Endress+Hauser Prothermo NMT 539 User manual

Products Solutions Services
Operating Instructions
Prothermo NMT539
Average temperature device
Device functions
BA01026G/00/EN/22.19
71435462
2019-04-26

Prothermo NMT539
2 Endress+Hauser
Order code:
Ext. ord. cd.:
Ser. no.:
www.endress.com/deviceviewer Endress+Hauser
Operations App
XXXXXXXXXXXX
XXXXX-XXXXXX
XXX.XXXX.XX
Serial number
1.
3.
2.
A0023555

Prothermo NMT539 Table of contents
Endress+Hauser 3
Table of contents
1 About this document ................ 4
1.1 Document function ..................... 4
1.2 Symbol .............................. 4
1.3 Documentation ........................ 7
1.4 Registered trademarks ................... 7
2 Basic safety instructions ............ 8
2.1 Requirements for personnel ............... 8
2.2 Designated use ........................ 8
2.3 Workplace safety ....................... 8
2.4 Operational safety ...................... 9
2.5 Product safety ......................... 9
3 Product description ................ 10
3.1 Product design ........................ 10
3.2 Technical data ........................ 10
3.3 Description of functions ................. 13
4 Adjustment and settings ........... 18
4.1 Local HART connection ................. 18
4.2 Device configuration: NRF590 ............ 19
4.3 Device configuration: NMS5/NMS7 ........ 19
4.4 Configuring NMT539 with NMS8x/NMR8x/
NRF81 ............................. 21
5 Operation ......................... 28
5.1 HART device codes ..................... 28
5.2 Device data .......................... 28
5.3 Temperature measurement .............. 28
5.4 WB measurement ..................... 42
5.5 Temperature + water bottom measurement .. 47
5.6 Exclusion of WB temperature elements from
average temperature calculation ........... 47
5.7 WB (water bottom) level input from host .... 48
5.8 Temperature element near the tank bottom .. 49
5.9 Write-protection switch (write-protection
plug) ............................... 51
5.10 Module configuration .................. 51
Index .................................. 52

About this document Prothermo NMT539
4 Endress+Hauser
1 About this document
1.1 Document function
These Operating Instructions contain all the information that is required during various
phases of the life cycle of the device: from product identification, incoming acceptance and
storage, to mounting, connection, operation and commissioning through to
troubleshooting, maintenance and disposal.
1.2 Symbol
1.2.1 Safety symbols
Symbol Meaning
DANGER
DANGER!
This symbol alerts you to a dangerous situation. Failure to avoid this situation will
result in serious or fatal injury, as well as a risk of fire or explosion.
WARNING
WARNING!
This symbol alerts you to a dangerous situation. Failure to avoid this situation will
result in a risk of serious or fatal injury, fire or explosion.
CAUTION
Note
This symbol alerts you to a dangerous situation. Failure to avoid this situation will
result in a risk of minor or moderate injury and damages to properties.
NOTICE
NOTE!
This symbol contains information on procedures and other facts that do not result in
personal injury.
1.2.2 Electrical symbols
Symbol Meaning
Direct current
Alternating current
Direct current and alternating current
Ground connection
A grounded terminal that, as far as the operator is concerned, is grounded via a
grounding system.
Protective ground connection
A terminal that must be connected to the ground prior to establishing any other
connections.
Equipotential connection
This connects with the grounding system at the plant. It includes equipotential line
and single point ground systems, depending on the norms of each country or
company.

Prothermo NMT539 About this document
Endress+Hauser 5
1.2.3 Tool symbols
Symbol Meaning
A0013442
Torx screwdriver
A0011220
Flat blade screwdriver
A0011219
Phillips screwdriver
A0011221
Allen key
A0011222
Open-ended wrench
1.2.4 Symbols for certain types of information
Symbol Meaning
Permitted
Procedures, processes or actions that are permitted
Preferred
Procedures, processes or actions that are preferred
Forbidden
Procedures, processes or actions that are forbidden
Tip
Indicates additional information
Reference to documentation
A
Reference to page
Reference to graphic
Notice or individual step to be observed
1.
,
2.
,
3.
… Series of steps
Result of an operation or commissioning
Help in the event of a problem
Visual inspection
Operation via the local display
Operation via operating tool
Write-protected parameter

About this document Prothermo NMT539
6 Endress+Hauser
1.2.5 Symbols in graphics
Symbol Meaning
1, 2, 3 ... Item numbers
1.
,
2.
,
3.
… Series of steps
A, B, C, ... Graphics
A-A, B-B, C-C, ... Cross-sections
-
Hazardous area
Indicates the hazardous area
.
Safe area (non-hazardous area)
Indicates the non-hazardous area
1.2.6 Device symbol
Symbol Meaning
Safety instructions
Observe the safety instructions contained in the associated Operating Instructions.
Temperature resistance of the connection cables
Specifies the minimum value of the temperature resistance of the connection cables.

