AT20 Thermocouple

Brand: Ashcroft Inc
Does not ship to Virginia, United States

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

Specifications

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

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