Toshiba LF434 User manual

TIC-LF434H
Introduction
The electromagnetic flowmeter uses Faraday’s Law of
electromagnetic induction to measure the process flow.
The device consists of two units: a detector, through
which the fluid to be measured flows and in which
low-level signals proportional to flow rates are
obtained; and a converter, which supplies excitation
current to the detector, and amplifies the signals from
the detector and then processes and converts the signals
into the 4–20 mAdc current signal or communication
signal. With the unique patented Mount-Anywhere
magnetic field distribution technology, the meter is
highly immune to upstream flow disturbances.
Combined with a multi-functional converter LF620
(combined type) or LF622 (separate type) equipped
with its patented Noise-Sentry original noise-
suppression circuit and advanced algorithms. The
LF430 has a very high tolerance to noise, giving the unit
a very stable output even for slurry fluid measurement.
IR (Infrared) switches enable parameter setting of the
converter without removing the cover. Flow direction
can be set in either way, and its unique 128 x 128 dot
matrix LCD display allows the LCD to be rotated
electronically to 90, 180 and 270 degrees without
opening the cover. The terminal block in LCD side
make easy to wire in case of the combined type.
* HARTprotocol (Highway Addressable Remote Transducer) is a
communication protocol for industrial sensors recommended
by the HCF (HARTCommunication Foundation).
** DevComm2000 Smart Device Communicator available
through TIC for performing HART device configurations on
PC or laptop.
* PROFIBUS is the communications protocol for factory and
process automation that the PROFIBUS Organization
recommends. Instead of analog control with a conventional
analog signal (4-20 mA), it is fieldbus which digitizes all
signals. Flowmeters support PROFIBUS-PA.
* Modbus is the communication protocol that Modicon Inc.
developed. Physical layer is RS485.
Figure1. Configuration
LF430/LF620 LF430 LF622
LF434/LF620F LF434 LF622F
Figure2. LF430 Mount-Anywhere series
Flowmeters
Specifications
Overall Specifications
Measurement range in terms of flow velocity:
0–1.0ft/s to 0 –32.8 ft/s (0–0.3m/s to 0 –10 m/s)
0–0.3ft/s to 0 –1.0 ft/s (0 –0.1 m/s to 0 –0.3 m/s)
range is available as an option.
Accuracy:
< 1/2" to 18" ( 15mm to 450mm )>
±0.2 % of Rate*
* This pulse output error result is established under standard
operating conditions at Toshiba's flow calibration facility,
Fuchu Japan. (NIST Traceable).
* Individual meter measurement error may vary up to ±0.5% of
Rate at 1.64 ft/s (0.5m/s) or more and ±0.3% of rate ±0.039
inch/s (1mm/s) at 1.64 ft/s or less.
* Current output: plus ± 8µA (0.05% of span.)
* Refer to individual calibration data for each individual
meter's measurement error.
< 20" and 24" ( 500mm and 600mm )>
±0.3 % of Rate*
* This pulse output error result is established under standard
operating conditions at Toshiba's flow calibration facility,
Fuchu Japan.
* Individual meter measurement error may vary up to ±0.5% of
Rate at 3.28 ft/s (1.0m/s) or more and ±0.3% of rate ±0.079
inch/s (2mm/s) at 3.28 ft/s (1.0m/s) or less.
* Current output: plus ± 8µA (0.05% of span.)
* Refer to individual calibration data for each individual meter's
measurement error.
Field Intelligent Device – Mount Anywhere Series - Flanged
Electromagnetic Flowmeter LF434 /LF620
LF434 /LF622
1/2" to 24" (15 to 600 mm)
Cert. No.
Z01207
Combined t
y
pe
Separate t
y
pe
Cert. No. PM09896
For Hard rubber
lined flowmeter

