TI01251G/00/EN/05.23-00
71632005
2023-11-01

Products

Solutions

ServicesTechnical Information
Tankside Monitor NRF81
Tank Gauging

Application
Tankside Monitor NRF81 is a robust gateway for collecting and integrating tankgauging data in storage and process applications. It fulfills the exacting demands oftank inventory management, inventory control, custody transfer, loss control, total
cost saving, and safe operation.
Typical areas of application• Hydrostatic Tank Gauging• Hybrid Tank Measurement Systems
Your benefits• SIL2 certified• SIL2 as per IEC 61508, SIL3 for homogeneous or diverse redundancy• Up to 6 SIL relay outputs• Wide range of output signals including V1, Modbus RS 485, and HART protocol• Integration of e.g. temperature, water level, pressure, overfill prevention sensor• Robust IP66/68, NEMA Type 4X/6P enclosure, stainless steel or aluminum• Operation and display in a wide variety of local languages

Tankside Monitor NRF81

Table of contentsDocument information . . . . . . . . . . . . . . . . . . . . . . . 3

Symbols . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3

Function and system design . . . . . . . . . . . . . . . . . . . 5

Integration of tank sensors . . . . . . . . . . . . . . . . . . . . . . . 5

Input/output . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6

HART Ex ia/IS active input . . . . . . . . . . . . . . . . . . . . . . . 6
I/O modules . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7

Power supply . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Terminal assignment . . . . . . . . . . . . . . . . . . . . . . . . . .
Supply voltage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Power consumption . . . . . . . . . . . . . . . . . . . . . . . . . . .
Cable entries . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Cable specification . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Overvoltage protection . . . . . . . . . . . . . . . . . . . . . . . . .
Overvoltage category . . . . . . . . . . . . . . . . . . . . . . . . . .
Pollution degree . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

16

16
17
17
18
18
18
18
18

Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19

Installation conditions . . . . . . . . . . . . . . . . . . . . . . . . .

19

Environment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21

Ambient temperature range . . . . . . . . . . . . . . . . . . . . .
Classification of environmental conditions according to
DIN EN 60721-3-4 . . . . . . . . . . . . . . . . . . . . . . . . . . .
Storage temperature . . . . . . . . . . . . . . . . . . . . . . . . . .
Humidity . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Degree of protection . . . . . . . . . . . . . . . . . . . . . . . . . .
Shock resistance . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Vibration resistance . . . . . . . . . . . . . . . . . . . . . . . . . . .
Electromagnetic compatibility (EMC) . . . . . . . . . . . . . . .
Maximum use altitude . . . . . . . . . . . . . . . . . . . . . . . . .

21

21
21
21
21
21
21
21
21

Custody transfer approval . . . . . . . . . . . . . . . . . . .

22

Mechanical construction . . . . . . . . . . . . . . . . . . . .

23

Weight & Measure approval . . . . . . . . . . . . . . . . . . . . . 29
Non-ionizing radiation protection . . . . . . . . . . . . . . . . . . 29
Test, certificate . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29
Other standards and guidelines . . . . . . . . . . . . . . . . . . . 29

Ordering information . . . . . . . . . . . . . . . . . . . . . . . 30

Ordering information . . . . . . . . . . . . . . . . . . . . . . . . . . 30
Marking . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30

Application packages . . . . . . . . . . . . . . . . . . . . . . . 31

Advanced tank measurement methods . . . . . . . . . . . . . .

31

Accessories . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 40

Device-specific accessories . . . . . . . . . . . . . . . . . . . . . .
Communication-specific accessories . . . . . . . . . . . . . . . .
Service-specific accessories . . . . . . . . . . . . . . . . . . . . . .
System components . . . . . . . . . . . . . . . . . . . . . . . . . . .

40
41
41
41

Documentation . . . . . . . . . . . . . . . . . . . . . . . . . . . . 42

Technical Information (TI) . . . . . . . . . . . . . . . . . . . . . . 42
Brief Operating Instructions (KA) . . . . . . . . . . . . . . . . . . 42
Operating Instructions (BA) . . . . . . . . . . . . . . . . . . . . . 42
Description of Device Parameters (GP) . . . . . . . . . . . . . . . 42
Safety Instructions (XA) . . . . . . . . . . . . . . . . . . . . . . . . 42
Installation instructions (EA) . . . . . . . . . . . . . . . . . . . . . 42

Registered trademarks . . . . . . . . . . . . . . . . . . . . . . 42

Dimensions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23
Weight . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23
Materials . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23

Operability . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25

Operating concept . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Operating options . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Local operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Remote operation . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Operation via service interface . . . . . . . . . . . . . . . . . . . .

25
25
25
26
27

Certificates and approvals . . . . . . . . . . . . . . . . . . .

28

CE mark . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28
RCM marking . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28
Ex approval . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28
Single seal according to ANSI/ISA 12.27.01 . . . . . . . . . . . 28
Functional Safety (SIL) . . . . . . . . . . . . . . . . . . . . . . . . . 28
WHG . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28

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Tankside Monitor NRF81

Document information
Symbols

Safety symbols
DANGER

This symbol alerts you to a dangerous situation. Failure to avoid this situation will result in serious or
fatal injury.
WARNING

This symbol alerts you to a dangerous situation. Failure to avoid this situation can result in serious or
fatal injury.
CAUTION

This symbol alerts you to a dangerous situation. Failure to avoid this situation can result in minor or
medium injury.
NOTICE

This symbol contains information on procedures and other facts which do not result in personal
injury.
Electrical symbols
Alternating current
Direct current and alternating current
Direct current
Ground connection
A grounded terminal which, as far as the operator is concerned, is grounded via a grounding system.
Protective earth (PE)Ground terminals that must be connected to ground prior to establishing any other connections.
The ground terminals are located on the interior and exterior of the device:• Interior ground terminal: protective earth is connected to the mains supply.
• Exterior ground terminal: device is connected to the plant grounding system.
Tool symbols
Phillips head screwdriver
Flat blade screwdriver
Torx screwdriver
Allen key
Open-ended wrench
Symbols for certain types of information and graphics
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

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Tankside Monitor NRF81

Reference to documentation
Reference to graphic
Notice or individual step to be observed
1. , 2. , 3.
Series of steps

Result of a step
Visual inspection
Operation via operating tool
Write-protected parameter
1, 2, 3, ...
Item numbers
A, B, C, ...
Views
Safety instructions
Observe the safety instructions contained in the associated Operating Instructions
Temperature resistance of the connection cablesSpecifies the minimum value of the temperature resistance of the connection cables

