

Specs at a glance
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Accuracy
+/- 0.1 °C
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Max. process pressure (static)
0 bar...0.5 bar
(0 psi...7.25 psi) -
Operating temperature range
Standard:
-40 °C...100 °C
Optional:
-55 °C...235 °C
Water Bottom spec.:
-40 °C...100 °C
Cyrogenic:
-170 °C...60 °C -
Max. immersion length on request
40 m (131.2 ft)
Field of application
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.
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
Benefits
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 probeConverter 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
Xpert selection
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Specialized products
- Designed for demanding applications
Technical excellence
Simplicity
Variable

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Standard products
- Reliable, robust and low-maintenance
Technical excellence
Simplicity
-
Specialized products
- Designed for demanding applications
Technical excellence
Simplicity
Variable
FLEX selections | Technical excellence | Simplicity |
---|---|---|
Fundamental selection Meet your basic measurement needs |
Technical excellence
|
Simplicity
|
Lean selection Handle your core processes easily |
Technical excellence
|
Simplicity
|
Extended selection Optimize your processes with innovative technologies |
Technical excellence
|
Simplicity
|
Xpert selection Master your most challenging applications |
Technical excellence
|
Simplicity
Variable |
Predecessor
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Technical Information (TI)
Prothermo NMT539 Technical Information
Combined HART converter, average temperature sensor and water
bottom interfaceEN Select other language 01/08/2005Language:
English
Version:
01/08/2005
File size:
945.4 KB
File name:
TI042NEN_NMT539.pdf
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Technical Information (TI)
Tankvision NXA820, NXA821, NXA822
Inventory Management System with completely integrated software for
operation via standard web browserEN Select other language 03/04/2008Language:
English
Version:
03/04/2008
File size:
2.7 MB
File name:
TI419FEN_05.08.pdf
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Technical Information (TI)
Prothermo NMT539 - Technical Information
Available in four different versions based on customer requirements:
Converter Only
Converter & Temp. probe
Converter & Water
bottom probe
Converter,
temp. & water bottom probe
Converter is compatible with
various element types in third party manufacturer temp. probe.EN Select other language 18/05/2011Language:
English
Version:
18/05/2011
File size:
2.4 MB
File name:
TI00042G08EN14.11.pdf
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-
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Technical Information (TI)
Prothermo NMT539 Technical Information
Tank gauging
EN Select other language 06/06/201926/04/201917/04/201810/08/201723/12/2015Language:
English
Version:
06/06/2019
File size:
2 MB
File name:
TI01005GEN_0919.pdf
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-
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Operating Instruction (BA)
Prothermo NMT539-Operating Instructions and Description of Instrument FunctiInstallation Instruction
The Prothermo NMT539 is an intelligent HART signal converter, with a
combined average temperature sensor and water bottom interface probe.
For average temperature measurement, it consists of precision multi-spot
Pt100 elements.EN Select other language 01/04/2008Language:
English
Version:
01/04/2008
File size:
1.2 MB
File name:
BA1026N08en04.08.pdf
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-
-
Operating Instruction (BA)
Prothermo NMT539 Operating Instructions
Tank gauging
EN Select other language 26/04/201917/04/201810/08/201723/12/201504/03/2015Language:
English
Version:
26/04/2019
File size:
1013.4 KB
File name:
BA01026GEN_2219.pdf
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Operating Instruction (BA)
Prothermo NMT 539 Operating Instructions and Description of Instrument Function
Average temperature and water bottom sensor
EN Select other language 01/10/2005Language:
English
Version:
01/10/2005
File size:
726.1 KB
File name:
BA026NEN.pdf
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-
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Operating Instruction (BA)
Prothermo NMT 539 Installation Instructions
Average temperature and water bottom sensor
EN Select other language 01/10/2005Language:
English
Version:
01/10/2005
File size:
1.6 MB
File name:
BA025NEN.pdf
-
-
-
Operating Instruction (BA)
Prothermo NMT539 Operating Instructions
Tank gauging
EN Select other language 26/04/201917/04/201810/08/201723/12/201504/03/2015Language:
English
Version:
26/04/2019
File size:
2.3 MB
File name:
BA01025GEN_2319.pdf
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-
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Operating Instruction (BA)
Prothermo NMT539 - Installation Instructions
The Prothermo NMT 539 is multi-spot Pt100 average thermometer
combined with a HART signal converter to meet the demand of temp.
