Toshiba Home Safety Product LF232F User Manual

LF502/LF232*F  
6” to 24”  
Electromagnetic Flowmeter for  
Partially-filled Pipes  
(150 to 600 mm )  
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  
technique enables a high-precision flow measurement  
continually 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.  
LF502  
LF232*F  
Compared with flowmeters measuring the flow rate by  
means of flow level, the obstruction less LF502  
flowmeter 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  
Specifications  
Overall Specifications  
The AF900 hand-held terminal (HART*1  
Measurement range:  
communicator) can be used to communicate with the  
flowmeter from a remote place.  
*1: HART protocol (Highway Addressable Remote  
Transducer) is a communication protocol for industrial  
sensors recommended by the HCF (HART  
Communication Foundation).  
Meter size  
Measurement range  
0 – 264 GPM(std) to 0 – 1320 GPM  
6” (150mm)  
(0 – 60 m3/h to 0 – 300 m3/h )  
0 – 484 GPM(std) to 0 – 2420 GPM  
(0 – 110 m3/h to 0 – 550 m3/h )  
0 – 770 GPM(std) to 0 – 3850 GPM  
(0 – 175 m3/h to 0 – 875 m3/h )  
0 – 1100 GPM(std) to 0 – 5500 GPM  
(0 – 250 m3/h to 0 – 1250 m3/h )  
0 – 1540 GPM(std) to 0 – 7700 GPM  
(0 – 350 m3/h to 0 – 1750 m3/h )  
0 – 1980 GPM(std) to 0 – 9900 GPM  
(0 – 450 m3/h to 0 – 2250 m3/h )  
0 – 3124 GPM(std) to 0 – 15620 GPM  
(0 – 710 m3/h to 0 – 3550 m3/h )  
0 – 4400 GPM(std) to 0 – 22000 GPM  
(0 – 1000 m3/h to 0 – 5000 m3/h )  
8” (200mm )  
10” (250mm )  
12” (300mm )  
14” (350mm )  
16” (400mm )  
20” (500mm )  
24” (600mm )  
Converter  
Power supply  
Signal cable  
Detector  
Note: Above flow rate is almost 0 – 3.28 ft/s (std) to 0 –  
Excitation cable  
4-20 mAdc  
16.4 ft/s (0 – 1 m/s to 0 – 5 m/s ) flow velocity.  
Fluid-level range:  
Digital I/O  
Meter size  
Specification  
6” to 12” m  
(150 to 300m )  
14” to 24”  
1-1/4”(30mm ) to fully-filled condition.  
10% of inside tube diameter to  
Figure 1. LF502/LF232*F Configuration  
(350 to 600mm ) fully-filled condition.  
Note: The fully-filled condition means a 100% of inside  
tube diameter.  
Accuracy: ±2% FS (when measurement range is  
standard)  
Note: The accuracy is measured under standard  
operating conditions at Toshiba's calibration  
facility.  
TIC-LF502A  
 
TIC-LF502A  
independently)  
In the case of DO1  
Parameter settings—Parameters can be set as follows  
IR Switches: Various parameters can be set without  
opening the converter housing using 4 infrared  
switches (password can be set)  
Pulse rate: 3.6 to 3,600,000 pulses/h  
Pulse width:Settable within the range of 0.3 to  
500ms  
•Zero adjustment: Zero point adjustment can be  
In the case of DO2  
started by pressing the switch in the converter.  
Pulse rate: 3.6 to 360,000 pulses/h  
Pulse width: Settable within the range of 4 to  
500ms  
Digital communication: The AF 900 hand-held  
terminal is needed to set parameters.  
Damping: 0.5 to 60 s  
Rage switching output  
(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.)  
One Digital Output (DO) is used  
Single direction, 2-range switching signal  
Forward/reverse direction switching signal  
Two Digital Outputs (DO) are used  
Single direction, 4-range switching signals  
Forward/reverse 2-range switching signals  
Conditions when power fails:  
High/low limit alarm output  
Parameter setting values are stored in non-volatile  
memory and the values will be restored when the  
power returns to normal condition The output and  
display will stay as follows when power fails..  
Current output: 0 mA  
An alarm is output when flow rate goes above or  
below the set-point value  
Setting range : -10 to 110% of the settable  
maximum range  
High limit 2 points, low limit 2 points can be set  
At the time of alarm output, Normally Open or  
Normally Closed contact can be selected  
Digital output : OFF (contact open)  
LCD display : No display  
• Preset point output  
Contact ON when totalizer count exceeds the set  
value  
Surge protection: Surge protectors are installed in the  
power supply, excitation circuit, current signal  
output and digital I/O circuit.  
Setting range: 1 to 99999999 count  
Terminal block structure:21-pole, screw connection  
• Converter error alarm  
An alarm is output when an operation error is  
detected by self-diagnosis.  
At the time of alarm output, Normally Open or  
Normally Closed contact can be selected  
type (M4 screw)  
Housing: Aluminum alloy  
Coating: Acrylic resin-baked coating, pearl-gray  
colored  
Cable connection ports :  
A cable gland is provided for each port.  