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Tankside Monitor NRF81

Function and system design
Integration of tank sensors

The Tankside Monitor is a field device for the integration of tank sensors into tank inventory
systems. It is typically installed at the bottom of the tank and allows access to all connected tanksensors. All measured and calculated values can be displayed at the on-site display. Via a fieldcommunication protocol, they can be transferred to an inventory control system.
B
4-20 mA

A
HART
HART

HART

2

3

4-20 mA
HART
3
2

4
1

4
1

5

5

6

6

A0023766

1
A
B
1
2
3
4
5
6

Integration of tank sensors with Tankside Monitor (Example)
HART multidrop mode
HART and analog mode
Pressure transmitter
Level radar
Average temperature transmitter
Tankside Monitor
Field protocol transmits data to an inventory control system
Inventory control system (e.g. Tankvision NXA820 or Tankvision Professional NXA85)

Typical values measured by the sensors are:• Level• Spot temperature• Average temperature• Water level• Pressure• Secondary level value (for critical applications)

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Tankside Monitor NRF81

Input/output
HART Ex ia/IS active input

D
1
2

E
CDI

1 2 3 E4D

1 2 3 4C

1 2 3 4 5 6 7 8

1
2
1

CDI

i

F 21

1

3
4

B

1 2 3 4 5 6 7 8A

1 2 3 4

1

C

G2

HR

1 2 3 4
3

POWER

on
WP
SIM

A0027364

2
E1
E2

HART Ex ia/IS active input
HART +
HART -The device has a HART Ex ia/IS active input. Additional features are provided if the following
Endress+Hauser devices are connected:• Prothermo NMT
The measured level is transmitted to the Prothermo. Prothermo uses this level to calculate theaverage temperature of the product.
• Micropilot S FMR53x
The calculated distance correction factor or distance correction value is sent to the Micropilot.
Micropilot uses this value to indicate the corrected level at its local display.
Technical data
• Transmitter power supply voltage
23.0 V - 380 Ω ⋅ Iload• Maximum load
500 Ω including signal line
• Maximum current of all connected devices
24 mA
The HART Ex ia/IS active input is available by default. It needs not to be chosen explicitly whenordering a device.

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Tankside Monitor NRF81

I/O modules

Overview

D

1 2 3 4C

1 2 3 4 5 6 7 8B

1 2 3 4 5 6 7 8A

1 2 3 4D

1 2 3 4C

1 2 3 4 5 6 7 8B

1 2 3 4 5 6 7 8A

1 2 3 4

1
2

E

1
2

E
1

CDI

3
4

1

CDI

i

F 12
1

G2

HR
on

3

WP
SIM

POWER

i

F 12
G12

3
4

HR
on
POWER

WP
SIM

A0027363

3

Position of the I/O modules in the terminal compartment

The terminal compartment contains up to four I/O modules, depending on the order code.
• Modules with four terminals can be in any of these slots.
• Modules with eight terminals can be in slot B or C.
The exact assignment of the modules to the slots is dependent on the device version. For adetailed description refer to the Operating Instructions of the device in question.
The following restrictions apply when selecting the modules:• The device may contain a maximum of four I/O modules.
• A maximum of two I/O modules with 8 terminals is possible.
Ordering feature 040: "Primary Output"
NRF81 - xxxx XX xx xx ...
040

O 1)

N 2)

T 3)

S 4)

1

4

→  104→  118→  13

Modbus RS485 5)
A1
V1

5)

B1

1

4-20mA HART Ex d/XP

5)

E1

1

4-20mA HART Ex i/IS

5)

H1

1

8

→  131

4→  12

WM550

5)

C1
1)
2)
3)
4)
5)

OptionNumber of I/O modules
Number of terminals
Technical data
Type of I/O module

Ordering feature 050: "Secondary I/O Analogue"
NRF81 - xxxx xx XX xx ...
050

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Tankside Monitor NRF81

Ordering feature 050: "Secondary I/O Analogue"• Type of I/O module:
1 x "Ex d/XP 4-20mA HART + RTD input"• Option
A1• Number of I/O modules
1• Number of terminals
1x8• Technical data →  13
• Type of I/O module:
2 x "Ex d/XP 4-20mA HART + RTD input"• Option
A2• Number of I/O modules
2• Number of terminals
2x8• Technical data →  13
• Type of I/O module:
1 x "Ex i/IS 4-20mA HART+ RTD input"• Option
B1• Number of I/O modules
1• Number of terminals
1x8• Technical data →  13
• Type of I/O module:
2 x "Ex i/IS 4-20mA HART+ RTD input"• Option
B2• Number of I/O modules
2• Number of terminals
2x8• Technical data →  13
• Type of I/O module:
1 x "Ex i/IS 4-20mA HART + RTD input"
1 x "Ex d/XP 4-20mA HART + RTD input"• Option
C2• Number of I/O modules
2• Number of terminals
2x8• Technical data →  13
• Type of I/O module:none• Option
X0• Number of I/O modules
0• Number of terminals
0• Technical data Ordering feature 060: "Secondary I/O Digital Ex d/XP"
NRF81 - xxxx xx xx XX ...
060

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Tankside Monitor NRF81

Ordering feature 060: "Secondary I/O Digital Ex d/XP"• Type of I/O module:
1 x "2x relay + 2x discrete I/O"
• Option
A1• Number of I/O modules
1• Number of terminals
1x4• Technical data →  15
• Type of I/O module:
2 x "2x relay + 2x discrete I/O"
• Option
A2• Number of I/O modules
2• Number of terminals
2x4• Technical data →  15
• Type of I/O module:
3 x "2x relay + 2x discrete I/O"
• Option
A3• Number of I/O modules
3• Number of terminals
3x4• Technical data →  15
• Type of I/O module:
1x "Modbus RS485"• Option
B1• Number of I/O modules
1• Number of terminals
3x4• Technical data →  10
• Type of I/O module:
1x "Modbus RS485"
1 x "2x relay + 2x discrete I/O"
• Option
B2• Number of I/O modules
2• Number of terminals
2x4• Technical data
→  10→  15• Type of I/O module:
1x "Modbus RS485"
2 x "2x relay + 2x discrete I/O"
• Option
B3• Number of I/O modules
3• Number of terminals
3x4• Technical data
→  10→  15Endress+Hauser

9Tankside Monitor NRF81• Type of I/O module:
1 x "WM550"• Option
E1• Number of I/O modules
1• Number of terminals
1x4• Technical data →  12
• Type of I/O module:
1 x "WM550"
1 x "2x relay + 2x discrete I/O"
• Option
E2• Number of I/O modules
2• Number of terminals
2x4• Technical data →  12
• Type of I/O module:
1 x "WM550"
2 x "2x relay + 2x discrete I/O"
• Option
E3• Number of I/O modules
3• Number of terminals
3x4• Technical data →  12
• Type of I/O module:none• Option
X0• Number of I/O modules
0• Number of terminals
0• Technical data "Modbus RS485": Technical data
Number of units
Maximum 15 instruments per loop
Baud rate: Selectable• 600 bit/s• 1 200 bit/s• 2 400 bit/s• 4 800 bit/s• 9 600 bit/s• 19 200 bit/s
Parity: Selectable• Odd• Even• NoneCable
3-wire, with screening

