Brearley Thermocouple Assemblies
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RM&C offer Type-R, S and B thermocouples in a variety of wire diameters ranging from 0.15mm to 0.50mm (larger diameters may also be available). Thermocouples can be supplied as bare wire elements, ceramic insulated elements or sheathed thermocouple assemblies.
Ceramic Insulators
Element wires are insulated with recrystallised alumina insulators as standard. The insulator is normally a single continuous piece however shorter sectional insulating beads can be fitted if preferred.
Thermocouple Assemblies
The thermocouple elements are supplied fitted into ceramic closed end protection sheaths which in turn can then be fitted into a high temperature steel sheath if required. A wide range of thermocouple connection heads are available to complete the assembly.
Ceramic Protection Sheaths
RM&C offer ceramic closed end sheaths in aluminous porcelain, recrystallised alumina or silicon carbide. Aluminous porcelain is recommended for temperatures up to 1,400ºC and recrystallised alumina for temperatures up to 1,700ºC. Silicon carbide is recommended for temperatures up to 1,450ºC and is normally used as an outer protection sheath which requires an inner porcelain or alumina sheath to protect the element.
Metal Protection Sheaths
RM&C offer a number of high temperature steels for use as either closed end protection sheaths or as sockets to fix ceramic sheaths to connection heads. Stocked materials include stainless steels in 216 and 310 grades, inoconel 600 and 601, chrome/iron stainless steel 446 and sandvik 253MA nickel chrome. Where a metal protection is used, a ceramic inner sheath is normally used.
Process Connections
Flanged and threaded process fittings are available in carbon steel and stainless steel. These can be supplied as adjustable fittings or fixed welded. Cast iron adjustable flanges are also available.
Full Product Specification
TERMINATION HEADSCeramic terminal blocks are fitted as standard to all heads.
| Standard Single Head | General purpose die cast aluminium alloy head with hinged lid. |
| Weatherproof Single Head | Cast aluminium alloy head for outside applications and where liquid or moisture ingress is a problem. Incorporating threaded lid, seal, ¾" BSP process thread and 20mm ISO cable entry. The weatherproof single head is also available in cast iron. |
PROCESS CONNECTIONS
| Fixed Welded Process Adaptors | Available in carbon steel and stainless steel with parallel or tapered thread. |
| Adjustable Process Adaptors | Available in carbon steel and stainless steel with parallel or taper thread. |
| Flanges - Fixed Welded | Available in carbon steel and stainless steel to customer specifications. |
| Flanges - Adjustable Standard Sizes | 3" (76.20mm) cast iron |
| 4" (101.60mm) cast iron | |
| 5" (127.00mm) cast iron |
METAL PROTECTION SHEATHS
Inner impervious refractory sheath fitted on all noble metal thermocouples. Temperature limits subject to operational environment and thermocouple element type.
| 253 Cr Ni REM 1,100ºC temperature limit 3/4" NB x SCH 40 (26.67 x 20.93) 1/2" NB x SCH 40 (21.34 x 15.80) 5/8" OD x 1/2" ID (15.87 x 12.70) |
54 Cr Fe 1,150ºC temperature limit 3/4" NB x SCH 40 (26.67 x 20.93) 1/2" NB x SCH 40 (21.34 x 15.80) 1/2" OD x 1/4" ID (12.70 x 6.35) |
| 600 Ni Cr Fe 1,150ºC temperature limit 1" OD x 3/4" ID (25.40 x 19.05) 1/2" NB x SCH 40 (21.34 x 15.80) 5/8" OD x 1/2" ID (15.87 x 12.70) 1/2" OD x 3/8" ID (12.70 x 9.52) |
Stainless Steel Available in diameters: 3/8" to 1 1/4" (9.5mm to 32mm) |
| 601 Ni Cr Fe Al 1,250ºC temperature limit 1" OD x 3/4" ID (25.40 x 19.05) |
THERMOCOUPLE ELEMENT
| Noble Metal | Diameter | |
| Type-R¹ | 0.15mm | 0.35mm |
| 0.45mm | 0.5mm | |
| Type-S¹ | 0.15mm | 0.35mm |
| 0.45mm | 0.5mm | |
| Type-B² | 0.15mm | 0.35mm |
| 0.45mm | ||
| ¹Conductors conform to BS EN60584-2:1993 Class 1 tolerance | ||
| ²Conductors conform to BS EN60584-2:1993 Class 2 tolerance | ||
REFACTORY SOCKETS
Sheathed thermocouples only - available in mild steel and heat resisting steel.
| 2 3/4" diameter (57.15mm) |
| 1 3/8" diameter (34.92mm) |
| 1 5/16 diameter (1" nominal bore) (33.3mm) |
| 1 1/2" diameter (31.75mm) |
| 1 1/16" diameter (3/4" nominal bore) (26.98mm) |
| 3/4" diameter (19.05mm) |
| 5/8" diameter (15.87mm) |
| 1/2" diameter (12.70mm) |
REFACTORY PROTECTION SHEATHS
| Aluminous Porcelain* | |
| Temperature limit: 1,400ºC | Socket Size |
| 20mm OD x 15mm ID | 3 or 4 |
| 17mm OD x 13mm ID | 5 |
| 12mm OD x 8mm ID | 6 |
| 10mm OD x 7mm ID | 7 |
| 8mm OD x 5mm ID | 8 |
| Recrystalised Alumina | |
| Temperature limit: 1,800ºC | Socket Size |
| 20mm OD x 15mm ID | 3 or 4 |
| 17mm OD x 13mm ID | 5 |
| 12mm OD x 8mm ID | 6 |
| 10mm OD x 7mm ID | 7 |
| 8mm OD x 5mm ID | 8 |
| Silicon Carbide | |
| Temperature limit: 1,450ºC | Socket Size |
| 50mm OD x 25mm ID | 1 |
| 31mm OD x 15mm ID | 2 |
| 25mm OD x 15mm ID | 2 or 3 |
Temperature limit subject to operational environment and thermocouple element type.