TIC-LF434H
2
Fluid conductivity: 5µS/cm minimum
Fluid temperature:
14 to 248 °F (-10 to +120 °C):
Teflon PFA lined flowmeter
14 to 176 °F (-10 to +80 °C):
EPDM rubber lined flowmeter
23 to 176 °F
(
-
5 to +80 °C):
Hard rubber lined flowmeter for NSF
Ambient temperature: -4 to 140 °F (-20 to +60 °C)
Structure:
Standard — IP 67 and NEMA 4X Watertight
Option — IP68 and NEMA 6P Submersible type is
available only when EPDM rubber liner or Hard
rubber liner is used, the coating for this type is
black tar epoxy resin coating 0.5mm. This type of
flowmeter is submersible to 5 m in water.
Power consumption:
Standard:10W(14VA)
at AC100V and Excitation current:0.2A
MAX:15W (22VA)
MAX:17W(24VA) with PROFIBUS
Conformance to European Community Directives:
EMC directive 89/336/EEC
The low voltage 93/68/EEC
PED 97/23/EC (Note)
Note: See table 1 for detail.
Approved hazardous location certifications:
Model: LF434/LF620F and LF434/LF622F
cFMus explosion proof:
FM Class I, Division 2, Groups A,B,C, and D.
FM Class II, Division 2, Groups E, F and G.
FM Class III.
Detector and converter combination:
LF430/LF620: Combined type for standard
specification.
LF430/LF622: Separate type for standard
specification.
LF434/LF620F: Combined type with Ex approval of
Class I, Division 2 (cFMus).
LF434/LF622F: Separate type with Ex approval of
Class I, Division 2 (cFMus).
Mount-Anywhere Technology:
With TOSHIBA’s unique patented magnetic field
distribution technology, the meter is highly immune
to upstream flow disturbances. A minimum of 1D
(one diameter) length of upstream straight pipe from
the flange is required to maintain the specification
performance.
Note: The test results were obtained and demonstrated at
TOSHIBA's flow calibration facility, Fuchu Japan.
Drinking water approvals:
Hard rubber liner: NSF
Note: Hard rubber liner is available from 4” to 24”.
Model LF430 and LF434 Detectors
Mounting style: Flange connection type
Fluid pressure:
-
15 psi or
-
1.0 bar (
-
0.1 MPa) to the nominal
pressure of the connection flange.
Note: Before shipping from the manufacturer, each detector unit
is tested by following test condition.
Pressure… twice of the pressure index number
(ex. 300 psi in case of ANSI 150 flange)
Time… 15 minutes
Connection flange standards:
ANSI 150, ANSI 300, BS10, BS16, DIN PN10,
DIN PN16, JIS10K, JIS16K, JIS20K
Principal materials:
Case — carbon steel
Flange material —
1/2" to 8" (15mm to 200mm): 304 stainless steel
10" to 18" (250mm to 450mm): carbon steel
3" to 24" (80 to 600mm) for NSF: carbon steel
Linings —
Teflon PFA, EPDM rubber & Hard rubber with
NSF approval.
(Refer to table 6 about the available meter sizes
for each lining.)
Note: Teflon liners are mechanically retained for full
vacuum service.
Electrodes —
Type-Super smooth, polished with self cleaning
finish, and non stick shape
316L stainless steel (std.)
Hastelloy C equivalent (std.)
… in case of Teflon PFA lining
Note: Electrodes are electro-chemically polished after
mechanically buffed.
Grounding rings — 316 stainless steel (std.)
Note: See Table 6 for optional materials and other related
information.
Measuring tube material — 304 stainless steel
Coating: Corrosion resistant phthalic acid resin coating
(std.), pearl-gray colored
Note: If the optional IP68 and NEMA 6P structure is specified,
the coating is black tar epoxy resin coating 0.5 mm.
Dimensions and weights: See Figure 3 and 4.

TIC-LF434H
3
Cable connection port: for separate type detectors.
Cable gland —
LF430: Provided as standard, R(PT) 1/2 male
screws.
LF434: Not provided, 3/4–14NPT male screws
are required.
Applicable diameter —
0.433 to 0.512 inch (11 to 13mm)
Model LF620 and LF622 converters
Input signals
Analog signal —the voltage signal from detector,
proportional to process flow rate (for LF622
separate type converter).
Digital input DI
Signal type: 20 to 30Vdc voltage signal
Input resistance: 2.7kΩ
Number of inputs: one point
Note: DI cannot be used with the Modbus
communication.
DI function — One of the following functions can
be assigned to the optional DI signal.
Range switching — Selects either the higher or
lower range in the unidirectional or bidirectional
2-range setting.
Totalizer control — Starts and stops the built-in
totalizer.
Fixed-value outputs —Outputs fixed-values for
current and pulse outputs.
Zero adjustment — Executes zero adjustment
(on-stream at zero flow rate).
Output signals
Current output:
4–20mAdc (load resistance 0 to 750Ω)
Note: The current output cannot be used with the
PROFIBUS-PA communication.
Digital outputs — Two points are available as
follows.
Digital output DO1:
Output type: Transistor open collector
Number of outputs: One point
Output capacity: 30Vdc, 200mA maximum
Note: DO1 cannot be used if Modbus communication
connection is 3 lines.
Digital output DO2:
Output type:
Solid-state relay output (non polarity)
Number of outputs: One point
Output capacity: 150Vdc, 150mA maximum or
150Vac (peak to peak), 100mA maximum
Note: DO2 cannot be used with the Modbus
communication.
DO1 and DO2 functions — One of the following
functions can be assigned to DO1 (std.) and/or
DO2 (opt.)
• Pulse output (available only for DO1, DO2)
Pulse rate: Max 10kHz (10,000pps) (DO1)
Max 100Hz (100pps) (DO2)
(Over 1kpps, auto-setting)
Pulse width: 0.5 to 500ms (but less than half of
the period for 100% flow rate)
Note: The same and simultaneous pulse is not available
between DO1 and DO2.)
• Multi-range selection outputs (Note 1)
• High, High high, Low, and/or Low low alarm
outputs (Note 2)
• Empty pipe alarm output (Note 2)
• Preset count output
• Converter failure alarm output
Note 1: Two outputs (DO1 and DO2) are needed for
4-range switching and forward/reverse 2-range
switching.
Note 2:Normal Open (default set) or Normal Close is
selected for alarm outputs when programming.
When power failure occurs, unit will be fault to
Normal Open.
Communications output:
• HART (std.) — Digital signal is superimposed on
4–20mAdc current signal as follows:
Conforms to HART protocol
Load resistance: 240 to 750Ω
Load capacitance: 0.25µF maximum
Load inductance: 4mH maximum
• PROFIBUS (opt.)
Protocol: PROFIBUS-PA
Baud rate: 31.25kbps
Bus voltage: 9-30VDC
Consumption electric current of bus: less than 16mA
Manufacture Ident-No.: 093BHEX
Standard Ident-No.: 9740HEX
Slave address: 0-126 (Default address is 126)
Profile: Profile Ver.3.01 for Process Control
Devices
Function blocks: AI (Flow)×1 , Totalizer×1
•Modbus (opt.)
Physical layer : RS485
Protocol : Modbus
Mode : RTU
Baudrate : 4800, 9600, 19200bps

