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enraf tank gauging

Enraf Servo 954

Enraf Servo 954 advances the art of tank gauging with proven measurement technology and advance software algorithms for even better performance.

Overview
Honeywell Enraf has ensured that the industry’s best tank gauging solution is now even better. Designed for measuring all kinds of liquids in any type of storage tank, our new Smart Servo 954 is a reliable, versatile and accurate automatic tank gauge. This instrument advances the art of tank gauging by combining proven technology with enhanced electronics and software, as well as increased intelligence. And, it stands up to the most demanding process conditions

What Is It?​
Enraf’s automated tank gauging has been leading offerings for more than 30 years now with more than 65,000 Servo’s installed world-wide. Honeywell continues to invest in this flagship product line and we now have an upgraded version of our field-proven 854 ATG which now can address even more applications in a challenging process environment. Enraf Servo 954 is designed for accurate and reliable measurement in liquid / vaporized liquid applications with extended level & temperature ranges. This embraces modular design offering utmost flexibility to choose options needed for your specific application. The advancements in software algorithms further enhance its performance by making it the most accurate, reliable and versatile gauge in tank farms / terminals.

How Does It Work?
Enraf Servo 954 multi-function device provides a flexible and adaptable solution for a wide range of measurements and interface options needed for safe and efficient terminal operations
  • Product level
  • Interface level
  • Product and gas temperature with spot or average temperature measurement, or temperature profiling
  • Density measurement and profiling
  • Direct water bottom measurement or via capacitive probes
  • Average continuous density monitoring connecting one or more HART pressure transmitters
  • SIL certified NO/NC alarm relay contact or 4-20 mA output for direct connection to a Distributed Control System (DCS), or safety and overfill protection systems such as Honeywell
What Problems Does It Solve?
​Enraf Servo 954 tank gauges will help end-users improve safety & operational efficiency in Terminal operations by:​
  • Accurate measurement in liquids including vaporized applications
  • Improve reliability under dynamic conditions
  • Maximize storage capacity with the lowest safety diagnostic cycle time
  • Enhanced safety with SIL certified AO/DO options for overfill prevention
  • Modular design for ease of maintenance
  • Simple & cost-effective: migrations for legacy & 3rd party gauge
  • One-stop integrated gauging solution for all your terminal needs
  • Measurement ranges up to 150 m
  • Working pressure up to 40 bar
Specifications

Environmental Safety

  • Ambient Temperature Range
    • -40 to +65 deg C (-40 to +149 deg F)
  • Storage Temperature Range
    • -50 to +70 deg C (-58 to +158 deg F)
  • Protection Class
    • IP6 /IP67 according to EN 60529 (NEMA 4X)
  • Explosion Safety Approvals
    • • Explosion proof
    • −Class I, Division 1, Group C & D (FM)
    • −Class I, Group C & D (CSA certificate)
    • −Ex d [ia Ga] IIB T6 Ga/Gb or Ex de [ia Ga] IIB T6 Ga/Gb (ATEX KEMA)
    • −II 1/2 G Ex d IIB T6 Ga/Gb or Ex de IIB T6 Ga/Gb
  • Approvals
    • SIL-by-design (IEC 61508), ATEX, IECEx, FM, CSA, KOSHA, INMETRO, NMi, OIML R85

Mechanical

  • Weight
    • Chemical version -21 kg (46 lb)
    • High pressure version -26 kg (57 lb)
    • Medium pressure version -16 kg (35 lb)
  • Flange Specification
    • Chemical version, 2 in Class 150 RF, Flanges acc. ASME B16.5, (Ra=3.2-6.3 μm), AISI 316, Up to 6 bar
    • Chemical version, DN50, PN 6, Flanges acc. EN 1092-1, (Ra=3.2-12.5 μm), AISI 316, Up to 6 bar
    • High pressure, 2 in Class 300 RF, Flanges acc. ASME B16.5, (Ra=3.2-6.3 μm), AISI 316, Up to 40 Bar
    • High pressure, DN50, PN 40, Flanges acc. EN 1092-1, (Ra=3.2-12.5 μm), AISI 316, Up to 40 Bar
    • Medium pressure, 2 in Class 150 FF, Flanges acc. ASME B16.5, (Ra=3.2-6.3 μm), AL, Up to 6 Bar
    • • Atmospheric pressure, 2 in Class 150 FF, Flanges acc. ASME B16.5, (Ra = 3.2-6.3 μm) , AL
  • Cable Entries
    • 4 x ¾ in NPT (2* I.S. + 2* non-I.S.)

