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Resistance Temperature Detectors
Resistance Temperature Detectors
Durex Industries offers high-accuracy Resistance Temperature Detectors (RTDs) for industrial and commercial applications. These RTDs are designed to withstand harsh environments, with elements made from Platinum, Nickel, or Nickel Iron, and support 2, 3, or 4-wire configurations. They are suitable for high-pressure applications up to 5000 psi and temperatures up to 1500°F (816°C), commonly used in industries such as food service, semiconducting, packaging, and automotive.
The RTDs feature high-purity platinum thin-film elements with precise resistance values, ensuring quick response times, stability, and resistance to vibration and temperature shocks. The response time can be as low as 1.2 seconds, and self-heating is minimized by maintaining a low testing current. Sensors are categorized into tolerance classes with calibration services traceable to NIST.
RTD assemblies come in various styles with maximum temperature ratings of 500°F, 900°F, and 1200°F, depending on the materials used.
The relationship between electrical resistivity and temperature is defined by the temperature characteristic curve, adhering to the DIN EN 60751 standard.
RTD elements are available in types such as 100 ohm Platinum with different temperature coefficients and tolerances.
Wiring configurations include 2-wire, 3-wire, and 4-wire Wheatstone Bridge setups, each with specific error characteristics.
Dimensions and configurations are specified using codes that define element type, wiring configuration, sheath material, diameter, length, leadwire type, terminations, and fitting options.
RTDs with leadwire are available in different styles with specific maximum temperature ratings and configurations. High-temperature RTDs are designed for applications up to 1200°F, with various element types and leadwire options.
RTDs with fixed fittings are available with different wiring configurations, sheath materials, diameters, and fitting options, suitable for temperatures up to 1200°F.
RTDs are suitable for use in generators, engines, compressors, pharmaceutical industries, utilities, chemical plants, gas pipelines, food preparation, refineries, petrochemical plants, and paper mills.
Customers can specify temperature ranges, probe dimensions, extension cable lengths, and process connection types to suit specific applications.
Features include robust construction, moisture resistance, and the ability to withstand vibrations and temperature changes.
Calibration procedures are detailed, with testing traceable to the National Institute of Standards and Technology (NIST). Calibration ranges from -100°F to 3000°F, depending on the material. Physical and electrical testing includes dimensional checks, helium leak tests, and insulation resistance measurements.
The document adheres to ANSI and ASTM standards, including ASTM E585, E608, E780, and E839 for thermocouple materials and assemblies.
Recommendations for specific applications include using Teflon-coated probes for corrosive environments and bendable RTDs for installations with space constraints. Self-adhesive RTDs are suggested for surfaces that cannot be penetrated.
Specialty sensors include air temperature RTDs with perforated tips for rapid airflow monitoring, and flexible RTDs for surface mounting. Handheld RTDs are available for foodservice and industrial applications, with options for various handle materials and connector types.
Various thermocouple types are available, including Type E, J, K, T, N, R, S, and B, each with specific calibration limits and temperature ranges. Calibration descriptions include standard and special limits of error.
Different junction types are specified, such as exposed, grounded, ungrounded, neckdown, and pad, each suited for specific applications and response requirements.
Sheath materials include various stainless steels and Incoloy® 600, with diameters specified for different applications. The document provides a detailed code system for specifying dimensions and materials.
Includes various styles such as TDC4, TDC5, TDC6, TDC9, TDW1, TDW2, TDW3, and TDW4, each with specific features and applications.
Sheath materials include various stainless steels, Inconel® 600, and Alloy 601. Well materials include 304 and 316 stainless steel, brass, and carbon steel.
Sheath diameters range from .020” to .500” with specific codes for each size. Junction types include grounded, ungrounded, exposed, and dual junction options. Terminal connectors include standard plugs, mini plugs, and special specifications.
Spring-loaded options are available for certain thermocouple styles to ensure secure fitting. Leadwire construction options include insulation and conductor types such as fiberglass, Teflon, Kapton, and PVC. Potting requirements specify maximum temperature tolerances for potting materials.
