Level measuring instruments and flow switchespdfs.findtheneedle.co.uk/36265.pdf · 2016. 3. 8. ·...

Level measuring instrumentsand flow switches

Introduction

TC Fluid Control are world revered for the design, manufacture

and sales of liquid level instrumentation products.

The company was established in 2003 having been part of the

UK business of Trouvay & Cauvin based in Le Havre France.

The instrumentation Division was originally founded in the UK

as Richard Klinger Ltd in 1933. In December 1999 Trouvay &

Cauvin Ltd acquired the Instrumentation Division which was

based in Sidcup and in 2002 the UK Management Team bought

out the UK side of the company.

In 2003 the Company was renamed to TC Fluid Control to give

focus for it to develop in the liquid level instrumentation field.

Ten years later, in 2013, TC Fluid Control became part of WIKA

Instruments Limited.

With a wealth of knowledge, derived from decades of focus in

Level Controls, our sales application engineers provide expert

advice on the correct choice of level instrument for any given

application. Our products are renowned for their precision,

quality and reliability and are used by process plant operators

throughout the world.

In addition to high quality product supply we are also highly

experienced in contractor projects and offer full documentary

facilities for the demands of project management.

2www.tc-fluidcontrol.com

Contents

High-precision level measurementLevel sensorsMagnetic float switchesFloat switchesOptoelectronic switchesSuspended float switchFlow monitorAccessoriesMagnetic level gaugesTechnical information

45678

1011121314


1010

Benefits � The simple and effective principle of operation is suitable

for a very wide range of applications � Continuous measurement of levels, independent of

physical and chemical changes of the liquid such as foaming, conductivity, dielectric, pressure, vacuum, temperature, vapours, condensation, bubble formation, boiling effects, density change

� Signal transmission over long distances � Simple installation and commissioning, onetime

calibration only, no recalibration necessary � Interface measurement and overall level from ∆ density

≥ 50 kg/m³ � Explosion-protected versions � Functional safety IEC 61508/IEC 61511, SIL-2 � Output signal: 4 … 20 mA, HART®

� Measuring accuracy ≤ 1 mm

For liquid media, employing the magnetostrictive measuring principle

High-precision level measurement

FLM-SStainless steel version

Process connection: ■ Mounting thread ■ Flange: DIN, ANSI

Guide tube length: Max. 6,000 mmPressure: 0 … 200 barTemperature: -90 … +450 °CDensity: ≥ 400 kg/m³Data sheet: LM 20.01

FLM-SPPlastic version

Process connection: ■ Mounting thread ■ Flange: DIN, ANSI


FLM-HHygienic version

Process connection: All common process connections with hygienic design

Guide tube length: Max. 6,000 mmPressure: 0 … 10 barTemperature: -40 … +250 °CDensity: > 715 kg/m³Data sheet: LM 20.03

For liquid media, employing the magnetostrictive measuring principle

High-precision level measurement


Continuous in-tank measurement

1111Further information at www.wika.com


For liquid media, utilising reed measuring chains

Benefits � The reliable and proven operation principle is suitable for

a very wide range of applications � Continuous measurement of levels, independent of

physical and chemical changes of the liquid such as foaming, conductivity, dielectric, pressure, vacuum, temperature, vapours, condensation, bubble formation, boiling effects, density change

� Signal transmission over long distances � Simple installation and commissioning, onetime

calibration only, no recalibration necessary � Interface measurement and overall level from ∆ density

≥ 50 kg/m³ � Explosion-protected versions � Output signal 4 … 20 mA, HART®, PROFIBUS® PA,

FOUNDATION™ Fieldbus � Resolution ≥ 5 mm

� Level displayed proportional to volume or height � In combination with limit switches, stepless setting of the

limit values possible over the entire measuring range � High repeatability accuracy of the set points � Cable and plug versions

Level sensors

FLR-SStainless steel version

Process connection: ■ Mounting thread ■ Flange: DIN, ANSI, EN


FLR-PPlastic version, PP, PVDF, PP

Process connection: ■ Mounting thread ■ Flange: DIN, ANSI, EN

Guide tube length: Max. 5,000 mmPressure: 0 … 3 barTemperature: -10 … +100 °CDensity: ≥ 800 kg/m3