Instrument Measuring Specification

  • Sensitivity
    • ≤ 0.1 mm (±0.004 in)
  • Repeatability
    • ≤ 0.1 mm (±0.004 in)
  • Process Temperature Range
    • Max -+200 deg C (+392 deg F), drum housing must be kept below +65 deg C (+149 deg F)
    • Min -200 deg C (-328 deg F), drum housing must be kept above -40 deg C (-40 deg F)
  • Process Pressure Range
    • H version Up to 40 bar/4 MPa (600 psi) (up to 25 bar/2.5 MPa in acc. to PED)
    • M and C versions -Up to 6 bar/0.6 MPa (90 psi)
  • Measuring Accuracy
    • Density: < ±3 kg/m³ (±0.19 lb/ft³)
    • Interface: < ±2 mm (±0.08 in)
    • Level :40 m: < ±0.4 mm (±0.016 in), OIML R85 certified, 45 m: ±1 mm
    • Temperature: < ±0.1 deg C (±0.18 deg F)
  • Level Measuring Range
    • • Standard: 27 m (88 ft) • Extended: -37 m (121 ft), 40 m (131 ft) - 45 m (147 ft), - 35 m (115 ft) with measuring wire up to 150 m (492 ft)• Longer ranges available on request
  • Density
    • Available with density firmware and density displacer

Electrical

  • Power Supply
    • Autoselect 65 to 240 VAC, 50/60 Hz and/or 24 to 65 VDC
  • Power Rating
    • 11 Wmax continuously

Process Wetted Materials

  • O-Ring Material
    • Chemical applications (such as Ammonia), part nr. S0854969
    • Drum cover Silicone/FEP; others FPN (Viton®); Special O-ring (Perlas®) available for demanding
  • Measuring Wire
    • Measuring range - 27 M, Wire Material -AISI 316, Hestelloy C22, Tantalum, Tungsten
    • Measuring range - 37 M, Wire Material -AISI 316, Invar, Tungsten
    • Measuring range - 40 M/45 M, Aviallable Wire Material -AISI 316, Tungsten
    • Measuring range - 40 M/45 M, Aviallable Wire Material -AISI 316, Tungsten
  • Measuring Drum/Drum Shaft
    • Stainless Steel (1.4401) EN10088 AISI 316
  • Magnet Cap
    • Stainless Steel (1.4401) EN10088 AISI 316
  • Drum Compartment
    • Cast Aluminum Int. reg. AA A356 EN1706 AC-AlSi7Mg0.3
    • Stainless Steel ASTM A351, CF-8M, G-X6 CrNiMo 18 10 (1.4408)

Migration Option

  • Migration Option
    • • Enraf Servo 854 ATG to Servo 954 hardware migration/upgrade kit

General

  • Measurement Capabilities
    • Product Level, Interface Level, Density, Water Bottom, Temperature (Spot/Average/Profile)

Data Communication & Inputs

  • Inputs
    • VITO Temperature/Water Probe, Spot RTD (up to 6 elements), HART® Inputs (up to 5)
  • Communication
    • Honeywell Bi-phase Mark, TRL/2, Modbus RTU, HART® 7, ASCII, GPU Protocol

SIL 2/3 Safety Function Output Options

  • Digital and Analog Combined
    • SIL AO + 1 SIL DO contact NAMUR NE43 compliant, (1 x SPDT contact, 2 A at 250 Vac or 2 A at 40 Vdc, Pmax = 500 W)
    • SIL AO + 2 SIL DO contacts NAMUR NE43 compliant, (2 x SPDT contact, 2 A at 250 Vac or 2 A at 40 Vdc, Pmax = 500 W)
  • Digital Output Specification
    • 1 x SIL DO contact (1 x SPDT contact, 2 A at 250 Vac or 2 A at 40 Vdc, Pmax = 500 W)
    • 2 x SIL DO contact (2 x SPDT contact, 2 A at 250 Vac or 2 A at 40 Vdc, Pmax = 500 W)
  • Analog Output Specification
    • SIL AO NAMUR NE43 compliant

Environmental Safety

  • Ambient Temperature Range
    • -40 to +65 deg C (-40 to +149 deg F)
  • Storage Temperature Range
    • -50 to +70 deg C (-58 to +158 deg F)
  • Protection Class
    • IP6 /IP67 according to EN 60529 (NEMA 4X)
  • Explosion Safety Approvals
    • • Explosion proof
    • −Class I, Division 1, Group C & D (FM)
    • −Class I, Group C & D (CSA certificate)
    • −Ex d [ia Ga] IIB T6 Ga/Gb or Ex de [ia Ga] IIB T6 Ga/Gb (ATEX KEMA)
    • −II 1/2 G Ex d IIB T6 Ga/Gb or Ex de IIB T6 Ga/Gb
  • Approvals
    • SIL-by-design (IEC 61508), ATEX, IECEx, FM, CSA, KOSHA, INMETRO, NMi, OIML R85

