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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

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 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)
  • 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)
  • Analog Output Specification
    • SIL AO NAMUR NE43 compliant

Environmental Safety

  • 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
  • Storage Temperature Range
    • -50 to +70 deg C (-58 to +158 deg F)
  • Ambient Temperature Range
    • -40 to +65 deg C (-40 to +149 deg F)
  • Protection Class
    • IP6 /IP67 according to EN 60529 (NEMA 4X)
  • Approvals
    • SIL-by-design (IEC 61508), ATEX, IECEx, FM, CSA, KOSHA, INMETRO, NMi, OIML R85

Instrument Measuring Specification

  • 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)
  • 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
  • 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)
  • Repeatability
    • ≤ 0.1 mm (±0.004 in)
  • Sensitivity
    • ≤ 0.1 mm (±0.004 in)
  • Density
    • Available with density firmware and density displacer

Process Wetted Materials

  • Measuring Drum/Drum Shaft
    • 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)
  • 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
  • Magnet Cap
    • Stainless Steel (1.4401) EN10088 AISI 316

General

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

Mechanical

  • 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.)
  • Weight
    • Chemical version -21 kg (46 lb)
    • High pressure version -26 kg (57 lb)
    • Medium pressure version -16 kg (35 lb)

Migration Option

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

Electrical

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

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 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)
  • 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)
  • Analog Output Specification
    • SIL AO NAMUR NE43 compliant

Environmental Safety

  • 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
  • Storage Temperature Range
    • -50 to +70 deg C (-58 to +158 deg F)
  • Ambient Temperature Range
    • -40 to +65 deg C (-40 to +149 deg F)
  • Protection Class
    • IP6 /IP67 according to EN 60529 (NEMA 4X)
  • Approvals
    • SIL-by-design (IEC 61508), ATEX, IECEx, FM, CSA, KOSHA, INMETRO, NMi, OIML R85

Instrument Measuring Specification

  • 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)
  • 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
  • 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)
  • Repeatability
    • ≤ 0.1 mm (±0.004 in)
  • Sensitivity
    • ≤ 0.1 mm (±0.004 in)
  • Density
    • Available with density firmware and density displacer

Process Wetted Materials

  • Measuring Drum/Drum Shaft
    • 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)
  • 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
  • Magnet Cap
    • Stainless Steel (1.4401) EN10088 AISI 316

General

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

Mechanical

  • 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.)
  • Weight
    • Chemical version -21 kg (46 lb)
    • High pressure version -26 kg (57 lb)
    • Medium pressure version -16 kg (35 lb)

Migration Option

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

Electrical

  • Power Supply
    • Autoselect 65 to 240 VAC, 50/60 Hz and/or 24 to 65 VDC
  • Power Rating
    • 11 Wmax continuously
  • Inputs : VITO Temperature/Water Probe, Spot RTD (up to 6 elements), HART® Inputs (up to 5)
  • 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)
  • 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)
  • Analog Output Specification : SIL AO NAMUR NE43 compliant
  • 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
  • Storage Temperature Range : -50 to +70 deg C (-58 to +158 deg F)
  • 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)
  • Measuring Drum/Drum Shaft : Stainless Steel (1.4401) EN10088 AISI 316
  • Ambient Temperature Range : -40 to +65 deg C (-40 to +149 deg F)
  • Measurement Capabilities : Product Level, Interface Level, Density, Water Bottom, Temperature (Spot/Average/Profile)
  • 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)
  • 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
  • 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
  • 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)
  • Protection Class : IP6 /IP67 according to EN 60529 (NEMA 4X)
  • Migration Option : • Enraf Servo 854 ATG to Servo 954 hardware migration/upgrade kit
  • 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)
  • 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
  • Repeatability : ≤ 0.1 mm (±0.004 in)
  • 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.)
  • Power Supply : Autoselect 65 to 240 VAC, 50/60 Hz and/or 24 to 65 VDC
  • Power Rating : 11 Wmax continuously
  • Sensitivity : ≤ 0.1 mm (±0.004 in)
  • Magnet Cap : Stainless Steel (1.4401) EN10088 AISI 316
  • Approvals : SIL-by-design (IEC 61508), ATEX, IECEx, FM, CSA, KOSHA, INMETRO, NMi, OIML R85
  • Density : Available with density firmware and density displacer
  • Weight : Chemical version -21 kg (46 lb)|High pressure version -26 kg (57 lb)|Medium pressure version -16 kg (35 lb)
Brochure
Name
Description
File Size
Date
Size
Enraf Smart Servo 954 Brochure
The Industry's Best Servo Gauge
application/pdf 1.36 MB
2/24/2022
1.36 MB
Enraf Smart Servo 954 Selection Guide
Customize the smart servo with a host of options
application/pdf 1.15 MB
2/24/2022
1.15 MB
Enraf Smart Servo Migration Flyer
Make your best Servo, Even Better
application/pdf 186.41 KB
2/24/2022
186.41 KB
Terminal Automation Solutions Brochure
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
Whitepaper - Servo V/s Radar
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
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
Enraf Smart Servo 954 Brochure
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
2212200 HPS CAS Valero Dublin Customer Success Story A4
application/pdf 1.54 MB
12/5/2023
1.54 MB
Enraf Smart Servo 954 Selection Guide
Customize the smart servo with a host of options
application/pdf 1.15 MB
2/24/2022
1.15 MB
Enraf Smart Servo Migration Flyer
Make your best Servo, Even Better
application/pdf 186.41 KB
2/24/2022
186.41 KB
Whitepaper - Servo V/s Radar
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
Terminal Automation Solutions Brochure
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
Enraf Smart Servo 954 Brochure
The Industry's Best Servo Gauge
1.36 MB
2/24/2022
Enraf Smart Servo 954 Selection Guide
Customize the smart servo with a host of options
1.15 MB
2/24/2022
Enraf Smart Servo Migration Flyer
Make your best Servo, Even Better
186.41 KB
2/24/2022
Terminal Automation Solutions Brochure
This brochure portrays a complete overview of our solutions for terminal automation
2.05 MB
3/9/2022
Whitepaper - Servo V/s Radar
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
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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