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MLG Instruments An ISO 9001 – 2008 company

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Magnetic Level Gauges

Type MLA, MLB, MLD, MLC

Operating Priciple of Magnetic level gauges * Archimede's principle indicates that the upward buoyant force that is exerted on a body immersed in a fluid, whether fully or partially submerged, is equal to the weight of the fluid that the body displaced* Working principle whereby the liquid in by‐pass chamber is always the same level * Magnetically communication between float and display magnets (flappers, roller of shuttle type)

Applications * Offshore* (Petro) chemical plants * Gas installations * Power Plants * Water Purification plants * Hospitals * Horticulture (steamboiler)

Technical information * Liquid and gas applications * Chemically aggrasive media * Inflammable or explosive media * Interface applications (seperate line 2 different media) * Low specific grafity (< 250 kg/m3) * Low and high pressure ( vacuum till 100 barg) * Low and high temprature (‐50°C + 400°C) * With steam jacket

Options * Plastic PVC, PE, PP and PVDF * Alloy 20 * Hastelloy B 276 * Monel * Titanium * PTFE, Halar lined (Not for ATEX application)

Certificates & calculation General technical information * Material certificates acc. EN10204 3.1 * Standard 2" Tube welded with flanges or screwed * Hydrotest certificate connections acc. customers specifications * Nace MR0175 (hardness requirements test) * Centre to centre dimension (CCD) is the area that * PMI (Positive Material Identification) represent the mesuring zone * PED certificate 97/23/EG (NoBo Bureau Veritas CE1117) * The float is hermatically sealed , designed acc. * X‐ray (Radiographic examination) customer process specification * Liquid Dyne Penetrant test * Indication rail available with Flappers, Rollers or * Marine approval (third party) Shuffle type * ATEX CE 0344 II2 GD IIB T6 T85° (NEN EN 13463-1) * SS Scale into in mm, cm, litre or inch * Calculation acc. EN‐13455 (DIN process connections) * Reed Switches available in Stainless steel or Aluminium * Calculation acc. ASME VIII div1 (ASME process connections) Junction boxes

* Transmitter 4‐20 mA output signal

MLG Instruments ‐ The Netherlands ‐ email i info@mlg‐instruments.com ‐ tel: +31(0) 10 473 50 50

MLG Instruments

MLG Instruments | Olivier van Noortstraat 1| 3124LA Schiedam| the Netherlands www.mlg-instruments.com | [email protected] | Call: +31 (0)10 473 50 50

CONTENTS Page Construction, operation and features 1 – 4 Magnetic level gauges 1 Reflex Level Gauges 2 Transparent Level Gauges 3 Glass Level Gauges 3 Bilge level Switches 4

Magnetic Level Indicators Model MLB-M10 and MLB-M150 (Compact design, 2- side connections up to 10 barg) 5 Model MLA-10 and MLA-150 (1-side connection, up to 10 barg) 6 Model MLB-10 and MLB-150 (2-side connections up to 10 barg) 7 Model MLB-16 and MLB-150A (2-side connections up to 16 barg) 8 Model MLB-40 and MLB-40 (2 side connections up to 40 barg) 9 Model MLB-LV10 and MLB-LV150 (2 side connections up to 10 barg and 17 meters) 10 Model MLC-40 and MLB-300 (Inline connections between 2 pipes, up to 40 barg) 11 Model MLD-40 and MLD-300 (Top mounted level indicator above a tank) 12 Glass Level Indicators & Bilge switches Model TLG-40, TLG-64, TLG-100, TLG-300, TLG-600, TLG-900 (Transparent level gauge, up to 100 barg) 13 Model RLG-40, RLG-64, RLG-100, RLG-300, RLG-600, RLG-900 (Reflex level gauge, up to 100 barg) 14 Model GLG-BRTH, GLG-SSTH, GLG-SSFL (Tubular -Glass level gauge, Brass and Stainless steel, up to 10 barg) 15 Model BLS (Bilge Level Switch) (Mounted on wall or on a pipe) 16 Electronic devices for Magnetic Level Gauges Magnetically actuated reed switches 17 Model VRP – Transmitter 4 – 20mA (Vertical mounted reed probe) 18 Technical information Magnetic float overview & Temperature table 19

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MLG Instruments


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Magnetic Level Gauges Magnetic Level Indicators are used in applications requiring continuous measurement, indication and control of liquid levels. The design relies on the hydrostatic pressure principle to display tank level in a side mounted measuring chamber. A float, containing a magnet, rises and falls with the liquid level in the bypass chamber. This approach allows an all metal Construction which eliminates the breakage and leakage problems frequently experienced with glass tube designs. Transmission, Visual indication or Switches is achieved by mounting magnetically sensitive devices on the exterior of the bypass chamber. These devices track or are activated by the magnet inside the float. Construction and Operation The Communicating bypass chamber is mounted with flanges to the side or top of a vessel. The float rises and falls with the liquid in the tank (refer fig.0). The chamber is completely sealed so that the moving part of the apparatus in contact with the liquid is the float itself. On the dry side of the chamber there is the magnetic display consisting of a column with flappers which are white on one side and red on the other. Flappers are made from Stainless steel with a distance of 10mm between their axes. As the float moves up or down the bunched field of the permanent magnet in its top suction pulls the flappers rotation of 180°, thus changing their colour. As the float rises the flappers are turned from the white to red, and as the float falls, they are changed back to white again. This means that at any given time the amount of liquid is constantly represented by a red column without any external power supply.

