TKMISTD-15-1500-SP

## [@][Electronics] **Temperature** 

## **Brearley Mineral Insulated Thermocouples** 

## **Product Data Sheet  DS3010** 

## **Mineral Insulated Thermocouples** 

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. 

## **Advantages** 

**==> picture [121 x 12] intentionally omitted <==**

**----- Start of picture text -----**<br>
Hot End Junctions<br>**----- End of picture text -----**<br>


**==> picture [32 x 185] intentionally omitted <==**

**----- Start of picture text -----**<br>
IJ<br>Insulated<br>BJ<br>Bonded<br>EJ<br>Exposed<br>ExJ<br>Extended<br>SJ<br>Skin Pad<br>RJ<br>Reduced<br>**----- End of picture text -----**<br>


- Rapid response - due to small thermal capacity of conductor bead and high thermal conductivity of insulant 

- Ductile - can be easily bent or formed 

- Completely immune from thermal shock 

- Small overall diameters 

- Very high insulation resistance 

- Unaffected by pressure - can be glanded through bulkheads or pressure vessel walls. 

- Extensive range of diameter, conductor and sheath combinations. 

- Available in simplex or duplex options 

- Can be used in standard units in place of insulated wire elements. 

Cold end sealants available to cover temperature range of 105°C - 300°C. 

High temperatures can be covered with cement type seals.  Standard tails are flexible 75mm long with PTFE covering.  Special tail wire can be supplied i.e. with fibre glass, PVC, metal braided coverings etc. 

## **Cold End Terminations** 

**==> picture [202 x 254] intentionally omitted <==**

**----- Start of picture text -----**<br>
Threaded pot, crimped-on, 8mm ISO - up to 3mm Dia MI<br>Plain pot, crimped-on, 7mm Dia - up to 3mm Dia MI<br>Plain pot, crimped-on, 11mm Dia - 6mm Dia MI<br>Se<br>Plain pot, crimped-on, 9.5mm Dia x 25mm Long<br>——$—SSSS<br>Special seals to customer requirements<br>ee<br>Plain Pot, for thick wall MI<br>“—<br>Miniature plug or socket, flat pin —<br>Standard plug or socket, round pin, available also in ceramic<br>**----- End of picture text -----**<br>


**DS3010** 

**Page 1 of 2** 

## **Standard Metal Sheath Materials** 

## **TYPE S** 

## **TYPE I** 

## **18/8/1 Stainless Steel / Chrome / Nickel / Titanium Grade 321** 

Excellent resistance to corrosion.  Retaining good ductility in a wide range of industrial applications. Max temperature 800°C 

## **TYPE W** 

## **25/20 Stainless Steel/Chrome/Nickel Grade 310** 

Good high temperature corrosion resistance.  Suitable for use in sulphur bearing atmospheres but should  not be subjected to subsequent manipulations. Max temperature 1100°C 

## **76/16/7 Inconel / Nickel / Chrome / Iron type 600** 

Excellent corrosive and oxidation resistant at elevated temperatures.  Should not be used in Sulphur bearing atmospheres above 550°C Max temperature 1100°C 

## **TYPE N** 

## **84/14/1 Nicrosil / Nickel / Chrome/ Silicon** 

Used with type  N conductors for 1200°C plus.  High oxidation resistance reduces calibration drift at temperature when used in non-carburising atmospheres. Max temperature 1250°C 

## **Standard Thermocouple Alloy Conductor Types** 

|**Code**|**Conductor Combination**|**Recommemded Operating Temperature**<br>**Range for Conductor Combinations**<br>**Continuous °C**<br>**Short Term °C**|
|---|---|---|
|**K**<br>**T**<br>**J**<br>**N**<br>**E**|Nickel Chromium vs Nickel Aluminium<br>Copper vs Constantan<br>Iron vs Constantan<br>Nickel-Chromium-Silicon vs Nickel-Silicon-Magnesium<br>Nickel Chromium vs Constantan|0 to +1100<br>-180 to +1350<br>-185 to +300<br>-250 to +400<br>+20 to +700<br>-180 to +750<br>0 to +1100<br>0 to +1300<br>0 to +800<br>-|



## **Sheath Diameters** 

## **How to order** 

With reference to Standard Sheath Materials 

|**T/C Type**<br>**Cable Diameters (mm)**<br>**0.5**<br>**1.0**<br>**1.5**<br>**2.0**<br>**3.0**<br>**T**<br>-<br>S<br>S<br>-<br>S<br>**N**<br>-<br>I,N<br>I,N<br>I<br>I,N<br>**J**<br>-<br>S<br>I,S<br>I,S<br>I,S<br>**K**<br>I,S<br>I,S,W<br>I,S,W,N<br>I,S,W<br>I,S,W,N<br>**4.5**<br>**5.5**<br>**6.0**<br>**10.8**<br>**T**<br>S<br>-<br>S<br>-<br>**N**<br>I<br>-<br>I,N<br>-<br>**J**<br>I,S<br>-<br>I,S<br>I<br>**K**<br>I,S,W<br>I,W<br>I,S,W,N<br>I,W<br>See above for material type.|**Example**<br>Conductor type<br>Type K<br>Simplex or duplex<br>Simplex<br>Sheath material<br>25/20<br>Sheath diameter<br>3mm<br>Route or length of<br>insulation<br>300mm<br>Type of hot junction<br>IJ (insulated)<br>Cold end termination<br>8mm ISO<br>Tail type<br>Flex PTFE<br>Tail length<br>75mm<br>Fittings<br>Brass Pressure ¼" BSPT|
|---|---|



Every effort has been made during the preparation of this document to ensure the accuracy of statements and specifications.  However, we do not accept liability for damage, injury, loss or expense caused by errors or omissions made.  We reserve the right to withdraw or amend products or documentation without notice. 

2 Downgate Drive, Sheffield, S4 8BT, England Tel: +44(0)114 244 2521      Fax: +44(0)114 243 4838 

04JOCSW0115 

**DS3010** 

**Page 2 of 2**