SPECIFICATIONS

Ashcroft Series:

S70

Sheath Diameter:

¼˝, 3⁄8˝, ½˝, 6 mm, 8 mm

Stem Length:

Minimum: 200 mm/8 in

Maximum: 45 m/150 ft

Sensor Type &

Measuring Range

Thermocouples

Type J –40 to +750°C

Type K –200 to +1000°C

Type N –200 to +1000°C

Wiring Configuration:

Thermocouples

2 Wire

Accuracy Class

ANSI MC 96 1

Standard

Special

IEC 60584

Class 1

Class 2

Class 3

KEY BENEFITS

• Flexible designs to work in most applications.

• Available with head mounted transmitters.

DESCRIPTION

The Ashcroft S70 temperature sensor assemblies

provide accurate temperature measurements

for applications that are located in hazardous

environments. Each temperature sensor assembly

consists of a 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.

TYPICAL USES

n Wall temperature measurements for reactor

vessels in chemical and petrochemical

processes.

n Surface temperature measurements for steam

lines in power generation processes.

n Process tube wall measurement fixed furnace

heading. Special designs for intrinsically safe,

non-incendive and explosion proof application.

(1) Absolute temperature in °C

Thermocouples (IEC 60584-2)

Type J

Type K

Type N

Class 1

±1.5°C or

±0.0040*|t|(1)

±1.5°C or

±0.0040*|t|(1)

±1.5°C or

±0.0040*|t|(1)

Class 2

±2.5°C or

±0.0075*|t|(1)

±2.5°C or

±0.0075*|t|(1)

±2.5°C or

±0.0040*|t|(1)

Class 3

N/A

±2.5°C or

±0.0040*|t|(1)

±2.5°C or

±0.0150*|t|(1)

Thermocouples (ANSI MC 96.1)

Type J

Type K

Type N

Standard

±2.2°C or

±0.0075*|t|(1)

±2.2°C or

±0.0075*|t|(1)

±2.2°C or

±0.0040*|t|(1)

Special

±1.1°C or

±0.0040*|t|(1)

±1.1°C or

±0.0040*|t|(1)

±1.1°C or

±0.0040*|t|(1)

Data Sheet

S70 Tube Skin Thermocouples

of 5

1

All specifications are subject to change without notice.

All sales subject to standard terms and conditions.

©2022 Ashcroft Inc. S70_Thermo_ds_RevA_03-22-22

ashcroft.com

info@ashcroft.com

1.800.328.8258