Mechanical

  • Weight
    • Chemical version -21 kg (46 lb)
    • High pressure version -26 kg (57 lb)
    • Medium pressure version -16 kg (35 lb)
  • Flange Specification
    • Chemical version, 2 in Class 150 RF, Flanges acc. ASME B16.5, (Ra=3.2-6.3 μm), AISI 316, Up to 6 bar
    • Chemical version, DN50, PN 6, Flanges acc. EN 1092-1, (Ra=3.2-12.5 μm), AISI 316, Up to 6 bar
    • High pressure, 2 in Class 300 RF, Flanges acc. ASME B16.5, (Ra=3.2-6.3 μm), AISI 316, Up to 40 Bar
    • High pressure, DN50, PN 40, Flanges acc. EN 1092-1, (Ra=3.2-12.5 μm), AISI 316, Up to 40 Bar
    • Medium pressure, 2 in Class 150 FF, Flanges acc. ASME B16.5, (Ra=3.2-6.3 μm), AL, Up to 6 Bar
    • • Atmospheric pressure, 2 in Class 150 FF, Flanges acc. ASME B16.5, (Ra = 3.2-6.3 μm) , AL
  • Cable Entries
    • 4 x ¾ in NPT (2* I.S. + 2* non-I.S.)

Instrument Measuring Specification

  • Sensitivity
    • ≤ 0.1 mm (±0.004 in)
  • Repeatability
    • ≤ 0.1 mm (±0.004 in)
  • Process Temperature Range
    • Max -+200 deg C (+392 deg F), drum housing must be kept below +65 deg C (+149 deg F)
    • Min -200 deg C (-328 deg F), drum housing must be kept above -40 deg C (-40 deg F)
  • Process Pressure Range
    • H version Up to 40 bar/4 MPa (600 psi) (up to 25 bar/2.5 MPa in acc. to PED)
    • M and C versions -Up to 6 bar/0.6 MPa (90 psi)
  • Measuring Accuracy
    • Density: < ±3 kg/m³ (±0.19 lb/ft³)
    • Interface: < ±2 mm (±0.08 in)
    • Level :40 m: < ±0.4 mm (±0.016 in), OIML R85 certified, 45 m: ±1 mm
    • Temperature: < ±0.1 deg C (±0.18 deg F)
  • Level Measuring Range
    • • Standard: 27 m (88 ft) • Extended: -37 m (121 ft), 40 m (131 ft) - 45 m (147 ft), - 35 m (115 ft) with measuring wire up to 150 m (492 ft)• Longer ranges available on request
  • Density
    • Available with density firmware and density displacer

Electrical

  • Power Supply
    • Autoselect 65 to 240 VAC, 50/60 Hz and/or 24 to 65 VDC
  • Power Rating
    • 11 Wmax continuously

Process Wetted Materials

  • O-Ring Material
    • Chemical applications (such as Ammonia), part nr. S0854969
    • Drum cover Silicone/FEP; others FPN (Viton®); Special O-ring (Perlas®) available for demanding
  • Measuring Wire
    • Measuring range - 27 M, Wire Material -AISI 316, Hestelloy C22, Tantalum, Tungsten
    • Measuring range - 37 M, Wire Material -AISI 316, Invar, Tungsten
    • Measuring range - 40 M/45 M, Aviallable Wire Material -AISI 316, Tungsten
    • Measuring range - 40 M/45 M, Aviallable Wire Material -AISI 316, Tungsten
  • Measuring Drum/Drum Shaft
    • Stainless Steel (1.4401) EN10088 AISI 316
  • Magnet Cap
    • Stainless Steel (1.4401) EN10088 AISI 316
  • Drum Compartment
    • Cast Aluminum Int. reg. AA A356 EN1706 AC-AlSi7Mg0.3
    • Stainless Steel ASTM A351, CF-8M, G-X6 CrNiMo 18 10 (1.4408)

Migration Option

  • Migration Option
    • • Enraf Servo 854 ATG to Servo 954 hardware migration/upgrade kit

General

  • Measurement Capabilities
    • Product Level, Interface Level, Density, Water Bottom, Temperature (Spot/Average/Profile)

