Toshiba LF232*F specifications Overall Specifications, Measurement range, Fluid-level range

Electromagnetic Flowmeter for LF502/LF232*F

Partially-filled Pipes6” to 24”

(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.

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.

The AF900 hand-held terminal (HART*1 communicator) can be used to communicate with the

LF502LF232*F

Figure 2. LF502 Electromagnetic Flowmeter

for Partially-filled Pipes

Specifications

■Overall Specifications

Measurement range:

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).

Converter
Detector Signal cable	Power supply

Meter size

6” (150mm)

8” (200mm )

10” (250mm )

12” (300mm )

14” (350mm )

16” (400mm )

20” (500mm )

24” (600mm )

Measurement range

0 – 264 GPM(std) to 0 – 1320 GPM

(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 )

Excitation cable

4-20 mAdc

Digital I/O

Figure 1. LF502/LF232*F Configuration

Note: Above flow rate is almost 0 – 3.28 ft/s (std) to 0 – 16.4 ft/s (0 – 1 m/s to 0 – 5 m/s ) flow velocity.

Fluid-level range:

Meter size	Specification
6” to 12” m	1-1/4”(30mm ) to fully-filled condition.
(150 to 300m )
14” to 24”	10% of inside tube diameter to
(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