Endress+Hauser NMS83 Specifications

TI01250G/00/EN/04.18
71411299
2018-07-13

Products

Solutions Services

Technical Information

Proservo NMS83

Tank Gauging

Application

Proservo NMS8x Series intelligent tank gauges are designed for high accuracy liquid
level measurement in storage and process applications. They fulfill the exacting
demands of tank inventory management, inventory control, custody transfer, loss
control, total cost saving, and safe operation.

Typical areas of application

• Precise level, interface, and density measurement of alcohols and beverages

• Tank mounted intelligence makes NMS8x ideal for single or multi-task
installation, covering a wide range of measurement functions including Liquid
level, Interface level, Spot density, Density profile, Tank bottom, and Water dip and
integrating a wide range of tank sensor measurement functions including Water
level, Temperature, and Pressure.

Your benefits

• SIL2 certified (Min, Max, Continuous level)

• SIL3 (in preparation)

• Measures liquid level to an accuracy of +/- 0.4 mm (0.016 in)

• Measurement of up to two interface levels and density of up to three liquid phases

• Liquid density profiling of up to 50 points throughout the tank or upper layer,
configurable.

• Wetted parts are completely separated from the electronic circuit

• Tank top mounting with 3” flange

• Wide range of output signals including V1, Modbus RS 485, and HART protocol

• Material and pressure rating of the wetted parts can be selected.

• Suitable for atmospheric and high pressure applications up to 6 bar/600 kPa/
87 psi

• Integration of e.g. temperature, water level, pressure, overfill prevention sensor

• Direct connection of spot or average temperature sensor

• Robust IP66/68, NEMA Type 4x/6P enclosure

• Operation and display in a wide variety of local languages

• Easy commissioning, maintenance, and diagnostics via FieldCare

Table of contents

Proservo NMS83

Document information ....................... 3

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

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

Measuring principle ............................ 5

Integration of tank sensors ....................... 6

Measuring system ............................ 14

Input/output .............................. 15

Level measurement ........................... 15

HART Ex ia/IS active input ...................... 16

I/O modules ................................ 17

Power supply ............................. 23

Terminal assignment .......................... 23

Sources for gauge commands ..................... 23

Supply voltage .............................. 25

Cable entries ............................... 26

Cable specification ............................ 26

Overvoltage protection ......................... 26

Performance characteristics .................. 27

Reference operating conditions ................... 27

Measured value resolution ...................... 27

Maximum measured error ....................... 27

Hysteresis ................................. 27

Repeatability ............................... 28

Linearity .................................. 28

Long-term drift .............................. 28

Influence of ambient temperature ................. 28

Influence of medium temperature .................. 28

Influence of medium pressure .................... 28

Effect of gas phase ............................ 28

Installation ............................... 29

Requirements ............................... 29

Environment .............................. 35

Ambient temperature range ..................... 35

Classification of environmental conditions according to

DIN EN 60721-3-4 ........................... 35

Storage temperature .......................... 35

Humidity .................................. 35

Degree of protection .......................... 35

Electromagnetic compatibility (EMC) ............... 35

Mechanical construction .................... 39

Dimensions ................................ 39

Weight ................................... 39

Materials .................................. 40

Operability ............................... 41

Operating concept ............................ 41

Operating options ............................ 41

Local operation .............................. 41

Remote operation ............................ 42

Operation via service interface .................... 42

Certificates and approvals ................... 43

CE mark ................................... 43

RCM-Tick marking ............................ 43

Ex approval ................................ 43

Single seal according to ANSI/ISA 12.27.01 ........... 43

Functional Safety (SIL) ......................... 43

WHG ..................................... 43

Weight & Measure approval ..................... 43

Non-ionizing radiation protection .................. 43

Pressure Equipment Directive 2014/68/EU (DGRL / PED) .. 43

Test, certificate .............................. 44

Other standards and guidelines ................... 44

Ordering information ....................... 45

Ordering information .......................... 45

Marking .................................. 45

Shipping condition ............................ 45

Application packages ....................... 46

Advanced tank measurement methods .............. 46

Accessories ............................... 49

Device-specific accessories ...................... 49

Communication-specific accessories ................ 52

Service-specific accessories ...................... 52

System components ........................... 52

Documentation ............................ 53

Technical Information (TI) ...................... 53

Brief Operating Instructions (KA) .................. 53

Operating Instructions (BA) ..................... 53

Description of Device Parameters (GP) ............... 53

Safety instructions (XA) ........................ 54

Process .................................. 36

Process temperature range ...................... 36

Process pressure range ......................... 36

Medium density ............................. 36

Medium density difference for interface measurement .... 37

Viscosity .................................. 37

Registered trademarks ...................... 55

Custody transfer approval ................... 38

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Proservo NMS83

DANGER

WARNING

CAUTION

NOTICE

A

Document information

Symbols Safety symbols

Symbol Meaning

Electrical 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.

NOTE!

This symbol contains information on procedures and other facts which do not result in
personal injury.

Symbol Meaning

Direct current

Alternating current

Direct current and alternating current

Ground connection

A grounded terminal which, as far as the operator is concerned, is grounded via a
grounding system.

Protective ground connection

A terminal which must be connected to ground prior to establishing any other
connections.