TIC-LF434H
4
Data length : 8bit
Parity bit : None, Odd, Even
Stop bit : 1bit, 2bit
Error check : CRC-16
Max. station number : 32(with Master device)
Max. cable length : 1.2km (Note)
Note: This length is specification of 3 line
connection.
LCD display:
Full dot-matrix 128×128 dot LCD display
(back–light provided)
The data on the LCD inside the converter can rotate
to 90, 180, and 270 degrees by a software, without
rotating the indicator itself. (Combined type only)
Parameter settings — Parameters can be set as
follows:
• IR Switches: Three key switches are provided
to set configuration parameters.
• Digital communication: The AF900 hand-held
terminal or PROFIBUS is needed to set
parameters.
• Zero adjustment: Zero point adjustment can
be started by pressing the switch in the
converter.
• Damping: 0.5 to 60 seconds (selectable in one
second increments)
“Field re-verification” Mag-Prover–
Toshiba’s Zero span calibration tool allows
unit to be re-calibrated and verified using an
internal software program (For more
information contact Toshiba International
Corp.)
Conditions when power fails:
Parameter setting values are stored in non–volatile
memory and the values will be restored when the
power returns to normal condition. The outputs and
display will remain as follows when power fails.
• Current output: 0mAdc
• Digital output: OFF
• LCD display: No display
• HART: No communication
• PROFIBUS: No communication
• Modbus: No communication
Power supply:
One of the following can be selected:
• 100 to 240Vac, 50/60Hz (std.)
(allowable voltage 80 to 264Vac)
• 24Vdc (allowable voltage 18 to 36Vdc)
• 110Vdc (allowable voltage 90 to 130Vdc)
Surge protection:
Arresters are installed in the power supply and a
current signal output circuit to help protect the meter
from lightning and improve personnel safety.
Case: Aluminum alloy (equal to IP 67)
Coating:
Acrylic resin-baked coating, pearl–gray colored
Cable connection port:
Cable glands —
LF620 and LF622 without cFMus Approval:
Provided as standard, Outer Diameter of cable
φ11~13mm
Material Nylon 66
G (PF) 1/2 male screws.
LF620F and LF622F with cFMus Approval:
Not provided, 1/2–14NPT male screws are
required.
Applicable diameter —
0.433 to 0.512 inch (11 to 13mm)
Note: When PROFIBUS option is specified, cable gland size is
φ6～8mm for signal cable, φ11～13mm for power
cable
Vibration resistance:
No resonance to the following levels of vibration:
• 10 to 150Hz with acceleration of 9.8m/s2
• Vibration of 30Hz with 29.4 m/s2 in 4h in each
direction will not cause any defect to unit.
Note: Avoid using the flowmeter in an environment with
constant vibration.
Dimensions and Weights:
See Figure 5 (for Separate type)
MTBF:
Converter: 220,000 hours (25 years) at 77 °F (25 °C)
based on strict military specification
MIL-HDBK-217F
Detector: 350,000 hours (40 years) at 77 °F (25 °C)
based on strict military specification
MIL-HDBK-217F
PED matrix in each flange connection
The following sizes fall under the category for PED in
each flange connection when the meter ships to EU.
All of them had complied with it from a notified body.
Table1. PED matrix in each flange connection
Flan
g
e standard Meter size
DIN PN 16 and BS 16 150 to 400mm
(6 to 16 inch)
DIN PN 10 and BS 10 250 to 400mm
(10 to 16 inch)
ANSI 150 and JIS10K 6 to 16 inch
(150 to 400mm)
Note: Hard rubber lined flowmeter had not complied with PED