Prothermo NMT539 About this document
Endress+Hauser 7
1.3 Documentation
For an overview of the scope of the relevant Technical Documentation included with
the product, refer to the following:
• The W@M Device Viewer: Enter the serial number from the nameplate
(www.endress.com/deviceviewer).
• The Endress+Hauser Operations App: Enter the serial number from the nameplate
or scan the 2-D matrix code (QR code) on the nameplate.
1.3.1 Technical information
The Technical Information contains all the technical data on the device and provides an
overview of the accessories and other products that can be ordered for the device.
Device Technical Information
Prothermo NMT539 TI01005G
1.3.2 Operating instructions (BA)
The Operating Instructions contain all the information that is required during various
phases of the life cycle of the device: from product identification, incoming acceptance and
storage, to mounting, connection, operation and commissioning through to
troubleshooting, maintenance and disposal.
The Operating Instructions also contain detailed descriptions of each parameter in the
operation menu. The description is aimed at those who work with the device over the
entire life cycle and perform specific configurations.
Device Operating Instructions
Prothermo NMT539 BA01025G
BA01026G
1.3.3 Safety instructions (XA)
Feature 010 ("Approval") Meaning Ex / XA
A Ex ia IIB T4 Ex463-820XJ
Ex1060-953XJ
Ex496-826XJ
B ATEX Ex ia IIB T2-T6 XA00585G
C Ex ia IIB T2 Ex495-823XJ
E Ex d[ia] IIB T4 Ex1061-986XJ
F IEC Ex ia IIB T2-T6 XA01790G
G NEPSI Ex ia IIB T2-T6 XA01259G
7 FM C/US IS Ci. I Div.1 Gr. C-D Ex461-851-1
Ex461-850-1
1.4 Registered trademarks
FieldCare®
Registered trademark of the Endress+Hauser Process Solutions AG, Reinach, Switzerland.
HART®
Registered trademark of the FieldComm Group, Austin, USA.

Basic safety instructions Prothermo NMT539
8 Endress+Hauser
2 Basic safety instructions
2.1 Requirements for personnel
The personnel for installation, commissioning, diagnostics and maintenance must fulfill
the following requirements:
‣Be specialists who are trained and have a relevant qualification for this specific
function and task.
‣Be authorized by the plant owner-operator.
‣Be familiar with local/national regulations.
‣Before starting work, read and understand the instructions in the Operating
Instructions and supplementary documentation as well as the certificates (depending
on the application).
‣Follow instructions and comply with basic conditions.
The operating personnel must fulfill the following requirements:
‣Be instructed and authorized according to the requirements of the task by the facility's
owner-operator.
‣Follow the instructions in this manual.
2.2 Designated use
Application and measured materials
Depending on the version ordered, the device can also be used with potentially explosive,
flammable, poisonous or oxidizing materials.
Devices that are used in hazardous areas have corresponding labels on their nameplates.
To ensure that the device remains in proper condition for the operation time:
‣Only use the device in full compliance with the data on the nameplate and the general
conditions listed in the Operating Instructions and supplementary documentation.
‣Check the nameplate to verify if the device can be put to its intended use in hazardous
areas.
‣If the device is not operated at an atmospheric temperature, compliance with the
relevant basic conditions specified in the relevant device documentation is absolutely
essential.
‣Protect the device permanently against corrosion from environmental influences.
‣Observe the limit values in the "Technical Information".
The manufacturer is not liable for damage caused by improper or non-designated use.
2.3 Workplace safety
For work on and with the device:
‣Wear the required personal protective equipment according to local/national
regulations.

