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Thermocouple & RTD Assembly for Surface Measurement Type

Thermocouple & RTD Assembly for Surface Measurement Type

Thermocouple & RTD Assembly for Surface Measurement Type

Product catalog summary
Overview: The TCT870 is a thermometric assembly designed for surface temperature measurement, particularly on steam pipes, vessels, and reactors. It is suitable for use in explosive environments and is ATEX certified.
Applications: The device is used for measuring surface temperatures on steam pipes, vessel walls, and flat surfaces. It is also suitable for explosive environments.
Description: The TCT870 features a single thermocouple sensor within a flexible metal sheath. It includes a connection head, with optional lag extension and process connection. The sheathed cable compensates for thermal expansion and protects against vibration.
Options: Temperature probes can be equipped with temperature transmitters, either analogue or digital (HART® or PROFIBUS®), mounted in the connection head or remotely.
Ordering Information: Specify model, sensor type, range, and options. Example: TCT870-“j”-0/500-WELD PAD– 4/20mA “HART”.
Operating Conditions: Permissible temperatures range from -130°C to +1100°C depending on sensor type. The maximum operating pressure varies with the use of sealing compression fittings.
Precision Classes: The device offers different precision classes based on temperature ranges and sensor types, with specific tolerances outlined.
Connection Head: Features an internal terminal board and is available in standard and EExd versions, with varying degrees of protection (IP 54 to IP 65).
Sheath: The sensor is embedded in MgO powder within a metal sheath, which can be bent to a limited radius. The sheath diameter affects the minimum pipe diameter for installation.
Installation: Compatibility of materials for the knife edge and weld pad with the installation surface is crucial.
Explosive Environments: The assembly must be installed in specific zones with thermowells separating different zones. The system includes a flameproof enclosure and intrinsic safety features.
Safety and Compliance: The device complies with EN 60079 standards for explosive environments, and PCI is not responsible for non-compliant applications.
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Catalog excerpts

Thermocouple & RTD Assembly for Surface Measurement Type-1

Data sheet Date Page THERMOMETRIC ASSEMBLY FOR SURFACE MEASUREMENT TYPE TCT870 Thermocouple probes for surfaces temperatures. APPLICATIONS • • • Surface temperature measurement on steam pipes, inside or outside vessels and reactors Temperature measurement on walls or flat surfaces Special executions for explosive environments ATEX certified : 0496 DESCRIPTION These PCI “Thermo-Sensor“ probes are provided with a single thermocouple sensor, placed inside a flexible metal sheath. With connection head, with or without lag extension, process connection on request. Sealing if necessary by a compression fitting on the sheathed cable. The spirals of the sheathed cable serve to compensate the dimensional changes due to thermal expansion between the measuring point and the process connection or the connection head fixation. They also protect against a cable failure due to vibration. For explosive environments, executions meeting the requirements of EN 60079-0 “Electrical apparatus for potentially explosive atmospheres (general requirements)”, EN 60079-1 (flameproof enclosure “d”) or EN 60079-11 (intrinsic safety “i”) are available OPTIONS Temperature probes may be assembled on request with temperature transmitters directly mounted into the connection head or remote analogue digital “HART”® or “PROFIBUS” ® HOW TO ORDER Please specify: model, type of sensor, range, type of sensor, options if any Example “HART” _______________________________________________________________________________________________ PCI (Process System Solutions) Ltd, Unit 7 Slaidburn Crescent, Southport, Merseyside, PR9 9YF, UK, Tel: +44 (0) 1704 509090, Fax: +44 (0) 1704 509091, email: [email protected], Website: www.pci-instruments.com (Specifications are subject to change without notice)

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Thermocouple & RTD Assembly for Surface Measurement Type-2

Data sheet Date Page Sheath dia. 8 mm 3/8” (9.53 mm) 1/2” (12.70 mm) THERMO SENSOR 1. Operating conditions Permissible temperatures (°C) at measuring point -130 (type J)/ + 1100 (type K) Permissible temperature at process connection + 150 °C Ambient temperature at connection head 0...+ 80 °C Maximum operating pressure in the lag extension without sealing compression fitting with sealing compression fitting The knife edge execution gives the best thermal contact, but requires specific attention and skill for welding 5. Installation It is namely important that the material of the knife edge and...

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