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You are here → Home > AMS2750 Approved Thermocouples > Vacuum > AMS2750 Approved Vacuum Thermocouple with For 'A' Alloy Head

Vacuum Thermocouple with Form 'A' Flip Top Die Cast Alloy Head

AMS2750 Approved Thermocouples for Vacuum Furnaces

Send Enquiry Request Info Data Sheet

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Ceramic Sheathed Vacuum Thermocouples
Type 40/41 thermocouple assemblies incorporate an integral Spectite® seal and are ideal for vacuum furnace applications. The Spectite® vacuum seal is rated to 5 x 10-6 torr with low leak rates (better than or equal to 1 x 10-6 scc/sec. under 1 Atm @ 20ºC). These thermocouples can be supplied to all recognised standards and tolerances when combined with our UKAS calibration services. They are available in simplex and duplex junction styles with an optional test sensor hole for calibration / survey work. A wide range of support tube fittings for attachment into the process is available.
  • Vacuum seal rated 5 x 10-6 torr
  • Low leak rates
  • Integral Spectite® seal on internal wires maintains vacuum even if sheath is damaged
  • Wide operating temperature range up to 1600°C
  • Optional test sensor hole for calibration or system accuracy tests (SAT) without removal from process
  • Wide range of attachments for process installation
  • Simplex and Duplex versions available
  • UKAS and In-House calibration options available to all major international and industry specific standards
  • Flexible tagging options available for clear traceability
Calibration Accuracies:

Code Standard Accuracy Supplied Certification
IEC1 IEC 60584.1 Class 1 Types K/N: ±1.5ºC (-40 to +375ºC) or 0.4% (375 to 1000ºC)
Types R/S: ±1.0ºC (0 to 1100ºC) or 1ºC + 0.3% of temperature above 1100ºC (1100 to 1600ºC)		 TC Ltd offer both UKAS and In-House (traceable to national standards) calibrations to all major international standards up to 1590°C. Our laboratory is fully accredited to ISO17025 and our reports are designed with the requested standard in mind. Our sales engineers are on hand to discuss any requirements so please do not hesitate to contact us for more details.
AMS1 AMS2750 Types K/N: ±1.1ºC or 0.4%
Types R/S: ±1.0ºC or 0.25%
(whichever is greater)
Type B: ±1.0ºC or 0.25%
(whichever is greater)
BAC2 BAC5621 ±1.1ºC <538ºC or
0.4% of reading >538ºC



Vacuum Thermocouple Enquiry Form

1. Thermocouple Type
2. Sheath Material
3. Types of Sensing Junction

Illustration Select
INSULATED Junction
EXPOSED Junction
Duplex Element Required? (please tick box)
4. Sheath Diameter
5. Sheath Length (L)
 mm
6. Support Tube Length (L1)
 mm
7. Optional Test Sensor Hole

Illustration Select
Hole supplied for test sensors up to 2mm diameter
(check box if required)
8. Optional Sheath Fitting

Illustration Select
Vacuum Feedthrough with Viton Sealant
1/4" BSPT
1/2" BSPT
3/4" BSPT
Welded Fixed Position Screwed Bush
3/4" BSPP
3/4" BSPT
1" BSPP
1" BSPT
Welded Vacuum Flange
Welded KF vacuum flange
Welded CF (ConFlat) vacuum flange
9. Tagging Options

Illustration Select
Plastic ID Label
For use with all end seals up to 70ºC
Laser Etched Metal Tag
For use with all end seals above 250ºC
Laser Etching on Sensor
Laser etch of serial number. This can be instead of or in addition to either of the options above
10. Calibration Accuracies

Calibration Type Select
IEC1 - IEC 60584.1
Class 1
AMS1 - AMS2750
BAC2 - BAC5621
Your chosen calibration is:

IEC1- IEC 60584.1 Class 1
Accuracy:
Types K/N: ±1.5ºC (-40 to +375ºC) or 0.4% (375 to 1000ºC)
Types R/S: ±1.0ºC (0 to 1100ºC) or 1ºC + 0.3% of temperature above 1100ºC (1100 to 1600ºC)
Certification:
TC Ltd offer both UKAS and In-House (traceable to national standards) calibrations to all major international standards up to 1590°C. Our laboratory is fully accredited to ISO17025 and our reports are designed with the requested standard in mind. Our sales engineers are on hand to discuss any requirements so please do not hesitate to contact us for more details.
Your chosen calibration is:

AMS1 - AMS2750
Accuracy:
Types K/N: ±1.1ºC or 0.4%
Types R/S: ±1.0ºC or 0.25%
(whichever is greater)
Type B: ±1.0ºC or 0.50%
(whichever is greater)
Certification:
TC Ltd offer both UKAS and In-House (traceable to national standards) calibrations to all major international standards up to 1590°C. Our laboratory is fully accredited to ISO17025 and our reports are designed with the requested standard in mind. Our sales engineers are on hand to discuss any requirements so please do not hesitate to contact us for more details.
Your chosen calibration is:

AMS2 - AMS2750
 Accuracy:
±2.2ºC or 0.75% of reading
(whichever is greater)
Certification:
TC Ltd offer both UKAS and In-House (traceable to national standards) calibrations to all major international standards up to 1590°C. Our laboratory is fully accredited to ISO17025 and our reports are designed with the requested standard in mind. Our sales engineers are on hand to discuss any requirements so please do not hesitate to contact us for more details.
Your chosen calibration is:

BAC2 - BAC5621
 Accuracy:
±1.1ºC <538ºC or 0.4% of reading >538ºC
Certification:
TC Ltd offer both UKAS and In-House (traceable to national standards) calibrations to all major international standards up to 1590°C. Our laboratory is fully accredited to ISO17025 and our reports are designed with the requested standard in mind. Our sales engineers are on hand to discuss any requirements so please do not hesitate to contact us for more details.
11. Calibration Standard
12. Report Type

Details Select
Standard 3 Page Report
An in-house 3-page report for the start/end of batch from 0-1200ºC with all the information NADCAP auditors require (please refer to the Calibration Details page for a detailed explanation)
Custom Report
As the Standard Report but with your choice of range and interval
Your chosen Report Type is:

An in-house 3-page report for the start/end of batch from 0-1200ºC with all the information NADCAP auditors require (please refer to the Calibration Details page for a detailed explanation).
Your chosen Report Type is:

A Custom Report
Please enter the calibration range:
Please enter the calibration interval:
13. Quantity Required

Contact Details

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Email


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Additional Information

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1 Thermocouple Type Temperature Range (continuous) Temperature Range
(short term)
K Nickel Chromium vs
Nickel Aluminium		 0°C to +1100°C -180°C to +1350°C
N Nicrosil vs Nisil 0°C to +1200°C -270°C to +1300°C
R Platinum - 13% Rhodium vs
Platinum		 0°C to +1600°C -50°C to +1750°C
S Platinum - 10% Rhodium vs
Platinum		 0°C to +1550°C -50°C to +1700°C
B Platinum - 30% Rhodium vs
Platinum 6% Rhodium		 +100°C to +1600°C +100°C to +1820°C
Temperature ranges refer to the thermocouple type.
The temperature range of the sensor may deviate from the above,
please refer to the product description for more details
2 Sheath Material Operational Properties Max.
Temperature
IAP Impervious Aluminous Porcelain Ideally suited for use with base metal thermocouple conductor combinations. Has a very low temperature coefficient of expansion thus giving excellent resistance to thermal shock. Offers high strength and high resistance to flux and slag attack. Suited to kiln applications where low contamination requirements preclude the use of a metal sheath. NB. Requires support at high temperature if horizontal. 1400°C
IRA Impervious Recrystallised Alumina Ideally suited for use with precious metal thermocouples at high temperatures. Provides a fair resistance to thermal shock. High degree of inertness to chemicals. Ideal for reducing carbonaceous atmospheres and offers a high resistance to alkaline and other fluxes. 1600°C

INSULATED
Hot junction insulated from sheath. Gives floating output with typical insulation resistance in excess of 100 megohms

EXPOSED
Fastest response mainly for the measurement of air temperature in ducts. Restricted to a maximum operating temperature of 300ºC
3 Ceramic Sheath
Diameter 'd1'		 Support Tube
Diameter 'd2'		 Style
  3.0mm 6.0mm Exposed Junction (simplex)
  3.5mm 6.0mm Exposed Junction (duplex)
  4.0mm 6.0mm Exposed or Insulated Junction
  6.0mm 10.0mm Exposed or Insulated Junction
  8.0mm 12.0mm Exposed Junction
  10.0mm 15.9mm Exposed Junction
  12.0mm 15.9mm Exposed Junctions