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.

Prothermo NMT539 Basic safety instructions
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]

Prothermo NMT539 Product description
Endress+Hauser 11
Item Details
Power consumption Ex ia: 6 mA (temperature measurement), 12 mA (WB measurement), Ex d [ia]: 8 mA (temperature measurement), 14 mA
(WB measurement)
Reference operating
conditions
• Temperature: 25 °C (77 °F) ± 5 °C (9 °F)
• Pressure: 1 013 mbar abs. ± 20 mbar abs. (1 013 hPa abs. ± 20 hPa abs. , 14.7 psi abs. ± 0.3 psi abs.)
• Relative humidity (air): 65 % ± 20 % (linearity)
• Converter and precision resistor combination or converter and probe combination
• WB measurement range: 80 % (100 to 900 mm (3.94 to 35.43 in))
• The factory default is adjusted based on DC (er) = 2.1. Adjustment should be made on-site when necessary
Measured value
resolution
• Temperature: ≤ 0.1 °C (0.18 °F)
• WB: ≤ 0.1 mm (0.004 in)
Maximum
measurement error
The values below represent performances under the reference conditions (including linearity, repeatability, hysteresis).
Conversion accuracy
Temperature Standard /PTB spec. ± 0.1 °C (0.18 °F)
WB 1 m (3.28 ft) spec. ± 2 mm (0.08 in)
2 m (6.56 ft) spec. ± 4 mm (0.16 in)
Probe system
Temperature Standard spec. ± 0.15 °C + 0.002 °C x |t| (0.27 °F + 0.0036 °F |t|)
IEC 60751 / DIN EN 60751 / JIS C1604 Class A temperature element
PTB spec. ± (0.3 °C + 0.005 °C x |t|) / 10 ((0.54 °F + 0.009 °F x |t|) / 10)
Class 1/10B temperature element
WB 1 m (3.28 ft) spec. ± 2 mm (0.08 in)
2 m (6.56 ft) spec. ± 5 mm (0.2 in)
Overall accuracy
Temperature Standard spec. Conversion accuracy ± 0.1 °C (0.18 °F) + Environmental effect ± 0.05 °C (0.09 °F) +
Class A temperature element ± 0.15 °C + 0.002 °C x |t| (0.27 °F + 0.0036 °F x |t|)
PTB spec. Conversion accuracy ± 0.1 °C (0.18 °F) + Environmental effect ± 0.05 °C (0.09 °F) +
Class 1/10B temperature element ± (0.3 °C + 0.005 °C x |t|) / 10 (0.54 °F +
0.009 °F x |t| / 10)
WB 1 m (3.28 ft) spec. Conversion accuracy ± 2 mm (0.08 in) + Probe accuracy ± 2 mm (0.08 in)
2 m (6.56 ft) spec. Conversion accuracy ± 5 mm (0.2 in) + Probe accuracy ± 5 mm (0.2 in)
• Accuracy can be improved for each application by making adjustments on-site, such as adjusting the offset.
• |t| represents the temperature of the measured item.
Ambient
temperature
• –40 to 85 (–40 to 185)
• –20 to 60 °C (–4 to 140 °F): TIIS
Storage temperature –40 to 85 (–40 to 185)
Climate class DIN EN 60068-2-38 (test Z/AD)
Protection class • IP66/68 NEMA4X/6P: Converter set equipped with a temperature device or a WB device
• IP65 NEMA4X: Converter only (open housing: IP20)
Electromagnetic
compatibility
When installing the probes to metal or concrete tanks and when using a coax probe:
• Interference emission according to EN 61326, Electrical Equipment Class B
• Interference immunity according to EN 61326, Annex A (Industrial)
Process temperature
range
Temperature probe: –175 to 235 °C (–274 to 455 °F)
WB probe: –0 to 100 °C (32 to 212 °F)
Process pressure Atmospheric pressure (absolute pressure 1 bar, 100 kPa, 14.5 psi)
• Pressure tank: If the pressure inside the tank exceeds the process pressure shown above, install a stilling well
(protective tube) without holes or slits in the NMT539 to protect the probe from the pressure.
• Static pressure: Because NMT539 has undergone an airtightness test at an absolute pressure of 7 bar, it can withstand
static pressure head in the 50 m (164 ft) range in petroleum/chemical product applications.
Data transmission • Minimum cable diameter: #24 AWG
• Cable type: Twist pair with a shield

