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Functional safety SIL

The production of a safety instrumented system must be done with the best SIL certified instruments

To obtain reliable information for safety instrumented systems (IEC 61511), proper instrument specification and implementation is crucial. The application must be clear, the correct instrument technology applied and the life cycle properly managed.

Functional safety in process instrumentation. Learn about Safety Integrity Levels (SIL), continuous self-monitoring, homogeneous redundancy and proof testing.

Regular verification or remote iterative proof test with SIL certified protocol (hardware/ software) ©Endress+Hauser

Remote initiation of proof test

  • Regular verification or remote iterative proof test with SIL certified protocol (hardware/ software)

Safety by choice

Our extensive SIL qualified and certified instrumentation portfolio is developed according to IEC 61508. We offer the best solutions for every measuring task including flow, level, pressure, temperature and measurement subsystems. Many of our devices have a SIL rating of SIL 2/3. This means you can reach SIL 3 even in homogeneous redundancy.

Safety by smart proof testing

Sensors and sensor subsystems must be proof tested to ensure that they are available to carry out their safety role. With smart sensors you are able to evoke proof testing procedures including in-situ proof testing via a push-button or software simulation. Actionable diagnostics and safety parameters offer you the ability to extend proof test intervals reducing your risk, lowering costs and improving availability.

Our full SIL capable certified measurement family

Are you looking for more information on our SIL certified devices or would you like to download datasheets or safety manuals? Use the filters below to find the products in our SIL capable portfolio that best fit your needs.

Discover why functional safety is critical for your operations.

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    Picture of Electromagnetic flowmeter Proline Promag P 300 / 5P3B for process applications

    Proline Promag P 300
    electromagnetic flowmeter

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    High-temperature flowmeter for process applications with a compact, easily accessible transmitter

    Predecesor: Promag 50P, Promag 51P, Promag 53P, Promag 50E, Promag 53E

    Afişare specificaţii pe scurt Ascundere detalii
    • Max. measurement error

      Volume flow (standard): ±0.5 % o.r.± 1 mm/s (0.04 in/s)
      Volume flow (option): ±0.2 % o.r. ± 2 mm/s (0.08 in/s), Flat Spec

    • Measuring range

      4 dm³/min to 9600 m³/h (1 gal/min to 44 000 gal/min)

    • Medium temperature range

      Liner material PFA: –20 to +150 °C (–4 to +302 °F)
      Liner material PFA high-temperature: –20 to +180 °C (–4 to +356 °F)
      Liner material PTFE: –40 to +130 °C (–40 to +266 °F)

    • Max. process pressure

      PN 40, Class 300, 20K

    • Wetted materials

      Liner: PFA; PTFE
      Electrodes: 1.4435 (F316L); Alloy C22, 2.4602 (UNS N06022); Tantalum; Platinum; Titanium

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    Coriolis flowmeter - Proline Promass F 300

    Proline Promass F 300
    Coriolis flowmeter

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    Flowmeter with premium accuracy, robustness and a compact, easily accessible transmitter

    Predecesor: Promass 80F, Promass 83F, Promass 84F

    Afişare specificaţii pe scurt Ascundere detalii
    • Max. measurement error

      Mass flow (liquid): ±0.10 % (standard), 0.05 % (option)
      Volume flow (liquid): ±0.10 %
      Mass flow (gas): ±0.25 %
      Density (liquid): ±0.0005 g/cm³

    • Measuring range

      0 to 2 200 000 kg/h (0 to 80 840 lb/min)

    • Medium temperature range

      Standard: –50 to +150 °C (–58 to +302 °F)
      Option: –50 to +240 °C (–58 to +464 °F)
      High temperatur option: –50 to +350 °C (–58 to +662 °F)
      Option: –196 to +150 °C (–320 to +302 °F)

    • Max. process pressure

      PN 100, Class 600, 63K

    • Wetted materials

      Measuring tube: 1.4539 (904L); 1.4404 (316/316L); Alloy C22, 2.4602 (UNS N06022)
      Connection: 1.4404 (316/316L); Alloy C22, 2.4602 (UNS N06022); 1.4301 (F304)

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    Liquiphant FTL51B - Vibronic

    Liquiphant FTL51B - digital, simple and safe

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    Point level switch for all liquid media

