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Ashcroft RTDs Thermocouples

Description

Ashcroft RTDs Thermocouple assemblies monitor temperature in industrial, process and hazardous installations.  Available with Pt 100 and Pt 1000 RTDs, they are designed for use with either DIN 43772/T.2 or ISA-ds 49 style thermowells along with DIN and ASME type lag extensions. A wide selection of aluminum and 316 stainless steel connection heads make these devices configurable to the requirements of nearly any installation.

Not every application is the same, so you need to get the right equipment for your specific needs. When it comes to temperature measurement, inaccurate readings can severely impact your process.

So, how can you ensure you are correctly and reliably monitoring temperature? Ashcroft has just released a new line of custom RTDs and thermocouples. Whether your application is for light-industrial temperature measurements or critical heavy-duty installations, our wide range of reliable RTD and thermocouple probes are custom-configured to meet your specific application requirements.

This article will detail several of the new probes, their features and specifications and for which applications they work best.

Important Features from

With a broad selection of connections, stems, lags and thermowells, Ashcroft Types S50, S80 & S81 RTD and thermocouple probes can be custom configured to meet the specifications of nearly any EPC or large project requirement.

Intrinsically safe and explosion-proof versions for use in hazardous locations include FM approval. A terminal block and a variety of heads accommodate a choice of direct wiring or the addition of a 4-20 mA output transmitter.

Ashcroft RTDs Thermocouples Products

Ashcroft S01 RTD & Thermocouple Inserts

S01 RTD Mineral Insulated Probe Insert Assemblies used in industrial applications for probe replacements. The sensors incorporated in these inserts are with a mineral insulation metal sheath. They can be of two types: resistance temperature detectors (RTDs) or thermocouples (TCs). In each case, the sensor supplies an electrical signal corresponding to the temperature.

Ashcroft S01 RTD Thermocouple
Ashcroft S01 RTD Thermocouple

Integral DIN style terminal block and transmitter designs. The travel of this spring mounting assures best thermal conductivity, compensation of length tolerances in thermowells and protection against vibration. When mounted in thermowells, inserts can be simply replaced, without removing the thermowell from the pipe and without any process interruption.

Key Features:

  • For mounting in thermowells
  • Manufactured to IEC 60751
  • Available with and without transmitters
  • Mineral Insulated Insert
  • Intrinsically Safe designs available

Applications:

  • Process Market:
    • Power Generation
    • Reactors
    • Storage Tanks
    • Cooling Towers
  • Industrial Markets:
    • Industrial equipment Manufacture
    • Industrial Ovens
    • HVAC/R
  • Medical Life Sciences:
    • Food and Beverage
    • Pharmaceutical and Biotech

Typical Uses

  • For industrial applications used for probe replacements
  • Special designs for intrisically safe and non-incendive application

Specification

  • Ashcroft Series: S01
  • Insert 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
      • Pt 100 –200 to +600°C
      • Pt 1000 –40 to +600°C
    • Thermocouples
      • Type J –40 to +750°C
      • Type E –200 to +800°C
      • Type K –200 to +1000°C
      • Type N –200 to +1000°C
  • Wiring Configuration:
    • RTDs single or dual
      • 2 Wire
      • 3 Wire
      • 4 Wire
    • Thermocouples : 2 Wire single or dual
  •  :Accuracy Class : RTD’s (IEC 60751)
    • Class A: ±(0.15 + 0.0020 |t|)
    • Class B: ±(0.30 + 0.0050 |t|)
    • Class AA: ±(0.10 + 0.0017 |t|)
  • Ceramic terminal block or transmitter :
    • Size DIN B
    • Diam. 42 mm
    • Screw spring : 33 mm
    • Screw thread : M4 x 1.5
    • SPECIFICATIONS Spring travel : 8 to 10 mm

HOW TO ORDER S01 TEMPERATURE PROBES:

  • The ordering code is built by selecting the appropriate configuration for the various sections of the ordering code.
  • The Insert nominal length Li is measured from base of the DIN mounting plate to the tip of the probe.
  • To convert inches to millimeters multiply by 25.4. mm = inches x 25.4

Ashcroft S10 RTD with Metric Connections

S10 RTD Mineral Insulated Probe Assemblies with or without Lag extensions designed with metric fittings and connections.  The Ashcroft S10 temperature sensor assemblies provide accurate temperature measurements for most applications. Each temperature sensor assembly consists of a spring loaded temperature sensor insert, a connection head and lag extension.

Ashcroft S01 RTD Thermocouple Metric Connections
Ashcroft S01 RTD Metric Connections

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 RTD assemblies are manufactured to IEC 60751.