OD of cable φ11 to 13 mm  
Material Nylon 66  
Communications signal:  
A digital communications (HART protocol) signal is  
superimposed on 4 to 20 mA dc analog output signal.  
Load resistance: 240 to 1 kΩ  
Load capacitance: 0.25 µF or less  
Load inductance: 4mH or less  
(For maximum cable length, about 2km is a  
guideline length when CVV-S 1.25mm2 is used  
under standard installation condition.)  
G(PF) 1/2 male screws.  
Structure: IP67 and NEMA 4X Watertight  
Vibration resistance:  
No resonance to the following levels of vibration:  
• 10 to 55Hz with amplitude of 0.07mm,  
• Vibration of 30Hz with 29.4 m/s2 in 4h in each  
Note: HART(Highway Addressable Remote  
Trans-ducer) is a communications protocol for  
industrial sensors recommended by the HCF  
(HARTCommu-nication Foundation).  
direction will not cause any defect to unit.  
Note: Avoid using the flowmeter in an environment  
with constant vibration.  
Dimension and Weights:  
See Figure 5  
Output display:  
16-character×2-line dot-matrix LCD  
(With back light).  
2 units can be selected from the flowing units: flow  
velocity, instantaneous flow rate, total flow  
(forward/reverse/difference flow), total count, %,  
custom unit.  
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TIC-LF502A  
Installation  
Dimensions  
Separate type LF502 (Meter size 10” to 24”)  
Dimensions  
Separate type LF502 (Meter size 6” and 8”)  
Unit: inch (mm)  
Unit: inch (mm)  
3.46 (88)  
1.57 (40)  
4.96 (126)  
5.63 (143)  
4.96 (126)  
5.63 (143)  
3.46 (88)  
1.57 (40)  
1.42 (36)  
1.42 (36)  
11.81(300)  
Roll-prevention base  
Figure 4. Detector Dimensions for Meter Sizes  
10” (250 mm) to 24” (600 mm)  
Figure 3. Detector Dimensions for Meter Sizes  
6” (150 mm) and 8” (200 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.  
See the following tables for dimensions of L1, L2  
and L3 in Figure 3 above, and the number of bolts  
required for each flange.  
ANSI 150 flange dimensions:  
ANSI 150 flange dimensions:  
Meter  
L1  
L2  
L3  
No. of  
Weight  
(lb)  
Meter  
L1  
L2  
L3  
No. of  
Weight  
(lb)  
Size (inch) (inch) (inch) (inch) bolts  
Size (inch) (inch) (inch) (inch) bolts  
6
8
10.47  
9.67  
15.14  
8
8
Approx.84  
Approx. 194  
10  
12  
14  
16  
20  
24  
13.78 12.05 20.05  
15.75 12.95 22.45  
17.72 13.74 24.24  
19.69 15.12 26.87  
23.62 16.42 30.17  
23.62 18.46 34.46  
12  
12  
12  
16  
20  
20  
263  
318  
359  
476  
527  
701  
11.81 10.69 17.42  
JIS 10K flange dimensions:  
Meter  
L1  
L2  
L3  
No. of  
Weight  
(kg)  
Size (mm) (mm) (mm) (mm) bolts  
150  
200  
266  
300  
246  
271  
386  
436  
8
12  
Approx. 35  
Approx. 80  
JIS 10K flange dimensions:  
Meter  
L1  
L2  
L3  
No. of  
Weight  
(kg)  
Size (mm) (mm) (mm) (mm) Bolts  
250  
300  
350  
400  
500  
600  
350  
400  
450  
500  
600  
600  
306  
329  
351  
386  
403  
455  
506  
551  
596  
666  
740  
852  
12  
16  
16  
16  
20  
24  
Approx. 110  
Approx. 120  
Approx. 130  
Approx. 180  
Approx. 190  
Approx. 250  
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TIC-LF502A  
Dimensions  
9.33 (237)  
Installation method  
4-φ12 hole  
8.74 (222)  
2.91 (74)  
6.10 (155)  
In the case of 2B pipe installation  
ト  
M10 U bolts  
Signal cable ground  
Output cable ground  
Power supply cable ground  
11 to 12 φhole  
2.91 (74)  
4 places  
Grounding terminal  
2.99 (76)  
I/O cable ground  
2.99 (76)  
2.99 (76)  
Weight : Approximately18 lb (8 kg)  
(including a mounting bracket)  
Excitation cable ground  
Figure 5. Separate type converter LF232F  
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TIC-LF502A  
External Connections  
Terminal box  
Power supply  
(CVV)  
wire  
5.5mm2 or more  
Power supply  
Grounded with 100or  
less ground resistance  
Current output (4 to 20mA)  
Digital input 2 (opt.)  
Thick walled steel conduit  
Digital input 1 (opt.)  
(20 to 30 Vdc)  
Digital output 4 (opt.)  
Digital output 3 (opt.)  
Digital output 2 (opt.)  
