Toshiba Home Safety Product LF470 LF612 User Manual

LF470/LF612  
1/10",1/6”,1/4" (2.5,4,6mm )  
Field Intelligent Device Series  
Electromagnetic Flowmeter  
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  
mA dc current signal. The LF470 is a small meter size  
detector designed to measure a small amount of fluids  
containing substances such as chemicals.  
LF612  
LF470  
Figure 2. Electromagnetic Flowmeter  
LF470/LF612  
The wetted materials for the LF470 are corrosion  
resistant ceramic and platinum electrods and are  
applicable to almost any kind of fluids. The LF470 is a  
lightweight palm-sized detector.Combined with  
multi-functional converter LF612 (separate type) and  
LF232*1 (separate type) equipped with its patented  
Noise-Sentry original noise-suppression circuit and  
advanced algorithms. The LF470 is highly resistant to  
noise and provides a stable output even for fluids  
containing slurries. 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 be rotated to 90, 180  
and 270 degrees without opening the cover  
Certification number  
Z01207  
Specifications  
Overall Specifications  
Measurement range in terms of flow velocity:  
0–1.0ft/s to 0–32.8ft/s (0–0.3 m/s to 0–10 m/s )  
Accuracy: The overall accuracy combined with the  
LF612 or LF232 converter is shown in the  
following table.  
The AF900 hand-held terminal (HART*2 communicator)  
can be used to communicate with the flowmeter from a  
remote place. PROFIBUS-PA*3 interface is available  
as an option.  
Flow rate as a  
percent of range  
Accuracy  
1.0-3.3ft/s  
(0.3-1.0m/s )  
3.3-32.8ft/s  
(1.0-10m/s )  
50 100  
0.8% of FS  
0.8% of FS  
0.8% of rate  
50  
±
±
±
±
*1: Please refer to the document ”TIC-LF232”.  
*2: HART protocol (Highway Addressable Remote  
Transducer) is a communication protocol for industrial  
sensors recommended by the HCF (HARTCommunication  
Foundation).  
0
0.4% of FS  
Note: The accuracy is measured under standard  
operating conditions at Toshiba's calibration facility.  
*3: PROFIBUS is the communication protocol for factory  
and process automation that the PROFIBUS Organization  
recommends. Instead of analog control with a  
conventional analog signal (4-20mA), it is the fieldbus  
which digitizes all signals. Flowmeters support  
PROFIBUS-PA.  
Fluid conductivity: 50µS/cm minimum  
Fluid temperature:  
Pipe connection material Fluid temperature  
Stainless steel and other metals  
14 to 248 °F  
10 120 )  
(
℃~+  
14 to 140 °F  
10 60 )  
Polyvinyl chloride  
(shock-resistant)  
Fluid to be  
measured  
(
℃~+  
Ambient temperature: 14 to 140 °F (–10 to +60 °C )  
Structure: IP67  
Power supply  
Signal cable  
Excitation cable  
4-20mA dc output  
Power consumption:  
and pulse output  
When combined with the LF612 converter:  
LF470  
LF612 or LF232  
Detector  
approximately 12W (20VA)  
Converter  
When combined with the LF232 converter:  
Figure 1. Configuration Diagram  
approximately 14W (25VA)  
TIC-LF470B  
 
TIC-LF470B  
Power supply:  
Communications output :  
One of the following can be selected:  
• 100 to 240Vac, 50/60Hz (std.)  
(allowable voltage 80 to 264Vac)  
• HART (std.) — Digital signal is superimposed on  
4–20mAdc current signal as follows:  
Conforms to HART protocol  
• 24Vdc (allowable voltage 18 to 36Vdc)  
• 110Vdc (allowable voltage 90 to 130Vdc)  
Load resistance: 240 to 750Ω  
Load capacitance: 0.25µF maximum  
Load inductance: 4mH maximum  
• PROFIBUS(opt.)  
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.  
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  
Case: Aluminum alloy (equal to IP 67)  
Coating: Acrylic resin-baked coating, pearlgray  
colored  
Cable connection port:  
Cable glands —  
Function blocks: AI(Flow)×1 , Totalizer×1  
Provided as standard, OD of 11 to 13mm  
Material Nylon 66  
G (PF) 1/2 male screws  
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)  
Applicable diameter —  
0.433 to 0.512 inch (11 to 13mm)  
Note: When PROFIBUS option is specified, cable gland size is φ  
68mm for signal cable, φ1113mm for power cable  
Parameter settings — Parameters can be set as  
follows:  
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.  
• 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.  
Note: Avoid using the flowmeter in an environment with  
constant vibration.  
• Zero adjustment: Zero point adjustment can be  
Dimensions :  
See Figure 5  
started by pressing the switch in the converter.  
• Damping: 0.5 to 60 seconds (selectable in one  
MTBF:  
second increments)  
Converter: 220,000 hours (25 years) at 77 °F (25 °C)  
based on strict military specification  
MIL-HDBK-217F  
“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.)  
Detector: 350,000 hours (40 years) at 77 °F (25 °C)  
based on strict military specification  
MIL-HDBK-217F  
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  
• PROFIBUS: No communication  
3
 