Applications • Chemical and petrochemical industries. • Energy and power plant technology. • Feed water heaters or boilers • Oil and gas industries • Offshore exploration and drilling. • Pipeline compressor applications. • Pulp and paper. • Food and beverage. • Gas Plants.

FEATURES Non Materials • Circular Magnet System effective from all sides - Pressure Equipment Directive (PED/CE) CE1117 • Up to 40 bar pressure (standard) - Atex II 2 GD IIB T6 T85°C • Temperatures up to 400°C (with insulation) - Type approval (Bureau Veritas) • Temperatures up to – 50 °C (with insulation) - Material certificate acc. 10204 3.1 • Remote Transmission Capability - Hydrotest certificate by MLG Instruments • Permanent Local Indication without - Positive Material Identification (PMI) external power supply - Marine approval (third party) • Switching and transmitting options available - Hardness test (NACE MR0175) • Industrial Ruggedness - Radiographic Examination ((X-Ray) • Chamber and float into PTFE/PFQ lined, PVC, PP, PVDF (NON- ATEX) - Design Acc. to EN-13455 and ASME VIII div.1 • Simple, breakproof, maintenance free construction • No corrosion possible of the indicator system • Perfect solution for interface applications



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Reflex Level Gauges The principle of Reflex Level Gauges is based on the difference in the refractive indices of liquid and vapor. The liquid column is contained within the recess of the liquid chamber behind the sight glass, which is clamped to the gauge body. The sight glass has prismatic right-angled grooves on the side facing the liquid and vapor space. Light rays entering from outside the gauge are either absorbed or reflected depending upon whether they enter the liquid or vapor space. When the ray of light encounters the surface of one of the grooves in the vapor space, it is reflected to the opposite surface of the grooves and from there, totally reflected back to the direction of observation. Thus, vapor space appears as silvery white. When the light ray encounters the surface of the grooves in the liquid space, it is totally absorbed; thereby making the liquid behind the glass appears black. These gauges are used for measuring the level in a vessel. Maximum pressure of up to 250 bar and a maximum temperature of 350°C. The different brightness in the two zones is obtained as explained below:

Liquid Zone This zone appears quite dark when the gauge is in operation and lighted. Given the construction, most of the environmental light rays incident on the external face of the glass are quite perpendicular to said face and, therefore, not deviated by the glass. These rays reach the glass/liquid interface with an inclination of approx. 45°. The critical angle glass/liquid is always superior to 45°. Therefore the rays incident within the critical angle (practically the totality) are refracted within the liquid and, since the internal walls of the gauge chamber are not reflecting, the rays cannot be seen from the outside. In fact the zone will appear dark, nearly black, to the observer.

Gas / Vapor Zone This zone appears almost silver bright to the observer. As for the liquid zone, the light rays reach the glass/ gas-vapor interface with an angle around 45°. Since this angle is greater than glass/gas-vapor critical angle, the rays are not refracted, but totally reflected making 90° turn, thus reaching the nearest glass/gas-vapor interface again with angle of 45°. For same reason they will be reflected and turned by 90° towards the observer, to whom the zone will appear silver bright. Applications • Chemical and petrochemical industries. • Energy and power plant technology. • Feed water heaters or boilers • Oil and gas industries • Offshore exploration and drilling. • Pipeline compressor applications. • Pulp and paper. • Food and beverage. • Gas Plants.



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Transparent Level Gauges Transparent level gauges are fitted with two plate transparent glasses between which the fluid is contained. The fluid level is indicated as the result of the different transparency of the two media and in some cases (for water steam), by conveying upwards on to the surface of separation (between liquid and gaseous substances) a source of light located at the back of the gauge, the rays of which are totally reflected down to the observer. The Transparent Level Gauge consists of a metal body, machined to have an internal chamber and one or more front windows (on each side of the gauge). On each window a special high resistance plate transparent glass is applied with sealing joint and metal cover plate hold by bolts and nuts. The chamber is connected to vessel with cross fittings and flanged, threaded or welded ends. Usually, between the instrument and its connecting ends, valves are fitted to allow shut-off piping and to disassemble the level gauge without having to empty the vessel. Drain valves can also be fitted to cross fittings of the device. To avoid leakage in case of glass breakage, safety ball-check device can be provided in cross-fittings or shut-off valves. This kind of indicator is suitable for water/steam. To protect glass surfaces from corrosive action of the process fluid, Transparent Level Gauges can be fitted with Mica shields or PFCE/PTFE/6 shields. This kind of indicator is suitable for colorless liquids and very fluid Applications • Chemical and petrochemical industries. • Energy and power plant technology. • Feed water heaters or boilers • Oil and gas industries • Offshore exploration and drilling. • Pipeline compressor applications. • Pulp and paper. • Food and beverage. • Gas Plants.

