Toshiba LF232'F User Manual

Page 1

Electromagnetic Flowmeter for

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 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

is unaffected by wave or floating solids on the fluid

and surface. The AF900 hand-held terminal (HART* 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 Communication Foundation).

Signal cable

Detector

Excitation cable

Partially-filled Pipes

eliminates unnecessary piping work

(HART

Converter

Power supply

4-20 mAdc

LF502/LF232*F

6” to 24”

(150 to 600 mm )

LF502

Figure 2. LF502 Electromagnetic Flowmeter

for Partially-filled Pipes

LF232*F

Specifications

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Overall Specifications

Measurement range:

Meter size Measurement range

6” (150mm)

8” (200mm )

10” (250mm )

12” (300mm )

14” (350mm )

16” (400mm )

20” (500mm )

24” (600mm )

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.

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 m

0 – 770 GPM(std) to 0 – 3850 GPM

(0 – 175 m

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 m

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 m

/h to 0 – 550 m3/h )

/h to 0 – 875 m3/h )

/h to 0 – 2250 m3/h )

/h to 0 – 5000 m3/h )

Digital I/O

Figure 1. LF502/LF232*F Configuration

Fluid-level range:

Meter size Specification

6” to 12” m

(150 to 300m )

14” to 24”

(350 to 600mm )

Note: The fully-filled condition means a 100% of inside

tube diameter.

1-1/4”(30mm ) to fully-filled condition.

10% of inside tube diameter to fully-filled condition.

Accuracy: ±2% FS (when measurement range is

standard)

Note: The accuracy is measured under standard

operating facility.

conditions at Toshiba's calibration

TIC-LF502A

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Required straight pipe length:

10D minimum on upstream side and

5D minimum on downstream side

Note: D is a nominal meter size.

Fluid conductivity: 100µS/cm minimum

Fluid temperature: 32 to 131 °F (0 to 55 °C )

Ambient temperature: 14 to 122 °F (-10 to 50 °C )

Dimensions and Weights: See figures 3 to 5.

Power supply:

100 to 120 Vac (80 to 132 Vac), 50/60Hz

Power consumption: 50VA (30W) or less

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Model LF502 Detector

Meter sizes: 6” (150 mm ), 8” (200 mm ), 10” (250

mm ), 12” (300 mm ), 14” (350 mm ), 16” (400 mm ), 20” (500 mm ), 24”(600 mm )

Fluid pressure:

0 psi or 0 bar (0 MPa) to the pressure limited by flange standard

(fully-filled condition)

Connection flange standards:

ANSI 150, JIS 10K

Structure:

IP67 and NEMA 4X Watertight (std. ) IP68 and NEMA 6P Submersible (opt.)

Coating: 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)

Principal materials:

Case — carbon steel Measuring pipe — 304 stainless steel Linings — The following are the standards:

Meter size Standard specification

6” to 16” (150 to 400mm ) EPDM rubber

20” & 24” (500 & 600mm ) Chloroprene rubber

Electrodes — 316L stainless steel (std.) Grounding rings — The following are the

standards.

Meter size Standard specification

6” to 16” (150 to 400mm ) 316 stainless steel

20” & 24” (500 & 600mm ) 304 stainless steel

See Table 1 for optional materials and other related information.

Coating: phthalic acid resin coating (std.), Pearl-gray colored

Cable connection port:

Cable glands: Provided as standard, R(PT) 1/2

male screw.

Applicable diameter: 0.433 to 0.512 inch (11

to 13mm )

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Model LF232*F converter

Input signals

Analog signal — the voltage signal from detector,

proportional to process flow rate.

Digital input DI (opt.) (added when 9

digit of specification code is ”3”)

Voltage level: High level 20 to 30 V dc

Low level 2 V dc or less Input resistance: 2.7 kΩ Number of inputs: 2 points (DI1 and DI2)

DI functions:

For digital input function, either of the following functions can be selected.

• Range switching One Digital Input is used: switching between large

and small ranges of forward/reverse, 2-range measurement.

Two Digital Inputs are used: switching between ranges of single direction, 4-range measurement.

• Totalizer control input

Totalizer Start/Stop control or Reset/Start

•Output hold input

Fixed with set value for current output and pulse output (loop check)

• Zero adjustment Starts zero adjustment (on-stream at zero flow rate)

when DI voltage level goes low after remaining high for 10 to 20 seconds.