Digital output  
Detector  
Signal cable  
(2-wire shielded hard-rubber sheathed cable)  
Excitation cable  
(3-wire hard-rubber sheathed cable)  
Output cable  
(CVV-S)  
Digital I/O cable  
(CVV-S)  
Figure 6. LF502/LF232*F flowmeter Wiring Diagram  
non-conductive like plastic, use a 5.5mm2 or  
Wiring Precautions  
larger core cable for grounding of detector and  
wire 1 place as follows.  
(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.  
• Between Grounding terminal at detector  
body and Grounding (100 ohm or less).  
(4) DO1 to DO4 and DI1 to DI2 use the same  
common terminal (COM). This COM can not  
connect to other instruments that have their  
own ground terminal (Power supply for  
connecting to DI or DO, etc...). Need to wire  
separately.  
(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.  
(3) The meter may affect its accuracy when the  
electric potential of measurement fluid is  
unstable condition.  
• Make the piping of the upstream side and  
downstream side the same material.  
• When the material of next pipes are conductive  
like metal, use a 5.5mm2 or larger core cable for  
grounding of detector and wire it at 2 places as  
follows.  
• Between Grounding terminal at detector body  
and Grounding ring at upstream side.  
• Between Grounding terminal at detector body  
and Grounding ring at downstream side.  
• When the material of next pipes are  
6
 
TIC-LF502A  
About establishment environment  
Do not store or install the flowmeter:  
• Where there is direct sunlight.  
Piping Precautions  
(1) Flange connection  
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 gasket between them. See Figure 7.  
Tighten the bolts in even increments diagonally  
across.  
• 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.  
• Where there is sloped floor. To put the flowmeter  
temporarily on the floor, place it carefully with  
something, such as stopper, to support it so that the  
flowmeter will 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.  
Observation Upstream flange  
window  
Downstream flange  
Bolt  
Observation  
window  
Flow  
directio  
(2) Where smoke and steam may occur.  
Gasket  
(3) Where exposed to direct snow, ice or mud.  
Figure 7. Flange Connection  
Ordering Information  
(2) Required straight pipe length  
1. When ordering the LF502 flowmeter, refer to  
Table 1 (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. Digital I/O specifications  
5. Ordering scope:  
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:L = 10D minimum  
where,  
L = straight pipe length (straight pipeline length  
+ half length of detector pipe length)  
Flow regulation  
Observation window  
.
valve etc  
Detector  
Actual flow calibration data:(Required or not)  
6. Other items  
Specifications other than standard items  
10D minimum  
5D minimum  
Note: The length of reducers, if used, can be counted as  
a part of straight pipe length.  
Figure 8. Required Straight Pipe Length on  
Upstream and Downstream Sides  
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TIC-LF502A  
Table 1. Specification Code for LF502 detector  
Specification Code  
Model  
Size  
Description  
1
2
3
5
4
0
5
2
6
7
8
9
10 11 12  
A
B
L
F
LF502 Electromagnetic flowmeter  
Meter size  
K
L
M
N
P
Q
R
S
6" (150mm )  
8" (200mm )  
10" (250mm )  
12" (300mm )  
14" (350mm )  
16" (400mm )  
20" (500mm )  
24" (600mm )  
-
-
-
-
-
-
-
-
A
Standard  
ꢀ ꢀ  
Connection flange standard  
ANSI 150  
JIS 10K  
C
J
ꢀ ꢀ  
ꢀ ꢀ  
Lining  
C
D
T
Chloroprene rubber  
EPDM rubber  
Teflon PFA  
-
-
Electrode and Grounding Ring Material  
316L stainless steel + 316 stainless steel  
Titanium + Titanium  
Hastelloy C + Hastelloy C  
316L stainless steel + 304 stainless steel  
B
C
F
H
Flow and calibration velocity range  
Standard range calibration  
A
Coating  
B
C
D
Phthalic acid resin  
Black tar epoxy resin , thickness 0.3mm  
Black tar epoxy resin , thickness 0.5mm  
ꢀ ꢀ  
E
Black tar epoxy resin , thickness 0.5mm (for submersible type)  
Code explanation: : Standard : Option  
: Not available  
Size groups  
A : 6” (150mm ) to 16” (400mm )  
B : 20” (500mm ) and 24” (600mm )  
Table 2. Specification Code for LF232*F converter  
Model  
Specification Code  
LF232  
type  
Contents  
1
L
2
3
2
4
5
2
6
7
8
9 10 11 12  
F
3
Separate type converter  
Purpose  
Standard  
A
Compatible detectors  
F
For Partially-filled pipes (Meter size : 150mm(6”) to 600mm(24”) )  
Mounting nuts and bolts  
Panel, wall mounting (material : 304 stainless steel)  
C
E
Pipe mounting  
Digital input/output  
Current output  
+ Digital output points (1 point)  
Current output  
(material : 304 stainless steel)  
1
3
+ Digital output points (4 points) + Digital input points (2 points)  
Communication function  
HART communication  
1
Power supply  
100Vac-120Vac, 50/60Hz  
Standard  
1
A
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 certified.  
Misuse of this product can result in damages to property or human injury.  
Read related manuals carefully before using this product.  
TIC-LF502A  
 

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