Toshiba Automobile Parts LF502 User Manual

F-IN-D Series  
LF502  
150 to 600 mm  
( 6to 24)  
Electromagnetic Flowmeter for  
Partially-filled Pipes  
Introduction  
The LF502 electromagnetic flowmeter uses Faraday’s  
Law of electromagnetic induction in the same way as  
conventional electromagnetic flowmeters to measure  
the flow rate. Position of electrodes in the LF502 is so  
designed that it can be used even in a partially-filled  
pipe to measure the flow rate.  
Improved functional magnetic field distribution tech-  
nique enables a high-precision flow measurement con-  
tinually from low-level to fully-filled flow conditions.  
This eliminates unnecessary piping work such as lifting  
the downstream pipe section to fill the detector pipe.  
Compared with flowmeters measuring the flow rate by  
means of flow level, the obstructionless LF502 flow-  
meter does not usually allow mud, sands and other  
solid sediment stay at the bottom of the detector pipe  
and is unaffected by wave or floating solids on the fluid  
surface.  
Figure 2. LF502 Electromagnetic Flowmeter  
for Partially-filled Pipes  
Fluid-level range:  
x 30 mm (1 1/4”) to fully-filled condition for Meter  
sizes 150 mm (6”) to 300 mm (12”)  
The AF100 hand-held terminal or the Model 275 HART  
communicator can be used to communicate with the  
flowmeter from remote places using the HART com-  
munications protocol. See the communications output  
specifications for details about the HART protocol.  
x 10% of inside tube diameter to fully-filled condition  
for Meter sizes 350 mm (14”) to 600 mm(24”)  
Accuracy: ±2 % FS (when measurement range is  
standard)  
Note: The accuracy is measured under standard  
operating conditions at Toshiba's calibration facility.  
Converter  
Required straight pipe length:  
Detector  
10D minimum on upstream side and  
5D minimum on downstream side  
Signal cable  
Power supply  
Note: D is a nominal meter size.  
Fluid conductivity:  
Fluid temperature:  
100µS/cm minimum  
0 to 55 °C (32 to 131 °F)  
Ambient temperature: –10 to 50 °C (14 to 122 °F)  
4-20 mA dc  
Excitation  
cable  
Digital I/O  
Detector Specifications  
Figure 1. LF502 Configuration  
Meter sizes: 150 mm (6”), 200 mm (8”), 250 mm  
(10”), 300 mm (12”), 350 mm (14”), 400 mm  
(16”), 500 mm (20”), and 600 mm (24”)  
Fluid pressure: 0 to 2.0 MPa under fully-filled fluid  
condition for flange-connected flowmeters  
Specifications  
Overall Specifications  
Measurement range:  
Connection flange standards: ANSI 150, BS 16,  
DIN PN16 and others.  
Meter size  
Measurement range  
in mm (inch)  
Structure: NEMA 4 (IP 67) Watertight (standard),  
NEMA 6 (IP 68) Submersible (option)  
Coating:  
150 mm (6”)  
200 mm (8”)  
250 mm (10”)  
300 mm (12”)  
350 mm (14”)  
400 mm (16”)  
500 mm (20”)  
600 mm (24”)  
0 – 60 m3/h (std) to 0 – 300m3/h  
0 – 110 m3/h (std) to 0 – 550m3/h  
0 – 175 m3/h (std) to 0 – 875m3/h  
0 – 250 m3/h (std) to 0 –1250m3/h  
0 – 350 m3/h (std) to 0 –1750m3/h  
0 – 450 m3/h (std) to 0 –2250m3/h  
0 – 710 m3/h (std) to 0 –3550m3/h  
0 –1000 m3/h (std) to 0 –5000m3/h  
Phthalic acid resin coating, pearl-gray colored  
(standard for watertight type) or black tar epoxy  
(option for watertight type and specified  
exclusively for submersible type)  
EJL- 064A  
 