TYPICAL USES

  • Process temperature measurements for industrial, process and power generation.
  • Exhaust gas temperature measurements for diesel engines.
  • Oven temperature measurements for industrial drying ovens.
  • Special designs for intrinsically safe and non-incendive application.

Key Features:

  • Designed for DIN 43772 thermowells
  • Manufactured to IEC 60751
  • Custom Lag Extensions
  • Available with and without transmitters
  • Mineral Insulated Inset
  • Intrinsically Safe and Non-Incendive designs available
  • Flexible designs to work in most applications

Applications:

  • Process Market:
    • Power Generation
    • Reactors
    • Storage Tanks
    • Cooling Towers
  • Industrial Markets:
    • Industrial equipment Manufacture
    • Industrial Ovens
    • HVAC/R
  • Medical Life Sciences:
    • Food and Beverage
    • Pharmaceutical and Biotech

Specification

  • Stem Diameter : 3 mm, 4.5 mm, 6 mm, 8 mm
  • Stem Length
    • Minimum: 50 mm/2 in
    • Maximum: 3 m/120 in
  • Accuracy Class
      • 1/2 Class B
      • 1/3 Class B
      • Class A
      • Class B
  • Sensor Type & Measuring Range
    • Pt 100 –200 to +600°C
    • Pt 1000 –40 to +600°C
  • Wiring Configuration
    • 2 wire single or dual
    • 3 wire
    • 4 wire
  • Head Configuration
    • DIN B, BBK, BUZ an

HOW TO ORDER S10 TEMPERATURE PROBES:

  • The ordering code is built by selecting the appropriate configuration for the various sections of the ordering code.
  • The Insert nominal length LN is measured from base of the head to the tip of the probe.
  • The lag extension length N is measured from the base of the head to the center of the threads on the lag extension.
  • LN can be calculated by adding the lag extension length N to the probe insertion length L.
  • The N length and the LN length are added to the end of the ordering code in millimeters.
  • To convert inches to millimeters multiply by 25.4. mm = inches x 25.4

Ashcroft S50 Industrial RTD with NPT Connections

S50 RTD Mineral Insulated Probe Assemblies with or without Lag extensions designed with NPT fittings and connections. Ashcroft S50 temperature sensor assemblies provide accurate temperature measurements.  Each temperature sensor assembly consists of a spring loaded temperature sensor, magnesium oxide, (MgO), insulated insert, connection head and lag extension.

Ashcroft S50 RTD with NPT Connections
Ashcroft S50 RTD with NPT Connections

The assembly may also include an optional terminal block and/or transmitters. Thermocouple assemblies are manufactured to IEC 60584-2 or ANSI MC 96.1 and RTDs assemblies are manufactured to IEC 60751.

Typical Uses

  • Industrial process, petrochemical, oil and gas applications
  • Process temperature measurements for oil, gas and power generation systems
  • Process control, monitoring asset protection
  • General purpose or hazardous area

Key Features

  • Designed for ISA-ds 49 style thermowells
  • Manufactured to IEC 60751
  • Custom Lag Extensions
  • Available with and without transmitters
  • Mineral Insulated Inset
  • Intrinsically Safe designs available
  • Explosion Proof designs available

Applications

  • Process Markets:
    • Oil and Gas
    • Power Generation
    • Chemical and Petrochemical Plants
    • Reactors
    • Storage tanks
    • Towers
  • Industrial Markets:
    • Industrial Equipment Manufacture
    • Industrial ovens
    • HVAC/R

Specification

  • Stem Diameter
    • 3 mm
    • 4.5 mm
    • 1/8″
    • 3/16″
    • 1/4″
    • 6 mm
    • 8 mm
  • Stem Length
    • Minimum: 50 mm/2 in
    • Maximum: 3 m/120 in
  • Sensor Type & Measuring Range
    • Pt 100 –200 to +600°C
    • Pt 1000 –40 to +600°C
  • Wiring Configuration
    • 2 wire single or dual
    • 3 wire
    • 4 wire
  • Accuracy Class
    • 1/2 Class B
    • 1/3 Class B
    • Class A
    • Class B
  • Head Configuration
    • DIN B, BUZ, Ex d, SCCI and SCCA

HOW TO ORDER S50 TEMPERATURE PROBES:

  • The ordering code is built by selecting the appropriate configuration for the various sections of the ordering code.
  • The Insert nominal length LN is measured from base of the  head to the tip of the probe.
  • The lag extension length N is measured from the base of the head to the center of the threads on the lag extension.
  • LN can be calculated by adding the Lag extension length N to the Probe insertion length L.
  • The N length and the LN length are added to the end of the product code in millimeters.
  • To convert inches to millimeters multiply by 25.4. mm = inches x 25.4

Ashcroft S70 Tube Skin Thermocouple

S70 skin thermocouple for monitoring process temperature without the use of a thermowell. Skin type sensors accurately and reliably measures the temperature of a surface that the process media is in contact with without ever coming in contact the media.