* Not recommended above 1,200ºC for noble metal thermocouples.Recommended Products
Brearley Mineral Insulated Thermocouples
Brearley Mineral Insulated Thermocouples are metal sheathed cables with thermocouple conductors which are insulated from each other and the sheath by highly compacted magnesium oxide.
Conductors are safe from environmental contamination, ductile and highly responsive.
The cables are water, oil and gas resistant, extremely robust and are eminently suitable for applications where high or low temperature, corrosion, vibration, pressure and other extreme conditions exist.
Brealey Mineral Insulated Thermocouples can be designed and tested to comply with the requirements of AMS 2750D and NADCAP.
Data Recorder
As a technical partner of Eurotherm Systems®, RM&C can offer a wide range of process controlling and recording instrumentation. Whatever your application, call one of our technical sales specialists for advice on which unit or complete system would best suit your requirements.
Thermocouple Connectors
Standard and miniature connectors for use with thermocouples, compensating cable and extension wires enabling connection without introducing spurious thermal e.m.f.'s. Uncompensated copper miniature connectors are also available.
UKAS and Traceable Calibration
Roxspur Measurement & Control Ltd is an ISO 9001:2008 company, we offer UKAS and traceable calibration under BS/EN ISO17025 accredited procedures. Our certificate generation systems are purposely geared to meet the strict and specific requirement of the Aerospace industry.
Calibration
Based at our factory in Sheffield our accredited laboratories are available to provide either on-site or in-house calibration to either UKAS or national standards. We cover Temperature (up to 2,200ºC), Pressure (up to 1,200 bar), Flow (up to 2,500 L/min) and Electrical parameters and provide certification using the latest technology.
Our team of experienced on-site engineers hold accreditation for the on-site calibration of equipment including autoclaves, furnaces, thermocouples and probes, scales and balances, ovens and chambers, indicators and controllers, pressure and electrical. We cover the full spectrum of industry sectors. All calibration standards used meet the requirements of Table 3 of AMS 2750D, whether in the laboratory or on site, ensuring full compliance with the specification. To find out more about our on-site services please click here.
We supply thermocouples calibrated and certified to meet the requirements of Table 1 of AMS 2750D appropriate to customer specified usage.
Aerospace Heat Treatment Specialists
From the supply of a single thermocouple to fully managed service contracts, by working in partnership with our customers we can assist in obtaining and maintaining NADCAP approval. To find out more about our specialist aerospace services please click here.
Certification
Certificates generated are designed to meet the requirements of AMS 2750D with the option of UKAS certificates for added peace of mind.
Brearley Mineral Insulated Thermocouples
Brearley Mineral Insulated Thermocouples are metal sheathed cables with thermocouple conductors which are insulated from each other and the sheath by highly compacted magnesium oxide. Conductors are safe from environmental contamination, ductile and highly responsive.
The cables are water, oil and gas resistant, extremely robust and are eminently suitable for applications where high or low temperature, corrosion, vibration, pressure and other extreme conditions exist.
Brealey Mineral Insulated Thermocouples can be designed and tested to comply with the requirements of AMS 2750D and NADCAP.
Data Recorder
As a technical partner of Eurotherm Systems®, RM&C can offer a wide range of process controlling and recording instrumentation. Whatever your application, call one of our technical sales specialists for advice on which unit or complete system would best suit your requirements.- Process controllers and indicators
- Graphic recorders
- Stand alone or network solutions
- SCADA and data acquisition packages
- Small/large frame paper recorders
- Complete system solutions
Thermocouple Connectors
Standard and miniature connectors for use with thermocouples, compensating cable and extension wires enabling connection without introducing spurious thermal e.m.f.'s. Uncompensated copper miniature connectors are also available.- Colour coded to IEC and National standards
- Suitable for all thermocouples
- Polarised connectors
UKAS and Traceable Calibration
Roxspur Measurement & Control Ltd is an ISO 9001:2008 company, we offer UKAS and traceable calibration under BS/EN ISO17025 accredited procedures. Our certificate generation systems are purposely geared to meet the strict and specific requirement of the Aerospace industry.Calibration
Based at our factory in Sheffield our accredited laboratories are available to provide either on-site or in-house calibration to either UKAS or national standards. We cover Temperature (up to 2,200ºC), Pressure (up to 1,200 bar), Flow (up to 2,500 L/min) and Electrical parameters and provide certification using the latest technology.
Our team of experienced on-site engineers hold accreditation for the on-site calibration of equipment including autoclaves, furnaces, thermocouples and probes, scales and balances, ovens and chambers, indicators and controllers, pressure and electrical. We cover the full spectrum of industry sectors. All calibration standards used meet the requirements of Table 3 of AMS 2750D, whether in the laboratory or on site, ensuring full compliance with the specification. To find out more about our on-site services please click here.
We supply thermocouples calibrated and certified to meet the requirements of Table 1 of AMS 2750D appropriate to customer specified usage.
Aerospace Heat Treatment Specialists
From the supply of a single thermocouple to fully managed service contracts, by working in partnership with our customers we can assist in obtaining and maintaining NADCAP approval. To find out more about our specialist aerospace services please click here.
Certification
Certificates generated are designed to meet the requirements of AMS 2750D with the option of UKAS certificates for added peace of mind.