LF502  
Power supply: One of the following power supply  
JIS 10K flange dimensions:  
specifications can be selected:  
Mass  
Meter  
L1  
L2  
L3  
No. of  
bolts  
(kg)  
size (mm) (mm) (mm) (mm)  
• 100 to 120 V ac (90 to 132 V ac), 50/60 Hz  
• 200 to 240 V ac (180 to 264 V ac), 50/60 Hz  
(option)  
150  
200  
266  
300  
245  
271  
385  
436  
8
8
approx. 35  
approx. 80  
• 24 V dc (22 to 27 V dc) (option)  
Dimensions  
Power consumption: approximately 24 VA  
Surge protection: Surge protectors are installed in  
the power supply and current signal output circuit.  
Case: Cast aluminum  
Coating: Melamine resin  
Painting color: Light gray (munsell N7)  
Structure: NEMA 4 (IP 67) Watertight  
Cable connection port: Rc(PT) 3/4 male screw  
Vibration resistance:  
No resonance to the following levels of vibration:  
• 5 to 33 Hz with acceleration of 9.8 m/s2  
Note: Avoid using the flowmeter in an environment  
with constant vibration.  
Roll-prevention base  
Unit: mm  
Installation  
Dimensions  
Figure 4. Detector Dimensions for Meter Sizes  
250 mm (10”) to 600 mm (24”)  
Unit: mm  
See the following tables for dimensions of L1, L2 and  
L3 in Figure 4 above, and the number of bolts required  
for each flange.  
BS16 and DIN PN16 flange dimensions:  
Mass  
(kg)  
L2  
(mm)  
L3  
No. of  
Meter  
L1  
(mm) bolts  
size (mm) (mm)  
250  
300  
350  
400  
500  
600  
350  
400  
450  
500  
600  
600  
306  
329  
351  
386  
401  
452  
509  
559  
611  
676  
758  
872  
12 approx. 110  
12 approx. 120  
16 approx. 130  
16 approx. 180  
20 approx. 190  
20 approx. 250  
ANSI class 150 flange dimensions:  
Mass  
(lb)  
Figure 3. Detector Dimensions for Meter Sizes  
150 mm (6”) and 200 mm (8”)  
Meter  
L1  
L2  
L3  
No. of  
size (inch) (inch) (inch) (inch) bolts  
10  
12  
14  
16  
20  
24  
13 3/4 12  
15 3/4 13  
17 3/4 13 7/8 24 7/8  
19 5/8 15 1/4 27 3/8  
23 5/8 15 3/4 30 3/8  
23 5/8 17 3/4 34 5/8  
20 1/8  
22 3/4  
12 approx. 244  
12 approx. 267  
12 approx. 289  
16 approx. 400  
20 approx. 422  
20 approx. 556  
See the following tables for dimensions of L1, L2 and  
L3 in Figure 3 above, and the number of bolts required  
for each flange.  
BS16 and DIN PN16 flange dimensions:  
Mass  
(kg)  
Meter  
L1  
L2  
L3  
No. of  
JIS 10K flange dimensions:  
size (mm) (mm) (mm) (mm) bolts  
Mass  
(kg)  
L2  
L3  
No. of  
Meter  
L1  
150  
200  
266  
300  
245  
271  
388  
441  
8
12  
approx. 35  
approx. 80  
(mm)  
(mm) bolts  
size (mm) (mm)  
250  
300  
350  
400  
500  
600  
350  
400  
450  
500  
600  
600  
306  
329  
351  
386  
401  
452  
506  
551  
596  
666  
738  
849  
12 approx. 110  
12 approx. 120  
16 approx. 130  
16 approx. 180  
16 approx. 190  
24 approx. 250  
ANSI class 150 flange dimensions:  
Meter  
L1  
L2  
L3  
No. of  
Mass  
(lb)  
size (inch) (inch) (inch) (inch bolts  
6
8
10 1/2 9 5/8 15 1/8  
11 3/4 10 5/8 17 1/2  
8
8
approx. 78  
approx. 178  
3
 