Durex Industries, located at 190 Detroit Street, Cary, Illinois, provides contact details for further inquiries.
Different types of thermocouple extension wires are listed, categorized by type and ANSI color codes. Each type is described with its insulation material, temperature rating, gauge, part number, and whether it is solid or stranded.
Various connection types are detailed, including plug, jack, and panel jack configurations. Part numbers are provided for each type, noting standard and high-temperature ratings.
Accessories such as cable clamps, stainless steel armor cables, terminal blocks, terminal heads, compression fittings, blank bolts, bayonet adapters, and terminal barrier strips are described with part numbers, dimensions, and specific features.
Features of transmitters like the 5331D, 5333D, and 5334B are outlined, highlighting their high measurement accuracy, galvanic isolation, and programmable sensor error values. Typical applications include temperature measurement and signal conversion. Technical characteristics and installation instructions are also provided.
Detailed electrical specifications for the 5331D transmitter are included, covering aspects like supply voltage, isolation voltage, signal dynamics, accuracy, and EMC immunity. Temperature ranges and spans for various thermocouple types are listed.
Specifications for various temperature sensor types, including their range, minimum span, and standards, are provided.
Specifications for RTD and linear resistance input types, including range, minimum span, and standards, are detailed.
Electrical specifications such as supply voltage, internal consumption, voltage drop, signal/noise ratio, response time, and accuracy are provided.
Output specifications include current output, minimum signal range, load resistance, and sensor error detection.
Approvals and standards include ATEX, FM, CSA, Marine Approval, GOST R Approval, and EMC standards.
Physical and environmental specifications include dimensions, protection degree, humidity, and vibration standards.
Catalog excerpts
closing the loop on thermal solutions Resistance Temperature Detectors INTRODUCTION For high-accuracy temperature measurements in a variety of industrial and commercial air and gas applications, Durex Industries offers RTD's of multiple elements and styles. Durex RTD's are available with an assortment of connections, mounting hardware, and enclosures to suit harsh chemical, immersion, and other heavy-duty requirements. Sealed leadwire transitions eliminate contamination. Multiple sensing elements can be located at various points for precise temperature control. Typical Applications: • Food Service • Semiconducting • Packaging • Hot Melt Dispensing • Vacuum Sealing and Forming • Automotive • Medical / Laboratory Settings Design Features: • Platinum, Nickel, or Nickel Iron elements • 2, 3, or 4-wire styles • High pressure applications up to 5000 psi • Optional sanitary-grade stainless steel hardware • Temperatures up to 1500°F (816°C) • Optional braiding or armor cable shielding 190 Detroit Street, Cary, Illinois 60013 • Phone: 847-639-5600 • Fax: 847-639-2199 • Web: www.durexindustries.com • TOLL FREE: 800-762-3468 Rev 1/28/15
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Resistance Temperature Detectors SPECIFICATIONS Unless otherwise specified, Durex’s RTD assemblies include photo-lithographically structured, high-purity platinum thin-film elements laser trimmed to precise resistance values. These sensors feature brief response times, excellent long term stability, low self heating and excellent resistance to vibration and temperature shocks. Thermal Response Time The response time T0.63 is the time the sensors need to respond to 63% of the change in temperature. The response time depends on the sheath dimensions, but can be as low as 1.2 seconds. Long Term...
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closing the loop on thermal solutions Resistance Temperature Detectors SPECIFICATIONS Temperature Characteristic Curve The temperature characteristic curve determines the dependence of the electrical resistivity on the temperature. The following definition of the temperature curve according to DIN EN 60751 standard applies: -200 to 0°C R(t) = R0[1+(A*t)+(B*t2)+C(t-100)t3] Platinum (3850 ppm/K): A = 3.9083 * 10-3 [°C-1] B = -5.775 * 10-7 [°C-2] C = -4.183 * 10-12 [°C-4] Platinum (3750 ppm/K): A = 3.9083 * 10-3 [°C-1] B = -6.01888 * 10-7 [°C-2] C = -6 * 10-12 [°C-4] R0 = Resistance value in...
