Products

General Specifications and Further Information

Process Connections
Feedthrough bodies can be specified with a choice of threaded process connections. Feedthroughs with the common tapered threadforms, BSPT (conical gas thread or ‘R’ thread) to BS21, DIN 2999 ISO 7/1 & JIS B0203 and NPT (national pipe tapered thread) to ANSI/ASME B1.20.1 are generally stocked items.

Feedthroughs with parallel threaded process connections, BSPP (parallel gas thread or ‘G’ thread) to BS2779, DIN ISO 228/1 & JIS B0202 UNF/UNEF to ANSI/ASME B1.20.1, PG to DIN 40430, ET to BS31 and ISO metric to DIN13, may also be specified. Feedthroughs with parallel mounting threads need an ‘O’ ring or a gasket seal (not supplied) to prevent leakage at the process connection.

Installation Guidelines:
Stand-Off Length:

Our sensors are passive units and are not self-heating. However heat transfer along the sheath shall be considered when positioning the sensor in the process to maintain the temperature rating of the end seal termination. See value L2 shown on the typical installation diagram. The below table gives guidance for stand-off length based on the process temperature(1).

T Class:

All the sensors and feedthroughs shown on this catalogue can be used with service temperatures up to 1250ºC dependant on the sheath material used. Typically the hazardous area protection concept is applied to the portion of the assembly outside the process boundary as shown below. When selecting the appropriate sensor design for your application, overall temperature class shall be determined by either:
(a) determined by process temperature as stated in the table below.
Or (b) The temperature class may be determined by temperature measurement on the actual installation. This must be performed when no flammable atmosphere is present. The overall temperature class of the assembly shall be established at the point of exit through the boundary wall into the zoned area.To ensure safe use both calculations (stand-off length to maintain end seal rating and overall t class of assembly) shall be considered.

(1) The values given are considered “worst-case” for assemblies in a vertical installation. If method (b) is used to calculate overall t class then shorter stand-off lengths may also be considered by the same method.
(2) Values for a standard resin filled pot seal with 90ºC rating. High temperature pot seals can achieve shorter stand-off lengths which shall be calculated by temperature measurement on the actual installation as per method (b) above.
(3) Terminal head terminations have a maximum rating of 60ºC .



If you are in any doubt about whether your application meets the requirements of any of the mentioned standards in this catalogue, TC Ltd recommend that independent advice be taken from the appropriate approving body. The technical data and guideline information presented in this publication is provided in good faith; however, no warranty, express or implied is given whatsoever as to its accuracy, and no liability is accepted for any errors or omissions. The suitability of any products described herein for a particular application is entirely at the discretion of the purchaser as being the best judge for that particular application.

BACK TO TOP
Products

Contact Us

About TC

FREE Guide

Privacy Policy

Terms and Conditions

Sitemap
FREE Wallchart Guide to
Thermocouples and RTD Sensors


Join over 500,000 engineers and buyers who have already received our FREE 74 page A3 Guide to Thermocouple and Resistance Thermometry

Company Name
  Address 1
Your Name
  Address 2
Title / Dept.
  County / Region / State
Email
  Postcode / ZIP Code
Telephone
  Country
Company Name
Your Name
Title / Dept.
Address 1
Address 2
County / Region / State
Postcode / ZIPCode
Country
Email
Telephone

We will only ever use the information you provide to occasionally contact you regarding our products and we will never disclose your details to a third party. Our privacy policy can be viewed here



I agree to the terms and conditions listed in the Privacy Policy

View our ISO 90001/2008 Certficate
View our ISO 90001/2008 Certficate







Thermocouple Sensors
Mineral Insulated Thermocouples
Thermocouples with Mini Plug
Thermocouples with Terminal Head
Thermocouples with Cable
High Temperature Thermocouples
General Purpose Thermocouples
ATEX/IECex Thermocouple Sensors
Ceramic Thermocouple Sensors
Fast Response Thermocouple Sensors
Autoclave Thermocouple Sensors
Surface Measurement Thermocouple Sensors
FEP Insulated Thermocouple

Platinum Resistance Thermometers
Mineral Insulated RTD Pt100 Sensors
Rigid Stem RTD Pt100 Sensors
Hand Held RTD Pt100 Sensors
Surface Measurement RTD Pt100 Sensors
RTD Pt100 Sensors with Cable
RTD Pt100 Sensors with Mini Plug
Autoclave RTD Pt100 Sensors
RTD Pt100 with Terminal Head
ATEX/IECex Platinum Resistance Thermometers
Fast Response RTD Pt100 Sensors
Air Temperature RTD Pt100 Sensors
Magnetic RTD Pt100 Sensors
Cable
PVC Single Pair Thermocouple Cable
PFA Single Pair Thermocouple Cable
Fibreglass Single Pair Thermocouple Cable
PVC Multipair Thermocouple Cable
PFA Multipair Thermocouple Cable
Fibreglass Multipair Thermocouple Cable
PVC RTD Pt100 Cable
PFA RTD Pt100 Cable
Fibreglass RTD Pt100 Cable

Miniature Thermocouple Connectors
Mini Thermocouple Connectors – 220ºC Rated
Mini Thermocouple Connectors – 350ºC Rated
Mini Thermocouple Connectors – 650ºC Rated
Mini Thermocouple Connector Accessories
Mini Thermocouple Connector Panels
Mini Three Pin Connectors

Standard Thermocouple Connectors
Standard Thermocouple Connectors – 220ºC
Standard Thermocouple Connectors – 350ºC Rated
Standard Thermocouple Connectors – 650ºC Rated
Standard Thermocouple Connector Accessories
Standard Thermocouple Connector Panels
Standard Three Pin Connectors
Instrumentation
Hand Held Indicators
Panel Indicators
Temperature Transmitters
Temperature Controllers
Temperature Programmers
Temperature Calibrators
Chart Recorders
Multi Channel Indicator
DIN Rail Mounted Transmitters
Head Mounted Transmitters
ATEX/IECEx Rated Transmitters
Dry Block Calibrator
Temperature Dataloggers

Temperature Accessories
Compression Fittings
Pressure and Vacuum Feedthroughs
ATEX/IECEx Compression Fittings

Calibration
UKAS Calibration Services

Pressure
Pressure Gauges
Pressure Transmitters


© 1998- TC Ltd., P.O. Box 130, UXBRIDGE, UB8 2YS, United Kingdom
Tel.: 01895 252222, Fax: 01895 273540, Email: info@tc.co.uk
© 1998- TC Ltd., P.O. Box 130, UXBRIDGE, UB8 2YS, United Kingdom
Tel.: 01895252222, Fax: 01895 273540, Email: info@tc.co.uk