TIC-LF434H
Installation
Dimensions
Note1: Eye bolts are provided at the top for flowmeters sized 8" (200mm) or above, and further, a roll-prevention base is provided
for flowmeters sized 10" (250mm) or larger.
Note2:Cable glands are not provided for LF434 of cFMus approved type. Refer to the part Cable connection port at
detector.
ANSI class 150 dimensions:
Meter siz
e
(inch) L1 (inch) L2 (inch) L3 (inch) No. of volts Weight (lbs)
1/2 5.51 8.07 9.82 4 a
p
prox. 11
1 6.30 8.19 10.31 4 a
p
prox. 15
1-1/2 6.69 8.50 11.00 4 a
p
prox. 2
0
2 7.09 8.86 11.85 4 approx. 27
3 9.06 9.41 14.91 4 approx. 4
4
4 9.45 10.12 14.63 8 approx. 57
6 10.24 11.30 16.79 8 approx. 85
8 11.81 12.32 19.07 8 approx. 12
6
10 13.78 13.23 21.23 12 approx. 252
12 15.75 14.29 23.80 12 approx. 301
14 17.72 14.96 25.46 12 approx. 358
16 19.69 15.79 27.54 16 approx. 46
0
18 21.65 17.52 28.90 16 approx. 51
4
20 23.62 18.13 31.89 20 approx. 47
0
24 23.62 20.18 36.18 20 approx. 62
0
BS16 and DIN PN16 dimensions:
Meter size
(mm) L1 (mm) L2 (mm) L3 (mm) No. of bolts Weight (kg)
15 140 205 252 4 a
p
prox. 5.
0
25 160 208 265 4 approx.7.5
40 170 216 291 4 approx.9.5
50 180 225 308 4 approx.11.5
80 230 239 339 8 approx.16.5
100 240 257 367 8 approx. 20.5
150 260 287 430 8 a
p
prox. 36.
0
200 300 313 483 12 approx.49.
0
250 350 336 539 12 a
p
prox.105
300 400 363 593 12 approx.113
350 450 380 640 16 approx.13
0
400 500 401 684 16 approx.173
JIS 10K dimensions:
Meter size
(mm) L1 (mm) L2 (mm) L3 (mm) No. of
b
olt
s
Weight
(kg)
15 140 205 253 4 a
p
prox. 5.
0
25 160 208 271 4 approx. 7.5
40 170 216 286 4 approx. 9.5
50 180 225 303 4 approx. 11.5
65 (*4) 20
0
234 321 4 approx. 14.
0
80 230 239 332 8 approx. 16.5
100 240 257 362 8 approx. 20.5
150 260 287 427 8 a
p
prox. 36.
0
200 300 313 478 12 approx. 49.
0
250 350 336 536 12 a
p
prox.105
300 400 363 586 16 approx.113
350 450 380 625 16 approx.13
0
400 500 401 681 16 a
p
prox.173
450 550 430 740 20 approx.200.
0
500 600 461 798 20 approx.180.
0
600 600 513 910 24 approx.240.
0
Figure 3. LF430/LF620 and LF434/LF620F combined type flowmeters
Meter Sizes 1/2" (15) to 24" (600mm)
Note 3 : 1 inch = 25.4 mm
Note 4 : JIS 10K flange only without any Ex-approvals.
Note 5: 20”(500mm) and 24”(600mm) are only available in
ANSI 150 and JIS10K flanges for Hard Rubber lined meters.
Unit: inch (mm)

