RTD Sensor with Solid Drilled SMS Hygienic Thermowell

Product ID: RHA140

The RHA140 is a hygienic temperature assembly combining a spring loaded RTD sensor and solid drilled SMS thermowell. This heavy duty construction is designed for use within applications involving high pressures and flow rates.

The RHA140 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 SMS hygienic 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 loop powered or battery powered indicator.

The RHA140 hygienic thermowell is available with either a parallel or tapered stem profile and has wide variety of process thread connections available.

In order to determine or prove the suitability and required dimensions of a thermowell based on the process conditions, we offer wake frequency calculations as per ASME PTC 19.3 TW-2016. In addition there are a number of other certification and testing services available including 3.1 material certificates, pressure testing and positive material identification (PMI).

The RHA140 hygienic RTD SMS temperature sensor is additionally available with ATEX Exia, IECEx Exia, UKCA Exia (intrinsically safe), ATEX Exd, IECEx Exd or UKCA 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 Solid Drilled SMS Hygienic 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
ApprovalsATEX Exd II 2 GD • IECEx Exd II GD • UKCA Exd II 2 GD • ATEX Exia II 1 GD • IECEx Exia II 1 GD • UKCA Exia II 1 GD
Connection HeadAluminium • 316 Stainless Steel • Plastic
TerminationTerminal Block • Temperature Transmitter • Tails
IndicatorBattery Powered • Loop Powered
ExtensionNipple & Locknut • Nipple Union Nipple
Thermowell DesignSolid Drilled
Stem ProfileParallel • Tapered
SMS Size1" • 1.5" • 2" • 2.5" • 3" • 4"
Material316 Stainless Steel
Design TemperatureLow (-196°C to +100°C) • Standard (-50°C to +250°C) • High (-50°C to +650°C)

Need Help? Ask Our Experts

Our staff are fully trained to offer comprehensive, and specialist advice on our range of products. Whether you’re not sure what you’re looking for, or you need something highly specialised, give us a call and we’ll be happy to discuss your requirements.

Portrait of John Good.

John Good, Internal Sales Manager

+44 (0)1243 866 866

Connect on LinkedIn

Request a Callback

Send us your details and we’ll be happy to call you back at a time that suits you.

All information will be treated as strictly confidential and we’ll only ask you for the information we need to answer your query. For more information on how we protect our clients, see our Privacy Statement.