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Endress+Hauser 9
2.4 Operational safety
Risk of injury!
‣Operate the device in proper technical conditions and fail-safe conditions only.
‣The plant owner-operator is responsible for interference-free operation of the device.
Modifications to the device
Unauthorized modifications to the device are not permitted and can lead to unforeseeable
dangers:
‣If modifications are nevertheless required, contact your Endress+Hauser Sales Center.
Repair
To ensure continued operational safety and reliability:
‣Carry out repairs on the device only if they are expressly permitted.
‣Observe local/national regulations pertaining to repair of an electrical device.
‣Use only original spare parts and accessories from Endress+Hauser.
Ex-area
Observe the following notes to eliminate the risk of danger to persons or the facility when
the device is used in Ex-areas (e.g. explosion protection, pressure equipment safety):
‣Check the model nameplate to ensure that the ordered device is explosion proof.
‣Observe the specifications in the separate supplementary documentation attached to
these Instructions.
2.5 Product safety
This device was designed in accordance with GEP (Good Engineering Practice) to meet
state-of-the-art safety requirements, has been tested and left the factory in a condition in
which it is safe to operate. It meets the general safety standards and legal requirements.

Product description Prothermo NMT539
10 Endress+Hauser
3 Product description
3.1 Product design
NMT539 performs precise liquid and gas phase average temperature measurement, which
makes it ideal for inventory management of large-scale tanks.
It is equipped with a capacitance WB device in crude oil and two-phase liquids, and it
performs accurate average temperature and WB measurements.
The position of the flange cannot be adjusted in a welding flange type.
3.2 Technical data
Item Details
Application • Flange installation: Standard 50.8 mm (2 in)
• Temperature measuring range: Maximum length 99.999 m (3.94 in) (ATEX, IECEx, NEPSI, FM C/US), maximum length
40.000 m (1.57 in) (TIIS)
• WB measuring range: 1 m (3.28 ft) or 2 m (6.56 ft)
Measuring principle • Temperature measurement
NMT539 consists of up to 16 platinum resistance elements (Pt100) in a SUS316 protection tube. Pt100 has a unique
characteristic of linear resistance change with respect to the surrounding ambient temperature change. A module in the
NMT539 converter receives this resistance signal change as an input variable and converts it to temperature data. The
converted and calculated data are then transmitted to the host device as a local HART signal.
• Water bottom (water interface level) measurement
An attached capacitance level measurement probe detects the presence of water.The WB is converted into a given frequency
variable (default setting) and its data is transmitted via local HART converter to the connected host device.
Minimum element
interval (distance)
• Standard specifications: 150 mm (5.9 in) (Order Code: 030 Option 1, 4, 5)
• High temperature / Low temperature: 400 mm (15.75 in) (Order Code: 030 Option 2, 3, 6)
If NMT539 comes with a WB (water bottom) probe option, the maximum number of WB internal elements is two,
because of the restriction posed by the internal diameter.
Device structure RTD average temperature signal for local HART conversion
RTD average temperature measurement + local HART converter
Average temperature + WB measurement + local HART converter
Measuring range • Temperature measurement
• Temperature conversion: –200 to 235 °C (–328 to 455 °F) (–170 to 235 °C (–274 to 455 °F) TIIS)
• Standard: –40 to 100 °C (–40 to 212 °F) (–20 to 100 °C (–4 to 212 °F) TIIS)
• Wide range: –55 to 235 °C (–67 to 435 °F) (–20 to 235 °C (–4 to 455 °F) TIIS)
• Cryogenic: –170 to 60 °C (–274 to 140 °F)
• Probe length: Maximum length 99.999 m (328.08 ft) (ATEX, IECEx, NEPSI, INMETRO, FM C/US)
Maximum length 40.000 m (131.23 ft) (TIIS)
• WB measurement
Standard probe range: 1 m (3.28 ft) or 2 m (6.56 ft)
–200 to 100 °C (–328 to 212 °F), which is below cryogenic temperature, can be accommodated upon request.
Output signal Local HART protocol, exclusively for the local host device
Alarm signal Error information can be accessed via the following interfaces and transmitted digital protocol (refer to "Prothermo NMT539
Operating Instructions and Description of Instrument Function" for the following instruments):
• NRF590 (BA00256F, BA00257F)
• NMS5 (BA00401G)
• NMS8x (BA1456G, BA1459G, BA1462G)
• NMR8x (BA01450G, BA01453G)
• NRF81 (BA01465G)
Local HART load Minimum loading for local HART circuit: 250 Ω
Cable glands Thread G1/2, Thread NPT1/2, Thread M20
Supply voltage • DC 16 to 30 V: Ex ia
• DC 20 to 24 V: Ex d [ia]