Tubular – Glass Level Gauges Tubular level gauges are simple in construction and reliable in operation for direct visual verification of level in vented or lightly pressurized tanks. The tubular communication bypass level gauge is mounted to the side of the vessel. If the media inside the vessel rises or falls the media is clearly visible through the hardened glass or industrial plastic (polycarbonate).



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Bilge Level Switches Bilge level switches are a safety critical component for the detection of liquid in dead spaces, voids and sumps that are rarely visited or inspected by the crew. They need to be able to withstand years of installation in difficult environmental conditions, yet operate immediately and reliably to indicate rising liquid level, a leakage or flooding hazard. The switch is corrosion resistant stainless steel fully submersible construction with a hermetically sealed SPDT reed switch potted in epoxy. The switch is also designed with a manual lift test mechanism, which can be used to check switch operation. Application: The Bilge Switch is designed to be installed in ship’s bilges and tanks, industrial sumps and tanks where it would be bolted at the required alarm level. FEATURES • Compact design • Simple installation • Fully submersible 68 • Cable resistant to offshore application • Full SS316L (1.4404) • Marine approval • Simple installation • Test Lever



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Bilge level switch connected to a level controller

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Pipe mounted or wall mounted

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Model Compact design, 2- side connections up to 10 barg MLB-M10 (Acc. to EN/DIN/IS0) MLB-M150 (Acc. to ANSI) Process specification Working pressure max. : 10 barg (145 psi) Process temperature : - 10°C to + 160°C Density : min. 800 kg/m3 Standard material specifications 1) Tube ODØ40 x WT 2mm : SS316L (1.4404) 2) Process connections : SS316L (1.4404) 3) Plug ½” BSPT or ½” NPT : SS316L (1.4404) 4) Top cap : SS316L (1.4404) 5) Indicator Flappers red/white : SS316L (1.4404) 6) Bottom Flange : SS316L (1.4404) 7) Drain Flange : SS316L (1.4404) 8) Float : SS316Ti (1.4571) 9) Gasket : Graphite or Aramide15) 10) Bolts, nuts and washers : SS304L (1.4104) Dimensions (mm) A = 200 B = min. 200 < 2000 C = 70 D = see table 1

Diameter EN (DIN) Flanges11)

ASME (ANSI) Flanges12) BSPTM13) NPTM14)

DN15 - 1/2" 58 66 71 71 DN20 - 3/4" 62 73 71 71 DN25 - 1" 62 76 73 73

Table 1 Options:

• Drain and vent valves • PTFE gasket • Isolation valves • SS Scale • Switches (SPDT or SPST) • Transmitter 4-20 mA with local display • Insulation Glassfiber (hot applications to + 400°) • Insulation Armaflex (cold application - 50°C) • Damping springs • Process connections with RTJ Flanges

11) Flange dimension acc. to EN1092-1 type 11 PN10/16/40 12) Flange dimension acc. to ASME B16.5 150#RF 13) Thread connection acc. to ISO 7-1R 14) Thread connection acc. to ASME B16.11 15) Depending on the pressure/temperature rating and chemical resistance of the media

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Model 1-side connection, up to 10 barg MLA-10 (Acc. to EN/DIN/ISO)

MLA-150 (Acc. to ANSI) Process specification Working pressure max. : 10 barg (145 psi) Process temperature : - 50°C to + 400°C17) Specific gravity (S.G.) : min. 700 kg/m3 Standard material specifications 1) Tube ODØ60, 3 x 2mm : SS316L (1.4404) 2) Process connections : SS316L (1.4404) 3) Plug ½” BSPT or ½” NPT : SS316L (1.4404) 4) Top cap : SS316L (1.4404) 5) Indicator Flappers red/white : SS316L (1.4404) 6) Bottom Flange : SS316L (1.4404) 7) Drain Flange : SS316L (1.4404) 8) Float : SS316Ti (1.4571) 9) Gasket : Graphite or Aramide16) 10) Support plate : SS316L (1.4404) 11) Bolts, nuts and washers : SS304L (1.4104) Dimensions (mm) A = 200 B = min. 200 to max. < 5700 C = 80 D = see table 2



DN15 - 1/2" 68 76 81 81 DN20 - 3/4" 72 83 82 82 DN25 - 1" 72 86 82 82 DN40- 11/2" 78 92 83 83

Table 2 Options:

• Chamber materials lined; 304L, PVC, PP, PVDF, Halar coated or PTFE lined (NON Atex) • Drain and vent valves • PTFE gasket • SS316L Scale (CM, % or inches) • Switches (SPDT or SPST) • Transmitter 4-20 mA with local display • Insulation Glassfiber (hot applications to + 400°) • Insulation Armaflex (cold application till - 50°C) • Damping springs • Float materials; Titanium, Inconel or Monel 400 • Steam Jacket or heat tracing • Process connections with RTJ Flanges

12) Flange dimension acc. to EN1092-1 type 11 PN10/16/40 < DN40 on request 13) Flange dimension acc. to ASME B16.5 150#RF 14) Thread connection acc. to ISO 7-1R 15) Thread connection acc. to ASME B16.11

