (page 19)

The outer shapes of the terminal block for
power supply connection, the printed
terminal names, and the design on the
board below the terminal block have been
changed as the drawing in the right.

(2) Terminal Assignment (page 21)

Regarding the terminal assignment, the
terminal names were revised as below
from the original manual. The needed
power supply is given in the nameplate on
the housing, not in the plate below the
terminal block.

N(-)PE L(+)

KL3

The terminal names are the
same both for AC and DC
power supply.

This can be used as the
earth terminal instead of
the terminal “PE”.

AC power supply DC power supply

Terminal Connection Terminal Connection
PE Earth PE (Earth)
N(-) Neutral N(-) - DC
L(+) Phase 100...230 V AC±10% L(+) + DC 24V DC±10%

Manual Change for IM 01G05B03-01E 1st Edition : No.15-010-E July 30 2015-00

Addition to the section “3.5.5 Connection to the Power Supply” (page 20) :

Install an external switch or circuit breaker as a means to turn the power off (capacitance; 15A, conforming to
IEC947-1 and IEC947-3). Locate this switch either near the instrument or in other places facilitating easy
operation. Affix a “Power Off Equipment” label to this external switch or circuit breaker.

Changes to the section “3.6 Sensor ROM” (page 22) :

The sensor ROMs are packed and affixed to the transducers when shipped from the factory, not inserted to the
terminals in the main unit. They shall be connected to the corresponding terminals in the main unit when
installation.

Addition to the section “3.7 Replacement of the Fuse” (page 22) :

Be sure to use the fuse which satisfies the specification below.

Components may otherwise be damaged.

Changes to the section “3.7 Replacement of the Fuse” (page 22) :

Change the fuse specification “250V 1.25A, delayed action Type T” to as below.

“250V 1A delay type” for AC power supply
“250V 1.6A delay type” for DC power supply

Addition to the chapter “4. Getting Started” (page 23) :

Attention!

The current outputs may temporarily turn unstable during the power-on sequence
(including re-starting after power failure) and parameter display / setting mode. Take care
of your process not to be affected by this behavior.

Addition and deletion to the section “4.1.1 Key Operations” (page 23) and related pages :

Refer to the following table for the function of corresponding key operations.
The correct explanations for these key operations in the related pages are also as the table be low.

Related pages: “4.1.1 Interruption of Power Supply” (page 27)
“15.2 US300FM doesn’t react anymore” (page 106)

LIGHT

Switches the background lighting ON/OFF.

BRK

INIT

RESET

ENTER

[Operation when powering the instrument on]

[Operation during the measurement or menu display]
RESET: Press these three keys simultaneously to recover from an error. This

has the same effect as restarting the unit. Data will not be affected.

INIT (cold start): Press these three keys simultaneously and release ENTER

first. After acknowledging the display of main menu, release (i) BRK key
first and then (ii) C key. This will initialize the instrument. Most
parameters and settings are reset to the factory default values. The
memory will not be cleared.
Note that when the data logging function is activated, the DELETE
MEAS.VAL. display will appear instead of main menu. In this case, after
releasing (i) BRK key first and then (ii) C key, select NO or YES and then
press ENTER to finish the procedure.

BRK

INIT

INIT (coldstart): Pressing these two keys simultaneously and after acknowledging the

display of main menu, release (i) BRK first and then (ii) C. This will initialize the
instrument. Most parameters and settings are reset to the factory default values.
The same procedure is required as above when the DELETE MEAS.VAL. display
appears.

Manual Change for IM 01G05B03-01E 1st Edition : No.15-010-E July 30 2015-00

Addition to the section “4.4.1 Interruption of Power Supply” (page 27) :

Attention!

The current outputs may temporarily turn unstable during the power-on sequence after
power failure. Take care of your process not to be affected by this behavior.

Addition to the chapter “5. Basic Measurement” (page 29) :

Note!

When changing any settings in "PARAMETER" program branch, be sure to also go
through "MEASURING" program branch to the end where the meas urement will start. In
this case, you do not always have to fix the transducers on to the pi pe, and thus you do
not always need to get the actual flow measurement.