Data Communication & Inputs

  • Inputs
    • VITO Temperature/Water Probe, Spot RTD (up to 6 elements), HART® Inputs (up to 5)
  • Communication
    • Honeywell Bi-phase Mark, TRL/2, Modbus RTU, HART® 7, ASCII, GPU Protocol

SIL 2/3 Safety Function Output Options

  • Digital and Analog Combined
    • SIL AO + 1 SIL DO contact NAMUR NE43 compliant, (1 x SPDT contact, 2 A at 250 Vac or 2 A at 40 Vdc, Pmax = 500 W)
    • SIL AO + 2 SIL DO contacts NAMUR NE43 compliant, (2 x SPDT contact, 2 A at 250 Vac or 2 A at 40 Vdc, Pmax = 500 W)
  • Digital Output Specification
    • 1 x SIL DO contact (1 x SPDT contact, 2 A at 250 Vac or 2 A at 40 Vdc, Pmax = 500 W)
    • 2 x SIL DO contact (2 x SPDT contact, 2 A at 250 Vac or 2 A at 40 Vdc, Pmax = 500 W)
  • Analog Output Specification
    • SIL AO NAMUR NE43 compliant
  • Ambient Temperature Range : -40 to +65 deg C (-40 to +149 deg F)
  • Weight : Chemical version -21 kg (46 lb)|High pressure version -26 kg (57 lb)|Medium pressure version -16 kg (35 lb)
  • Storage Temperature Range : -50 to +70 deg C (-58 to +158 deg F)
  • Sensitivity : ≤ 0.1 mm (±0.004 in)
  • Repeatability : ≤ 0.1 mm (±0.004 in)
  • Protection Class : IP6 /IP67 according to EN 60529 (NEMA 4X)
  • Process Temperature Range : Max -+200 deg C (+392 deg F), drum housing must be kept below +65 deg C (+149 deg F)|Min -200 deg C (-328 deg F), drum housing must be kept above -40 deg C (-40 deg F)
  • Process Pressure Range : H version Up to 40 bar/4 MPa (600 psi) (up to 25 bar/2.5 MPa in acc. to PED)|M and C versions -Up to 6 bar/0.6 MPa (90 psi)
  • Power Supply : Autoselect 65 to 240 VAC, 50/60 Hz and/or 24 to 65 VDC
  • Power Rating : 11 Wmax continuously
  • O-Ring Material : Chemical applications (such as Ammonia), part nr. S0854969|Drum cover Silicone/FEP; others FPN (Viton®); Special O-ring (Perlas®) available for demanding
  • Migration Option : • Enraf Servo 854 ATG to Servo 954 hardware migration/upgrade kit
  • Measuring Wire : Measuring range - 27 M, Wire Material -AISI 316, Hestelloy C22, Tantalum, Tungsten|Measuring range - 37 M, Wire Material -AISI 316, Invar, Tungsten|Measuring range - 40 M/45 M, Aviallable Wire Material -AISI 316, Tungsten|Measuring range - 40 M/45 M, Aviallable Wire Material -AISI 316, Tungsten
  • Measuring Drum/Drum Shaft : Stainless Steel (1.4401) EN10088 AISI 316
  • Measuring Accuracy : Density: < ±3 kg/m³ (±0.19 lb/ft³)|Interface: < ±2 mm (±0.08 in)|Level :40 m: < ±0.4 mm (±0.016 in), OIML R85 certified, 45 m: ±1 mm|Temperature: < ±0.1 deg C (±0.18 deg F)
  • Measurement Capabilities : Product Level, Interface Level, Density, Water Bottom, Temperature (Spot/Average/Profile)
  • Magnet Cap : Stainless Steel (1.4401) EN10088 AISI 316
  • Level Measuring Range : • Standard: 27 m (88 ft) • Extended: -37 m (121 ft), 40 m (131 ft) - 45 m (147 ft), - 35 m (115 ft) with measuring wire up to 150 m (492 ft)• Longer ranges available on request
  • Inputs : VITO Temperature/Water Probe, Spot RTD (up to 6 elements), HART® Inputs (up to 5)
  • Flange Specification : Chemical version, 2 in Class 150 RF, Flanges acc. ASME B16.5, (Ra=3.2-6.3 μm), AISI 316, Up to 6 bar|Chemical version, DN50, PN 6, Flanges acc. EN 1092-1, (Ra=3.2-12.5 μm), AISI 316, Up to 6 bar|High pressure, 2 in Class 300 RF, Flanges acc. ASME B16.5, (Ra=3.2-6.3 μm), AISI 316, Up to 40 Bar|High pressure, DN50, PN 40, Flanges acc. EN 1092-1, (Ra=3.2-12.5 μm), AISI 316, Up to 40 Bar|Medium pressure, 2 in Class 150 FF, Flanges acc. ASME B16.5, (Ra=3.2-6.3 μm), AL, Up to 6 Bar|• Atmospheric pressure, 2 in Class 150 FF, Flanges acc. ASME B16.5, (Ra = 3.2-6.3 μm) , AL