Data sheet: LM 20.02

FLR-HHygienic version




www.tc-fluidcontrol.com

For liquid media, utilising reed measuring chains

Level sensors


5

1212

Sturdy switches for liquid media

Magnetic float switches

FLS-SStainless steel version, for vertical installation

Switch points: Max. 8 switch pointsProcess connection: ■ Mounting thread

■ Flange: DIN, ANSI, ENGuide tube length: Max. 6,000 mmPressure: 0 … 100 barTemperature: -196 … +300 °CDensity: ≥ 390 kg/m³Data sheet: LM 30.01

FLS-PPlastic version, for vertical installation

Switch points: Max. 8 switch pointsProcess connection: ■ Mounting thread

■ Flange: DIN, ANSI, ENGuide tube length: Max. 5,000 mmPressure: 0 … 3 barTemperature: -10 … +100 °CDensity: ≥ 400 kg/m³Data sheet: LM 30.01

ELSFor lateral mounting

Reference chamber: Aluminium, red bronze, stainless steelProcess connection: Threaded pipe connection GE10-LR

galvanised steelPressure: Up to 6 barTemperature: -30 … +300 °CData sheet: LM 30.03

FLS-HHygienic version




Switches for liquid media

Magnetic float switches


Measurement of switch points in the tank


LSD-30Electronic level switch, with display

Measuring range: Sensor length 250, 370, 410, 520, 730 mmDensity: ≥ 0.7 g/cm3 (NBR float)Switching output: ■ 1 or 2 (PNP or NPN)

■ Analogue output (optional)Process connection: G ¾ A, ¾ NPTData sheet: LM 40.01

HLS-M1Plastic version, with cable outlet

Process connection: ■ ½" NPT (installation in the tank from outside)

■ G ¼" (installation in the tank from inside)Pressure: 1 barTemperature: -10 … +80 °CMaterial: PPElectrical connection: CableData sheet: LM 30.06

HLS-SStainless steel version, for horizontal installation

Process connection: Flange: DIN, ANSI, ENPressure: 0 … 232 barTemperature: -196 … +350 °CDensity: ≥ 600 kg/m³Material: Stainless steel, titaniumData sheet: LM 30.02

HLS-M2Stainless steel version, with cable outlet

Process connection: ■ ½" NPT (installation in the tank from outside)

■ G ¼" (installation in the tank from inside)Pressure: 5 barTemperature: -40 … +120 °CMaterial: Stainless steel 1.4301Electrical connection: Cable or connectorData sheet: LM 30.06

HLS-PPlastic version, for horizontal installation

Process connection: Flange: DIN, ANSI, ENPressure: 0 … 3 barTemperature: -10 … +80 °CDensity: ≥ 750 kg/m³Material: PPData sheet: LM 30.02


TSD-30

PSD-30



Float switches

7

1414

For applications with limited mounting space

Optoelectronic switches

Benefits � Recording of the level with

the cone tip is independent to a large extent of the physical characteristics of the liquids such as density, dielectric constant, conductivity, colour and refractive index

� Detection of interface layers with rounded tip (switch OLS-S)

� The extremely compact design guarantees minimum space requirements and measurement in very small volumes

Level Interface layer

Operating principle

OLS-C20High-pressure version

Material: Stainless steel, quartz glassProcess connection: ■ M16 x 1.5

■ G ½ A ■ ½ NPT

Insertion length: 24 mmPressure: 0 … 50 barTemperature: -30 … +140 °CData sheet: LM 31.02

OLS-S, OLS-HStandard version ,High-pressure version

Material: Stainless steel, Hastelloy, KM-glass, quartz glass, sapphire, graphite

Process connection: ■ G ½ A ■ ½ NPT

Pressure: 0 … 500 barTemperature: -269 … +400 °CApproval: EX i, overflow control per WHG § 19Data sheet: LM 31.01

OSA-SSwitching amplifier, for models OLS-S, OLS-H

Output: 1 signal relay, 1 failure relayFunction: High or low alarmTime delay: Up to 8 sVoltage supply: AC 24/115/120/230 V

DC 24 VApproval: EX i, overflow control per WHG § 19Data sheet: LM 31.01

For applications with compact mounting space






OLS-C01OEM level switch, compact design, standard version

Material: Stainless steel, borosilicate glassProcess connection: G 3/8", G 1/2" or M12 x 1Pressure: Max. 10 barTemperature: -30 … +100 °CData sheet: LM 31.31