TIC-LF434H
6
3.46
(
88
)
1.57 (40)
4.96 (126)
1.38 (35)
(L2)
(L1)
(L3)
3.58 (91)
Note1: Eye bolts are provided at the top for flowmeters sized 8" (200mm) or above, and further, a roll-prevention base is
provided for flowmeters sized 10" (250mm) or larger.
Note2: Cable glands are not provided for LF434 of cFMus approved type. Refer to the part Cable connection port at detector.
ANSI class 150 dimensions:
Meter siz
e
(inch) L1 (inch) L2 (inch) L3 (inch) No. of volts Weight (lbs)
1/2 5.51 5.79 7.56 4 approx. 9
1 6.30 5.87 7.99 4 approx. 13
1-1/2 6.69 6.22 8.74 4 approx. 18
2 7.09 6.57 9.57 4 approx. 24
3 9.06 7.13 10.87
4 approx. 40
4 9.45 7.83 12.36
8 approx. 52
6 10.24 9.02 14.53
8 approx. 81
8 11.81 10.03 16.81 8 approx. 120
10 13.78 10.94 18.94 12 approx. 249
12 15.75 12.01 21.54 12 approx. 298
14 17.72 12.68 23.19 12 approx. 355
16 19.69 13.50 25.28 16 approx. 459
18 21.65 14.63 27.13 16 approx. 510
20 23.62 15.81 29.57 20 approx. 470
24 23.62 17.90 33.90 20 approx. 620
BS16 and DIN PN16 dimensions:
Meter size
(mm) L1 (mm) (L2) (mm) L3 (mm) No. of bolts Weight (kg)
15 140 147 194 4 approx. 4.0
25 160 149 207 4 approx. 6.0
40 170 158 233 4 approx. 9.0
50 180 167 250 4 approx. 11.5
80 230 181 281 8 approx. 17.5
100 240 199 309 8 approx. 22.0
150 260 229 372 8 approx. 37.0
200 300 255 425 12 approx. 52.0
250 350 278 481 12 approx. 108
300 400 305 535 12 approx. 121
350 450 322 582 16 approx. 145
400 500 343 633 16 approx. 188
450 550 372 707 20 approx. 208
JIS 10K dimensions:
Meter size
(mm) L1 (mm) (L2) (mm) L3 (mm) No. of bolts Weight (kg)
15 140 147 194 4 approx. 4.0
25 160 149 212 4 approx. 6.0
40 170 158 228 4 approx. 8.0
50 180 167 244 4 approx. 10.0
65 (*4) 200 176 263 4 approx. 15.
0
80 230 181 274 8 approx. 16.0
100 240 199 304 8 approx. 20.0
150 260 229 369 8 approx. 35.0
200 300 255 420 12 approx. 48.0
250 350 278 478 12 approx. 106
300 400 305 528 16 approx. 116
350 450 322 567 16 approx. 141
400 500 343 623 16 approx. 176
450 550 372 682 20 approx. 200
500 600 403 740 20 approx. 180
600 600 455 852 24 approx. 240
Note 3 : 1 inch = 25.4 mm
Note 4 : JIS 10K flange only without any Ex-approvals.
Note 5: 20”(500mm) and 24”(600mm) are available for only
ANSI150 and JIS10K flange of Hard rubber lining.
Unit: inch (mm)
Figure 4. Separate type detectors LF430 and LF434
Meter sizes 1/2" (15) to 24" (600mm)

TIC-LF434H
7
Figure 5. Separate type converter LF622 and LF622F
External Connections
Combined type LF430/LF620 flowmeter and LF434/LF620F flowmeters
Grounding with 100Ωor less
ground resistance
Instrument panel : Ordered separately
I/O cable
(CVV-S)
Ⅳwire 5.5mm
2
or more
Current output (4～20mAdc)
or PROFIBUS
Power supply
Power cable
(CVV)
Digital input
(20～30Vdc)
Signal common for DI and DO
Digital output 1
Digital output 2
Grounding with 100Ωor less
ground resistance
or Modbus
Power switch
(External double-pole power switch)
NOTE:
In the case of the integral type, the signal line
(A, B, G ) and the excitation line ( E, X, Y ) are
the connector joints.
Grounding with 100Ωor less
ground resistance
*1 Locate an external double-pole power switch on the power line near the flowmeter within easy reach of operation.
Use the appropriate switch rating as shown below:
Switch rating: 250Vac, 6A or more
In rush current: 15A or more
Figure 6. Combined type LF430/LF620 and LF434/LF620F flowmeters Wiring Diagram
N
ote: Cable glands are not provided for LF622F cFMus approved type.
Refer to the part Cable connection port at detector.
LCD display
Attachment
I/O cable ground
Excitation cable ground
Power supply
cable ground
Option cable ground
Signal cable ground
IR Switch
Plate

TIC-LF434H
8
Separate type LF430/LF622 flowmeter and LF434/LF622F flowmeters
G
roun
di
ng w
i
t
h
100
Ω
or
l
ess
g
round resistance
I
nstrument pane
l
:
O
r
d
ere
d
separate
l
y
I/O cable
(CVV-S)
Grounding with 100Ωor less
ground resistance
Ⅳwire 5.5mm
2
or more
C
urrent output
(4
～
20
m
Ad
c
)
or PROFIBUS
P
ower supp
l
y
Power cable
(CVV)
Di
g
i
ta
l
i
nput
(
20～30Vdc
)
Si
gna
l
common
f
or
DI
an
d
DO
Digital output 1
Di
g
i
ta
l
output
2
G
roun
di
ng w
i
t
h
100
Ω
or
l
ess
ground resistance
or Modbus
Signal cable
(2-wire shielded hard-rubber sheathed cable)
Connected detector
Excitation cable
(3-wire shielded hard-rubber cable)
Thick walled steel conduit
Power switch
(External double-pole power switch)
Figure 7. Separate type LF430/LF622 and LF434/LF622F flowmeters wiring Diagram
Table 2. LF620, LF620F, LF622 and LF622F Converters Signal Table
Symbol Description Cable
L1 (＋) Power supply Power cable (CVV)
L2 (－)
GND Ground (for arrester)
FG Frame groun
d
DI Digital Input (20～30V
d
c)
I/O cable (CVV-S)
DO1 Digital Output 1
DO2 Digital Output 2
COM Signal Common for DI, DO1, DO2
＋Current Output (4～20mAdc)
or PROFIBUS
－Shielded cable for
PROFIBUS-PA
XExcitation cable
(for LF622,LF622F only)
Y Excitation Output
E
ASignal cable
(for LF622,LF622F only)
B Signal Input
G
T+ Modbus(+) Twisted-pair polyethylene
insulated vinyl sheath cable
(JKEV,AWG24(0.2mm2))
T- Modbus(-)
TG Modbus(GND)
Note: Symbol of the terminal is changed as follows for Modbus.
DO2 →T+, DI →T-, COM →TG