16) Depending on the pressure/temperature rating and chemical resistance of the media 17) For Atex zone maximum temperature of < 360°C

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Model 2-side connections up to 10 barg MLB-10 (Acc. to EN/DIN/ISO)

MLB-150A (Acc. to ANSI)

Process specification Working pressure max. : 10 barg (145 psi) Process temperature : -50°C to + 400°C17) Specific gravity (S.G.) : min. 700 kg/m3 Standard material specifications 1) Tube ODØ60, 3 x 2mm : SS316L (1.4404) 2) Process connections : SS316L (1.4404) 3) Plug ½” BSPT or ½” NPT : SS316L (1.4404) 4) Top cap : SS316L (1.4404) 5) Indicator Flappers red/white : SS316L (1.4404) 6) Bottom Flange : SS316L (1.4404) 7) Drain Flange : SS316L (1.4404) 8) Float : SS316Ti (1.4571) 9) Gasket : Graphite or Aramide16) 10) Bolts and washers : SS304L (1.4104) Dimensions (mm) A = 200 standard18) B = min. 200 to max. < 5700 C = 80 D = see table 3



DN15 - 1/2" 68 76 81 81 DN20 - 3/4" 72 83 82 82 DN25 - 1" 72 86 82 82 DN40- 11/2" 78 92 83 83

Table 3

Options: • Chamber materials lined; 304L, PVC, PP, PVDF, Halar coated or PTFE lined (NON-ATEX) • Float materials; Titanium, Inconel or Monel 400 • Isolation valves • SS316L Scale (CM, % or inches) • Switches (SPDT or SPST) • Transmitter 4-20 mA 2 wires • Transmitter 4-20 mA with local Display • Insulation Glassfiber (hot applications to + 400°) • Insulation Armaflex (cold application -50°C) • Damping springs • PTFE gasket • Steam Jacket or heat tracing • Process connections with RTJ Flanges

12) Flange dimension acc. to EN1092-1 type 11 PN10/16/40 < DN40 on request 13) Flange dimension acc. to ASME B16.5 150#RF 14) Thread connection acc. ISO 7-1R 15) Thread connection acc. ASME B16.11 16) Depending on the pressure/temperature rating and chemical resistance of the media 17) For Atex zone maximum temperature of < 360°C 18) Possible from 140mm, depends on the specific gravity

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Model 2-side connections up to 16 barg MLB-16 (Acc. to EN/DIN/ISO)

MLB-150B (Acc. to ANSI)

Process specification Working pressure max. : 16 barg (232 psi) Process temperature : -50°C to + 400°C17) Specific gravity (S.G.) : min. 700 kg/m3 Standard material specifications 1) Tube ODØ60, 3 x 2mm : SS316L (1.4404) 2) Process connections : SS316L (1.4404) 3) Plug ½” BSPT or ½” NPT : SS316L (1.4404) 4) Top cap : SS316L (1.4404) 5) Indicator Flappers red/white : SS316L (1.4404) 6) Bottom Flange : SS316L (1.4404) 7) Drain Flange : SS316L (1.4404) 8) Float : SS316Ti (1.4571) 9) Gasket : Graphite or Aramide16)

10) Bolts and washers : SS304L (1.4104) Dimensions (mm) A = 200 standard18) B = min. 200 to max. < 5700 C = 80 D = see table 3



DN15 - 1/2" 68 76 81 81 DN20 - 3/4" 72 83 82 82 DN25 - 1" 72 86 82 82 DN40- 11/2" 78 92 83 83

Table 3

Options: • Chamber materials lined; 304L, PVC, PP, PVDF, Halar coated or PTFE lined (NON-ATEX) • Float materials; Titanium, Inconel or Monel 400 • Isolation valves • SS316L Scale (CM, % or inches) • Switches (SPDT or SPST) • Transmitter 4-20 mA 2 wires • Transmitter 4-20 mA with local Display • Insulation Glassfiber (hot applications to + 400°) • Insulation Armaflex (cold application to -50°C) • Damping springs • PTFE gasket • Steam Jacket or heat tracing • Process connections with RTJ Flanges

12) Flange dimension acc. to EN1092-1 type 11 PN10/16/40 < DN40 on request 13) Flange dimension acc. to ASME B16.5 150#RF 14) Thread connection acc. to ISO 7-1R 15) Thread connection acc. to ASME B16.11 16) Depending on the pressure/temperature rating and chemical resistance of the media 17) For Atex zone maximum temperature of < 360°C 18) Possible from 140mm, depends on the specific gravity

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Model 2 side connections up to 40 barg MLB-40 (Acc. to EN/DIN/ISO)

MLB-300 (Acc. to ANSI)

Process specification Working pressure max. : 40 barg18) (580 psi Process temperature : -50°C to + 400°C16) Specific gravity (S.G.) : min. 700 kg/m3 Standard material specifications 1) Tube ODØ60, 3 x 2mm : SS316L (1.4404) 2) Process connections : SS316L (1.4404) 3) Plug ½” BSPT or ½” NPT : SS316L (1.4404) 4) Top cap : SS316L (1.4404) 5) Indicator Flappers red/white : SS316L (1.4404) 6) Bottom Flange : SS316L (1.4404) 7) Drain Flange : SS316L (1.4404) 8) Float : SS316Ti (1.4571) 9) Gasket : Graphite or Aramide15) 10) Bolts and washers : SS304L (1.4104) Dimensions (mm) A = 200 standard17) B = min. 200 to max. < 5700 C = 80 D = see table 4