Output signals

Current output:

4–20mAdc (load resistance 0 to 1KΩ)

Digital output (DO) — One point (std.) and three

more point is optionally available as follows.

Digital output DO1 (std.):

Output type: Transistor open collector Number of outputs: One point Output capacity : 30Vdc, 200mA maximum

Digital output DO2～DO4 (opt.)

(Added when 9

digit of specification code is “3”)

Out put type: Solidstate relay output (non polarity) Number of outputs: 3 points Output capacity: 150Vdc, 150mA maximum or

150Vac (peak to peak), 100mA maximum

DO functions—Four digital output function, either of the following functions can be selected.

• Totalizer pulse output

DO1 or DO2 can be selected (Forward direction pulse and reverse direction pulse can be assigned

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independently)

In the case of DO1

Pulse rate: 3.6 to 3,600,000 pulses/h

Pulse width:Settable within the range of 0.3 to

500ms

In the case of DO2

Pulse rate: 3.6 to 360,000 pulses/h

Pulse width: Settable within the range of 4 to

500ms

• Rage switching output 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

• High/low limit alarm output

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

• Preset point output

Contact ON when totalizer count exceeds the set value

Setting range: 1 to 99999999 count

• 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

Communications signal:

A digital communications (HART protocol) signal is superimposed on 4 to 20 mA dc analog output signal.

Load resistance: 240 Ω 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 1.25mm

is used

under standard installation condition.)

Note: HART (Highway Addressable Remote

Trans-ducer) is a communications protocol for industrial sensors recommended by the HCF (HART Commu-nication Foundation).

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.

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)

•Zero adjustment: Zero point adjustment can be started by pressing the switch in the converter.

•Digital communication: The AF 900 hand-held terminal is needed to set parameters.

•Damping: 0.5 to 60 s

(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 output and display will stay as follows when power fails..

Current output: 0 mA Digital output : OFF (contact open)

LCD display : No display

Surge protection: Surge protectors are installed in the

power supply, excitation circuit, current signal output and digital I/O circuit.

Terminal block structure:21-pole, screw connection

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 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/s

in 4h in each

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

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Installation

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Dimensions

Separate type LF502 (Meter size 6” and 8”)

3.46 (88)

1.57 (40)

1.42 (36)

Unit: inch (mm)

4.96 (126)

5.63 (143)

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 3 above, and the number of bolts required for each flange.

ANSI 150 flange dimensions:

Meter

Size (inch)

6 10.47 9.67 15.14 8 Approx.84 8 11.81 10.69 17.42 8 Approx. 194

(inch)

No. of

bolts

Weight

(lb)

JIS 10K flange dimensions:

Meter

Size (mm)

150 266 246 386 8 Approx. 35 200 300 271 436 12 Approx. 80

(mm)

No. of

bolts

Weight

(kg)

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Dimensions

Separate type LF502 (Meter size 10” to 24”)

3.46 (88)

1.57 (40)

11.81(300)

1.42 (36)

Unit: inch (mm)

4.96 (126)

5.63 (143)

Roll-prevention base

Figure 4. Detector Dimensions for Meter Sizes

10” (250 mm) to 24” (600 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.

ANSI 150 flange dimensions:

Meter

Size (inch)

10 13.78 12.05 20.05 12 263 12 15.75 12.95 22.45 12 318 14 17.72 13.74 24.24 12 359 16 19.69 15.12 26.87 16 476 20 23.62 16.42 30.17 20 527 24 23.62 18.46 34.46 20 701

(inch)

No. of

bolts

Weight

(lb)

JIS 10K flange dimensions:

Meter

Size (mm)

250 350 306 506 12 Approx. 110 300 400 329 551 16 Approx. 120 350 450 351 596 16 Approx. 130 400 500 386 666 16 Approx. 180 500 600 403 740 20 Approx. 190 600 600 455 852 24 Approx. 250

(mm)

No. of

Bolts

Weight

(kg)

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Dimensions

Signal cable ground

Grounding terminal

Excitation cable ground

9.33 (237)

8.74 (222)

2.91 (74)

2.99 (76)

4-φ12 hole

Output cable ground

1.57

(40)

