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AT20 Thermocouple

Brand: Ashcroft Inc
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The Ashcroft AT20 temperature sensor assemblies provide accurate temperature measurements for applications that are located in hazardous environments.

Each temperature sensor assembly consists of a spring loaded temperature sensor, magnesium oxide, MgO, insulated insert, connection head and lag extension.

The assembly may also include an optional terminal block for wiring and/or transmitters.

Thermocouple assemblies are manufactured to either to IEC 60584-2 or ANSI MC 96.1 and RTDs assemblies are manufactured to IEC 60751.
Features
  • Designed to be used with ISA-ds 49 style thermowells
  • Manufactured to 60584-2 or ANSI MC 96.1
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The Ashcroft AT20 temperature sensor assemblies provide accurate temperature measurements for applications that are located in hazardous environments.

Each temperature sensor assembly consists of a spring loaded temperature sensor, magnesium oxide, MgO, insulated insert, connection head and lag extension.

The assembly may also include an optional terminal block for wiring and/or transmitters.

Thermocouple assemblies are manufactured to either to IEC 60584-2 or ANSI MC 96.1 and RTDs assemblies are manufactured to IEC 60751.
Features
  • Designed to be used with ISA-ds 49 style thermowells
  • Manufactured to 60584-2 or ANSI MC 96.1
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Specifications

Brand

Accuracy

  • Class 1, Typical J, K, T, E & N: ± 1.5° C (± 2.7° F) or ± 0.0040° C (± 0.0072° F)
  • Class 2 Typical J, K, E, N, Class 3 Typical K, E, N: ± 2.5° C (± 4.5° F) or Absolute ± 0.0040° C (0.0072° F), ± 0.0075° C (± 0.0135° F), 0.0150° C (± 0.027° F)
  • Standard Typical E: ± 1.7° C (± 3° F) or Absolute ± 0.0050° C (± 0.009° F)
  • Standard Typical J, K, N: ± 2.2° C (± 3.96° F) or Absolute 0.0075° C (0.0135° F), ± 0.0040° C (± 0.0072° F)
  • Standrad & Class 2 & Class 3 Typical T: ± 1° C (1.8° F) or Absolute ± 0.0075° C (± 0.0135° F), ± 0.0150° C (0.027° F)

Approvals & Certifications

  • Calibration
  • ATEX: Ex ia IIC T6 Gb (IEC 60079-1), Ex ia IIC T6 Ga (EC 60079-11)
  • IECEx: Ex ia IIC T6 Ga (IEC 60079-1), (IEC 60079-11), 60584-2

Diameter

  • Stem: 1/8 to 5/16” (3 to 8 mm)

Electrical Connectors

  • Ceramic Terminal Block

Environmental Protection

  • IP66
  • IP67
  • IP68

Gland Material

  • Cable Gland: Nickel Plating Brass for Unarmored & Armored Cable
  • Cable Gland: Polyamide PA, for Unarmored Cable
  • Cable: Stainless Steel for Unarmored & Armored Cable

Lagging Extension

  • 2 to 39” (0.05 to 1 Meter)

Materials of Construction

  • Head: Aluminum Alloy
  • Nipple (AISI), Head: 316 Stainless Steel

Mounting

  • Head: 1/2” NPT Female
  • Head: 3/4” NPT Female
  • Head: M20 x 1.5
  • Head: Pg 16

Name Plate, Tag Material

  • Metal

NPT Connection

  • 1/2” NPT Male

Process Connection Material

  • AISI 316 Stainless Steel

Sensor, Probe Connection

  • Thermocouple: 2-Wire

Sensor, Probe Type

  • E Thermocouple -200° to 800° C (-328° to 1,472° F)
  • J Thermocouple -40° to 750° C (-40° to 1,382° F)
  • K Thermocouple -200° to 1,100° C (-328° to 2,012° F)
  • N Thermocouple -200° to 1,100° C (-328° to 2,012° F)

Stem Length

  • 2 to 3,937” (0.05 to 100 metres)

Stem Material

  • AISI 316 Stainless Steel
  • Inconel 600
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Applications

  • Chemical & Petrochemical
  • HVAC/R
  • Industrial Equipment Manufacture
  • Industrial Ovens
  • Oil & Gas Applications
  • Petrochemical
  • Power Generation Equipment
  • Reactors
  • Towers
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