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Tankside Monitor NRF81

The screening must be connected inside the housing
Termination resistors
To be set as required in specific environments
Topology
Serial bus
Transmission distance
Maximum 1 200 m (3 900 ft)
Instrument address
Each transmitter has an individual bus address configured in the software of the transmitter
Isolation
Bus inputs are electrically isolated from the other electronics
Error on alarm
Error message classified according to NAMUR NE 107"V1": Technical data
Number of units
Maximum 10 instruments per loop
Baud rate: Selectable
3 300 bit/s
Cable• 2-wire twisted pair, screening recommended• 2-wire, unscreened
Termination resistors
Not required
Topology• Serial bus• Tree structure
Transmission distance
Maximum 6 000 m (19 700 ft)
Instrument address
Each transmitter has an individual bus address configured in the software of the transmitter
Isolation
Serial communication circuit isolated from other circuits
Error on alarm
Error message classified according to NAMUR NE 107

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Tankside Monitor NRF81

WM550: Technical data
Number of units
Maximum 15 1) instruments per loop
Baud rate: Selectable• 600 bit/s• 1 200 bit/s• 2 400 bit/s• 4 800 bit/s
Cable• 2-wire twisted pair, unscreened (recommended)• 2-wire, screened or unscreened
Topology
Current loop or 2 redundant current loops (requires 2 I/O modules WM550)
Transmission distance
Maximum 7 000 m (22 967 ft)
Instrument address
Each transmitter has an individual bus address configured in the software of the transmitter
Isolation
Serial communication circuit isolated from other circuits
Error on alarm
Error message classified according to NAMUR NE 107

1)

The maximum number of devices depends on the maximum output voltage of the master and the voltage drop of slaves. For NXA820 with Nxx8x
devices, a maximum number of 12 devices is guaranteed

12Endress+Hauser

Tankside Monitor NRF81"4-20mA HART" I/O module (Ex d/XP or Ex i/IS): Technical data
General data
Number of units
Maximum 6 instruments per loop
Baud rate: Selectable
1 200 bit/s
Cable• 2-wire twisted pair, screened• Core cross section: 0.2 to 2.5 mm2 (24 to 13 AWG)
Topology• Serial bus• Tree structure
Transmission distance
Maximum 1 200 m (3 900 ft)
Instrument address
Each transmitter on a signal loop has an individual bus address. This is defined within thetransmitter software and / or auxiliary configuration environment such as host system or Field
Communicator 475.
Isolation
Bus inputs are electrically isolated from the other electronics
Input data
Input operating modes• 4..20mA input (1 external device)• HART master+4..20mA input (1 external device)• HART master (up to 6 external devices)
Internal load (to ground)400 Ω
Measuring range
0 to 26 mA
Accuracy±15 µA (after linearization and calibration)
Connection of a Prothermo NMT
The measured level is transmitted to the Prothermo. Prothermo uses this level to calculate theaverage temperature of the product.
Connection of a Micropilot S FMR5xx• The auxiliary energy for the Micropilot S can be supplied by the analogue I/O module• The calculated distance correction factor or distance correction value is sent to the Micropilot.
Micropilot uses this value to indicate the corrected level at its local display.
Connection of a RTD temperature probe
2-, 3- or 4-wire connection
Output data
Output operating modes• 4..20mA output• HART slave +4..20mA output
Output current
3 to 24 mA
Accuracy±15 µA (after linearization and calibration)
Error on alarm
HART error message classified according to NAMUR NE 107
Data for passive usage (input or output)• Minimum terminal voltage
10.4 V 2)• Maximum terminal voltage
29 V 2)2)

Observing these values is mandatory in order to ensure correct measured value information.

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Tankside Monitor NRF81

E
D

1 2 3 4C

1 2 3 4 5 6 7 8

2
1

CDI
1
2

E
1

CDI

i

F 12

3
4

C

1 2 3 4 5 6 7 8B

1 2 3 4 5 6 7 8iB

1 2 3 4 5 6 7 8A

1 2 3 4

1

G2

F 12

HR
on

3

WP
SIM

POWER

3
4

1

G2
G

HR
on

3

+

!
A0033030

4

Passive input or output: Use terminals 1 and 2

Data for active usage (input or output)• Transmitter power supply voltage(Ex d/XP)
18.5 V - 360 Ω ⋅ Iload• Transmitter power supply voltage(Ex i/IS)
20.0 V - 360 Ω ⋅ Iload• Output loadmax. 500 Ω including signal line 3)

E
CDI
D

1 2 3 4C

1 2 3 4 5 6 7 8

2
1

1
2

E
1

CDI

i

F 12

3
4

C

1 2 3 4 5 6 7 8B

1 2 3 4 5 6 7 8iB

1 2 3 4 5 6 7 8A

1 2 3 4

1

G2

F 12

HR
on

3
POWER

WP
SIM

3
4

1

G2
G
3

HR
on

-

+

A0033031

5

3)

14

Active input or output: Use terminals 2 and 3

Observing this value is mandatory in order to ensure correct measured value information.

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Tankside Monitor NRF81"Digital I/O module": Technical data
Output• Relay switching power for resistive load
• 30 VDC @ 2 A• 250 VDC @ 0.1 A• 250 VAC @ 2 A• Relay type• normally open;• can be set to "normally closed" by a software option 4)
Input• Maximum pick-up voltage• 250 VAC
• 250 VDC
• Minimum pick-up voltage• 25 VAC• 5 VDC• Current consumption at maximum voltage• ≤ 1 mA (DC)• ≤ 2 mA (AC)4)

In case of a power supply failure, the switching state is always "open", irrespective of the selected software option.