If you shut off the power supply without taking this procedure, the settings to be c hang ed
would not be effective and keep the same settings as before.

Addition to the section “5.4 Selection of the Sound Path Factor” (page 34) :

When the pipe outer diameter is more than 600mm, the sound path factor as “1” (one) is recommended.
Otherwise, the measurement may become unstable when flow velocity or fluid temperature changed.

Addition to the section “5.5.2 Mounting of the Transducers” (page 35) :

The pipe wall thickness may slightly vary from part to part. Check it in advance by applying a wall thickness probe
or some other ways and avoid mounting the transducers on such parts.

Attention!

Instructions for using “Acoustic couplant weatherproof type” (Shin-Etsu Silicone, 1
COMPONENT RTV) are as below.

 The operating condition of ambient temperature

Before and during curing : 0 to +50°C / 32 to 122°F
After curing : -40 to +180°C / -40 to 356°F

 When applying this couplant, cut the tip of attached nozzle to appropriate length and

set it to the tube container. Also, remove matters like dust or oil on the surface to be
applied. Otherwise, its adhesion force may become lower.

 When curing this couplant, keep the ambient and installation position temperature

between 0 to +50°C (32 to 122°F). If not, the flow measurement may fail because of
air bubbles formed inside the rubber before curing, etc.

 It usually takes one to three days for complete curing depending on the conditions.

Addition to the section “5.5.2.2 Mounting with Fixtures and Chains” (page 36) :

Attention!

When using mounting fixtures, there may arise some air gap between the transducer
surface and pipe wall because of any distortion of the pipe wall. Make sure to avoid
having such air gap between them.

Addition to the section “6.1 Selection of the Physical Quantity and of the Unit of Measurement” (page 39) :

Attention!

In case of mass flow, select “Other Medium” as a measured fluid. When “ Other Medium”
has been selected, US300FM requests to enter the density which is us ed to calculate
mass flow.

Manual Change for IM 01G05B03-01E 1st Edition : No.15-010-E July 30 2015-00

Changes to the section “7.2 Flow Totalizers” (page 43) :

Two of the key operations have been changed as below, requiring press ing the keys “three times” .

To reset the two flow totalizers to zero:

Press key

O

ON

three times when a totalizer is displayed.

To deactivate flow totalizing:

O

Press key

OFF

three times when a totalizer is displayed.

Addition to the section “14.5 Activation of a Pulse Output” (page 95) :

Maximum pulse output rate is 2 pulse per second (+/-20%).

Set the “Pulse Value” and the “Pulse Width” so that the actual maximum flow in the pipe is less than half
the displayed value (“Max – Value”).
Example:

3

The actual maximum flow 120m
Pulse Value = 0.02m

/h

3

Pulse Width = 150ms

INFO: Max – Value

3

240.0m

/h

Attention!

It is necessary to activate flow totalizers by pressing key
output. Refer to the section 7.2 (page 43) for flow totalizers.

Changes to the chapter “A Standard Specification” (page 109 to 116) :
Please use the following sheets for this chapter.

O

ON

to get the actual pulse

Manual Change for IM 01G05B03-01E 1st Edition : No.15-010-E July 30 2015-00

Standard Specifications

A Standard Specifications

US300FM

 General

Fluid:

Liquid (Turbidity < 10,000 mg/L, Sound velocity 800 to
3,500 m/s, Temperature –30 to +200°C / –22 to +392°F)

Measured Quantities:

Volume flow, mass flow (by setting density), flow
velocity, sound velocity in the fluid

Measuring Principal:

Transit time method using ultrasonic signal

Pipe Sizes:

25 to 6,500 mm (1 to 255 inches) (covered by three
types of transducers)

Pipe and Lining Materials:

Carbon steel, Stainless steel, Grey cast iron, Ductile
iron, Copper, Glass, PVC, etc.

Flow Velocity Range:

±0.01 to ±25 m/s (±0.033 to ±82 ft/s)

Resolution:

0.025 cm/s (0.01 in/s)

Repeatability:

0.15% of reading ±0.01 m/s (0.033 ft/s)

Accuracy:

(Note) Under fully developed rotationally symmetrical flow

profile

Volumetric flow:

±1 to 3% of reading ±0.01 m/s (0.033 ft/s)
depending on pipe geometry and accuracy
of entered pipe dimensions.