    Predecesor: Liquiphant M FTL51, Liquiphant M FTL50

    Afişare specificaţii pe scurt Ascundere detalii
    • Process temperature

      -50 °C...+150 °C
      (-58 °F...+302 °F)

    • Process pressure / max. overpressure limit

      Vacuum...100 bar
      Vacuum...1450 psi

    • Min. density of medium

      0.5 g/cm³
      (0.4 g/cm³ optional)

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    Product picture loop-powered indicator RIA15

    RIA15 process indicator

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    Loop-powered Ex ia process indicator as field or control panel device for 4 to 20 mA signals or HART®protocol

    Predecesor: Process indicator RIA251, Field indicator RIA261, VU2550, VU2551

    Afişare specificaţii pe scurt Ascundere detalii
    • Input

      1 x analogue 4...20 mA/HART®

    • Output

      Not defined

    • Display

      LCD 17 mm (0.67")
      5-digit
      7-segment bargraph
      Plain text display for unit/TAG
      Activatable backlight

    • Power Supply

      Loop powered

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    Product picture process transmitter RMA42

    RMA42 process indicator with control unit

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    4-wire process indicator with control unit as DIN rail device with up to two universal sensor inputs and optional SIL approval

    Predecesor: Contactor RTA421, Process transmitter RMA421, Process transmitter RMA422, XTN170

    Afişare specificaţii pe scurt Ascundere detalii
    • Input

      2 x universal (current, voltage, R, RTD, TC, resistance)

    • Output

      2 x Analog (current, voltage)

    • Display

      LCD
      7 segment
      Multicolour
      Bargraph
      TAG unit
      Colour change in case of failure

    • Power Supply

      Wide range power supply 24 to 230 V AC/DC (-20 % / +10 %) 50/60 Hz

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    iTEMP TMT82 temperature transmitter with HART® communication

    iTEMP TMT82 temperature transmitter

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    HART® temperature transmitter as head, field or DIN rail device with two universal sensor inputs suitable for use in hazardous areas and SIL 2

    Afişare specificaţii pe scurt Ascundere detalii
    • Accuracy

      (Pt100, -50...200 °C) <= 0,1 K
      (Pt100, -58...392 °F) <= 0,18 °F

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    Proline t-mass F 300 – Inline version with flange connection

    Proline t-mass F 300
    thermal mass flowmeter

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    Inline flowmeter with long-term stability and a compact, easily accessible transmitter

    Predecesor: t-mass 65F, t-mass 65I

    Afişare specificaţii pe scurt Ascundere detalii
    • Max. measurement error

      Gas: 1.0% o.r. (10 to 100% o.f.s.), 0.1% o.f.s. (1 to 10% o.f.s.)

    • Measuring range

      0.5 to 3750 kg/h (1.1 to 8250 lb/h)

    • Medium temperature range

      -40 °C to +180°C (-40 °F to +356 °F)

    • Max. process pressure

      PN40 / Cl. 300 / 20K

    • Wetted materials

      Measuring tubes
      DN 15 to 50 (½ to 2"): stainless cast steel, CF3M/1.4408
      DN 65 to 100 (2½ to 4"): stainless steel, 1.4404 (316/316L)
      Process connections
      Flange connections
      Stainless steel, 1.4404 (F316/F316L)
      Threaded connections
      Stainless steel, 1.4404 (316/316L)
      Sensing element
      Unidirectional
      Stainless steel, 1.4404 (316/316L)
      Alloy C22, 2.4602 (UNS N06022);
      Bidirectional
      Stainless steel, 1.4404 (316/316L)
      Reverse flow detection
      Stainless steel, 1.4404 (316/316L)

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    Picture of Vortex flowmeter Proline Prowirl F 200 / 7F2C for utilities

    Proline Prowirl F 200
    vortex flowmeter

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    Versatile flowmeter with detection of wet steam conditions and best-in-class accuracy

    Predecesor: Proline Prowirl F 200 / 7F2B

    Afişare specificaţii pe scurt Ascundere detalii
    • Max. measurement error

      Volume flow (liquid): ±0.75 %
      Volume flow (optional): ±0.65 %
      Volume flow (optional): ±0.65 %
      Volume flow (steam, gas): ±1.00 %
      Mass flow (saturated steam): ±1.7% (temperature compensated); ±1.5% (temperature/pressure compensated)
      Mass flow (superheated steam, gas): ±1.5 (temperature/pressure compensated); ±1.7% (temperature compensated + external pressure compensation)
      Mass flow (liquid): ±0.85%