TIC-LF434H
9
Wiring Precautions
(1)Explosion proof type flowmeters are not provided
with cable glands.
Refer to the part Cable connection port at detector
and converter.
(2) Connect the grounding wire (IV wire 5.5mm² or
more) to a good earth ground (100Ωor less ground
resistance). Make the wire as short as possible. Do
not use a common ground shared with other
equipment where earth current may flow. An
independent earth ground is recommended.
(3) The allowable cable lengths between the detector
and converter for the separate type flowmeter
depend on the electrical conductivity of the object
fluid. See Figure 8.
(4) DO1, DO2, and DI use the same common terminal
(COM). This COM can not connect to other
equipment which have their own ground terminal.
(Power supply for connecting to DI or DO, etc.)
Need to wire separately.
Wiring Precautions (PROFIBUS or
Modbus)
(1) For wiring path, avoid places near electrical
equipment that may cause electromagnetic induction
or electrostatic induction interference (such as a
motor, transformer and wireless transmitter).
(2) Use a PROFIBUS-PA cable for signal cable or a
RS485 twisted-pair cable.
In addition, make sure to use a shielded cable to
improve noise resistance. Furthermore, installation
of signal cable in metal conduit is recommended.
(3) General PROFIBUS-PA cables are designed for
indoor use where cables are not exposed to humidity,
rain, etc. When you install cables, make sure to
check the operating conditions such as the operating
temperature range of the cable by contacting its
manufacturer.
(4)When you carry out cable end treatment of
PROFIBUS-PA cable, use a dedicated cable stripper
to avoid the core wire of the cable being nicked or
damaged. In addition, for cables, be careful of
allowable maximum bend diameter. (Do not allow
excessive twisting or bending of cables).
(5)Consider installing a PROFIBUS-PA arrester in the
communication path of PROFBUS-PA so that the
electromagnetic flowmeter will not be affected by
lightning, etc.
(6) The electromagnetic flowmeter is not equipped with
terminating resistors. Use the terminating resistor
unit for PROFIBUS-PA or junction box, if
necessary.
(7) Only one PROFIBUS-PA cable goes through a
cable gland of the Electromagnetic Flowmeter.
Please use the junction box at system
configuration.
(8) Install a terminator to flowmeter that connects
to end of Modbus network.
300
200
100
3
5
10
30
50
3 5 10 2030 50100200
Conductivity (μS/cm)
Allowable cable length (m)
20
Figure 8. Electrical Conductivity and
Cable Length
Meter Size
To select the meter size:
See Table 3 to 4 and findmeter sizes withinthevelocity
of 0.3 to 32.8 ft/s(0.1to10m/s) for a specified full-scale
(measuring range high limit) flow. Select one that has
its full-scale velocity between 3.0 and 10 ft/s (1 and
3m/s).
Note: Make sure the full-scale flow rate used for the final
planning stage stays within 32.8ft/s (10m/s) in terms of
flow velocity.
Table 3. Flow Rate and Flow velocity (English unit)
Unit: gal/min
Size
(inch) Flow rate 0.328 ft/s 0.98 ft/s 3.0 ft/s 10 ft/s 32.8 ft/s
1/2 0.2801 0.8403 2.561 8.532 28.01
1 0.7781 2.334 7.115 23.72 77.81
1 ½ 1.992 5.975 18.21 60.71 199.2
2 3.112 9.337 28.46 94.86 311.2
3 7.967 23.90 72.85 242.8 796.7
4 12.45 37.35 113.8 379.4 1,245
6 28.01 84.03 256.1 853.8 2,801
8 49.80 149.4 455.3 1,518 4,980
10 77.81 233.4 711.5 2,372 7,781
12 112.0 336.1 1,025 3,415 11,200
14 152.5 457.5 1,394 4,648 15,250
16 199.2 597.5 1,821 6,071 19,920
18 252.1 756.3 2,305 7,684 25,210
20 311.2 933.7 2,846 9,486 31,120
24 448.2 1344.0 4,098
1,3660 44,820

