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Averaging MRT - Multi Resistance Thermometers

Averaging MRT - Multi Resistance Thermometers

Averaging MRT - Multi Resistance Thermometers

Product catalog summary
Overview: The document describes Multiple Resistance Thermometers (MRTs) designed for high accuracy temperature measurement across various applications, particularly in harsh and corrosive environments. These thermometers are essential for custody transfer applications and are compatible with industry-standard level gauges.
Specifications:
  • Element resistance: 100 ohm at 25°C or 0°C.
  • Sheath materials: Stainless steel or nylon.
  • Temperature range: -20 to +90°C for standard construction, -50 to +200°C for high-temperature applications.
  • Maximum pressure: 6 bar.
  • Tank height compatibility: 2m to 40m.
Design Features:
  • Stable element design prevents sagging and maintains average weighting.
  • True-averaging copper or platinised-copper elements.
  • True 3-wire compensation for equal lead lengths.
  • Calibrated at three temperatures for extended accuracy.
  • Maximum of 12 averaging elements, with optional bottom spot element.
Approvals and Standards:
  • Certified to conform to the ATEX directive and CENELEC EN50014, 50020 standards.
  • Type of protection: Eexia IIC T3 (Tamb=+160°C), certificate number BAS No. EX97D2042X.
Additional Information: The document also references other products in the range, such as Latis DS2202 and Multi-Spot Thermometers DS2102. The company reserves the right to amend products or documentation without notice.
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Catalog excerpts

Averaging MRT - Multi Resistance Thermometers-1

/ \ Multiple Resistance Thermometers (MRTs) of high accuracy for true averaging temperature measurement in a wide range of applications. • Stable element design that can not sag and alter average weighting • Suitable for use in harsh and corrosive environments • True-averaging copper or platinised-copper elements • Compatible with industry-standard level gauges • Element resistance is 100 ohm at 25°C or 0°C • Essential for custody transfer applications • Stainless steel or nylon sheath Nulectrohms are the market leader in multi-element thermometers used in a wide range of applications including storage of hydrocarbons. The high accuracy of the elements make the Nulectrohms MRT an integral part of tank gauging systems used for custody transfer and inventory control applications. / \ The sheath, made of stainless steel or nylon, contains a number of elements of different lengths all starting from the bottom of the sheath. The construction of the sheath and elements is such that the elements retain their dimensional properties under vibration and environmental changes which are frequently encountered in many installations. True 3-wire compensation is possible as the element design is such that the start and finish of each element is at the bottom of the assembly, making all lead lengths equal. All elements are calibrated at 3 temperatures: high, low and mid point 'ballast' for extended accuracy. The maximum number of averaging elements is 12, plus where required a bottom spot element can be added. \_/ MADE IN SHEFFIELD DS2101 Page 1 of 2

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Averaging MRT - Multi Resistance Thermometers-2

Platinised version Pt100 Class B ohm 100Q@0°C Sheath Type Thick-wall Nylon 12 Standard Nylon (Rilsan) tube Standard Stainless Wire insulation Temperature range Thin-wall AISI 316 Convolute tube Extended Temperature stainless High-temperature Stainless PTFE internal PVC external PTFE with high temperature elements Other Maximum pressure Termination Fittings Tank height Cabling Element 6 bar Top fitting with a 12" (305mm) long stainless steel pipe with 10" (254mm) length, ^" BSP thread, or to customer specification 1 locking ring and nut as standard Other fittings and flanges can be...

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