Temperature Sensors (Prothermo NMT539)

Endress+Hauser AG

Temperature Sensors (Prothermo NMT539) by Endress+Hauser AG

High precision average temperature measurement
Prothermo NMT539 is an intelligent HART signal converter, with a combined average temperature sensor and water bottom interface probe. For average temperature measurement consists of precision multispot Pt100 elements. The NMT539 is a highly capable solution for constant average temperature data and water interface data via HART communication. For custody transfer and accurate inventory measurement, it is best suited connected to Proservo NMS5 or Tank Side Monitor NRF590 with Micropilot.

  • Intrinsically safe device allowing for the safest electrical configuration possible
  • Available in four different versions based on customer requirements:
    Converter only
    Converter and temperature probe
    Converter and water bottom probe
    Converter, temperature and water bottom probe
  • Converter is compatible with various element types in third party manufacturer temperature probes
  • Compatible with Endress+Hauser's user friendly FieldCare
  • Variety of process connections and cable entries available to meet worldwide classifications
  • High reliability and easy installation
  • Maintenance free
Field of application
For precision average temperature and water bottom measurement.
  • Process connection: Flanges
  • Temperature: -40 to +100°C (-40 to +212°F)
  • Measuring distance: 40m (131.2ft)
  • Accuracy: ± 0.1°C
  • International explosion protection certificates
Kägenstrasse 7
Business Type
Export Regions
DIN EN ISO 9001:2000
Jean-Gyl Capt

About Endress+Hauser AG

Endress+Hauser is a global leader in measurement instrumentation, services and solutions for industrial process engineering. We provide process solutions for flow, level, pressure, analytics, temperature, recording and digital communications, optimizing processes in terms of economic efficiency, safety and environmental impact. Our customers come from a wide variety of industries, including chemical, petrochemical, food & beverage, oil & gas, water & wastewater, power & energy and life sciences.


  • Net sales of 2.0 billion euros – a strong partner
  • More than 12,000 employees worldwide – a reliable employer
  • Equity ratio of 68% – solidly financed
  • Continuous annual investments of 126 million euros – future-oriented
  • 6,600 patents and patent applications – innovative and creative