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

  • Wall temperature measurements for reactor vessels in chemical and petrochemical processes.
  • Surface temperature measurements for steam lines in power generation processes.
  • Process tube wall measurement fixed furnace heading. Special designs for intrinsically safe, non-incendive and explosion proof application.

Key Features

  • Weldable sensor head
  • Available with and without transmitters
  • Integrated expansion loop allows for expansion and contraction within temperature changes
  • Intrinsically Safe and Non-Incendive designs available
  • Explosion Proof designs available

Applications

  • Process Market:
    • Oil and Gas
    • Power Generation
    • Chemical and Petrochemical Plants
    • Reactors
    • Storage Tanks
    • Towers
  • Industrial Markets:
    • Industrial Equipment Manufacture
    • Industrial Ovens
    • HVAC/R

HOW TO ORDER S70 TEMPERATURE PROBES:

  • The ordering code is built by selecting the appropriate configuration for the various sections of the ordering code.
  • The Insert nominal length LN is measured from base of the head to the tip of the probe.
  • The lag extension length N is measured for the base of the head to the center of the threads on the lag extension.
  • The B dimension is from the center of the connection fitting to the end of the expansion loop.
  • The A dimension is from the end of the expansion loop to the tip of the probe.
  • LN = A + B + N + length of connection fitting The B length and the LN length are added to the end of the
    ordering code in millimeters.
  • To convert inches to millimeters multiply by 25.4. mm = inches x 25.4

Ashcroft S81 RTD Temperature Probe

S81 RTD temperature probe with mineral insulation, available with optional connectors. 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, Teflon® or fiberglass insulation.

Typical Uses

  • For chemical and petrochemical plants, refineries, utilities, pulp and paper, etc.
  • For a wide range of process: vapors, gases and liquids
  • Flexible configurations, heavy duty MgO
  • Special designs for intrinsically safe and non-incendive applications

Key Features

  • Flexible configurations with other without lead wires and connectors.
  • Heavy duty MgO cable
  • Intrinsically Safe and Non-Incendive designs available

Applications

  • Process Market
    • Oil and Gas
    • Power Generation
    • Chemical and Petrochemical Plants
    • Reactors
    • Storage Tanks
    • Towers
  • Industrial Markets
    • Industrial Equipment Manufacture
    • Industrial Ovens
    • HVAC/R

Specification

Stem Diameter

  • 3 mm
  • 4.5 mm
  • 1/8″
  • 3/16″
  • 1/4″
  • 6 mm
  • 8 mm

Stem Length

  • Minimum: 50 mm/2 in
  • Maximum: 3 m/120 in

Sensor Type & Measuring Range

  • Pt 100 –200 to +600°C
  • Pt 1000 –40 to +600°C

Wiring Configuration

  • 2 wire single or dual
  • 3 wire
  • 4 wire

Accuracy Class

  • Class AA
  • Class A
  • Class B

HOW TO ORDER S50 TEMPERATURE PROBES:

  • The ordering code is built by selecting the appropriate configuration for the various sections of the ordering code.
  • The insert nominal length L is measured from base of the lead wire transition piece to the tip of the probe.
  • The lead wire length LC is measured for the base of the lead wire transition piece to the end of the lead wire jacket.
  • The L length and the LC length are added to the end of the ordering code in millimeters.
  • To convert inches to millimeters multiply by 25.4. mm = inches x 25.4
  • Temperature Transmitters

DESCRIPTION

Ashcroft offers temperature transmitters from industry leading manufacturers that can be installed and programmed in the heads of S10, S50 and S70 temperature probes and on S01 temperature inserts. Head mount transmitters are for DIN form B mounting.

temperature transmitter
temperature transmitter

Remote head style transmitters with display are also available. Transmitters are available with FM or ATEX intrinsically safe approvals. When used in intrinsically safe (IS) applications the transmitter’s IS approval is used rather than the probe’s IS approval since the wiring from the hazardous area to the nonhazardous area is done from the transmitter.

Features

  • 1 or 2 Sensor inputs
  • 4 to 20 mA output
  • Models with HART Protocol
  • FM or ATEX Intrinsic Safety Approvals Available
  • Installed in S01, S10, S50 & S70 probes
  • Programming to customer requirements
  • Calibration Certificates Available

Source : blog.ashcroft.com

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Rudy Wiratama

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