Flow velocity:

±0.5% of reading ±0.01 m/s (0.033 ft/s)
over sonic path

Measuring Cycle:

100 to 1000 Hz (per one channel)

Straight Pipe Run in the Upstream:

10 to 50 pipe diameters, depending on the kind of flow
disturbances

 Ultrasonic Flowmeter, Main Unit

Housing Material:

Aluminum

Painting:

Front cover:

Deep sea moss green, Polyuretane and
acrylic resin corrosion-resistance
waterbased coating

Back cover:

Agate grey, Polyester resin corrosion­resistance powder coating

Degrees of Protection:

 IP65 (EN60529)

Mounting Method:

 Wall mounting
 Pipe mounting fixture (for 2-inch pipe, optional)

Measuring Input :

One or two (dual) (Channel A, Channel B).

Current Output:

 One or two
 Range 4 to 20 mA (Load resistance 0 to 500 Ω)

Note: The current outputs may temporarily turn unstable

during the power-on sequence (including restarting
after power failure) and parameter display / setting
mode. Take care of your process not to be affected
by this behavior.

Frequency Output:

 None (standard), or one (optional)
 Range 0 to 1 kHz
 Contact type: Open-collector, 24 V / 4 mA

Binary Output:

 None (standard), one, or two (optional)
 Contact type: Open-collector, 24 V / 4 mA

Input / Output Terminal Configuration:

Screw-type pillar terminals

LCD Display:

2 line x 16 character LCD display with backlight.
Configurable to display two measured values (e.g., flow
rate and total flow) simultaneously, or to display values
from optional dual input channels alternately.

Keyboard:

15 keys (numerical, functional, or both) including four
arrow-shaped keys for cursor operation, enabling easy
access through its interactive menu structure.

Display Language:

Czech, Danish, Dutch, English (default), French,
German, Norwegian, Polish, Turkey

Flow Measurement:

Flow velocity, Volume flow, Mass flow

Sound Velocity / Signal Amplitude Measurement (On­line):

Sound velocity and signal amplitude in the fluid
available on-line simultaneously with flow measurement.

Totalization Function:

Totalizes the volume flow or mass flow. Ten-digit
number for both forward/reverse directions of each
channel.

Damping Function:

Time constant 0 to 100 seconds, moving average.

Sound Velocity Measurement (Off-line):

Measures the sound velocity of unknown fluid starting
from its estimated sound velocity. The result can be
transferred to the current fluid parameter.

IM 01G05B03-01E 1st Edition 1

Standard Specifications

Arithmetic Operation on Optional Dual-Channel /
Dual-Path Inputs:

Arithmetic operations get the outcomes for calculation
channel Y and Z by taking sum, average, or difference
of two flow values from input channel A and B. Taking
absolute values of each input independently in the
calculation is also possible.

Note: Two sets of transducers are necessary.

Pulse Output (optional):

Available via optional binary outputs.

 Pulse value: 0.01 to 1000 of totalization unit
 Pulse width: 100 to 1000 ms (±20%)
 Maximum output rate: 2pps (pulse/second) ±20%

Alarm Output (optional):

Available via optional binary outputs where each alarm
item is assigned one-to-one. Alarm properties are also
selectable for each alarm one-by-one.

 Alarm items: High limit, Low limit, Flow direction

change, Quantity limit (for batch operation), and Error
(measurement impossible)

 Alarm properties: Normal open / Normal close, Non-

hold / Hold (at the alarm detection)

Output Signal Configuration:

Freely configurable including independent dual flow
value outputs.

 Current / frequency outputs: Flow velocity, Volume

flow, Mass flow, Sound velocity, or Signal amplitude

 Binary outputs: Pulse or Alarm

Data Logging Function:

Data storage capacity of 27,000 values.
Storage rate is selectable from 1 s, 10 s, 1 min, 10 min,
30 min, 1h, or any other rate between 1 s to 43200 s
(12 h) by the second. For each period of measurement,
stored values are grouped by a user-defined measuring
point name.
Stored values can be transferred to a personal
computer via RS232 serial communication port.