TIC-LF470B  
Installation  
Dimensions  
Unit : inch (mm)  
2.20(56)  
Unit : inch (mm)  
3.39(86)  
2.95(75)  
1.18(30)  
**  
*
*
**  
1.46(37)  
Signal cable  
Detector mounting plate  
(4mm thick)  
2-φ0.24(φ6) hole  
Excitation cable  
φ0.28(φ7)  
φ0.28(φ7)  
*2.76(70)  
4-φ0.20(φ5) hole  
Mounting screws  
* This length becomes 78mm if the pipe  
connection port thread is Rc(PT)1/2  
and Rc(PT)3/4.  
Note: 1 inch = 25.4mm  
If a mounting plate is needed for the LF470, fix the plate (a)  
above to the bottom of the LF470. Depending on which pair of  
screw holes used, the mounting angle changes by 90°.  
2-M4  
(Mou nting screw holes)  
Note: 1 inch = 25.4mm  
Figure3. LF470 Dimensions  
Figure4. LF470 Mounting Board  
4 φ0. 43(φ11)  
5.94(151)  
0.51(13)  
Unit : inch (mm)  
0.98(25) 3.23(82)  
Attachment  
2.91(74)  
LCD display  
Excitation cable ground  
I/Ocable groundド  
Gr ound terminal  
(M4)  
Power supply cable ground  
Signal cable ground  
Blind screw  
IR Swi tc h  
Cable ground  
Note: 1 inch = 25.4mm  
Figure 5. Separate type converter LF612  
4
 
TIC-LF470B  
Separate type LF470/LF612 flowmeter  
Terminal board  
IV wire  
5.5 mm2 or more  
Thick walled steel conduit  
Grounded with 100or less  
ground resistance  
Power switch  
(External double-pole power switch )  
[Instrument panel : ordered separately]  
Grounded with 100or less  
Signal cable  
(2-wire shielded hard-rubber  
sheathed cable)  
ground resistance  
Power supply  
Current output (4~20mAdc)  
or PROFIBUS  
Digital output 1  
Signal common for DI and DO  
Connected detector  
Digital output 2  
Excitation cable  
Digital input  
(20~30Vdc)  
(3-wire shielded hard-rubber cable)  
Power cable  
(CVV)  
Digital input cable  
(CVV-S)  
Grounded with 100or less  
ground resistance  
Figure 6. Separate type LF470/LF612 flowmeters wiring Diagram  
Table 1. LF612 Converters Signal Table  
Symbol  
L1 ()  
L2 ()  
GND  
FG  
Description  
Cable  
Power supply  
Power cable (CVV)  
Ground (for arrester)  
Frame ground  
DI  
DO1  
Digital Input (2030Vdc)  
Digital Output 1  
DO2  
Digital Output 2  
COM  
Signal Common for DI, DO1, DO2  
I/O cable (CVV-S)  
Current Output (420mAdc)  
or PROFIBUS  
X
Y
E
A
B
G
Excitation cable  
Signal cable  
Excitation Output  
Signal Input  
5
 
TIC-LF470B  
Wiring Precautions  
About establishment environment  
Do not store or install the flowmeter:  
• Where there is direct sunlight.  
• Where excessive vibration or mechanical shock  
occurs.  
(1) Connect the following two cables correctly:  
1) signal cable (on the right facing the LF470)  
2) excitation cable (on the left facing the LF470)  
(2) Do not bend apply excessive force to these cables.  
Piping Precautions  
• Where high temperature or high humidity conditions  
exist.  
(1) Connect the fluid pipe to the pipe connection port  
using a joint that matches the Rc (PT) female screw.  
Use seal tapes when connecting the pipe to the port  
to prevent a fluid leakage. Do not tighten the  
connection screw too much.  
(2) Design piping so that the detector’s pipe is always  
filled with the fluid to be measured, whether the  
fluid is flowing or not.  
• Where corrosive atmospheres exist.  
• Places that can be submerged under water.  
• Where there is a sloped floor. To put the flowmeter  
temporarily on the floor, place it carefully with  
something, such as a block, to support it so that the  
flowmeter will not topple over.  
(3) The fluid to be measured must be held still in the  
pipe when the LF470 is being adjusted. If the fluid  
can not be stopped after the LF470 installation,  
install a bypass pipe in parallel with the LF470  
flowmeter.  
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.  
Meter size  
(2) Where smoke and steam may occur.  
To select the meter size:  
See Table 3 to 4 and find meter sizes within the  
velocity of 0.3 to 32.8 ft/s (0.1 to 10m/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 32.8 ft/s (10m/s) in  
terms of flow velocity.  
(3) Where exposed to direct snow, ice or mud.  
Ordering Information  
1. When ordering the LF470 flowmeters, refer to  
Tables 4 to 5 (Specification Code).  
An entry must be made for each of the columns in  
each of these tables.  
2. Fluid characteristics:  
Table 2. Meter size and Flow Velocity (SI unit)  
(1) Type of fluid to be measured and its characteristics  
(2) Fluid temperature  
Unit:gal/min  
Meter size  
0.98 ft/s  
3 ft/s  
10 ft/s  
32.8 ft/s  
(3) Fluid pressure  
(4) Electrical conductivity of the fluid  
3. Measuring range  
4. I/O function setting  
(inch)  
1/10”  
1/6”  
0.02334  
0.05975  
0.1344  
0.07115  
0.1821  
0.4098  
0.2372  
0.6071  
1.3660  
0.7781  
1.992  
4.482  
1/4”  
5. Ordering scope:  
Flow calibration data: (required or not)  
Table 3. Meter size and Flow Velocity(US unit)  
6. Other items  
Unit:L/min  
Specifications other than standard items  
Meter size  
0.3m/s  
1m/s  
3m/s  
10m/s  
(mm)  
2.5  
4
0.08835  
0.2262  
0.5088  
0.2945  
0.7540  
1.6967  
0.884  
2.262  
5.090  
2.945  
7.540  
Consult a Toshiba representative before ordering when  
choosing materials of the wetted parts such as lining,  
electrodes, and grounding rings.  
.
6
16.967  
6
 
