RTD Sensor with Fabricated Flanged Thermowell

Product ID: RFA501

The RFA501 is a temperature assembly combining a spring loaded RTD sensor with a fabricated flanged thermowell. The RFA501 is designed for light to medium process conditions.

The RFA501 spring loaded temperature sensor is available as a 2, 3 or 4 wire Pt100 or Pt1000 in either simplex, duplex or triplex configuration. The accuracy class can be selected from 1/10 DIN, 1/5 DIN, 1/3 DIN, class A or class B.

This RTD assembly is available with an aluminium, stainless steel or plastic connection head which has a M20 x 1.5 cable entry. The sensor can be terminated with a ceramic terminal block, 4 to 20 mA transmitter or supplied with tails. There is also an option to specify a loop powered or battery powered indicator.

The RFA501 thermowell features a parallel stem profile, a seal welded flange and has wide variety of flange sizes and ratings available including RF, FF and RTJ configurations.

The fabricated RFA501 flanged thermowell is available in a wide selection of materials including 316 stainless steel, Alloy C276 (Hastelloy®), Alloy 400 (Monel®) and Alloy 600 (Inconel®).

There are a number of optional certification and testing services available including 3.1 material certificates to ensure full traceability, pressure testing and positive material identification (PMI).

The RFA501 RTD temperature sensor assembly is available with optional ATEX Exia (intrinsically safe), ATEX Exd (flameproof) or IECEx Exd (flameproof) hazardous area approval for use within Zones 0, 1, 2, 20, 21 and 22.

If the options provided by our industrial range don’t meet the precise requirements of your application, call our experts on +44 (0)1243 866 866 for a no-obligation consultation about a bespoke solution.

RTD Sensor with Fabricated Flanged Thermowell.
RTD SensorPt100 • Pt1000
Sensor ConfigurationSimplex • Duplex • Triplex
Sensor Wiring2 Wire • 3 Wire • 4 Wire
Sensor Class Class B • Class A • 1/3 DIN • 1/5 DIN • 1/10 DIN
Approvals*ATEX Exd II 2 GD • IECEx Exd II GD • ATEX Exia II 1 GD
Connection HeadAluminium • 316 Stainless Steel • Plastic
TerminationTerminal Block • Temperature Transmitter • Tails
Indicator*Battery Powered • Loop Powered
ExtensionNipple & Locknut • Nipple Union Nipple
Thermowell DesignFabricated
Flange Size1" • 1.5" • 2" • 2.5" • DN25 • DN40 • DN50 • DN80
Flange Rating150lb • 300lb • 600lb • 900lb • 1500lb • PN16 • PN25 • PN40
Flange Type Raised Face (RF) • Flat Face (FF) • Ring Type Joint (RTJ)
Material304 Stainless Steel • 310 Stainless Steel • 316 Stainless Steel • Alloy C276 • Alloy 400 • Alloy 600 • Alloy 601 • Alloy 625 • Alloy 800
Design TemperatureLow (-196°C to +100°C) • Standard (-50°C to +250°C) • High (-50°C to +650°C)

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John Good, Internal Sales Manager

+44 (0)1243 866 866