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Tankside Monitor NRF81

Power supply
Terminal assignment
D

1 2 3 4C

1 2 3 4 5 6 7 8B

1 2 3 4 5 6 7 8A

1 2 3 41D

1 2 3 4C

1 2 3 4 5 6 7 8B

1 2 3 4 5 6 7 8A

1 2 3 4

1
2

E

1
2

E
CDI

i

F 21

3
4

HR
on

3
POWER

WP
SIM

1

CDI

1

G2

i

F 12

3
4

1

G2

HR
on

3
POWER

WP
SIM
G1 N AC 85...264 V
G3 L

A0027362

6

Terminal compartment (typical example) and ground terminals

Housing thread
The threads of the electronics and connection compartment can be coated with an anti-friction
coating.
The following applies for all housing materials:
Do not lubricate the housing threads.
Terminal area A/B/C/D (slots for I/O modules)
Module: Up to four I/O modules, depending on the order code
• Modules with four terminals can be in any of these slots.
• Modules with eight terminals can be in slot B or C.
The exact assignment of the modules to the slots is dependent on the device version. For adetailed description refer to the Operating Instructions of the device in question.
Terminal area E
Module: HART Ex i/IS interface• E1: H+• E2: HTerminal area F
Remote display• F1: VCC (connect to terminal 81 of the remote display)• F2: Signal B (connect to terminal 84 of the remote display)• F3: Signal A (connect to terminal 83 of the remote display)• F4: Gnd (connect to terminal 82 of the remote display)
Terminal area G (for High voltage AC power supply and Low voltage AC power supply)• G1: N
• G2: not connected• G3: L
Terminal area G (for Low voltage DC power supply)• G1: L• G2: not connected• G3: L+
Terminal area: Protective ground
Module: Protective ground connection (M4 screw)

A0018339

7

16

Terminal area: Protective ground

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Tankside Monitor NRF81

Gnd

Vcc

Remote display and operating module DKX001

A

B

81 82 83 84

F 12

1

3
4

2
F1 F2 F3 F4D

1 2 3 4

1
2

E
1

CDI

C

1 2 3 4 5 6 7 8

i

F 21

B

1 2 3 4 5 6 7 8A

1 2 3 4

1

G2

HR
on

B

A

Gnd

3

Vcc

3

3
4

POWER

WP
SIM

A00370258123Connection of the remote display and operating module DKX001 to the Tank Gauging device (NMR8x,
NMS8x or NRF8x)
Remote display and operating module
Connecting cable
Tank Gauging device (NMR8x, NMS8x or NRF8x)

The remote display and operating module DKX001 is available as an accessory. For details refer
to SD01763D.
• The measured value is indicated on the DKX001 and on the local display and operating
module simultaneously.
• The operating menu cannot be accessed on both modules at the same time. If the operating
menu is entered in one of these modules, the other module is automatically locked. This
locking remains active until the menu is closed in the first module (back to measured value
display).
Supply voltage

High voltage AC power supply:
Operational value:
100 to 240 VAC (- 15 % + 10 %) = 85 to 264 VAC , 50/60 Hz
Low voltage AC power supply:
Operational value:
65 VAC (- 20 % + 15 %) = 52 to 75 VAC , 50/60 Hz
Low voltage DC power supply:
Operational value:
24 to 55 VDC (- 20 % + 15 %) = 19 to 64 VDC

Power consumption

Maximum power varies depending on the configuration of the modules. The value shows maximum
apparent power, select the applicable cables accordingly. The actual consumed effective power is
12 W.
High voltage AC power supply:
28.8 VA
Low voltage AC power supply:
21.6 VA
Low voltage DC power supply:
13.4 W

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Tankside Monitor NRF81

Cable entries

Ordering feature 090 "Electrical Connection" 1)

Cable entries (with blind plugs) 2)A

7 x thread M20

B

7 x thread M25

C

7 x thread G1/2

D

7 x thread G3/4

E

7 x thread NPT1/2

F

7 x thread NPT3/4

1)
2)

Position 090 of the order code, e.g. NMx8x-xxxxxxxxxxxxxA...
The entries NOT having I/O modules inside will be directly assembled with 316L blind plugs without
adapters. For details of module positions, refer to the chapter for "Slots for I/O modules" in Operating
Instructions.

For the following devices with JPN Ex approval, cable glands are attached to the device (seeposition 010 of the order code). These cable glands must be used.
Tankside Monitor NRF81-TA...
Cable specification

Terminals
Wire cross section 0.2 to 2.5 mm2 (24 to 13 AWG)
Use for terminals with function: Signal and power supply• Spring terminals (NRF81-xx1...)• Screw terminals (NRF81-xx2...)
Wire cross section max. 2.5 mm2 (13 AWG)
Use for terminals with function: Ground terminal in the terminal compartment
Wire cross section max. 4 mm2 (11 AWG)
Use for terminals with function: Ground terminal at the housing
Power supply line
Standard device cable is sufficient for the power line.
HART communication line
• Standard device cable is sufficient if only the analog signal is used.
• Shielded cable is recommended if using the HART protocol. Observe the grounding concept of theplant.
Modbus communication line
• Observe the cable conditions from the TIA-485-A, Telecommunications Industry Association.
• Additional conditions: Use shielded cable.
V1 communication line
• 2-wire twisted pair, screened or unscreened cable• Resistance in one cable: ≤ 120 Ω• Capacitance between lines: ≤ 0.3 µF
WM550 communication line
• 2-wire twisted pair, unscreened cable• Cross section minimum 0.5 mm2 (20 AWG)
• Maximum total cable resistance: ≤ 250 Ω• Cable with low capacitance

Overvoltage protection

On the communication and power lines; according to IEC 60060-1 /DIN 60079-14:
10 kA, 8/20 μs, 10 pulses according to IEC 60060-1 / DIN 60079-14

Overvoltage category

Overvoltage category II

Pollution degree

Pollution degree 2

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Tankside Monitor NRF81

Installation
Installation conditions

Wall mounting

150 (5.9)

ø13.5 (0.53)
M12≤15 Nm (11.06 lbf ")150 (5.9)
A0029901

9Wall mounting of the Tankside Monitor

Pipe mounting
A mounting kit consisting of two brackets and four nuts can be ordered with the device. It can beused for mounting the Tankside Monitor on horizontal or vertical pipes.
Ordering feature 620 "Accessory enclosed"• PV
Mounting kit, pipe, DN32-50 (1-1/4" - 2")• PW
Mounting kit, pipe, DN80 (3")≤15 Nm (11.06 lbf ")A0029899 10Endress+Hauser

Mounting of the Tankside Monitor at a vertical pipe

19

Tankside Monitor NRF81≤15 Nm (11.06 lbf ")A0029900

 11

20

Mounting of the Tankside Monitor at a horizontal pipe

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Tankside Monitor NRF81

Environment
Ambient temperature range

Device–40 to +60 °C (–40 to +140 °F)

Display module –20 to +70 °C (–4 to +158 °F)
readability of the display may be impaired at temperatures outside this The
temperature range.