(Note) As the RS232 port is on the front panel inside

housing, use this function only for test / service /
maintenance purposes.

Communication Function:

Transfers the measured values to a personal computer
or a serial printer. Both on-line/off-line transfer
during/after the measurement available.

 Output item: Flow value (flow velocity, volume flow,

or mass flow), Totalization (forward, reverse), Sound
velocity, Signal amplitude

 Output format setting: Spacing (for printer), Decimal

point character, Data delimiter

 Communication interface: RS232
 Communication port: D-sub 9-pin, male

(Note) As the RS232 port is on the front panel inside housing,

use this function only for test / service / maintenance
purposes.

Time-Programmable Measurement Function:

Automatic start / stop of the measurement without
human operation using internal clock for specific
systems. Can be used with current output, binary output,
data logging function, and/or communication function
for recording the measurement.

Site Parameters Storage Function:

Eliminates the necessity of re-entering parameters for
additional measurement on a site.
Totally 80 sets of site parameters for pipe/fluid settings
are available with user-defined site names.

Material / Fluid List Customization Function:

The lists of material / fluid in the parameter menu are
editable. Unnecessary items can be cut off from the
menu for user’s convenience. Registration of new
material / fluid data is also possible totally up to 13
items with user-defined names.

Power Supply:

Power supply voltage:

100 to 230 VAC ±10% (50/60 Hz ±5% ) or
24 VDC ±10%

Power consumption: Less than 15 W

Safety and EMC Standard:

General safety: EN61010-1:2010
EN61010-2-030:2010

 Altitude at installation site:

Max. 2000 m above sea level

 Overvoltage category:

Overvoltage category II

 Pollution degree:

Pollution degree 2

EMC regulation: EN61326-1:2006

Operating Conditions:

Ambient temperature: –10 to +60°C (14 to 140°F)
Ambient humidity: 0 to 95% RH or less (Non-condensation)

Note: Lengthy operation at 80% or more is not

recommended.

 Transducers

Basic Construction:

A set of transducers are composed of a pair of sensor
elements (often called just as “transducers”), and
transducer cables with a junction box at one end, which
is to be connected to US300FM main unit by dedicated
connection cable US300FC.
The transducer cables are armed with stainless steel
flexible tube.

(Note) Fixing hardware (fixing strap, clips, etc.) and acoustic

couplant are usually included in a set of transduces,
specified in its model code by their kinds or
with/without.

Material:

Case of sensor elements:

Stainless steel EN/DIN 1.4571 (JIS SUS
316Ti, AISI 316Ti SS equivalent)

Sensing surface of sensor elements:

General temperature type: PEEK (Poly
Ether Ether Keton)
High temperature type: Polyimid

Degrees of Protection:

General type: IP65 (EN60529)
Immersible type: IP67 (EN60529)

Applicable Pipe Sizes (inner diameter):

Medium type: 25 to 400 mm (1 to 16 inches)
Lager type: 100 to 2,500 mm (4 to 98 inches)
Very large type: 2,000 to 6,500 mm (78 to 255 inches)

(Note) Only “6,500 mm” above is the size for outer diameter.

2 IM 01G05B03-01E 1st Edition

Standard Specifications

Fluid Temperature Range:

General temperature type:

–30 to +130°C (–22 to +266°F)

High temperature type:

–30 to +200°C (–22 to +392°F)

Note: Pay attention also to temperature specification of the

couplant you choose.

 Connection Cable

Connection cable is always necessary to connect the
transducers (junction box) and the US300FM main unit.
The length is specifiable from 1 m (3 ft) to 300 m (984 ft)
by the meter.

 Accessories

Fixing Hardware, Couplant, etc:

Specified in the suffix code of US300FM/US300FT.
Model codes as accessories also available for
separate/additional orders (listed later).

