iTherm TT511

Summary

Industrial thermowell TT511

Application

The TT511 is an industrial thermowell designed for demanding applications, primarily in the Oil & Gas and Petrochemical industries. It features a Vanstone design with a collar flange, meaning the process connection flange is not welded to the thermowell stem, allowing for flexible use with various resistance and thermocouple thermometers.

Your Benefits

• Constructed from solid drilled barstock material.
• Meets industry-specific requirements with a standard product.
• Flexible selection of immersion length and thermowell geometry.
• Complies with Shell specifications S.38.113 rev.D and S.38.114 rev.D.
• Offers cost-effectiveness through flange reuse and independent material selection for the flange.
• Reduces spare parts and inventory needs.

Function and System Design

The TT511 is a special thermowell designed for thermometer installation. The thermowell shaft and the process connection flange are separate components. During installation, the thermowell's collar is fitted between two flanges. The flange on the thermowell side is a slip-on type bolted to the process connection nozzle.

Installation

• Orientation: No restrictions.
• Installation Instructions: The immersion length (U) can influence measurement accuracy. For pipes, the immersion length is ideally half the pipe diameter. All relevant process parameters must be considered when determining installation depth. Counterpieces for process connections and seals are not included.

Process

• Process Temperature Range: Refer to the 'Material' section for maximum operating temperatures.
• Process Pressure (static):
  • Flange EN1092-1: 40 bar, 63 bar, 100 bar, or 160 bar, depending on flange pressure rating.
  • Flange ASME B16.5: 150 psi, 300 psi, 400 psi, 600 psi, 900 psi, 1500 psi, 2500 psi, depending on flange pressure rating.
• Permitted Flow Velocity: Diminishes with increasing immersion length exposed to the flow. It is also dependent on thermowell shape, medium type, process temperature, and pressure.
• Thermowell Sizing Tool: Available online via the Endress+Hauser Applicator software for mechanical loading capacity calculations.

Mechanical Construction

Dimensions (Type 1: Vanstone thermowell)

• Versions: DN40 (NPS 1-½") and DN50 (NPS 2").
• Dimensions: Various lengths (L, LT, U, R, ML, TL, N) and diameters (⌀A, ⌀B, ⌀Q1, ⌀Q2) are specified for different configurations.
• Insertion Length (ML) Calculation: ML = LT - 19 mm (0.75 in)

Dimensions (Type 2: Vanstone thermowell)

• Versions: DN25 and DN50.
• Dimensions: Various lengths (L, U, ML) and diameters (Q1, Q2) are specified.
• Insertion Length (ML) Calculation: ML = L + 5 mm (0.197 in)

Weight: Variable, depending on version and standard length. Examples include:

• DN40 (NPS 1½"): 1.9 kg (4.2 lb) with L = 305 mm (12 in)
• DN40 (NPS 2"): 2.3 kg (5 lb) with L = 230 mm (9.05 in)
• DN25 (round tip): 0.6 kg (1.32 lb) with L = 300 mm (11.81 in)
• DN50 (round tip, welded collar): 1.1 kg (2.43 lb) with L = 300 mm (11.81 in)

Material

• AISI 316/1.4401: Recommended max. temperature 650 °C (1,202 °F). Properties: Austenitic, stainless steel with high corrosion resistance.
• AISI A105/1.0460 (C22.8): Recommended max. temperature 450 °C (842 °F). Properties: Heat-resistant steel, suitable for boilers and steam pipes.
• AISI 316Ti/1.4571: Recommended max. temperature 700 °C (1,292 °F). Properties: Increased resistance to intergranular corrosion, broad use in chemical and petrochemical industries.

Process Connection

• Flanges: Standard lap joint flanges according to ASME B16.5 for DN40/DN50 and special design flanges similar to DIN EN 1092-1.
• Dimensions: Detailed dimensions for flanges according to ASME B16.5 and DIN EN 1092-1 are provided in tables for DN25, DN40, DN50, and DN80.

Certificates and Approvals

• PED Approval: Complies with Pressure Equipment Directive 97/23/EC.
• Material Certification: Material certificate 3.1 (EN 10204) is optional.
• Canadian Registration Number (CRN): CRN-No: OF16064.5, applicable for specific nominal diameters and standard lengths.
• Tests:
  • Helium leak test (EN 1779)
  • Hydrostatic pressure test (max. 400 bar / 5,801 psi, without flanges)
  • Positive material identification (PMI) test
  • Load capacity calculation (DIN 43772 or ASME PTC19.3)
  • Dye penetration test (ASME V and EN571-1)
  • Bore concentricity test
  • Radiographic test (ASME V, VIII, TW welding)

Ordering Information

Detailed ordering information is available through the Endress+Hauser Product Configurator on their website or from their Sales Centers.

Accessories

• Applicator: Software for selecting and sizing measuring devices.
• Konfigurator+temperature: Software for configuring temperature measuring points.
• W@M: Life cycle management software for plant assets.
• FieldCare: FDT-based plant asset management tool.

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Disclaimer: This extraction may miss figures, footnotes, or revisions. Contractual data must match the OEM PDF revision used on the project.

Official datasheet (PDF)

Lenntech datasheet mirror