2.17(55)

I/O cable ground

Weight : Approximately18 lb (8 kg)

6.10 (155)

15.75 (400)

Power supply cable ground

(including a mounting bracket)

TIC-LF502A

Installation method

据付方法

据付けは、パネル(壁面)取付けかパイプ取付けで行います。

指定された取付用ボルト・ナットが付属します。

In the case of 2B pipe installation

2Bパイプ取付けの場合

M10 U ボルト

M10 U bolts

14.57(370)

2B(50mm)パイプ

パネル取付穴加工寸法

2.91 (74)

11 to 12 φhole

11～12φ 穴 (4ヵ所)

4 places

370

14.57 (370)

400

15.75 (400)

Figure 5. Separate type converter LF232

＊

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(

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External Connections

Grounded with 100Ω o less ground resistance

Thick walled steel conduit

Signal cable (2-wire shielded hard-rubber sheathed cable)

Terminal box

Ⅳ wire

or more

5.5mm

(3-wire hard-rubber sheathed cable)

Detector

Power supply

CVV)

Power supply

Current output (4 to 20mA)

Digital input 2 (opt.)

Digital input 1 (opt.) (20 to 30 Vdc)

Digital output 4 (opt.)

Digital output 3 (opt.)

Digital output 2 (opt.)

Digital output

Excitation cable

Output cable (CVV-S)

Digital I/O cable

(CVV-S)

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Wiring Precautions

Figure 6. LF502/LF232*F flowmeter Wiring Diagram

(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.

(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 5.5mm

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

non-conductive like plastic, use a 5.5mm

or larger core cable for grounding of detector and wire 1 place as follows.

• 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.

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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.

Observation window

Upstream flange

Downstream flang

Bolt

Observatio window

Gasket

Flow directi

Figure 7. Flange Connection

(2) Required straight pipe length

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 valve etc.

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 8. Required Straight Pipe Length on

Upstream and Downstream Sides

TIC-LF502A

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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.

• 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.

(2) Where smoke and steam may occur.

(3) Where exposed to direct snow, ice or mud.

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Ordering Information

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: Actual flow calibration data:(Required or not)

6. Other items Specifications other than standard items

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Table 1. Specification Code for LF502 detector

Model Specification Code

1 2 3 4 5 6 7 8 9 10 11 12

L F 5 0 2 LF502 Electromagnetic flowmeter

Meter size K 6" (150mm ) L 8" (200mm ) M 10" (250mm ) N 12" (300mm ) P 14" (350mm ) Q

A Standard Connection flange standard C ANSI 150 J JIS 10K Lining C Chloroprene rubber D EPDM rubber T Teflon PFA

Electrode and Grounding Ring Material B 316L stainless steel + 316 stainless steel C Titanium + Titanium F Hastelloy C + Hastelloy C H 316L stainless steel + 304 stainless steel

C Black tar epoxy resin , thickness 0.3mm D Black tar epoxy resin , thickness 0.5mm

R S

16" (400mm )

20" (500mm )

24" (600mm )

Flow and calibration velocity range

A Standard range calibration

Coating

B Phthalic acid resin

E Black tar epoxy resin , thickness 0.5mm (for submersible type)

Description

Size

A B



 

   











    



 

   



Code explanation: : Standard : Option –: Not available

Size groups

A : 6” (150mm ) to 16” (400mm ) B : 20” (500mm ) and 24” (600mm )

Model Specification Code

1 2 3 4 5 6 7 8 9 10 11 12

L F 2 3 2

C E

Code explanation: : Standard : Option

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.

Table 2. Specification Code for LF232*F converter

Contents

Separate type converter

Purpose

Compatible detectors

Mounting nuts and bolts

Digital input/output

Current output

Communication function HART communication Power supply

Standard

For Partially-filled pipes (Meter size : 150mm(6”) to 600mm(24”) )

Panel, wall mounting (material : 304 stainless steel) Pipe mounting (material : 304 stainless steel)

+ Digital output points (1 point)

+ Digital output points (4 points) + Digital input points (2 points)

100Vac-120Vac, 50/60Hz

Specifications are subject to change without notice.

LF232

type



 







 

Printed in Japan 2008-5 (TDOC)

http://www.toshiba.com/ind

TIC-LF502A