 Data Transfer Software

General:

The software installed on a personal computer receives
one or more records of logging data and parameter sets
stored in US300FM main unit via RS232
communication port.
Data can be viewed or graphed on a PC monitor, or
exported as a text file.
This software works while US300FM is off-line (not
measuring flow) where current output goes down to
zero.

Function:

Displaying Parameter Record:

Display parameter record of selected measuring data
set.

Displaying Measured Data in Table:

Display measured data of selected measuring data
set in table format.

Displaying Data in Graph:

Display measured data of selected measuring data
set in graphic format. Marker type and color for each
line of values selectable. Scales for time-axis and
value-axis can be changed from default condition of
automatic scaling. Graph printing function embedded.

Displaying Statistical Data:

Display statistical data of the measurement. Total
data points, minimum, maximum, average and
standard deviation of the measured data can be
shown. Data range for statistical processing can be
designated if necessary.

Exporting Text File:

Parameter record and measured data can be
exported to a text file. Options for exporting items or
their formats are available.

Entering Remarks:

User’s remarks for each measured data can be
entered and edited in the transferred data file on a
personal computer. Remarks can be displayed in the
main window of the software.

Display Language:

English, German

(Note) Help is available only in English.

Operating Environment:

Personal Computer:

Microsoft
more RS232 port

Operating System:

Microsoft

Standard Accessories:

RS232 cable, RS232 adapter 9/25

* Microsoft

of Microsoft Corporation in the United States and/or
other countries.

®

Windows® hardware compatible, one or

®

Windows® 98, ME, NT, 2000, XP

®

and Windows® are registered trademarks

 Units of Measurement

Volume flow Flow velocity Mass flow Totalizers Sound velocity

m3/h m/s g/s m3 g m/s

m3/min inch/s t/h l kg

m3/s kg/h gal t

l/h kg/min

l/min

l/s

USgph

USgpm

USgps

bbl/d

bbl/h

bbl/m

1 gallon [US] = 3.78 l; 1 barrel = 42 gallons = 158.76 l

IM 01G05B03-01E 1st Edition 3

Volume Mass

 Model and Suffix Code

Standard Specifications

Ultrasonic flowmeter

Model Suffix code Specification

US300FM ····························· Ultrasonic flowmeter

Output

Power Supply

Input Channel

Electrical connection

Option

*1: Option /PU1 and /PU2 are exclusive.
*2: Option /FQ1 is not selectable for two current output (-A2)

-A1 ······················

-A2 ······················

models

1 ···················

4 ···················

-1 ················

-2 ················

-4 ···········

/PU1 ····

/PU2 ····

/FQ1 ····

/BGT ····

/SCT ····

/PMT ····

One current output

Two current outputs

100 to 230 V AC ±10%

24 V DC ±10%

One input channel
(one-path)

Two input channels
(dual-path)

ISO M20 x 1.5, female

One binary (pulse or alarm)
output (open-collector) (*1)

Two binary (pulse or alarm)
outputs (open-collector) (*1)

Frequency output (open­collector, 0 to 1 kHz) (*2)

Tag number on nameplate
(in the nameplate label,
maximum 16 characters)

Tag number on stainless
steel tag plate (maximum 16
characters)

Pipe mounting fixture

Connection cable (*8)

Model Suffix code Specification

US300FC ····················

Length

*8: Two sets of connection cables are necessary when

-Gxxx ·········

applying dual channel/path measurement.

Connection cable

xxx: Cable length 001 to 300 [m]

Data transfer software

Model Suffix code Specification

US300SA ····················

Language

-1 ················

00 ·······

Data transfer software (Windows
version) Including connecting kit
(RS232 cable for connection, RS232
adapter 9/25)

English / German version

Always 00

Transducers (*3)

Model Suffix code Specification

US300FT ··························

Usage (*4)

Pipe Size /
Fluid
Temperature
(*5)

Fixing band, strap
and clips (*6)

Acoustic couplant
(*7)

Option

*3: Two sets of transducers are necessary when applying dual

*4: A Tokuchu request is necessary when transducers are

*5: The alphabetic characters in the suffix code represent pipe

*6: When the pipe size is less than 50 mm (2 in.), select

-G ·····················

-W ····················

BG ················

BH ················

CG ················

CH ················

DG ················

-N ··············

B ············

C ············

D ············

N ············

G ·········

H ·········

R ·········

N ·········

/TTP ···

channel/path measurement.