ASME (ANSI) Flanges13) NPTM14)

DN15 - 1/2" 68 76 81 DN20 - 3/4" 72 88 82 DN25 - 1" 72 92 82 DN40 - 11/2" 78 100 83

Table 4 Options:

• Chamber materials lined; 304L, PVC, PP, PVDF, Halar coated or PTFE lined (NON -ATEX) • Float materials; titanium, Inconel or Monel 400 • Isolation valves • SS316L Scale into (CM, % or inches) • Switches (SPDT or SPST) • Transmitter 4-20 mA 2 wires • Transmitter 4-20 mA with local Display • Insulation Glassfiber (hot applications to + 400°) • Insulation Armaflex (cold application -50°C) • Damping springs • PTFE gasket • Steam Jacket or heat tracing

12) Flange dimension acc. to EN1092-1 type 11 PN10/16/40 < DN40 on request 13) Flange dimension acc. to ASME B16.5 300#RF 14) Thread connection acc. to ASME B16.11 15) Depending on the pressure/temperature rating and chemical resistance of the media 16) For Atex zone maximum temperature of < 360°C 17) Possible from 140mm, depends on the specific gravity 18) Higher pressure request,

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Model 2 side connections up to 10 barg and 17 meters MLB-LV10 (Acc. to EN/DIN/ISO)

MLB-LV150 (Acc. to ANSI)

Process specification Working pressure max. : 10 barg (145 psi) Process temperature : -50°C to + 400°C13) Specific gravity (S.G.) : min. 700 kg/m3 Standard material specifications 1) Tube ODØ60, 3 x 2mm : SS316L (1.4404) 2) Process connections : SS316L (1.4404) 3) Plug ½” BSPT or ½” NPT : SS316L (1.4404) 4) Top cap : SS316L (1.4404) 5) Indicator red/white flappers : SS316L (1.4404) 6) Bottom Flange : SS316L (1.4404) 7) Drain Flange : SS316L (1.4404) 8) Float : SS316Ti (1.4571) 9) Gasket : Graphite or Aramide 10) Bolts and washers : SS304L (1.4104) Dimensions (mm) A = 200 standard15) B = min. 200 to max. 17000 C = 80 D = see table 5

E = special F = special G = Special

Flange diameter EN (DIN) Flanges11)

ASME (ANSI) Flanges12)

DN20 - 3/4" 72 83 DN25 - 1" 72 86 DN40 - 11/2" 78 92

Table 5 Options:

• Chamber materials lined; 304L, PVC, PP, PVDF, Halar coated or PTFE lined (NON-ATX) • Float materials; titanium, Inconel or Monel 400 • SS316L Isolation valves • SS316L Scale (CM, % or inches) • Switches (SPDT or SPST) • Transmitter 4-20 mA with local display • Insulation Glassfiber (hot applications to + 400°) • Insulation Armaflex (cold application -50°C) • Damping springs • PTFE gasket • Steam Jacket

11) Flange dimension acc. to EN1092-1 type 11 PN10/16/40 < DN40 on request 12) Flange dimension acc. to ASME B16.5 150# 13) For Atex zone maximum temperature of < 360°C 14) Depending on the pressure/temperature rating and chemical resistance of the media 15) Possible from 140mm, depends on the specific gravity

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Model Inline connections between 2 pipes, up to 40 barg MLC-40 (Acc. to EN/DIN/ISO)

MLC-300 (Acc. to ANSI)

Process specification Working pressure max. : 40 barg (580 psi) Process temperature : -50°C to + 400°C10) Specific gravity (S.G.) : min. 700 kg/m3 Standard material specifications 1) Tube ODØ60, 3 x 2mm : SS316L (1.4404) 2) Process connection : SS316L (1.4404) 3) Indicator Flappers red/white : SS316L (1.4404) 4) Body Flange : SS316L (1.4404) 5) Drain Flange : SS316L (1.4404) 6) Float : SS316Ti (1.4571) 7) Gasket : Graphite or Aramide9) 8) Bolts and washers : SS304L (1.4104) Dimensions (mm) A = 150 to max. 5700 11)

Options: • Chamber materials lined; 304L, PVC, PP, PVDF, Halar coated or PTFE lined (NON-ATEX) • Float materials; titanium, Inconel or Monel 400 • Isolation valves • SS316L Scale (CM, % or inches) • Switches (SPDT or SPST) • Transmitter 4-20 mA 2 wires • Transmitter 4-20 mA with local Display • Insulation Glassfiber (hot applications to + 400°) • Insulation Armaflex (cold application -50°C) • Damping springs • PTFE gasket • Steam Jacket