Classification ofenvironmental conditions
according to DIN EN
60721-3-4

4K5, 4K6, 4B1, 4M7, 4Z2, 4Z3, 4Z8

Storage temperature–50 to +80 °C (–58 to +176 °F)

Humidity≤ 95 %

Degree of protection• IP66/68 according to DIN EN 60529• Type 6P/4X according to NEMA 250

Shock resistance• 30 g (18 ms) according to DIN EN 60068-2-27 (1993)• Classification according to DIN EN 60721-3-4: 4M7

Vibration resistance• 20 to 2 000 Hz, 1 (m/s2)2/Hz according to DIN EN 60068-2-64 (1994)• This corresponds to an acceleration value of 4.5 g and fulfills class 4M7 of DIN EN 60721-3-4(1995)

Electromagnetic
compatibility (EMC)• Transient emissions according to DIN EN 61326, class B• Interference resistance according to DIN EN 61326, Appendix A (Industry use) and NAMUR
recommendation NE21

Maximum use altitude

2 000 m (6 561.68 ft) above sea level

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Tankside Monitor NRF81

Custody transfer approval
Options of ordering feature 590 "Additional Approval"• LK
NMi witnessed initial verification accuracy, Weight + Measure approval• LL
PTB witnessed initial verification accuracy, Weight + Measure approval• LN
LNE witnessed initial verification accuracy, Weight + Measure approval• LO*NMi type approval• LP*PTB type approval• LQ*LNE type approval• LT
METAS, custody transfer• LU
BEV, custody transfer

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Tankside Monitor NRF81

Mechanical construction
Dimensions

Housing

215 (8.46)

310 (12.2)

A0023874 12

Dimensions of Tankside Monitor NRF81; unit of measurement: mm(in); adapters for cable entries are nottaken into account in this drawing.

WeightHousing with electronics: approx. 12 kg (26 lb)

Materials

Materials of housing
8
1

7

2

6

9

10

3
4

5

A0026339

1
2
3
4
5
6
7
8
9
10

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Housing
Cover
Cover lockTag for measuring point label
Pressure release stopper
Nameplate
Mounting plate
Dummy screws for weather protection cover
Dummy plug, cable gland or adapter. Depending on device version
Ground terminal

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Tankside Monitor NRF81

1 Housing• Aluminum housing type, RAL 5012 (blue):• Housing: AC 43000 T6; AlSi10Mg ( < 0,1 % Cu)• Coating: Polyester• Stainless steel housing type: 316L (1.4404)
2 Cover• Aluminum RAL 7035 (grey): AC 43000 T6; AlSi10Mg ( < 0,1 % Cu)• Stainless steel 316L (1.4404)• Window: Glass• Seal: FVMQ
• Thread-coating: Graphite-based lubricant varnish
3 Cover lock
• Capstan screw: 316L (1.4404)• Clamp: 316L (1.4435)
4 Tag for measuring point label
316L (1.4404)
5 Pressure release stopper
316L (1.4404)
6 Nameplate• Aluminum housing type:
Sticker: Plastic• Stainless steel housing type:• Nameplate: 316L (1.4404)• Groove pins: 316Ti (1.4571)• Sealing screw: A4• O-ring: FKM
7 Mounting plate• Aluminum housing type: AC 43000 T6• Stainless steel housing type: 316L (1.4404)
8 Dummy screws for weather protection cover• Screw: A4-70• O-ring: EPDM
9 Dummy plug, cable gland or adapter 5)• Dummy plug
• 1.4435• LD-PE• Adapter:• Ms/Ni (TIIS)• 1.4404 (other versions)• Seal:• EPDM• NBR• PTFE tape
10 Ground terminal• Screw: A4-70• Spring washer: A4• Clamp and holder: 316L (1.4404)

5)24

Depending on device version

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Tankside Monitor NRF81

Operability
Operating concept

Operator-oriented menu structure for user-specific tasks• Commissioning• Operation• Diagnostics• Expert level
Operating languages• English• Chinese• German• Japanese• SpanishFeature 500 of the product structure determines which of these languages is preset on delivery.
Quick and safe commissioning• Guided menus ("Make-it-run" wizards) for applications• Menu guidance with brief explanations of the individual parameter functions
Reliable operation
Standardized operation at the device and in the operating tools
Efficient diagnostics increase measurement reliability• Remedy information is integrated in plain text
• Diverse simulation options

Operating options• Local display; operation via the local display is possible without opening the device.
• Tank Gauging system• Plant Asset Management tool (e.g. FieldCare); connected via• HART• Service port (CDI)

Local operation

1

A0025574

 13
1

Local operation of the Tankside Monitor NRF81

Display and operating module

Display elements• 4-line display• White background lighting; switches to red in event of device errors• Format for displaying measured variables and status variables can be individually configured• Permitted ambient temperature for the display: –20 to +70 °C (–4 to +158 °F)
The readability of the display may be impaired at temperatures outside the temperature range.
Operating elements• External operation via touch control; 3 optical keys: , ,• Operating elements also accessible in various hazardous areas
E

Remote display and operating module DKX001
The display and operating elements correspond to those of the display module.
Depending on the installation location, the remote display module DKX001 provides better access tothe operating elements than the display on the device.

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Tankside Monitor NRF81

A0042197

 14

Operation via remote display and operating module DKX001

The remote display and operating module DKX001 is available as an accessory. For details refer
to SD01763D.
• The measured value is indicated on the DKX001 and on the local display and operating
module simultaneously.
• The operating menu cannot be accessed on both modules at the same time. If the operating
menu is entered in one of these modules, the other module is automatically locked. This
locking remains active until the menu is closed in the first module (back to measured value
display).
The housing material of the display and operating module DKX001 can be selected in the order code.
There are 2 options : alu and stainless steel.
Remote operation

7

5
6

4

1

2

3

A0025621

 15
1
2
3
4
5
6
7

26

Remote operation of Tank Gauging devices

Proservo NMS8x
Tankside Monitor NRF81
Micropilot NMR8x
Field protocol (e.g. Modbus, V1)
Tankvision Tank Scanner NXA820
Ethernet
Computer with operating tool (e.g. FieldCare)

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Tankside Monitor NRF81

Operation via service
interface
1

CD

I

3

2
A0025572

 16
1
2
3

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Operation via service interface

Service interface (CDI = Endress+Hauser Common Data Interface)Commubox FXA291
Computer with "FieldCare" operating tool and "CDI Communication FXA291" COM DTM

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Tankside Monitor NRF81

Certificates and approvals
Current certificates and approvals for the product are available at www.endress.com on the relevant
product page:CE mark

1.

Select the product using the filters and search field.

2.

Open the product page.

3.

Select Downloads.

The measuring system meets the legal requirements of the applicable EU guidelines. These are listed
in the corresponding EU Declaration of Conformity together with the standards applied.
Endress+Hauser confirms successful testing of the device by affixing to it the CE mark.