Product description Prothermo NMT539
12 Endress+Hauser
Item Details
Weight Approx. 13 kg
Conditions
• Number of elements: 16 points
• Temperature probe: 10 m (32.8 ft)
• WB probe: 1 m (3.28 ft)
• Flange: 2" 150 lbs RF, SUS316
Material • Temperature measurement elements: Class A Pt100, IEC60751/DIN EN60751/JISC1604
• Housing: Aluminum die cast
• Temperature probe: SUS316, SUS316L (refer to the "Dimension")
• WB probe: SUS316 (center rod SUS 304 / PFA protected)
Flange specifications • 10K 50A RF, SUS316, flange JIS B2220
• NPS 2" Cl.150 RF, SUS316 flange ASME B16.5
• DN50 PN10 B1, SUS316, flange EN1092-1 (DIN2527 B)
• 50A 150 lbs RF, SUS316, flange JPI 7S-15
• Universal coupling, G3/4, (converter only)
• M20 threaded (converter only)
CE approval By attaching the CE mark, Endress+Hauser confirms that the instruments have passed the required tests.
External standards
and guidelines
• EN 60529
• Protection class of housing (IP-code)
• EN 61326
• Emissions (equipment class B), compatibility (appendix A – industrial area)
Ex approvals ATEX
• II 1/2 G Ex ia IIB T2-T6 Ga/Gb (converter with temperature device and/or WB device)
• II 2G Ex ia IIB T2-T6 Gb (converter only)
IEC
• Ex ia IIB T2-T6 Ga/Gb (converter with temperature device and/or WB device)
• Ex ia IIB T2-T6 Ga (converter only)
FM C/US
Converter with temperature device and/or WB device
• IS Cl. I, Div. 1, Gr. C, D T2-T6
• IS Cl. I, Zone 0, AEx ia IIB Ga T2-T6
• NI Cl. I, Div. 2, Gr. C, D T2-T6
Converter only
• IS Cl. I, Div. 1, Gr. C, D T4
• IS Cl. I, Zone 0, AEx ia IIB Ga T4
• NI Cl. I, Div. 2, Gr. C, D T4
TIIS
• Ex ia IIB T4 (converter with temperature device and/or WB device) (converter only)
• Ex ia IIB T2 (converter with temperature device)
• Ex d[ia] IIB T4 (converter with temperature device and/or WB device)
NEPSI
• Ex ia IIB T2-T6 (converter with temperature device and/or WB device)
• Ex ia IIB T2-T6 Ga (converter only)

Prothermo NMT539 Product description
Endress+Hauser 13
3.3 Description of functions
Detailed descriptions of the function groups, functions and parameters are given in
"NMT539 Operating Instructions and Description of Instrument Functions. "When
NMT539 with WB probe and NRF590 are used together, confirm that the supply voltage
to TMD1/NMS/TGM/NRF590 is stable at a voltage of 100 VAC or higher.
3.3.1 NMT539 Ex ia and NMS8x Exd [ia] combination
he connection of NMT539 shown below is only available for connection with NMS5 or
NMS8x.
b c
a e
d
f
3
2
1
A0038539
 1 NMS8x and NMS539 system design
a Fieldbus protocol
b Power supply
c Local HART (Ex i) loop (data transmission)
d Level
e Gas temperature
f Liquid temperature
1 Tankvision
2 NMS8x
3 NMT539
Typical application of NMT539 converter + temperature probe version
NMT539 is the successor of the former NMT535. For proper migration, NMT539 has
inherited all the functionality and specifications of NMT535, including connection flange
specifications, cable entries and wiring method. Since NMS5 or NMS8x is provided with
WB measurement function, they can be combined with the converter + average
temperature probe version of NMT539. When the converter + average temperature probe
+ WB probe version is combined with NMS5 or NMS8, the product in the tank will
simultaneously be managed with level, continuous temperature and WB measurements.
Most changes and parameter settings for NMT539 can be performed by NMS5 or NMS8x.
NMT539 receives liquid level data from NMS5 or NMS8x and then calculates the average
temperature of the liquid and gas phases. The calculated average temperature data of the

Product description Prothermo NMT539
14 Endress+Hauser
liquid and gas phases are transmitted to NMS8x or NMS5 along with the measured
temperature of each element and the NMT539 device status.
All gathered data in the field interface unit are sent to inventory management
software (Tankvision) or to NMS8x, NMS5x, NMS7, NMR8x, NRF8x or NRF590.
3.3.2 NMT539 Ex ia and NMR8x Ex d [ia] combination
The connection of NMT539 shown below is only available for connection with NMR8x Ex
d [ia].
NRF81 is required as a gateway for FMR5xx and NMT539 Tankvision when using FMR5xx
Ex ia radar.
b
a
c
e
d
f
3
2
1
A0038540
 2 NMT539 Ex ia and NMR8x combination
a Fieldbus protocol
b Power supply
c Local HART (Ex i) loop (data transmission)
d Level
e Gas temperature
f Liquid temperature
1 Tankvision
2 NMR8x
3 NMT539

