RTD Temperature probes with mineral insulation, available with optional connectors.

Data Sheet

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All specifications are subject to change without notice. All sales subject to standard terms and conditions.

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©2023 Ashcroft Inc. S81_RTD_ds_RevC_04-05-23

SPECIFICATIONS

Sheath Stem Diameter: 1⁄8˝, 3⁄16˝, ¼˝, 3 mm, 4.5 mm, 6 mm, 8 mm

Stem Length:

Minimum: 50 mm/2 in

Maximum: 3 m/120 in

Sensor Type &

Measuring Range

RTDs Platinum 385 Curve

Pt 100, -200 to 600 °C

Pt 1000, -40 to 600 °C

Wiring Configuration:

RTDs (single or dual)

2-wire

3-wire

4-wire

Accuracy Class

RTDs (IEC 60751)

Class A

Class B

Class AA

KEY BENEFITS

• Flexible designs for critical applications

• Highly accurate and repeatable

DESCRIPTION

These probes may be supplied with either single or dual

elements. The probe can be suplied with extension lead wire,

process connection connectors. The lead wires can be PVC,

silicone, PTFE or fiberglass insulation.

TYPICAL USES

n For chemical and petrochemical plants, refineries, utilities,

pulp and paper, etc

.

n For a wide range of process: vapors, gases

and liquids

n Flexible configurations, heavy duty MgO

n Special designs for intrinsically safe and

non-incendive applications

n Available with remote heads and flex armor

S81 Thermocouple Options

Probe with

extension

lead wire

Connector

Compression Fitting

Protection Spring on lead wire

Round Pin

Inset

OPTIONAL APPROVALS

FM Intrinsically safe:

Class I, Division 1, Groups A, B, C, D

T4 for -55 °C ≤ Ta ≤ 80 °C

T5 for -55 °C ≤ Ta ≤ 55 °C

T6 for -55 °C ≤ Ta ≤ 40 °C

FM Nonincedive:

Class I, Division 2, Groups A, B, C, D

T4 for -55 °C ≤ Ta ≤ 80 °C

T5 for -55 °C ≤ Ta ≤ 55 °C

T6 for -55 °C ≤ Ta ≤ 40 °C

ATEX or IECEx:

ATEX or IECEx

II 1 G Ex ia IIC T6 Ga -50 °C to 60 °C

II 2 G Ex ib IIC T6 Gb -50 °C to 60 °C

II 2 G Ex e IIC T6 Gb -55 °C to 60 °C

S81 RTD Temperature Probes

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