installed where condensation occurs. However the pipe
size must be over 100 mm (Large type or Very large type).

sizes and fluid temperature ranges are below.
B: Medium type (25 to 400 mm / 1 to 16 in.)
C: Large type (100 to 2,500 mm / 4 to 98 in.)
D: Very large type (2,000 to 6,500 mm / 78 to 255 in.)
G: General temperature (–30 to +130°C / –22 to +266°F)
H: High temperature (–30 to +200°C / –22 to +392°F)

N(None) here first and order separately one each of
USPA053 mounting fixture short ruler type, USPA036
fixing chains (0.5 m/1.6 ft length), and USPA097 couplant
weatherproof type. It will avoid any stress that could be
caused by expansion of the pipe after installation. The
couplant weatherproof type can be specified by the code R
for couplant.

Transducers for fixed type

General purpose (IP65)

Waterproof (IP67)

Medium & General (with 3 m /

9.8 ft cable)

Medium & High (with 3 m / 9.8 ft
cable)

Large & General (with 4.4 m /

14.4 ft cable)

Large & High (with 4.4 m / 14.4
ft cable)

Very large & General (with 12 m /

39.4 ft cable)

Always N

For 25 to 1,400 mm (1 to 55 in.)

Two fixing bands
One strap of 10 m (32 ft)

length
Two clips of medium type
Two clips of large type

For 1,400 to 2,800 mm (55 to
110 in.)

One strap of 20 m (65 ft )
length

Two clips of large type

For 2,800 to 6,500 mm (110 to
255 in.)

Two straps of 20 m (65 ft)
length

Two clips of large type

None

General temperature type (non­adhesive, –30 to +130°C / –22
to +266°F)

High temperature type (non­adhesive, –30 to +200°C / –22
to +392°F)

Weatherproof type (adhesive,
–40 to +180°C / –40 to +356°F)

None

Transducer tag plate (maximum
16 characters)

4 IM 01G05B03-01E 1st Edition

Standard Specifications

*7: The couplant weatherproof type is recommended for

permanent installation in the outdoor, etc. It is adhesive
liquefied rubber and tight contacts between transducers
and pipe surface can be obtained by curing it. It usually
takes one to three days for complete curing depending on
the conditions. The operating condition of ambient
temperature is as below.
Before and during curing : 0 to +50°C / 32 to 122°F
After curing : –40 to +180°C / –40 to 356°F

Accessories (for ultrasonic flowmeter US300FM)

Model Description

USPA201

USPA221

USPA231

Pipe mounting fixture(to add the option
/PMT)

Blind plug for cable gland port

Cable gland

Accessories (others)

Model Description
USPA401

USPA402

USPA411

*9: Included in data transfer software US300SA as standard.

RS232 cable (*9)

RS232 adapter 9/25 (*9)

Measuring tape

Accessories (for transducers US300FT)

Model Description
USPA001

USPA002

USPA011

USPA012

USPA021

USPA032

USPA033

USPA034

USPA036

USPA037

USPA053

USPA054

USPA055

USPA057

Fixing strap (10 m / 32 ft length)

Fixing strap (20 m / 65 ft length)

Fixing clips
(medium type, for pipe size 40 to 100 mm / 1.5

to 4 in., set of two clips)

Fixing clips
(large type, for pipe size 100 to 6500 mm / 4 to

255 in., set of two clips)

Fixing bands
(only for pipe size 25 to 50 mm / 1 to 2 in.)