TIC-LF470B  
Table 4. Specification Code ( LF470 Detector )  
Model  
Specification Code  
Description  
1 2  
L F 4  
3
4
7
5
0
6
7
8
9 10 11 12 13 14  
LF470 Flowmeter  
Meter size  
2
4
6
1/10" (2.5 mm )  
1/6" (4 mm )  
1/4" (6 mm )  
Converter ( Separate type ) combined  
LF612  
LF232 (Note 1)  
D
E
Pipe connection port (adapter)  
Rc (PT) 1/4 female screw (standard)  
Rc (PT) 1/8 female screw  
Rc (PT) 3/4 female screw  
Rc (PT) 1/2 female screw  
NPT1/4 female screw  
A
B
C
D
E
F
NPT3/8 female screw  
G
NPT1/8 female screw  
Pipe connection material  
316 stainless steel (standard)  
Ti (titanium)  
Polyvinyl chloride (shock-resistance)+  
Ta (Tantalum) for grounding plate  
Polyvinyl chloride (shock-resistance)+  
Pt-Ir for grounding plate  
Hastelloy C (Equivalent)  
Packing used between main body and pipe  
connection adapter  
A
D
E
F
H
C
D
G
Acid-resistant ceramic  
Alkali-resistant ceramic  
Ammonia-resistance  
Mounting  
A
B
Not provided  
Provided, 304 stainless steel  
Flow and calibration velocity range  
1.0 to 32.8 ft/s (standard range calibration)  
1.0 to 32.8 ft/s (specified range calibration)  
Cable length  
A
B
A
1
5m (cable dia.7mm)  
10m (cable dia.7mm)  
2
15m (cable dia.7mm)  
3
20m (cable dia.7mm)  
4
25m (cable dia.7mm)  
5
30m (cable dia.7mm)  
B
5m or more  
(extension dia. 12mm+Scotch cast connection)  
Coating  
A
Z
Phthalic acid resin coating pearl-gray colored (standard)  
Other  
Note 1: Please refer to document number “TIC-LF232” about converter LF232.  
7
 
TIC-LF470B  
Table 5. Specification Code for converters  
Model  
Specification Code  
Contents  
LF612  
type  
1 2 3 4 5 6 7 8 9 1011121314  
L F 6 1  
2
Electromagnetic flowmeter converter  
Separate (Remote) type  
Purpose  
Standard  
Shape  
Separate type with case  
A
B
Converter mounting fitting  
A
C
E
None  
Panel, Accessory for wall mounting (BNP material: SUS304)  
Accessory for pipe installation (BNP material: SUS304)  
Digital input/output  
1
2
Digital output points 1 (DO1)  
Digital output points 2 (DO1+DO2) +Digital input point 1 (DI)  
Current output and Communication function  
Current output + HART communication  
PROFIBUS communication (Current output is not usable)  
Power supply  
1
2
1
2
3
100Vac-240Vac, 50/60Hz  
24Vdc  
110Vdc  
Instruction manual  
E
English  
Code explanation:  
: Standard : Option  
Specifications are subject to change without notice.  
Printed in Japan 2008-5 (TDOC)  
© TOSHIBA Corporation 2008  
All Rights Reserved.  
ISO9001 and ISO14001 are certified.  
Misuse of this product can result in damage to property or human injury.  
Read related manuals carefully before using this product.  
TIC-LF470B  
 

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