9) Depending on the pressure temperature rating 10) For Atex zone maximum temperature of < 360°C 11) Using for ATEX application the length of the chamber is limited Group IIA - max. Length 4000mm Group IIB - max. Length 4000mm Group IIB+H2 max. Length 2000mm Group IIC max. Length 1000mm

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Model Top mounted level indicator above a tank MLD-40 (Acc. to EN/DIN/ISO)

MLD-300 (Acc. to ANSI)

Process specification Working pressure max. : 40 barg (580 psi) Process temperature : -50°C to + 400°C28) Specific gravity (S.G.) : min. 700 kg/m3 Standard material specifications 1) Tube ODØ60, 3 x 2mm : SS316L (1.4404) 2) Process connections : SS316L (1.4404) 3) Plug ½” BSPT or ½” NPT : SS316L (1.4404) 4) Top cap : SS316L (1.4404) 5) Indicator Flappers red/white : SS316L (1.4404) 6) Top “dry” Float : SS316Ti (1.4571) 7) Floating “wetted” float : SS316Ti (1.4571) 8) Connection tube : Titanium gr.2 9+10) Float block rod with pins : SS316L (1.4404) Dimensions (mm) A = max. 400029) B = max. 3800 C = see table 7

Table 7 Options:

• Chamber materials; 304L, PVC, PP or PVDF or Halar or PTFE lined (NON-ATEX) • Float materials; titanium, Inconel or Monel 400 • Isolation valves • SS316L Scale (CM, % or inches) • Switches (SPDT or SPST) • Transmitter 4-20 mA 2 wires • Transmitter 4-20 mA with local Display • Insulation Glassfiber (hot applications to + 400°) • Insulation Armaflex (cold application -50°C) • Damping springs • PTFE gasket

28) For Atex zone maximum temperature of < 360°C 29) Using for ATEX application the length of the chamber is limited Group IIA “A” Length < 4000mm Group IIB “A” Length < 4000mm Group IIB+H2 “A” Length < 2000mm Group IIC “A” Length < 1000mm 30) Flange dimension acc. to EN1092-1 type 05 PN16 or PN40 pressure rating 31) Flange dimension acc. to ASME B16.5 150# or 300# pressure rating

Flange Diameter EN (DIN) Flanges30)

ASME (ANSI) Flanges31)

DN65 - 21/2" 93 95 DN80 - 3" 100 105 DN100 - 4" 118 128 DN125 - 5" 135 140 DN150 - 6" 150 160

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MLG Instruments


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Model Transparent level gauge, up to 100 barg TLG-40, 64 or 1001) (EN/DIN Flanges) TLG- 300, 600 or 9002) (ANSI Flanges)

Process specification Working pressure max. : 100 barg3) Process temperature : - 196°C to + 427°C Description Body : Carbon Steel Gasket : Graphite Glass : Transparent hardened borosilicate Shutt off valve : Carbon Steel, 316, Graphite Bolts : A193.B7 Galvanized Upper Safety ball : AISI 316 with pusher Lower Safety ball : AISI 316 with pusher Process connection(s) Diameter EN (DIN) Flanges4) ASME (ANSI) Flanges5)

DN15 - 1/2" PN40 - PN64 -PN100 ASME 300# -600# – 900#

DN20 - 3/4" PN40 - PN64 - PN100 ASME 300# -600# – 900#

DN25 - 1" PN40 - PN64- PN100 ASME 300# -600# – 900# Options:

• Safety ball check in 316L • SS316L Scale into (CM, % or inches) • Uninterrupted visibility • Drain and vent valves • Top / Bottom connections • No-Frost device • Electric or steam tracer • 316L, ASTM LF2, Hastelloy

1) Depending on the pressure and temperature rating RLG-40 (<40 bar), RLG-64 (<64bar) and RLG-100 (<100 bar) 2) Depending on the pressure and temperature rating RLG-300 (<600 psi), RLG-600 (<1200 psi) or RLG-900 (<1800 psi) 3) On request up to 400 bar (5800 psi) 4) Flange dimensions acc. to EN10 92-1 5) Flange dimension acc. to ASME B16.5



MLG Instruments


14

Model Reflex level gauge, up to 100 barg RLG-40, 64 or 1001) (Acc. to EN/DIN/ISO)

RLG- 300, 600 or 9002) (Acc. to ANSI) Process specification Working pressure max. : 100 barg3) Process temperature : - 196°C to + 427°C Description Body : Carbon Steel Gasket : Graphite Reflex Glass : Hardened borosilicate Shutt off valve : Carbon Steel, 316, Graphite Bolts : A193.B7 Galvanized Upper Safety ball : AISI 316 with pusher Lower Safety ball : AISI 316 with pusher Process connection(s) Diameter EN (DIN) Flanges4) ASME (ANSI) Flanges5)

DN15 - 1/2" PN40 - PN64 -PN100 ASME 300# -600# – 900#

DN20 - 3/4" PN40 - PN64 - PN100 ASME 300# -600# – 900#

DN25 - 1" PN40 - PN64- PN100 ASME 300# -600# – 900# Options:

• Safety ball check in 316L • SS316L Scale into (CM, % or inches) • Uninterrupted visibility • Drain and vent valves • Top / Bottom connections • No-Frost device • Electric or steam tracer • 316L, ASTM LF2, Hastelloy