  • Explosion Safety Approvals : • Explosion proof|−Class I, Division 1, Group C & D (FM)|−Class I, Group C & D (CSA certificate)|−Ex d [ia Ga] IIB T6 Ga/Gb or Ex de [ia Ga] IIB T6 Ga/Gb (ATEX KEMA)|−II 1/2 G Ex d IIB T6 Ga/Gb or Ex de IIB T6 Ga/Gb
  • Drum Compartment : Cast Aluminum Int. reg. AA A356 EN1706 AC-AlSi7Mg0.3|Stainless Steel ASTM A351, CF-8M, G-X6 CrNiMo 18 10 (1.4408)
  • Digital and Analog Combined : SIL AO + 1 SIL DO contact NAMUR NE43 compliant, (1 x SPDT contact, 2 A at 250 Vac or 2 A at 40 Vdc, Pmax = 500 W)|SIL AO + 2 SIL DO contacts NAMUR NE43 compliant, (2 x SPDT contact, 2 A at 250 Vac or 2 A at 40 Vdc, Pmax = 500 W)
  • Digital Output Specification : 1 x SIL DO contact (1 x SPDT contact, 2 A at 250 Vac or 2 A at 40 Vdc, Pmax = 500 W)|2 x SIL DO contact (2 x SPDT contact, 2 A at 250 Vac or 2 A at 40 Vdc, Pmax = 500 W)
  • Density : Available with density firmware and density displacer
  • Communication : Honeywell Bi-phase Mark, TRL/2, Modbus RTU, HART® 7, ASCII, GPU Protocol
  • Cable Entries : 4 x ¾ in NPT (2* I.S. + 2* non-I.S.)
  • Approvals : SIL-by-design (IEC 61508), ATEX, IECEx, FM, CSA, KOSHA, INMETRO, NMi, OIML R85
  • Analog Output Specification : SIL AO NAMUR NE43 compliant
Brochure
Name
Description
File Size
Date
Size
The Industry's Best Servo Gauge
application/pdf 1.36 MB
2/24/2022
1.36 MB
Customize the smart servo with a host of options
application/pdf 1.15 MB
2/24/2022
1.15 MB
Make your best Servo, Even Better
application/pdf 186.41 KB
2/24/2022
186.41 KB
This brochure portrays a complete overview of our solutions for terminal automation
application/pdf 2.05 MB
3/9/2022
2.05 MB
White Paper
Name
Description
File Size
Date
Size
Helping you select the right technology for tank level gauging and custody transfer applications
application/pdf 1.23 MB
2/24/2022
1.23 MB
Case Study
Name
Description
File Size
Date
Size
2212200 HPS CAS Valero Dublin Customer Success Story A4
application/pdf 1.54 MB
12/5/2023
1.54 MB
Name
Description
File Size
Date
Size
The Industry's Best Servo Gauge
application/pdf 1.36 MB
2/24/2022
1.36 MB
2212200 HPS CAS Valero Dublin Customer Success Story A4
application/pdf 1.54 MB
12/5/2023
1.54 MB
Customize the smart servo with a host of options
application/pdf 1.15 MB
2/24/2022
1.15 MB
Make your best Servo, Even Better
application/pdf 186.41 KB
2/24/2022
186.41 KB
Helping you select the right technology for tank level gauging and custody transfer applications
application/pdf 1.23 MB
2/24/2022
1.23 MB
This brochure portrays a complete overview of our solutions for terminal automation
application/pdf 2.05 MB
3/9/2022
2.05 MB
Name
Description
File Size
Date
Size
The Industry's Best Servo Gauge
1.36 MB
2/24/2022
Customize the smart servo with a host of options
1.15 MB
2/24/2022
Make your best Servo, Even Better
186.41 KB
2/24/2022
This brochure portrays a complete overview of our solutions for terminal automation
2.05 MB
3/9/2022
Helping you select the right technology for tank level gauging and custody transfer applications
1.23 MB
2/24/2022
2212200 HPS CAS Valero Dublin Customer Success Story A4
1.54 MB
12/5/2023
Name
Description
File Size
Date
Size
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