Overview

This document from JEMAR TERMOMETRÍA, S.L. serves as a detailed technical guide and product catalog for industrial temperature measurement solutions, covering custom manufacturing, technical support, and a broad range of accessories and components for temperature sensors.

1. Product Families and Specifications

• Connection Heads: Available in ADC12 aluminium, Bakelite, and stainless steel (AISI 304/316) with various cable/probe entry sizes and thread types. IP65 protection is model-dependent and must be confirmed. ATEX certification is not guaranteed by DIIBT6/DIIBT4 markings alone.
• Terminal Blocks: Multiple series (D, S, N, C, M) with ceramic (standard talc/olefin or 95% alumina on request) or Bakelite materials. Various diameters and terminal arrangements fit different connection heads.
• Mineral Insulated (MI) Cables and Probes: Constructed with solid conductors (thermocouple alloys, copper, nickel), MgO insulation for high-temperature electrical isolation, and seamless metal sheaths (stainless steels and Inconel). Custom configurations consider sensor type, sheath, process connection, and accessories. Sheath diameters range from 0.5 mm to 12 mm; simplex and duplex options; class I and II accuracy available.
• Thermocouple Cables and Colour Codes: Extension and compensating cables follow multiple international standards (ANSI, DIN, BS, NFC, JIS, IEC). Insulation/sheath materials include glass fibre, PTFE, PVC, silicone, quartz fibre, and stainless steel braids with max operating temperatures from 105 °C to 400 °C. Colour codes and conductor dimensions require validation before ordering.
• RTD Cables: Copper or nickel conductors with multiple conductor counts, sheath materials, and diameters specified. Coding references IEC751 standards.
• Additional Components: Technical ceramics, insulators, tubes, bayonets, fittings, thermowells, flanges, connectors, wires, and accessories are part of the product offering.

2. Cable Specifications and Thermal Performance

• Kapton insulated cables rated up to 400 °C.
• RTD cables with copper or nickel conductors rated up to 200 °C.
• Heating cables with CuNi conductors and PVC insulation rated approximately 80 °C.
• Thermal performance data for some cable types is pending validation.
• Colour coding discrepancies between ANSI and AISI standards require confirmation before use.

3. Technical Ceramics

• Alumina tubes categorized by Al₂O₃ content (85%, 95%, 99.5%) with max operating temperatures from 1350 °C to 1600 °C.
• Key properties include water absorption, Mohs hardness, resistivity, density, and flexural strength.
• Tubes available with one closed end or both ends open; diameters and lengths specified.
• Additional ceramic components include multi-bore insulators and insulating beads made from talc and olefin, rated up to 1350 °C.

4. Thermocouple Protection Tubes

• RSiC (Recrystallised Silicon Carbide): High purity (≥99% SiC), max temperature 1650 °C, density 2.65-2.75 g/cm³, with detailed mechanical properties. Standard diameters 15-50 mm.
• NSiC (Nitride-bonded Silicon Carbide): Lower SiC content (≥68%), max temperature 1500 °C, higher density (2.75-2.85 g/cm³), superior rupture strength and fracture toughness. Similar dimensions to RSiC. Performance validation pending.

5. Mechanical and Corrosion Protection

• Stainless steel tubes (AISI 304/316) with optional PTFE coating (up to 1.0 mm thickness) for protection under various conditions.
• Temperature range -180 to 250 °C; max pressure 4.0 MPa.
• Thermal response approximately 20% slower than uncoated tubes.
• Coating of flanges and metal parts available; compatibility checks recommended.

6. Mounting Connections and Fittings

• Bayonets, tips, adaptors, and spring assemblies made from nickel-plated brass, steel, and stainless steel.
• Compression fittings in AISI 316, 304, brass, and nickel-plated brass with silver-plated nuts and double stainless steel ferrules.
• Dimensional tables for NPT, BSPP threads, metric fittings, nipples, and plugs specify thread sizes, diameters, lengths, and hex dimensions.

7. Thermowells and Flanges

• Thermowells offered in threaded and weld-in types with tapered, straight, and reduced-tip geometries.
• Standard lengths and bore diameters specified; internal connections include ½ and ¾ NPT or G threads.
• Instrumentation flanges in stainless steel grades (AISI 304, 316, 310S) comply with ASME B16.5, DIN, JIS standards.
• Pressure ratings from 0.6 to 32 MPa; flange types include raised face, male face, female face, weld neck, slip-on, blind, and threaded.

8. Thermocouple Connectors

• Polarized connectors with thermocouple alloy contacts in thermoplastic or ceramic bodies.
• Solid or hollow contacts; male, female, or paired assemblies for types K, J, E, N, and T.
• Max ambient temperature for thermoplastic bodies is 200 °C.
• ANSI color coding default; alloy, polarity, and color code validation recommended before ordering.

9. Thermocouple Wires and Alloys

• Wire compositions, temperature limits, and tolerance classes summarized for types K, J, E, N, T, R, S, B.
• Max operating temperatures vary by alloy and wire diameter; short-term and long-term ratings provided.
• Tolerance classes I and II defined with corresponding temperature ranges and accuracy.
• Pricing for precious metal alloys (R, S, B) depends on metal market quotations.

10. Portable Probes

• Assemblies for K and J thermocouples include coiled cables with miniature connectors, PTFE or polypropylene insulation, and polyurethane sheaths.
• Standard cable lengths of 1.5 m and 2.0 m.
• Handles available in black or yellow with adaptors for 6 or 8 mm probe diameters, including protective springs and securing screws.

11. RTD Sensing Elements (Cu50 / PT100 / PT1000)

• Ceramic and thin-film RTD elements in various sizes and lead configurations.
• Temperature ranges from -100 °C to 600 °C depending on element type.
• Classes A and B referenced per IEC751; standards validation pending.
• Silver leads standard for ceramic PT100; special lengths available on request.
• Thin-film elements have variable temperature ranges requiring confirmation.

12. Fast Thermocouples

Components for fast measurement assemblies are mentioned but lack sufficient reference or performance data for definitive selection. Availability and configuration are on request.

13. Custom Configuration and Quotation Process

• Customers should provide detailed specifications including product family, quantity, materials, dimensions, thread and process connections, process conditions (temperature, pressure, medium), sensor type, cable, connection head, and calibration requirements.
• Technical support is available for thermocouples, RTDs, custom manufacturing, and calibration management.
• ATEX compliance depends on specific product configurations and must be confirmed separately.

Good Practices and Limitations

• Always validate manufacturer data, standards references, and color codes before final configuration or ordering.
• ATEX certification is not implied by certain designations and requires separate confirmation.
• Thermal performance data for some cable constructions are pending validation.
• JEMAR supports custom configurations considering the entire assembly for compatibility and performance.

Summary

This document provides a comprehensive technical reference and selection guide for industrial temperature measurement components, emphasizing precision, safety, and performance. It offers a wide range of customizable solutions suitable for diverse industrial applications. Users are advised to confirm all technical specifications, certifications, and standards compliance prior to implementation.