OLS-C05OEM level switch, compact design, high-pressure version

Material: Stainless steel, borosilicate glassProcess connection: G 1/2"Pressure: Max. 25 barTemperature: -40 … +150 °CData sheet: LM 31.33

OLS-C05Compact design, refrigerant version, with relay output

Material: Stainless steel, borosilicate glassProcess connection: G 1/2", NPT ½, M20 x 1,5Pressure: Max. 42 barTemperature: -30 … +120 °CData sheet: LM 31.03

OLS-C05Compact design,explosion-protected version

Material: Stainless steel, borosilicate glassProcess connection: G 1/2"Pressure: Max. 20 barTemperature: -30 … +135 °CApproval: EX i, overflow control per WHG § 19Data sheet: LM 31.04

OLS-C02OEM level switch, compact design, with selectable switch length

Material: Stainless steel, borosilicate glassProcess connection: G 1/2"Pressure: Max. 25 barTemperature: -30 … +100 °CSwitch length: 65 … 3,000 mmData sheet: LM 31.32

OLS-C04OEM level switch, ompact design, refrigerant version, with transistor output

Material: Steel, nickel-plated; glassProcess connection: G 1/2", ½" NPTPressure: Max. 40 barTemperature: -40 … +100 °CData sheet: LM 31.34

www.tc-fluidcontrol.com9

For applications with compact mounting space



WIKA data sheet LM 32.01

Page 1 of 2WIKA data sheet LM 32.01 ∙ 11/2014

Suspended float switchModel SLS

Suspended float switchFig. left: Model SLS-M2Fig. centre: Model SLS-MS1Fig. right: Model SLS-MS1-Ex

Applications

■ Wastewater treatment plants ■ Pumping stations

Special features

■ Suitable for sewage, wastewater and fluids containing solid matter

■ Environmentally friendly, since it is mercury and lead-free ■ Groundwater neutral PP case ■ Long mechanical and electrical service life of the micro

switch ■ Also suitable for use in Ex zones 0, 1 and 2

Description

Suspended float switches are attached to a highly flexib-le cable hanging from above and contain a micro switch, which is potted and enclosed, shock and fracture-proof, in a double-chamber system. When the float body is immersed in a liquid, the float bulb tips and triggers the micro switch.

With the MS1 model range, a stabilisation weight is also built in, so that this switch is also suited for greater solids contents.

One suspended float switch is required for each switch point. The contact is designed as a change-over contact, so that it can be configured as a high alarm as well as a low alarm.

Through the patented, centrically mounted micro switch, the suspended float switch can switch in any direction, and not dependent on the direction in which the switch tips.

Level measurement

www.tc-fluidcontrol.com10

Suspended float switchModel SLS

Measurement of switch point in the tank

Flow monitorFor monitoring the flow of liquid and gaseous mediaModel FWS

Selection of different model FWS flow monitors

Applications

■ Continuous flow indication without power supply ■ Thirteen different versions and corrosion resistant

materials make the products suitable for a broad range of applications

■ Machine building, chemical industry, pharmaceutical industry, medical engineering

■ Cooling systems and cooling circuits, transformers, central lubrication systems and recirculating oil lubrication systems

■ Research and development

Special features

■ High switching accuracy and functional safety ■ Large switching range, low switch hysteresis ■ Continuous switch point setting by the operator ■ Viscosity compensated models available ■ Explosion-protected versions

DescriptionThe model FWS flow monitors are used for the display and monitoring of the flow of liquid and gaseous media, e.g. in cooling systems and cooling circuits of welding machinery, laser and piping systems, dosing systems, pumps, compressors, hydraulic systems, high-pressure plants and many more.

The flow monitors operate in accordance with the float-body measuring principle. A float body is guided within a cylindrical slotted nozzle or in a cylindrical measuring tube. A reed contact is mounted outside of the flow circuit.

Flow measurement

The reed contact is cast into a continuously adjustable case (switch case) and thus is protected from external influences.

The flowing medium moves the float body in the direction of the flow. When the float body, with its integrated magnet, reaches the position of the reed switch, this closes. When the flow rate rises, the float body moves further in the direction of the flow, maximally until it reaches a stop. This stop prevents the float body from being driven beyond the switching range of the reed switch (bistable characteristic).