    • Measuring range

      Liquid: 0.076 to 2100 m³/h (0.045 to 1300 ft³/min)
      depending on medium: water with 1 bar a, 20 °C (14.5 psi a, 68° F)
      Steam, gas: 0.39 to 28000 m³/h (0.23 to 17000 ft³/min)
      depending on medium: steam with 180 °C, 10 bar a (356 °F, 145 psi a); air with 25 °C, 4.4 bar a (77 °F, 63.8 psi a)

    • Medium temperature range

      Standard: –40 to +260 °C (–40 to +500 °F)
      High/low temperature (option): –200 to +400 °C (–328 to +752 °F)

    • Max. process pressure

      PN 100, Class 600, 20K

    • Wetted materials

      Measuring tube: 1.4408 (CF3M); CX2MW similar to Alloy C22, 2.4602
      DSC sensor: 1.4404 (316/316L); UNS N06022 similar to Alloy C22, 2.4602
      Process connection: 1.4404/F316/F316L); 2.4602

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    Picture of Coriolis flowmeter Proline Promass X 300 / 8X3B for the oil and gas industry

    Proline Promass X 300
    Coriolis flowmeter

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    Highest capacity four-tube flowmeter with a compact, easily accessible transmitter

    Predecesor: Promass 83X, Promass 84X

    Afişare specificaţii pe scurt Ascundere detalii
    • Max. measurement error

      Mass flow (liquid): ±0.10 % (standard), 0.05 % (option)
      Volume flow (liquid): ±0.10 %
      Mass flow (gas): ±0.35 %
      Density (liquid): ±0.0005 g/cm³

    • Measuring range

      0 to 4100 t/h (0 to 4520 tn. sh./h)

    • Medium temperature range

      –50 to +180 °C (–58 to +356 °F)

    • Max. process pressure

      PN 100, Class 600

    • Wetted materials

      Measuring tube: 1.4404 (316/316L)
      Connection: 1.4404 (316/316L)

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    Picture of ultrasonic flowmeter Proline Prosonic Flow G 300 / 9G3B - Highly robust gas specialist

    Proline Prosonic Flow G 300 ultrasonic flowmeter

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    Highly robust gas specialist for fluctuating conditions with compact, easily accessible transmitter

    Afişare specificaţii pe scurt Ascundere detalii
    • Max. measurement error

      Volume flow (standard):
      ‐ ±1.0 % o.r. for 3 to 40 m/s (9.84 to 131.23 ft/s)
      ‐ ±2 % o.r. for 0.3 to 3 m/s (0.98 to 9.84 ft/s)
      Volume flow (optional calibration):
      ‐ ±0.5 % o.r. for 3 to 40 m/s (9.84 to 131.23 ft/s)
      ‐ ±1.0 % o.r. for 0.3 to 3 m/s (0.98 to 9.84 ft/s)
      Corrected volume flow (standard):
      ‐ ±1.5 % o.r. for 3 to 40 m/s (9.84 to 131.23 ft/s)
      ‐ ±2.5 % o.r. for 0.3 to 3 m/s (0.98 to 9.84 ft/s)
      Corrected volume flow (optional calibration):
      ‐ ±1.0 % o.r. for 3 to 40 m/s (9.84 to 131.23 ft/s)
      ‐ ±1.5 % o.r. for 0.3 to 3 m/s (0.98 to 9.84 ft/s)
      Sound Velocity: ±0.2 % o.r.

    • Measuring range

      Gas: 0.3 m/s to 40 m/s

    • Medium temperature range

      -50 to 150 °C (-58 to +302°F)
      -50 to 100 °C (-58 to +212°F) with integrated pressure cell

    • Max. process pressure

      0.7 to 101 bar a (10.15 to 1464.88 psi a)

    • Wetted materials

      Measuring tube: 1.4408/1.4409 (CF3M)
      Transducer: 1.4404 (316, 316L), Titan Grade 2

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    Functional Safety in practice

    Investments in functional safety, and thus in measures to avoid accidental and systematic errors, are very moderate if one relies on instruments developed according to IEC 61508.

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