1) Depending on the pressure and temperature rating RLG-40 (<40 bar), RLG-64 (<64bar) and RLG-100 (<100 bar) 2) Depending on the pressure and temperature rating RLG-300 (<600 psi), RLG-600 (<1200 psi) or RLG-900 (<1800 psi) 3) On request up to 400 bar (5800 psi) 4) Flange dimensions acc. to EN10 92-1 5) Flange dimension acc. to ASME B16.5



MLG Instruments


15

Model Tubular -Glass level gauge, material Brass GLG-BRTH with threaded connections (Threated)

Process specification Working pressure max. : 5 barg Process temperature : 0 to + 200°C Media : Water / Oil / Gasoline Standard material specifications Tube (Ø13mm) : Borosilicate glass Process connections : Brass Hand wheel : Polypropylene All dimensions (mm) Type A L1 L2 L3 Material Glass OD Ø GLG-BRTH-12 1/2" BSPM 28 14 32 Brass 13

Model Tubular - Glass level gauge, material Stainless Steel 1.4571 GLG-SSTH with threaded or flanged connections (Threaded)

GLG-SSFL (Flanged)

Process specification Working pressure max. : 5 barg Process temperature : 0 to + 200°C Media : Water / Oil / Gasoline / Chemicals Standard material specifications Tube (Ø13mm) : Borosilicate glass Process connections : Brass Hand wheel : Polypropylene All dimensions into mm Type A L1 L2 L3 Material Glass OD Ø GLG-SSTH-12 1/2" BSPM 4 16 44 316Ti - 1.4571 13 GLG-SSTH-34 3/4" BSPM * * * 316Ti - 1.4571 16 GLG-SSTH-1 1" BSPM * * * 316Ti - 1.4571 20

Type A L1 L2 L3 Material Glass OD Ø

GLG-SS-FL-15 DN15PN10 40 70 40 316Ti - 1.4571 13 GLG-SS-FL-20 DN20PN10 90 95 50 316Ti - 1.4571 20 GLG-SS-FL-1 DN25PN10 90 100 55 316Ti - 1.4571 25

* On request MLG Instruments is able supply the process connection Acc. to ASME B16.5 150# or 300# Flanges or NPT connections



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Threaded

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Flanged

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Threaded

MLG Instruments


16

Model Bilge level switches, up to 12 bar BLS mounted on wall or on a pipe

Process specification Working pressure max. : 12 barg Process temperature : 0°C to + 125°C Media : Water - Oil Specific gravity (S.G.) : min. 620 kg/m3 Material specifications mechanical Float : 316 Test lever handle : 304 Stem : 316 Perforated tube : 304 Electrical specification Switch : SPDT (Form C) Max. rating : 1,5 A (AC/DC) Max. voltage : 250V AC/DC Ingress Protection : IP-68 Application:

• Bilges (ship’s) • Tanks • Industrial Sumps



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Bilge level switch connected to a level controller

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Wall mounted

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Pipe mounted

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MLG Instruments


17

Model (Reed) Switches for magnetic level gauges See table The magnetic switches are uses to monitor certain limits of the level. You can forward the signal to other controls, alarms or PLC. The magnetic level switches have been designed using the latest material and production methods offering industry a highly dependable hermetically sealed sensor for use in the most arduous and hazardous applications. Switch Model : MLS-100145 MLS-100220 Function : Single Pole Single Throw Single Pole Double Throw Connection : 2 core 3 core Voltage : 10 – 230V 10 – 230V Current : 3A 1A Contacts : Normally Open (NO) Latching type (SPCO) Protection Degree : IP67 IP67 Working temperature : -30°C < to +160°C -30°C < to +160°C Cable material : Silicone Silicone Cable length : 2 metres 3 metres Housing material : Glassfiber Glassfiber Switch Model : MLS-100300 MLS-100301 Function : Single Pole Single Throw Single Pole Single Throw Connection : 3 core 3 core Voltage : 24 – 230V 24 – 230V Current : 2.5A at 24VDC 2.5A at 24VDC 540 mA at 110 VAC 540 mA at 110 VAC 250mA at 230 VAC 250mA at 230 VAC Contacts : SPDT (SPCO) SPDT (SPCO) Maximum voltage : 400V AC/DC 400V AC/DC Power Watts : 60W VA 60W VA Protection Degree : IP66/67/68 IP66/67/68 Working temperature : -20°C to +70 °C -20°C to +70 °C Cable material : PVC PVC Cable length : 2 metres 2 metres Housing material : Stainless steel 316L Brass Approvals : ATEX Exd IIC T6 ATEX Exd IIC T6 Zone : 1,2,21,22 1,2,21,22 Switch Model : MLS-100302 MLS-100303 Connection : 3 core 3 core Voltage : 24 – 230V 24 – 230V Current : 2.5A at 24VDC 2.5A at 24VDC 540 mA at 110 VAC 540 mA at 110 VAC 250mA at 230 VAC 250mA at 230 VAC Contacts : SPDT (SPCO) SPDT (SPCO) Maximum voltage : 400V AC/DC 400V AC/DC Power Watts : 60W VA 60W VA Protection Degree : IP66/67/68 IP66/67/68 Working temperature : -20°C to +75 °C -60°C to +125 °C Cable length : 2 metres 2 metres Housing material : Stainless steel 316L Engineered Resin Approvals : EX ia IIC T6 EX ia IIC T4/T6 On request:

• SS Junction box with ½” or ¾” cable entry • Aluminium junction box with ½” or ¾” cable entry • Acc. the customer specification



MLG Instruments


18

Model Reed probe transmitter VRP

A level measure system “REED PROBE” is based on the positive buoyancy principle that determines the movement of a float situated in a guide pipe linked with the controlled tank, inside the float there is a permanent magnetThe transducer is made with a sequenceof series resistances, supplied with constant voltage, inside a 316SS pipe: At every node of the series is connected the contact of a reed bulb. The floating magnet leads the contact closing of the nearest reed, allowing the readout of a frac-tion of supply voltage, proportional to the measures level. Accuracy of the system rely on the distance between reed bulbs; an excessive small distance between bulbs an excitation of more than one reed, and thus is a limit to the system precision. End of the reed probe is connected with an junction box with mounted a transmitter head (see below additional information).The probe is fastened to the bypass pipe. Standard material specifications Tube 14 x 2mm : SS316L (1.4404) Junction box : Anodized Aluminium Inner Encapsulation : Silicone Cable gland : M20x1,5mm Enclosure : IP67 Technical details Type : PR5343A Power supply : 8 – 35 VDS Output : 4 – 20 mA Connection : 2 Wires Accuracy : ± 5mm Max. Length : 5700mm Options : • EX version, EX i or EX d • Junction box made from SS 316L • EX version, EXi or EX d • With Local LCD • Hart® 5 or Hart® 7 protocol • ATEX Exd and Exi • Profibus PA • Foundation™ Fieldbus • ATEX, IECEx, UL, FM, Gost, CSA,

Inmetro, NEPSI, DNV approval



MLG Instruments


19

Model Magnetic floats for magnetic level gauges See stable 8

Table 8

On request: • Low Specific gravity > 320 kg/m3 • High pressure floats up to 300 barg • Float materials; Hastelloy, Monel • ECTFE (Halar) coated • PTFE, PFA or ETFA lined

Float Type Suitable Model

Level Gauge chamber diameter

(mm) ID x WT

Magnet Material OD (mm)

Length (L)

S.G (kg/m3)

Max. Temp. (°C)

Max. Pressure (barg) at

25°C

MLV30 MLB-M10 - MLB-

M150 40 x 2 1.1 1.4571 (316Ti) 30 175 1000 100 10

MLV1 MLA-MLB-MLC-

MLD 60,3 x 2 2.2 1.4571 (316Ti) 52 150 < 827 350 40

MLV1 MLA-MLB-MLC-

MLD 60,3 x 2 3.3 1.4571 (316Ti) 52 150 < 950 350 40

MLV2 MLA-MLB-MLC-

MLD 60,3 x 2 2.2 1.4571 (316Ti) 52 230 < 650 350 40

MLV2 MLA-MLB-MLC-

MLD 60,3 x 2 3.3 1.4571 (316Ti) 52 230 < 740 350 40

MLVT1 MLA-MLB-MLC 60,3 x 2 2.2 Titanium gr.2 52 150 < 620 350 40


MLVT2 MLA-MLB-MLC-

MLD 60,3 x 2 2.2 Titanium gr.2 52 250 < 461 350 40


MLVT3 MLA-MLB-MLC 60,3 x 2 2.2 Titanium

gr.2 52 350 < 385 350 40

MLVT3 MLA-MLB-MLC 60,3 x 2 3.3 Titanium

gr.2 52 350 < 444 350 40

MLVBB1D MLD 60,3 x 2 2.2 1.4571 (316Ti) 52 100 - 350 85

MLVBB2 Special 60,3 x 2 2.2 1.4571 (316Ti) 52 100 998 350 85



Process temperatureAmbient

temperatureTemperature

ClassMax. Surface temperature

Insulation name Isolation Thickniss

(mm) Layer

Flapper Indicator protection cover

Delivery

-50 ≤ -10°C Armaflex 9 2 Glass not standard

≤ 68 °C T6 T 85°C Glassfiber - - Polycarbonate standard

> 68°C ≤ 80°C T5 T100°C Glassfiber 1 1 Polycarbonate standard

> 80°C ≤ 108°C T4 T135°C Glassfiber 1 1 Polycarbonate not standard

> 108°C ≤ 160°C T3 T200°C Glassfiber 0,5 + 1 1 Glass not standard

> 160°C ≤ 240°C T2 T300°C Glassfiber with Shield 1 2 Glass not standard

> 240°C ≤ 360°C T1 T450°C Glassfiber with Shield 1 3 Glass not standard

The temperature class or max. surface temperature is depending on the process temperature acc. to the following table:

-50°C .. +60°C

Recommended insulation Flapper Indicator protection

cover plate

Recommended insulation tabel 1)



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