Fixing chains (set of two extensible chains)
(2 m / 6.5 ft length, equal to 600 mm / 23 in.

diameter)

Repair set for fixing chains

Retaining clips
(set of two clips, used with fixing chains)

Fixing chains (set of two extensible chains)
(0.5 m / 1.6 ft length, equal to 150 mm / 5.9 in.

diameter)

Fixing chains (set of two extensible chains)
(1 m / 3.2 ft length, equal to 300 mm / 11.8 in.

diameter)

Mounting fixture short ruler type (for
transducers medium pipe size type,
temperature range –30 to +200°C / –22 to
+392°F, set of two blocks with 120 mm / 4.7 in.
ruler)

Mounting fixture standard type (for transducers
medium pipe size type, temperature range –30
to +200°C / -22 to +392°F, set of two blocks
with 330 mm / 13 in. ruler)

Mounting fixture magnetic general temperature
type (for transducers medium pipe size type,
temperature range –30 to +100°C / –22 to
+212°F, set of two blocks with 330 mm / 13 in.
ruler)

Mounting fixture standard type (for transducers
large or very large pipe size type, temperature
range –30 to +200°C / –22 to +392°F, set of
two blocks with 330 mm / 13 in. ruler)

USPA058

USPA073

USPA075

USPA081

USPA082

USPA091

USPA092

USPA097

*10: The operating condition of ambient temperature is as

Mounting fixture magnetic general temperature
type (for transducers large or very large pipe
size type, temperature range –30 to +100°C /
–22 to +212°F, set of two blocks with 330 mm /
13 in. ruler)

Additional magnets for mounting fixture
magnetic general temperature type

(for transducers medium pipe size type,
temperature range –30 to +100°C / –22 to
+212°F, set of two magnets)

Additional magnets for mounting fixture
magnetic general temperature type

(for transducers large or very large pipe size
type, temperature range –30 to +100°C / –22 to
+212°F, set of two magnets)

Ruler for mounting fixture
(marked length 120 mm, equivalent to 4.7 in.)

Ruler for mounting fixture
(marked length 330 mm, equivalent to 13 in.)

Acoustic couplant general temperature type
(non-adhesive)

(100 g, –30 to +130°C) (0.22 lb, –22 to +266°F)

Acoustic couplant high temperature type (non­adhesive)

(100 g, –30 to +200°C) (0.22 lb, –22 to +392°F)

Acoustic couplant weatherproof type (adhesive)
(*10)

(100 g, –40 to +180°C) (0.22 lb, –40 to +356°F)

below.
Before and during curing : 0 to +50°C / 32 to 122°F
After curing : –40 to +180°C / –40 to 356°F

IM 01G05B03-01E 1st Edition 5

 Dimensional Drawing

Standard Specifications

Ultrasonic flowmeter US300FM

Transducers US300FT-

□B□

Unit: mm (inch)

Transducers US300FT-□C□, US300FT-□D□

Transducers X m (inch) Y m (inch) X+Y m (inch) Weight kg (lb)
US300FT-□B□ 2.0 ( 78.7) 1.0 ( 39.4) 3.0 (118.1) 0.9 (1.98)
US300FT-□C□ 2.0 ( 78.7) 2.4 ( 94.5) 4.4 (173.2) 1.5 (3.31)

US300FT-□D□ 5.0 (196.9) 7.0 (275.6) 12.0 (472.4) 2.5 (5.51)

6 IM 01G05B03-01E 1st Edition

Connection Cable US300FC

 Wirings

Terminal Layout

Cable Connection

Standard Specifications

Terminal Designations

Terminal

Name
AV
AVS
AR
ARS
BV
BVS
BR
BRS
SA1
SA2
SA3
SA4

SB1
SB2
SB3
SB4

Downstream transducer signal for
channel A
Upstream transducer signal for
channel A
Downstream transducer signal for
channel B
Upstream transducer signal for
channel B

Sensor ROM for channel A

Sensor ROM for channel B

Description

Terminal

Name
P1+
P1­P2+
P2­P3+
P3­P5a
P5b
P6a
P6b
PE
N(-)
L(+)

PE
N(-)
L(+)

Current output (+,–)

Current output (+,–) when specifying "two
current outputs"

Frequency output (+,–)(optional)

Binary (pulse or alarm) output (optional)

Same as above

Earth
Neutral
AC power supply (100 to 230 V AC ±10%)

(Earth)
DC–
DC+ (24 V DC ±10%)

*1: Either of these according to specified power supply

specification.

Description

*1

*1

IM 01G05B03-01E 1st Edition 7