RCM marking

The supplied product or measuring system meets the ACMA (Australian Communications and Media
Authority) requirements for network integrity, interoperability, performance characteristics as wellas health and safety regulations. Here, especially the regulatory arrangements for electromagnetic
compatibility are met. The products bear the RCM marking on the nameplate.

A0029561

Ex approval

Certificates are available online for the following approval types.
• AEx• ATEX• FM C/US• EAC Ex
• IEC Ex• JPN Ex• KC Ex 6)
Currently available certificates and approvals can be called up via the product configurator.
Additional safety instructions must be followed for use in hazardous areas. Please refer to theseparate "Safety Instructions" (XA) document included in the delivery. Reference to the applicable XA
can be found on the nameplate.

Single seal according to
ANSI/ISA 12.27.01

The devices have been designed according to ANSI/ISA 12.27.01 as single seal devices, allowing theuser to waive the use and save the cost of installing external secondary process seals in the conduit
as required by the process sealing sections of ANSI/NFPA 70 (NEC) and CSA 22.1 (CEC) These
instruments comply with the North-American installation practice and provide a very safe and costsaving installation for pressurized applications with hazardous fluids.
Further information can be found in the Safety Instructions (XA) of the relevant devices.

Functional Safety (SIL)

Use for level monitoring (MIN, MAX, range) up to SIL 2/3 according to IEC 61508:2010.
For details refer to the "Functional Safety Manual":SD01929G (NRF81)

WHG

6)

28

DIBt: Z-65.16-588

KC approval is covered with IEC Ex approval.

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Tankside Monitor NRF81

Weight & Measure approval• OIML R85 (2008)
• NMi
• PTB
• PAC
• WELMEC
The device has a sealable locking switch according to the Weight & Measure requirements. This
switch locks all software parameters related to the measurement. The switching status isindicated on the display and via the communication protocol.

Non-ionizing radiation
protection

According to guideline 2004/40/EG-ICNIRP Guidelines EN50371

Test, certificate

Ordering feature 580 "Test,
Certificate"

Designation

JA

3.1 Material certificate, wetted metallic parts, EN10204-3.1 inspection
certificate

KE

Pressure test, internal procedure, inspection certificate

KS

Welding documentation, wetted/pressurized seams

Other standards andguidelines

Industry standards• Directive 2011/65/EU: "Restriction of Hazardous Substances" (RoHS)• Directive 2014/32/EC: "Measuring Instruments Directive" (MID)• IEC61508: "Functional Safety of Electrical/Electronic/Programmable Electronic Safety-related
Systems" (SIL)• NACE MR 0175, NACE MR 0103: "Sulfide stress cracking resistant metallic materials for oilfieldequipment"• API Recommended Practice 2350: "Overfill Protection for Storage Tanks in Petroleum Facilities"• API MPMS: "Manual of Petroleum Measurement Standards"• EN 1127: "Explosive atmospheres - Explosion prevention and protection"• IEC 60079: "Equipment protection"• EN 1092: "Flanges and their joints"• EN 13463: "Non-electrical equipment for use in potentially explosive atmospheres"• TIA-485-A: "Electrical Characteristics of Generators and Receivers for Use in Balanced Digital
Multipoint Systems "• IEC61511: "Functional safety - Safety instrumented systems for the process industry sector"• IEEE 754: "Standard for Binary Floating-Point Arithmetic for microprocessor systems "• ISO4266: "Petroleum and liquid petroleum products - measurement of level and temperature instorage tanks by automatic methods"• ISO6578: "Refrigerated hydrocarbon liquids - Static measurement - Calculation procedure"• ISO 11223: "Petroleum and liquid petroleum products - Determination of volume, density andmass of the contents of vertical cylindrical tanks by Hybrid Tank Measurement Systems"• ISO15169: "Petroleum and liquid petroleum products - Direct static measurement - Measurementof content of vertical storage tanks by hydrostatic tank gauging"• JIS K2250: "Petroleum Measurement Tables"• JIS B 8273: "Bolted flange for pressure vessels"• G.I.I.G.N.L.: "LNG Custody transfer handbook"• NAMUR NE043: "Standardization of the Signal Level for the Failure Information of Digital
Transmitters"• NAMUR NE107: "Self-Monitoring and Diagnosis of Field Devices"
Metrological standards• OIML R85 (2008) "Requirements for ambient temperature low –25 °C (–13 °F) and ambient
temperature high +55 °C (+131 °F)• "Mess- und Eichverordnung" (Calibration regulations for the Federal Republic of Germany)• Directive 2014/32/EC of the European Parliament and of the Council of 26 February 2014 on
measuring instruments• PTB-A-5.01: "Automatic level measuring devices for stationary storage containers"

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Tankside Monitor NRF81

Ordering information
Ordering information

Detailed ordering information is available from your nearest sales organizationwww.addresses.endress.com or in the Product Configurator at www.endress.com:
1.

Select the product using the filters and search field.

2.

Open the product page.

3.

Select Configuration.
Product Configurator - the tool for individual product configuration• Up-to-the-minute configuration data
• Depending on the device: Direct input of measuring point-specific information such asmeasuring range or operating language• Automatic verification of exclusion criteria• Automatic creation of the order code and its breakdown in PDF or Excel output format• Ability to order directly in the Endress+Hauser Online Shop

Marking

Option of ordering feature 895"Marking"

Meaning

Z1

Tagging (TAG)

Z2

Bus address

Optionally, the device can be ordered with a specific tagging and/or bus address according to thetable above. When the respective option is selected, the tag or bus address must be defined in an
additional specification.

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Tankside Monitor NRF81

Application packages
Advanced tank measurement
methods

The device software provides the following tank measurement methods:• Direct level measurement →  31
• Hybrid tank measurement system (HTMS) →  32
• Hydrostatic tank gauging (HTG) →  33
• Hydrostatic tank shell correction (HyTD) →  35
• Thermal tank shell correction (CTSh) →  35
Direct level measurement
If no advanced tank measurement methods have been selected, level and temperature are measured
directly.