Page 1 of 28WIKA data sheet FL 30.01 ∙ 12/2014

WIKA data sheet FL 30.01


Flow measurement

Flow monitor

Model FWSFor monitoring the flow of liquid and gaseous media

1818 Other versions on request.

Accessories

Accessories

Transmitter

■ Compact design ■ Simple mounting ■ High accuracy (0.05 %) ■ EMC resistant ■ EEx ia IIC variant available

Limit value signal transmitter

■ 1 or 2 limit values act on 2 output relays ■ Test jacks for switch point (limit value/actual value) ■ High or low alarm can be set ■ Hysteresis from 0 … 60 % of measuring range can be set ■ EMC per NAMUR NE21

Transmitter indicator

■ Compact design ■ Simple mounting ■ High accuracy (output 0.2 %, input 0.05 %) ■ EMC resistant ■ Field case IP 65 available

Contact protection relay

■ 2-channel ■ 1 potential-free relay output per channel ■ Switching state indication (yellow LED) ■ Effective direction reversible ■ Cable break monitoring (red LED) ■ Control circuits Ex ia


Accessories

Accessories

Used throughout the world within a vast range of industries the TC

Fluid Control range of Magnetic Level Gauges is particularly suited to

applications where hazardous liquids or gases are in use. All of these

instruments are made to order and our engineers will provide expert

guidance on the design and manufacture of Magnetic Level Gauges

for specific applications.

Magnetic level gauges


14www.tc-fluidcontrol.com 19

Technical information

1 Wire2 Sensor electronics3 Magnetic field4 Magnet5 Torsional wave

Bypass level indicator The magnetic field of the radial-symmetric magnetic system positioned in the float at submersion height activates the magnetic indicator attached to the outside of the bypass chamber as well as the switching and measuring elements.

Magnetic float switchA float with a built-in magnetic system moves, with the level of the medium to be measured, on a guide tube which has one or more reed switch contacts built into it. The magnet actuates the contacts at the pre-set switching heights and thus allows individual levels to be monitored. The simple and proven operation principle is suitable for a very wide range of applications. It works independently of foaming, conductivity, dielectric, pressure, vacuum, temperature, vapours, condensation, bubble formation, boiling effects and vibrations.

Level sensorThese level sensors work on the float principle with magnetic transmission.The float's magnetic system in the guide tube actuates a resistance measuring chain that corresponds to a 3-wire potentiometer circuit. The measurement voltage generated by this is proportional to the fill level and finely-stepped as a result of the contact separation of the measuring chain and is thus virtually continuous. Resolutions between 5 and 18 mm are available depending on the requirements.

Magnetostrictive level measurementThese level sensors are used as measured value pick-ups for the continuous recording of liquid levels, and are based on determining the position of a magnetic float according to the magnetostrictive principle.

The measuring process is triggered by a current impulse.This current produces a circular magnetic field (3) along a wire (1) made of magnetostrictive material fixed in the probe tube. At the point being measured (liquid level) there is a float with permanent magnets (4) acting as a position transducer. This magnetic field of the float tensions the wire. The superposition of these two magnetic fields triggers a mechanical wave (5) in the wire. This is converted into an electrical signal at the end of the wire in the sensor housing (2) by a piezoceramic converter. The measured propagation delay enables the origination point of the mechanical wave, and thus the float position, to be determined with high accuracy.

brown blue blackInternal circuit diagramResistance measuring chain

Technical information

World leading liquid measuring instruments

TC Fluid Control Head OfficeUnit 4 The Interchange, Wested LaneSwanley, Kent BR8 8TETel: +44 (0) 1322 622 400 Fax: +44 (0)1322 660 621 Email: [email protected]


Scotland office:Office 1/05, King James Business Centre, Friarton Road, Perth PH2 8DYTel: +44 (0) 1738 472 015 Fax: +44 (0)1322 660 621 Email: [email protected]

15


TC Fluid ControlUnit 4 The InterchangeWested LaneSwanleyKent BR8 8TE

Tel: +44 (0) 1322 622400Fax: +44 (0)1322 660621Email: [email protected]

Scotland office:Office 1/05King James Business CentreFriarton Road Perth PH2 8DY

Tel: +44 (0) 1738 472015Fax: +44 (0)1322 660621Email: [email protected]

Level measuring instruments and flow switchespdfs.findtheneedle.co.uk/36265.pdf · 2016. 3. 8. ·...

Documents

Transcript of Level measuring instruments and flow switchespdfs.findtheneedle.co.uk/36265.pdf · 2016. 3. 8. ·...