measurement for both custody transfer and inventory control
applications.EN Select other language 01/03/2011Language:
English
Version:
01/03/2011
File size:
3.6 MB
File name:
BA1025N08en12.08.pdf
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Short Instruction (KA)
Prothermo NMT539 Gas -tight feed through- Installation Instructions
The Prothermo NMT 539 is multi-spot Pt100 average thermometer
combined with a HART signal converter to meet the demand of temp.
measurement for both custody transfer and inventory control
applications.EN Select other language 14/03/2011Language:
English
Version:
14/03/2011
File size:
725.9 KB
File name:
KA00297G08en01.11.pdf
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Ex Safety Instruction (XA)
NMT539-7...
Control drawing of the NMT539-7...
Language:
English
Version:
14/12/2017
File size:
121.1 KB
File name:
NMT539-7X_cFMus_en-fr.pdf
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-
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Ex Safety Instruction (XA)
Average Temperature Prothermo NMT539
NEPSI:
Ex ia IIB T6…T2 Ga/Gb
Ex ia IIB T6…T2 GbEN 15/02/202107/08/2014Language:
English
Version:
15/02/2021
File size:
532.1 KB
File name:
XA01259G-A00EN02.21.pdf
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Ex Safety Instruction (XA)
Prothermo NMT539 - Safety Instruction
Safety Instructions for Electrical Apparatus Certified for Use in
Explosion-hazardous Areas
Designation according to IECEx 02EN Select other language 14/11/201418/05/2011Language:
English
Version:
14/11/2014
File size:
351.4 KB
File name:
XA00583G-B08EN02.14.pdf
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-
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Ex Safety Instruction (XA)
NMT539_70.... Ex462-712 Rev. 3
Control drawing of the NMT539_70....
EN Select other language 14/12/2017Language:
English
Version:
14/12/2017
File size:
118.8 KB
File name:
NMT539-70_cFMus_en-fr.pdf
-
-
-
Ex Safety Instruction (XA)
Prothermo NMT539 - Safety Instruction KEMA 03 ATEX 1448 X
Safety Instructions for Electrical Apparatus Certified
for Use in Explosion-hazardous Areas
Designation according to Directive 94/9/ECEN Select other language 14/11/201418/05/2011Language:
English
Version:
14/11/2014
File size:
495.4 KB
File name:
XA00585G-B08EN02.14.pdf
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-
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Ex Safety Instruction (XA)
Average Temperature Prothermo NMT539
Tank Gauging
ATEX: II 1/2G Ex ia IIB T6…T2 Ga/Gb
II 2G Ex ia IIB T6...T2 Gb
IECEx: Ex ia IIB T6…T2 Ga/Gb
Ex ia IIB T6…T2 GbEN Select other language 31/10/2022Language:
English
Version:
31/10/2022
File size:
733.7 KB
File name:
XA01790GEN_0322-00.pdf
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-
-
Ex Safety Instruction (XA)
NMT539-70... Ex461-851 Rev.2
Control drawing of the NMT539-70.....(converter only version) for use in
U.S.A.
Ex461-851 Rev.2Language:
English
Version:
25/07/2017
File size:
42.2 KB
File name:
Ex461-851-2_XA01672A_NMT539-70.pdf
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-
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Ex Safety Instruction (XA)
Ex462-712 Rev. 3
Control drawing of the NMT539_70.... for use in Canada.
EN Select other language 25/07/2017Language:
English
Version:
25/07/2017
File size:
49.4 KB
File name:
Ex462-712-3_XA01675A-FR_NMT539-70_cFM_Fr.pdf
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-
-
Ex Safety Instruction (XA)
Prothermo NMT539
INMETRO: Ex ia IIB T6…T2 Ga/Gb
Ex ia IIB T6...T2 GbEN Select other language 15/03/2023Language:
English
Version:
15/03/2023
File size:
737.5 KB
File name:
XA02656GEN_0223-00.pdf
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