Direct level measurement modes
Installation example

Measuring mode
Level only

Measured variables

1

2

Calculated
variables

Level

None

• Level• Temperature (spot oraverage)None

3

A0023756

1
2
3
Level + temperature 4

Level transmitter (e.g. typically FMR540, FMR51,.. but not NMR8x or NMS8x)
Tankside Monitor
To inventory management system

1

2

3

A0023757

1
2
3
4

Endress+Hauser

Level transmitter (e.g. typically FMR540, FMR51,.. but not NMR8x or NMS8x)
Tankside Monitor
To inventory management system
Temperature (spot or average)

31

Tankside Monitor NRF81

Hybrid tank measurement system (HTMS)HTMS uses level and pressure measurements to calculate the contents of the tank and (optionally)
the density of the medium.
HTMS measuring modes
Installation example

Measuring mode
HTMS + P1

1This mode should be used in
atmospheric (i.e. nonpressurized) tanks

D1

2

Measuredvariables

Calculated
variables• Level• Bottom pressure(at position D1)

Density of themedium• Level• Bottom pressure(at position D1)• Top pressure (atposition D3)

Density of themedium3

4

A0023758

1
2
3
4
HTMS + P1 + P3

Level transmitter (e.g. typically FMR540, FMR51,.. but not NMR8x
or NMS8x)
Tankside Monitor
To inventory management system
Pressure transmitter (bottom)

5

1

mode should be used in Thisnon- atmospheric (i.e.
pressurized) tanks

3

D3

2

4
A0023759

1
2
3
4
5

32

Level transmitter (e.g. typically FMR540, FMR51,.. but not NMR8x
or NMS8x)
Tankside Monitor
To inventory management system
Pressure transmitter (bottom)
Pressure transmitter (top)Endress+Hauser

Tankside Monitor NRF81

Hydrostatic tank gauging (HTG)
HTG uses one, two or three pressure measurements at different positions to calculate the tankcontents and (optionally) the density of the medium.
HTG measuring modes
Measuring mode

Installation example

Measured variables

HTG P1

Bottom pressure (at position D1)

This mode should be used in
atmospheric (i.e. non-pressurized)
tanks

D1

1

2

Calculated
variables
Level

The density of the medium must
be entered manually.

3

A0023760

1
2
3
HTG P1 + P3

Tankside Monitor
To inventory management system
Pressure transmitter (bottom)• Bottom pressure (at position D1)• Top pressure (at position D3)

4This mode should be used in nonatmospehric (i.e. pressurized) tanks

Leveldensity of the medium must The
be entered manually.

1

D1

D3

2

3

A0023761

12
3
4Endress+Hauser

Tankside Monitor
To inventory management system
Pressure transmitter (bottom)
Pressure transmitter (top)33

Tankside Monitor NRF81

Measuring mode

Installation example

Measured variables

HTG P1 + P2

D1-2

2

• Bottom pressure (at position D1)• Middle pressure (at position D2)• Level• Density of themedium• Bottom pressure (at position D1)• Middle pressure (at position D2)• Top pressure (at position D3)• Level• Density of themedium

3

D1



1

This mode should be used in
atmospheric (i.e. non-pressurized)tanks

Calculated
variables

4

A0023762

12
3
4
HTG P1 + P2 + P3

5This mode should be used in nonatmospehric (i.e. pressurized) tanks

D1-2

1

2

3

D1

D3



Tankside Monitor
To inventory management system
Pressure transmitter (middle)
Pressure transmitter (bottom)

4

A0023763

1
2
3
4
5

34

Tankside Monitor
To inventory management system
Pressure transmitter (middle)
Pressure transmitter (bottom)
Pressure transmitter (top)Endress+Hauser

Tankside Monitor NRF81

Hydrostatic tank shell correction (HyTD)Δx

The hydrostatic tank shell correction can be used to compensate for vertical movement of the Gauge
Reference Height due to bulging of the tank shell caused by the hydrostatic pressure exerted by theliquid stored in the tank. The compensation is based on a linear approximation obtained frommanual hand dips at several levels distributed over the full range of the tank.

A0023774

 17

Movement Δx of the Gauge Reference Height due to the bulging of the tank shell caused by hydrostaticpressure

Thermal tank shell correction (CTSh)
The thermal tank shell correction can be used to compensate for vertical movement of the Gauge
Reference Height due to temperature effects on the tank shell or stilling well. The calculation isbased on the thermal expansion coefficients of steel and on insulation factors for both the dry andwetted part of the tank shell.
• This correction is recommended for any tank gauge operating at conditions deviating
considerably from the conditions during calibration and for extremely high tanks. For
refrigerated, cryogenic and heated applications this correction is highly recommended.
• Wire length can also be corrected with the parameters related to CTSh.
Level reference check (LRC)
For tanks where a manual dipping cannot be performed the level gauge can be verified by means of
the LRC function.
If the measured level value is not verified by the LRC function applied, the device will issue an error
message regarding the measured level.
This reference check is recommended for liquefied gas applications.
LRC with reference level
The radar device compares it's own level reading with the level reading of another level gauge (e.g.
Proservo NMS8x). Based on a configurable deviation value (Allowed difference parameter), a
continuous check is performed.

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Tankside Monitor NRF81

5
6

4

3

a

7

1

a

8
2

9

A0053872

 18
1
2
3
4
5
6
7
8
9

Application example with Proservo NMS8x

Lower limit of deviation value "a" as configured in radar level gauge
Reference value: Measured level as provided by level gauge Proservo NMS8x
Upper limit of deviation
Proservo NMS8x provides the reference value
Level gauges are interconnected via HART interface
Radar level gauge with configured deviation value "a" for "Allowed difference" parameter
The measured level is greater than reference value plus deviation value "a": Level value is not verified
The measured level is within or equal to the limits defined by the deviation value "a": Level value is verified
The measured level is less than reference value minus deviation value "a": Level value is not verified

Properties• Frequency: The reference check is performed continuously every 60 seconds.
• Tolerance: Via the Check fail threshold parameter, a configurable number of failures is allowed
before the status switches to failed.
• Connection: The level reference device is connected via an optional HART I/O board.
See ordering feature 050: "Secondary I/O Analogue".
LRC with point reference
Mechanical parts in the tank can be used as reference points to perform a reference measurement.
The reference distance can be saved to the device. Based on a configurable deviation value (Allowed
difference parameter), a manual check can be started.
A closed cut off ball valve or a fixed reference ring at the end of a stilling well are examples forsuitable reference measurement installations.

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4

3

a

5

a

6
2
1

7
A0053871

 19
1
2
3
4
5
6
7

Application example with fixed reference point at the end of the stilling well

Lower limit of deviation value "a" as configured in radar level gauge
Reference value: Distance from radar level gauge to object fixed to stilling well
Upper limit of deviation
Radar level gauge with configured deviation value "a" for "Allowed difference" parameter
The measured level is greater than reference value plus deviation value "a": Level value is not verified
The measured level is within or equal to the limits defined by the deviation value "a": Level value is verified
The measured level is less than reference value minus deviation value "a": Level value is not verified

LRC with reference switch
A level switch (e.g. Liquiphant FTLx) can be mounted within the tank. The check can be performed
continuously, each time the level switch is activated or deactivated. The measured level should
remain within a configurable deviation.