Prothermo NMT539 Product description
Endress+Hauser 15
3.3.3 NMT539 Ex ia and NRF590 Ex d [ia] combination
Typical application of NMT539 converter + temperature probe + WB probe version
The NMT539 converter + temperature probe + WB probe version is utilized most
effectively in combination with radar level gauging. Water interface, temperature and
liquid level measurement, with data collection and calculations via the NRF590 or NRF81,
allow for optimal inventory control.Details on NMT539 functions and data can be accessed
from NRF81 or NRF590. NMT539 receives radar level data from NRF590 or NRF81 and
then calculates the average temperature of the liquid and gas phases. The calculated
average temperature data of the liquid and gas phases are transmitted to NRF81 or
NRF590 along with the measured temperature of each element and the NMT539 device
status.
All gathered data in the field interface unit are sent to inventory management
software (Tankvision) or to NMS8x, NMS5x, NMS7, NMR8x, NRF8x or NRF590.
2
3
1
a
b
c
d
f
e
4
g
h
A0038541
 3 NMT539 Ex ia and NRF590 Ex d [ia] combination
a FMR power supply (DC/Ex i)
b Local HART (Ex i) loop (data transmission)
c Gas temperature
d Level
e Liquid level temperature
f Water
g Fieldbus protocol
h Power supply
1 FMR540
2 NMT539
3 NRF81/NRF590
4 Tankvision

Product description Prothermo NMT539
16 Endress+Hauser
3.3.4 NMT539 Ex d [ia] and TMD1 Ex d combination
Average temperature device NMT539 can be connected to Transmitter TMD1 or Servo
Level Gauge TGM5 via local HART (Ex d) communication. Because local HART
communication is digital, it is able to send a larger volume of information compared to the
conventional RTD method. This means that NMT539 can work with not just DRM9700 but
also with NRF560. If NMT539 WB probe and NRF560 are used together, confirm that the
supply voltage to TMD1 is stable at 100 VAC or higher.
a
b
c
d
1
3
4
2
5
b
A0038542
 4 NMT539 Ex d [ia] and TMD1 combination
a Local HART (Ex d) loop (data transmission)
b Power supply
c Fieldbus protocol
d HART (Ex d) loop (data transmission)
1 NMT539
2 Tankvision
3 LT5
4 TMD1
5 NRF560

Prothermo NMT539 Product description
Endress+Hauser 17
3.3.5 NMT539 Ex d [ia] and TGM5 combination
When NMT539 with WB probe and NRF560 are used together, confirm that the supply
voltage to TGM5 is stable at 100 VAC or higher.
2
3
b
a
cd
b
4
5
6
7
1
A0038543
 5 NMT539 Ex d [ia] and TGM5 combination
a Fieldbus protocol
b Power supply
c Local HART (Ex d) loop (NMT539 and TGM5)
d Local HART (Ex d) loop (TGM5 and NRF560)
1 Tankvision
2 TGM5
3 NMT539
4 NRF560
5 Level
6 Gas temperature
7 Liquid temperature

Adjustment and settings Prothermo NMT539
18 Endress+Hauser
4 Adjustment and settings
4.1 Local HART connection
4.1.1 Endress+Hauser tank gauging instrument
NMT539 is designated to work with Endress+Hauser tank instruments tank side monitors
NRF590, NRF81 or Proservo NMS5, NMS7, NMS8x or NMR8x to build a comprehensive
instrumentation system. Both temperature and/or WB information is transmitted via
HART loop. NRF590, NRF81 and NMS5, NMS, NMS8x and NMR8x have a settings menu
for the NMT Series by default, which means that they can configure NMT539 default
settings.
• The parameters listed in this document are parameters that can be checked when
the instruments are connected to NMT539 with FieldCare. Since the parameters
that can be checked from the HMI of the connected HART Master, such as NMS8x
and NMS5, differ depending on which HART Master is being used, refer to the
respective operating instructions.
• Before starting up NMT539, refer to "Prothermo NMT539 Operating Instructions"
and check the installation procedure.
• There are four types of standard basic data depending on the NMT539
measurement function.
4.1.2 Measuring functions
Temperature measurement
0Converter only
1Temperature + converter
These four types of basic data are available as standard.
• Average liquid temperature
• Average gas temperature
• Level (VH02 measured distance)
• Device status
Water bottom measurement
2WB probe + converter
These four types of basic data are available as standard.
• WB level
• WB probe capacitance
• WB probe frequency
• Device status
Temperature + WB + converter
3Temperature + WB + converter
These four types of basic data are available as standard.

