Installation Prothermo NMT81
14 Endress+Hauser
5.2.1 Option 1: Measurement functions
Because the software in the converter is equipped with a function that converts elements with
different characteristics, it is possible to use other brand's temperature probes.
The NMT81 converter only version supports the following element types:
Elements Standard Temperature coefficient
Pt100 IEC60751 α=0.00385
Pt100 GOST α=0.00391
Cu100 GOST α=0.00428
Ni100 GOST α=0.00617
• If elements other than the items above are required, contact your Endress+Hauser
Sales Center.
• NMT81 is four-wire only with MSTs (Multi-spot thermometers), but it is not
compatible with a thermocouple temperature device.
• The physical connection between a probe and NMT81 is completed by a zinc-plated
carbon steel G 3/4" (NPT 3/4") universal threaded coupling. If a different thread size is
required, Endress+Hauser can provide a solution by adapting a variety of coupling sizes
and materials based on existing temperature probe specifications. Contact your
Endress+Hauser Sales Center.
• Power supply and data transmission lines are both provided from the host gauge of
NMS5, NMS8x, NMR8x, NRF81 or NRF590 through a two-wire local HART loop
connection. NMT81 can be configured and operated using FieldCare, which has a user-
friendly interface.
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