TIC-LF434H
10
Table 4. Flow Rate and Flow velocity (SI unit)
Unit: m3/h
Size
(mm) Flow rate
0.1 m/s 0.3 m/s 1.0 m/s 3.0 m/s 10 m/s
15 0.06362 0.1908 0.6361 1.908 6.361
25 0.1767 0.5301 1.767 5.301 17.67
32*1 0.2895 0.8686 2.895 8.686 28.95
40 0.4523 1.357 4.523 13.57 45.23
50 0.7067 2.120 7.067 21.20 70.67
65*1 1.195 3.583 11.95 35.83 119.5
80 1.809 5.428 18.09 54.28 180.9
100 2.827 8.482 28.27 84.82 282.7
150 6.361 19.08 63.61 190.8 636.1
200 11.31 33.93 113.1 229.3 1,131
250 17.67 53.01 176.7 530.1 1,767
300 25.45 76.34 254.5 763.4 2,545
350 34.64 103.9 346.4 1,039 3,464
400 45.23 135.7 452.3 1,357 4,523
450 57.25 171.7 572.5 1,717 5,725
500 70.69 212.1 706.9
2,112 7,069
600 101.8 305.4 1,018
3,054 10,180
Note 1: JIS 10K flange type only.
Calibration Range
If the calibration range is not specified, the standard
range as shown below will be used. If the range is
specified, we will use the specified range for
calibration.Table 5. Standard Flow Range
Meter size Standard flow range
mm (inch) Flow
rate Flow velocity Flow rate Flow velocity
(m³/h) (m/s) (gal/min)
(ft/s）
15 (1/2) 2 3.144 25 29.283
25 (1) 6 3.395 75 31.625
32 (1 1/4) 10 3.454 125 32.171
40 (1 1/2) 15 3.316 175 28.826
50 (2) 25 3.537 300 31.625
65 (2 1/2) 40 3.348 475 29.629
80 (3) 60 3.316 650 26.766
100 (4) 100 3.537 1,000 26.354
150 (6) 200 3.144 2,500 29.283
200 (8) 300 2.653 4,500 29.649
250 (10) 600 3.395 7,000 29.517
300 (12) 900 3.537 10,000 28.283
350 (14) 1,200 3.465 12,000 25.817
400 (16) 1,600 3.537 16,000 26.354
450 (18) 2,500 4.366 20,000 26.029
500(20) 3,000 4.244 25,000 26.354
600(24) 4,000 3.930 40,000 29.283
Note: The unit of "gal/min" is not exchanged
(converted) by "m3/h".
About establishment environment
Do not store or install the flowmeter:
• Where there is direct sunlight.
• Where excessive vibration or mechanical shock
occurs.
• Where high temperature or high humidity conditions
exist.
• Where corrosive atmospheres exist.
• Places that can be submerged under water.
• When placing the flowmeter temporarily on the floor,
support it, i.e., with a block so that the flowmeter
does not topple over.
In areas like the following, there may be the case that
infrared switches do not function correctly. (If these are
unavoidable, use an appropriate cover.)
(1) Where unit (operation panel) is exposed to direct
sunlight, reflection of light onto window pane and
diffused light reflection.
(2) Where smoke and steam may occur.
(3) Where exposed to direct snow, ice or mud.
Ordering Information
1. When ordering the LF430 series flowmeters, refer to
Tables 6 and 7 (Type Specification Codes).
An entry must be made for each of the columns in
each of these tables.
2. Fluid characteristics:
(1) Type of fluid to be measured and its characteristics
(2) Fluid temperature
(3) Fluid pressure
(4) Electrical conductivity of the fluid
3. Measuring range
4. I/O function setting
5. Ordering scope:
Flow calibration data: (required or not)
6. Other items
Specifications other than standard items
Consult a Toshiba representative before ordering
when choosing materials of the wetted parts such as
lining, electrodes, and grounding rings.
Toshiba International Corp. (Houston) stocks
Hazardous location certification type
flowmeters as standard inventory.