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Tankside Monitor NRF81

5

4

3

a

6

1

a

7
2

8

A0053873

 20
1
2
3
4
5
6
7
8

Application example with level switch

Lower limit of deviation value "a" as configured in radar level gauge
Reference value: The switching point of an installed level switch represents the reference value for verification
Upper limit of deviation
Level switch and level gauge are interconnected via a digital I/O board
Radar level gauge with configured deviation value "a" for "Allowed difference" parameter
The measured level is greater than reference value plus deviation value "a": Level value is not verified
The measured level is within or equal to the limits defined by the deviation value "a": Level value is verified
The measured level is less than reference value minus deviation value "a": Level value is not verified

Properties• Modes: The device can be set to monitor the switching point while filling or draining the tank.
• Connection: The level switch is connected via a digital I/O board.
See ordering feature 060: "Secondary I/O Digital Ex d/XP".
Gas phase correction for liquefied gases (CLG)
The gas phase in pressurized tanks has a direct impact on the distance determination for time-offlight sensors. This feature corrects the influences of the vapor phase based on its pressure,temperature and composition.

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3
2

4
1

5

A0053921

1
2
3
4
5

Prothermo temperature measurement device, equipped with thermowell or protective pipe
HART connection
Radar level gauge Micropilot NMR84
HART connection
Digital pressure transmitter

The vapor pressure and temperature measurement devices need to be connected via an optional
HART I/O board.
Vapor phase composition
The vapor phase composition is entered manually via the display or an asset management software(e.g. DeviceCare).
The correction function can be set to the following values:• Off• Pure gas option: 1 main gas component• Mix of two gases option: 2 main components with defined share• Mix of three gases option: 3 main components with defined share• Mix of four gases option: 4 main components with defined share
The share is entered in percent (i. e. mixture of 2 gases with 25 and 75 percent) or in amounts(i. e. mixture of 2 gases with 1 amount and 3 amounts), no unit required.
The gas components can either be selected from a predefined list or defined by the user to use a
different gas component. In that case the refractive index for the component has to be entered.

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Accessories
Device-specific accessories

Weather protection cover

56.1 (2.21)

32.5 (1.28)

319 (12.6)

361.6 (14.2)

A0028479

 21

Weather protection cover; dimensions: mm (in)Materials• Protection cover and mounting brackets
Material
316L (1.4404)• Screws and washers
Material
A4• The weather protection cover can be ordered together with the device:
Ordering feature 620 "Accessory Enclosed", option PA "Weather Protection Cover")• It can also be ordered as an accessory:
Order code: 71292751 (for NMR8x and NRF8x)

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Communication-specificaccessories

WirelessHART adapter SWA70• Is used for the wireless connection of field devices• The WirelessHART adapter can be easily integrated into field devices and existing infrastructures,
offers data protection and transmission safety and can be operated in parallel with other wirelessnetworks
For details, see Operating Instructions BA00061S
Gauge Emulator, Modbus to BPM• Using the protocol converter, it is possible to integrate a field device into a host system even if the
field device does not know the communication protocol of the host system. Eliminates vendor lockin for field devices.
• Field communication protocol (field device): Modbus RS485• Host communication protocol (host system): Enraf BPM• 1 measuring device per Gauge Emulator• Separate power supply: 100 to 240 VAC, 50 to 60 Hz, 0.375 A, 15 W
• Several approvals for the hazardous area
Gauge Emulator, Modbus to TRL/2• Using the protocol converter, it is possible to integrate a field device into a host system even if the
field device does not know the communication protocol of the host system. Eliminates vendor lockin for field devices.
• Field communication protocol (field device): Modbus RS485• Host communication protocol (host system): Saab TRL/2• 1 measuring device per Gauge Emulator• Separate power supply: 100 to 240 VAC, 50 to 60 Hz, 0.375 A, 15 W
• Several approvals for the hazardous area

Service-specific accessories

Commubox FXA195 HART
For intrinsically safe HART communication with FieldCare via the USB interface
For details, see "Technical Information" TI00404F
Commubox FXA291
Connects Endress+Hauser field devices with a CDI interface (= Endress+Hauser Common Data
Interface) and the USB port of a computer or laptop
Order number: 51516983
For details, see "Technical Information" TI00405C
DeviceCare SFE100
Configuration tool for HART, PROFIBUS and FOUNDATION Fieldbus field devices
DeviceCare is available for download at www.software-products.endress.com. You need to register inthe Endress+Hauser software portal to download the application.
Technical Information TI01134S
FieldCare SFE500
FDT-based plant asset management tool
It can configure all smart field units in your system and helps you manage them. By using the status
information, it is also a simple but effective way of checking their status and condition.
Technical Information TI00028S

System components

RIA15
Compact process display unit with very low voltage drop for universal use to display 4 to 20 mA/
HART signals
Technical Information TI01043K
Tankvision Tank Scanner NXA820 / Tankvision Data Concentrator NXA821 / Tankvision Host
Link NXA822
Inventory Management System with completely integrated software for operation via standard webbrowser
Technical Information TI00419G

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Documentation
The following documentation types are available in the Downloads area of the Endress+Hauser
website (www.endress.com/downloads):
For an overview of the scope of the associated Technical Documentation, refer to the following:• Device Viewer (www.endress.com/deviceviewer): Enter the serial number from thenameplate• Endress+Hauser Operations app: Enter serial number from nameplate or scan matrix code on
nameplate.
Technical Information (TI)

Planning aid
The document contains all the technical data on the device and provides an overview of theaccessories and other products that can be ordered for the device.

Brief Operating Instructions(KA)

Guide that takes you quickly to the 1st measured value
The Brief Operating Instructions contain all the essential information from incoming acceptance toinitial commissioning.

Operating Instructions (BA)The Operating Instructions contain all the information that is required in 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.
It also contains a detailed explanation of each individual parameter in the operating menu (except
the Expert menu). The description is aimed at those who work with the device over the entire life
cycle and perform specific configurations.

Description of Device
Parameters (GP)The Description of Device Parameters provides a detailed explanation of each individual parameter inthe 2nd part of the operating menu: the Expert menu. It contains all the device parameters andallows direct access to the parameters by entering a specific code. The description is aimed at those
who work with the device over the entire life cycle and perform specific configurations.

Safety Instructions (XA)

Depending on the approval, the following Safety Instructions (XA) are supplied with the device. They
are an integral part of the Operating Instructions.
The nameplate indicates the Safety Instructions (XA) that are relevant to the device.

Installation instructions (EA)

Installation Instruction are used to replace a faulty unit with a functioning unit of the same type.

Registered trademarks
Modbus®
Registered trademark of SCHNEIDER AUTOMATION, INC.

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