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closing the loop on thermal solutions Resistance Temperature Detectors SPECIFICATIONSAvailable RTD Elements Code 3 Wire, Wheatstone Bridge Internal Wiring Diagram A B C A B One lead resistance is included in each of the two arms of the bridge. The errors reduce to Rlj - Rl2 4 Wire, Compensated Wheatstone Bridge In this type RL3 and RL4 appear in one arm ol the bridge. RLI and RL2 appear in the other. Errors are RLI+RL2-RL3-RL4 4 Wire, Connected High Impedance D-3 Voltage Measurement Errors can be made negligible by having a very high input impedance amplifier. Code Definitions "L" Dimensions...
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closing the loop on thermal solutions Resistance Temperature Detectors "L" Dimension "A” Dimension Table 5: Sheath Length ("L" Dimension) Specify in inches. See table on page 4 for codes. Specify in inches. See table on page 4 for codes. Sensors Part Number Sequence R1L-AB-4F100-100FCR R1L or R1M Table 1 Table 2 Table 3 Table 4 Table 5 Table 6 Table 7 Table 8 Table 9 Sensor Type Element Wiring Sheath Sheath "L" Sheath "A" Lead Leadwire Terminations Fitting& Style No. Type Configuration Material Diameter Length Length Type Options 190 Detroit Street, Cary, Illinois 60013 • Phone:...
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closing the loop on thermal solutions Resistance Temperature Detectors HIGH TEMPERATURE RTD WITH LEADWIRE Code Table 5: Sheath Length ("L" Dimension) Specify in inches. See table on page 4 for codes. Table 6: Lead Length ("A" Dimension) Specify in inches. See table on page 4 for codes. Sensors Part Number Sequence R1P-AA-4B09H-072ECR R1P - A A - 4 B 09H - 072 E C R R1P Table 1 Table 2 Table 3 Table 4 Table 5 Table 6 Table 7 Table 8 Table 9 Sensor Type Element Wiring Sheath Sheath "L" Sheath “A' Lead Leadwire Terminations Fitting& Style No. Type Configuration Material...
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closing the loop on thermal solutions Resistance Temperature Detectors RTD WITH FIXED FITTING "L" Dimension — Specify in inches. — (Enter 10H for 10 V") j~ Diameter_ "A” Dimension Specify in inches. (Enter 100 for 100") Code Table 5: Sheath Length ("L" Dimension) Specify in inches. See table on page 4 for codes. Code Table 6: Lead Length ("A" Dimension) Specify in inches. See table on page 4 for codes. Part Number Sequence R2P-EB-4V12F-018E1CC Table 3 Table 4 Table 5 Table 6 Table 7 Table 8 Sensors Sensor Type & Style No. Element Wiring Sheath Type Configuration Material Sheath Diameter 'L" Sheath...
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closing the loop on thermal solutions Resistance Temperature Detectors Diameter - Specify in inches -(Enter 100 for 100") STYLE R3L, R3M or R3P R3L - Maximum Temperature 500°F R3M - Maximum Temperature 900°F R3P - Maximum Temperature 1200°F Crimp Adapter Standard Table 5: Sheath Length ("L" Dimension) Part Number Sequence R3L-BB-6F100-5 R3L - B B - 6 F 100 -5 Sensor Type & Style No. Element Type Wiring Sheath Configuration Material Sheath "L" Sheath Terminations Diameter Length 190 Detroit Street, Cary, Illinois 60013 • Phone: 847-639-5600 • Fax: 847-639-2199...
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closing the loop on thermal solutions Resistance Temperature Detectors RTD WITH TERMINAL HEAD Code Table 5: Sheath Length ("L" Dimension) Specify in inches. See table on page 4 for codes. Sensors Part Number Sequence R4L-EA-4C060-62ARR4L - E A - 4 C 060 - 6 2 A RR4L, R4M, R4P Table 1 Table 2 Table 3 Table 4 Table 5 Table 6 Table 7 Table 8 Table 9 Sensor Type Element Wiring Sheath Sheath "L" Sheath Process Spring Terminal Fitting & Style No. Type Configuration Material Diameter Length Connections Loading Head Options 190 Detroit...
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