TIC-LF434H
11
Table 6. Specification Code (Flange type detector LF430 Series)
Model Specification Code Description Detector category
1 2 3 4 5 6 7 8 9 10 11 12 13 14 Normal type Class 1 Div 2
Gr.-A Gr.-B Gr.-C Gr.-D Gr.-E
L F 4 3 0 Normal specification type √√
L F 4 3 4 Hazardous location (Class 1 Div 2) type (Note 1) √ √ √
Metersize
D ½"(15mm)
√
√
E 1"(25mm)
√
√
S 1¼"(32mm) (Note 7)
√
–
F 1½"(40mm)
√
√
G 2"(50mm)
√
√
W 2½"(65mm) (Note 7)
√
–
H 3"(80mm)
√
√
J 4"(100mm)
√
√
√
K
6"(150mm)
√
√
√
L 8"(200mm)
√
√
√
M 10"(250mm)
√
√
√
N 12"(300mm)
√
√
√
P 14"(350m
m
)
√
√
√
Q 16"(400m
m
)
√
√
√
R
5
6
18"(450m
m
)
√
√
√
20"(500m
m
)
√
24"(600m
m
)
√
MountingStyle
L Detector/Converter combined type (LF430/LF620)
√
√
M Detector/Converter separate type (LF430/LF612)
√
√
P Detector/Converter combined type with PED (LF430/LF620) (Note 6)
√
√
Q Detector/Converter separate type with PED (LF430/LF622) (Note 6)
√
√
cFMus Class I - Division 2 type (Note 1)
A Detector/Converter combined type (LF434/LF620F)
√
√
√
B Detector/Converter separate type (LF434/LF622F)
√
√
√
Connection flange standar
d
C ANSI150   
D ANSI300   –
E BSPN10   –
F BSPN16   –
G DIN PN 10
DIN PN 16
  –
H   –
J JIS10
K
  
K
JIS16
K
  –
L JIS20
K
  –
Z Othe
r
 – – –
Electrode Material (Note 5)
B 316L stainless steel   
C Ti (titanium)   
D Pt-Ir (platinum/iridium)   –
E Ta(tantalum)   –
F Hastelloy C (Equivalent)   
Z Othe
r
 – – –
LiningMaterials(Note5)
C TeflonPFA(½”
–
16” )  Note 8 Note 8 –
D
E EPDM Rubbe
r
(3”
–
18” ) –  –  –
Hard Rubbe
r
with NSF approval ( 4”
–
24” ) – – –– 
Grounding Ring Material (Note 5)
C 316 stainless steel   
D 316L stainless steel   
E Ti (titanium)   
F Ta(tantalum) – – – – –
G Pt-Ir (platinum/iridium) – – – – –
H Hastelloy C (Equivalent)   
Z Othe
r
 – – –
Flow and calibration velocity range
A 1.0 to 32.8 ft/s (standard range calibration)   
B 1.0 to 32.8 ft/s (specified range calibration)   
C 0.3 to 32.8 ft/s (specified range calibration)   
Excitation and Signal Cables
A not provide
d
  
B 30m cable, provided (Note 2)   
C other lengths, provided (Note 3)   
Coating
B
p
hthalic acid resin coating pearl-gray colore
d
  
C
b
lack tar epoxy resin 0.3mm   
D
b
lack tar epoxy resin 0.5mm   
E
b
lack tar epoxy resin 0.5mm for submersible type (Note 4) –  –  
Size code explanation: √: Object : Standard : Option – : Not available
Note1: Cable glands are not provided. Refer to the part of “Cable connection port” at detector and converter.
Note2: Separate type detector only.
Note3: Separate type detector only. Specifying the code “C”, indicate the length of cables from 1 to 300m 1 meter increments.

TIC-LF434H
TIC-LF434H
Note4: EPDM rubber lining or Hard rubber lining is available to choose only in this specification.
Note5: Consult Toshiba before ordering when choose materials at the wetting parts.
Note6: Check Table 1 whether your chosen meter size meets this directive or not when the meter is shipped to EU. If yes, choose this code.
Note7: JIS 10K flange only without any Ex-approvals.
Note8: Not available in ANSI 300 flange
Table 7. Specification Code for converters
Model Specification Code Contents LF620
type LF622 type
1 2 3 4 5 6 7 8 9 10 11 12 13 14
L F 6 2 Electromagnetic flowmeter converter
0 Combined (Integral) type  –
2 Separate (Remote) type – 
A
F
Purpose
Standard
cFMus class I, Division 2 approved




A Shape Standard type with case


A
C
E
Converter mounting fitting
None
Panel, Accessory for wall mounting (BNP material: SUS304)
Accessory for pipe installation (BNP material: SUS304)

–
–



2 Digital input/output Digital output points 2 (DO1+DO2) +Digital input point 1 (DI)
 
1
2
3
Current output and Communication function
Current output + HART communication
PROFIBUS communication (Current output is not functional)
Current output + Modbus (RS485) communication
(Digital outputs 2 (DO1+DO2) and Digital 1 (DI) input are not functional)






1
2
3
Power supply
100Vac-240Vac, 50/60Hz
24Vdc
110Vdc






E Instruction manual English
 
Code explanation: : Standard : Option – : Not available
Note 1: When digital output 1 function and Modbus communication function are used at one time, TG (signal ground) of the Modbus
communication function cannot be connected (2 line connection).
ISO9001 and ISO14001 are certified.
Misuse of this product can result in damages to property or human injury.
Read related manuals carefully before using this product.
Specifications are subject to change without notice.
Printed in Japan 2010-6 (TDOC)
© TOSHIBA Corporation 2010
All Rights Reserved.
http://www.toshiba.com/ind
/