LF502  
Dimensions (Converter)  
Flow regulation  
valve etc1  
Observation window  
Detector  
10D minimum  
5D minimum  
Note: The length of reducers, if used, can be  
counted as a part of straight pipe length.  
Figure 7. Required Straight Pipe Length on  
Upstream and Downstream Sides  
Unit: mm  
Mass: approx. 18 kg  
(including mounting bracket)  
External Connections  
Four-Dia. 12 holes  
Grounding  
terminal  
Figure 5. Converter Dimensions  
Piping Precautions  
(M6 screw)  
Intermediate  
(1) Flange connection  
voltage (IV)  
wire, 5.5 mm2  
minimum  
Power cable  
Signal cable  
Digital I/O cable  
(multi-wire  
(2-wire cable)  
(2-wire shielded  
sheathed cable)  
The flowmeter has upstream and downstream  
flanges on the ends of detector pipe. Connect  
these flanges with the flanges on both sides of  
pipeline bore using connection bolts after  
inserting a packing between them. See Figure 6.  
Tighten the bolts in even increments diagonally  
across.  
shielded cable)  
100 • or less  
ground resistance  
Excitation cable  
Current output cable  
(3-wire sheathed cable) (2-wire shielded cable)  
Figure 8. Converter Terminal Connections  
Signal cable (2-wire shielded sheathed cable)  
Upstream  
flange  
Observation  
window  
Downstream flange  
Observation window  
Thick walled steel conduits  
Excitation cable (3-wire sheathed cable)  
Flow direction  
Detector  
Packing  
Figure 9. Detector Terminal Connections  
Wiring Precautions  
Figure 6. Flange Connection  
(2) Required straight pipe length  
(1) Be sure to use thick walled steel conduit (22  
mm) for signal and excitation cable wiring  
between the detector and converter. The  
conduit screw is R(PT)1/2. Use flexible  
conduits at the cable outlets of the detector as  
needed.  
The straight pipe length is required to prevent  
uneven flow velocity and a disturbance on the  
fluid surface in the detector pipe. The required  
straight pipe length should be as follows:  
• Downstream side: L = 5D minimum  
• Upstream side:  
where,  
L = straight pipe length (straight pipeline length  
+ half length of detector pipe length)  
L = 10D minimum  
(2) Make the grounding 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.  
4
 
LF502  
Table 1. Type Specification Code  
( Model LF502 Flowmeter)  
Ordering Information  
1. When ordering the LF502 flowmeter, refer to  
Table 1 and 2 (Type Specification Codes). An  
entry must be made for each of the columns in  
each of these tables.  
Size  
Model  
Specification Code  
Description  
A
B
LF502 Electromagnetic Flowmeter  
Meter size  
150 mm (6")  
K
L
200 mm (8")  
M
N
P
Q
R
S
250 mm (10")  
300 mm (12")  
350 mm (14")  
400 mm (16")  
500 mm (20")  
600 mm (24")  
Connection flange standard  
ANSI 150  
BS16  
DIN PN16  
JIS 10K  
other  
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  
C
F
H
J
3. Measuring range  
Z
Electrode and Grounding Ring Material  
SUS316L+SUS316 (standard.)  
SUS316L+SUS316L  
Ti (titanium)+Ti (titanium)  
Hastelloy C+Hastelloy C  
SUS316L+SUS304  
other  
Lining Material  
Teflon PFA  
Chloroprene rubber  
other  
4. Digital I/O specifications  
B
C
D
E
F
5. Ordering scope:  
(1) Actual flow calibration data:  
(required or not)  
6. Other items  
Z
T
C
Z
Specifications other than standard items  
Power Supply  
A
B
C
Z
100 to 120 V ac, 50/60 Hz (standard)  
24 V dc  
200 to 240 V ac, 50/60 Hz  
other  
Converter Mounting Bolts and Nuts  
Panel, wall mount (carbon steel SS400)  
Panel, wall mount (304 stainless steel)  
Pipe mount (carbon steel SS400)  
Pipe mount (304 stainless steel)  
other  
A
B
C
D
Z
Detector Connection Bolts, Nuts and  
Packings  
A
Z
not provided  
other  
Dedicated Preformed Cable  
30 m provided  
B
C
other lengths, provided  
Coating of detector  
Phthalic acid resin  
Black tar epoxy resin 0.3 mm  
Black tar epoxy resin 0.5 mm  
Black tar epoxy resin 0.5 mm  
(for submersible type)  
other  
B
C
D
E
Z
Size groups.  
A: 150 mm (6”) to 400 mm (16”)  
B: 500 mm (20”) and 600 mm (24”)  
Size code explanation:  
Standard  
Option Not available  
5
 
Year 2000 Compliance:  
This equipment does not have any clock in itself. Thus, there is no problem in the  
year 2000 compliance.  
Specifications are subject to change without notice  
Printed in Japan 11/98 (TDOC)  
© TOSHIBA Corporation 1998  
All Rights Reserved.  
Misuse of this product can result in damage to property or human injury.  
Read related manuals carefully before using this product.  
EJL- 064A  
 

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