Endress+Hauser TT511 Specifications

TI01135T/09/EN/02.14 71262402

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Technical Information

Industrial thermowell TT511

For Oil & Gas applications

Vanstone type, design with collar flange

Application

The thermowell will be used in applications with high process requirements. The predominant industries are Oil & Gas and Petrochemical. The process connection flange ist not welded on the thermowell stem but designed as collar flange. This special Vanstone thermowell design enables a wide variety of applications and is suitable for resistance and thermocouple thermometers.

Your benefits

• Solid thermowell, made of drilled barstock material.

• Fulfillment of various, industry specific requirements with a standard product. Flexible selection of immersion length and thermowell geometry according to the process specifications.

• In accordance with Shell specification: S.38.113 rev.D and S.38.114 rev.D

• Exact thermowell stress calculation ensuring safe plant operation.

• Vanstone design with outstanding cost effectiveness: – Reuse of the flange if the thermowell has to be replaced. – Use of a standard lap joint flange according to ANSI/ASME B16.5 and

EN 1092-1.

– Flexible selection of the flange material, independent from process conditions

and thermowell as it is not in contact with the process medium and it is not welded on.

– Reduced spare parts and storing concept: one flange can be used for a variety of

thermowells.

Function and system design

Industrial thermowell TT511

Device architecture

The TT511 Vanstone thermowell is designed as a special thermowell for thermometer installation (1). The thermowell shaft (5) and the flange (2) as the process connection are not interconnected. For installation in the process (6), the collar (3) of the thermowell is fitted between two flanges. The flange (2) on the thermowell side is a slip-on flange that is fitted onto the thermowell (2) and is bolted to the connection nozzle (4) on the process side. Many different flange versions are available to secure the unit to the permanently installed nozzle flange (4) on the process side. The thermowell is machined from solid bar stock.

A0021985

 1 TT511 design

Orientation

Installation instructions

Installation

No restrictions.

A0021995

Mounting the TT511

 2

The immersion length U of the thermowell can influence the accuracy. If the immersion length is too small, heat conduction via the process connection and the container wall can cause measurement errors in the installed thermometer. Therefore, if installing into a pipe the immersion length should

Industrial thermowell TT511

ideally be half of the pipe diameter. When determining the immersion length or installation depth, all parameters of the thermowell and the process to be measured must be taken into account (e.g. flow velocity, process pressure). The counterpieces for the process connections and the seals or sealing rings are not included in the scope of supply for the thermowell.

Installation possibilities: pipes, tanks or other plant components

Process

Process temperature range

Process pressure (static)

For the maximum operating temperatures, see the 'Material' section. (

Process connection Standard Max. process pressure

Flange EN1092-1 Depending on the flange pressure rating PN:

ASME B16.5 Depending on the flange pressure rating:

Permitted flow velocity depending on the immersion length

The maximum flow velocity tolerated by the thermowell diminishes with increasing thermowell immersion length exposed to the stream of the fluid. In addition, it depends on the shape and size of the thermowell, the medium type, process temperature and process pressure.

Thermowell sizing tool

It is possible to check the mechanical loading capacity as a function of the installation and process conditions online in the TW Sizing Module for thermowells in the Endress+Hauser Applicator software. See https://wapps.endress.com/applicator

, 63 bar, 100 bar or 160 bar.

40 bar

150 psi, 300 psi, 400 psi, 600 psi, 900 psi, 1500 psi, 2500 psi

→  7)

Mechanical construction

5 (0.2)

(0.28)

1 2

120 (4.72)

9 (0.35)

(0.55)

25 (0.98)

½“ NPT

!24

(0.95)

!0.2

Design, dimensions Vanstone thermowell, type 1

Industrial thermowell TT511

A0022004

All dimensions in mm (in)

 3

1 Version DN40 (NPS 1-½") or DN50 (NPS 2"), tapered 2 Version DN40 (NPS 1-½") for L > 300 mm (11.81 in): straight with tapered tip U Immersion length R Length of tapered tip L Standard length LT Complete thermowell length ML Insertion length TL Thread length N Extension neck length

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