Prothermo NMT539 Adjustment and settings
Endress+Hauser 19
• Average liquid temperature
• WB level
• Average gas temperature
• Device status
4.2 Device configuration: NRF590
Connect the loop-powered local HART communication cable from NRF590 (intrinsically
safe side compartment) to NMT539 according to "Prothermo NMT539 Operating
Instructions. " NRF590 has been designed to recognize NMT539 as a specific Endress
+Hauser local HART device.
4.2.1 HART scanner
Once NMT539 and NRF590 have been wired together, all HART devices will be scanned
automatically when NRF590 is turned on.
Not all NRF590 are fully compatible for recognizing NMT539. Contact your Endress
+Hauser Sales Center for information on NRF590 software and hardware version
compatibility.
4.2.2 NMT539 specific parameter setup for NRF590
The configuration of NMT539 parameters displayed on NRF590 depends on the installed
software and hardware versions of NRF590. Refer to the NRF590 operating manual to
determine accessible parameters. All default settings and parameter configurations can be
carried out using FieldCare. Detailed information will be provided in the following sections.
4.3 Device configuration: NMS5/NMS7
NMS5/NMS7 are specifically designed to recognize NMT539 as HART Master. Terminals
24 and 25 of NMT539 and NMS5/NMS7 are connected with a local HART cable.
Connection between NMS5/NMS7 and NMT539 is required for Ex Approval. Follow
the separate BA01025G operating instructions, "4.4.Terminal connection."
4.3.1 Preparation for NMS5/NMS7 configuration
NMS5/NMS7 must be set to default before connecting to NMT539.
Code Display Details
GVH362 NMT Connection Select "NMT Connection" and "Average" and configure the NMT.
To change this parameter, an access code is required. For
details, see "Prothermo NMT539 Operating Instructions."
4.3.2 Configuring NMT539 with NMS5/NMS7
NMT539 parameters can be configured using the NMS5/NMS7 programming matrix G4
"Temperature Device."
Typical NMT539 parameters (same as NMT535) are displayed in the NMS5/NMS7
matrix.
WB probe information is not available on NMS5/NMS7 ROM version 4.24 or earlier
versions. Contact your Endress+Hauser Sales Center to update existing NMS5/NMS7
functions.

Adjustment and settings Prothermo NMT539
20 Endress+Hauser
G0 Static Matrix
Code Display Details
GVH010 Liquid temp NMT539 displays the average liquid temperature.
GVH013 Gas temp NMT539 displays the average gas temperature.
G4 Temperature Matrix
Code Display Details
GVH440 Liquid temp Displays the same value indicated in GVH010: Liquid temp
GVH441 Gas temp Displays the same value indicated in GVH013: Gas temp
GVH442 Level The liquid level collected from NMS5/NMS7 is selected as either
GVH000: Level (Displacer position) or GVH008: Level data
(Level). NMT539 calculates both liquid and gas phase
temperatures based on this liquid level data.
GVH447 Element No. 0 temp Checks that the measuring temperature resistor temperature
conversion is executed correctly.
The tolerance range is –1.0 to 1.0 °C (–30.2 to 33.8 °F).
GVH449 Element temp 17 temp This temperature is used for checking when shipping from the
factory.
GVH450-459 Element temp No.1-10
temp
The measured temperature is the temperature data collected
from each element (maximum 16 points). The temperature
measurement elements 11 to 16 are selected from GVH470
"Select point," and the selected element is displayed in GVH473
"Element temp."
GVH460-469 Element No.1-10
position
Indicates the position of each element in the probe. Temperature
measurement elements 11 to 16 are selected from GVH470
"Select point," and the selected element is displayed in GVH474
"Element position."
GVH470 Select point A matrix is selected for GVH471 "Zero Adjust," GVH473 "Element
temp" and GVH474 "Element position," and required element
data are input.
GVH480 Diagnostic Displays error code messages. Refer to the error code chart in
this manual.
GVH482 Element number The number of elements installed on the temperature
measurement tube is entered.
GVH485 Type of interval Sets measurement element intervals. If the element intervals are
equal, select GVH487 "Element interval" to set the interval, and
then select GVH486 "Bottom point" to set the height of the
lowest edge of the elements. If the element intervals are not
equal, manually set the intervals.
This parameter configuration is only used to change the
theoretical element position within NMT539's software for
average temperature calculation. The physical positions of
the elements will not change.
GVH486 Bottom point Sets the height of the lowest element. This is only set when the
elements have equal intervals.
This parameter configuration is only used to change the
theoretical element position within NMT539's software for
average temperature calculation. The physical positions of
the elements will not change.
GVH487 Element interval The element interval is entered if "Equal interval" was selected in
GVH485 "Type of interval."
This parameter configuration is only used to change the
theoretical element position within NMT539's software for
average temperature calculation. The physical positions of
the elements will not change.