Equipotential connection

A connection that has to be connected to the plant grounding system: This may be a
potential equalization line or a star grounding system depending on national or
company codes of practice.

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

Reference to page

Reference to graphic

Visual inspection

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Symbols in graphics

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-

.

Symbol Meaning

1, 2, 3 ... Item numbers

, 2., 3.… Series of steps

A, B, C, ... Views

A-A, B-B, C-C, ... Sections

Symbols at the device

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.

Proservo NMS83

Hazardous area

Indicates a hazardous area.

Safe area (non-hazardous area)

Indicates the non-hazardous area.

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CPU

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Function and system design

Measuring principle

NMS8x is an intelligent tank gauge for measuring liquid levels with high precision. The system is
based on the principle of gauging displacement.

A small displacer is accurately positioned in a liquid medium using a stepping motor. The displacer is
then suspended on a measuring wire which is wound onto a finely grooved wire drum. NMS8x
counts the rotations of the wire drum and to calculate the traveling distance of the wire and obtain
the liquid level change.

The drum is driven via coupling magnets that are completely separated by the drum housing. Outer
magnets are connected to the wire drum, with inner magnets connected to the drive motor. As the
inner magnets turn, their magnetic attraction causes the outer magnets to turn, as well, causing the
entire drum assembly to turn. The weight of the displacer on the wire creates torque on the outer
magnets generating change of magnetic flux. These changes generated in the drum assembly are
detected by a unique electromagnetic transducer on the inner magnets. The transducer transmits the
weigh signal to a CPU using a non contact principle (patented). The drive motor is actuated to keep
the weigh signal constant at set value defined by the operating command.

When the displacer is lowered and touches a liquid, the weight of the displacer is reduced by liquid
buoyancy force, which is measured by a temperature-compensated magnetic transducer. As a result,
the torque in the magnetic coupling changes, and this is measured by six hall sensors. A signal
indicating the weight of the displacer is sent to the motor control circuit. As the liquid levels rise and
fall, the displacer position is adjusted by the drive motor. The rotation of the wire drum is
continuously evaluated to determine the level value using a magnetic rotary encoder. In addition to
gauging the level, NMS8x can measure the interfaces between up to three liquid phases, and the
tank bottom, as well as spot and profile densities.

 1 Operating principle

A Displacer position data
B Weight data
1 Encoder
2 Motor
3 Rotary transformer
4 Shafts
5 Gears
6 Wire drum
7 Measuring wire
8 Displacer

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A0026903

Proservo NMS83

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RTD

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HART

Integration of tank sensors

In addition to measuring the level, interfaces, tank bottom, and density, the device can also be used
to integrate of tank sensors into tank inventory systems. All measured and calculated values can be
displayed on the built-in display. They can be transferred to an inventory control system via a field
communication protocol.

A0026902

 2 Measuring system

A HART multidrop mode
B HART and analog mode
1 Spot temperature
2 Proservo NMS8x
3 Field protocol transmits data to an inventory control system

Typical values measured by the sensors are:

• Level

• Spot temperature

• Average temperature

• Water level

• Pressure

• Secondary level value (for critical applications)

Major applications

The number of measuring functions and output options, as well as the compact design, enables
NMS8x to be installed in a wide range of applications at minimal cost.

Alcohol, food, and beverage industries

In alcohol, food, and beverage processes and storages, there exist an extensive need to measure and
manage a wide variety of products. Remote tank gauging by NMS8x combined with an inventory
management system is an ideal way to measure and manage tank contents.

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Typical tank installation

A0026904

 3 Typical tank installation 1

1 NMS8x
2 Measuring wire
3 Displacer
4 Stilling well

When installing NMS8x to a floating roof tank, be sure to use a stilling well to protect the
measuring wire. Otherwise the wire may break due to an external shock.

Application

NMS8x is primarily a highly accurate level measurement gauging instrument with the added ability
to measure density. The following level measurements are supported: liquid surface level and
interface level(s) between different liquids, as well as finding tank floor or datum plate. The
following density measurements are supported: single-point (spot measurements), as well as profile
measurements of all liquid(s) in a tank.

The choice of the most suitable displacer depends on the liquid conditions and measurement
functions. These can be classified as follows:

• Single measurement value only, e.g. level, interface, or density

• Multiple measurement application, e.g. level, interface, and density

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Measurement terminology

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A0026906

 4 NMS8x with standard level, I/F x 2, Tank bottom and spot density x 3 measurement

1 Upper density
2 Middle density
3 Lower density
4 Tank bottom
5 Lower I/F
6 Upper I/F
7 Level

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BA C

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A0026907

 5 Density Profile measurement

A Tank profile: density profiling throughout tank
B Interface profile: density profiling withing upper phase
C Manual profile: density profiling from a specific position to level
1 Level
2 Manual profile level
3 Upper phase (alcohol, liquid food, or beverage)
4 Middle phase (emulsion)
5 Lower phase (water)
6 Tank bottom

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Proservo NMS83

Displacer selection guide

A wide variety of displacers are available to suit different application. Proper displacer selection
ensures optimal performance and longevity. The following guidelines will assist you in selecting the
most suitable displacer for your application.

Displacer types

The following NMS8x displacers are available.

50 mm (1.97 in) 70 mm (2.76 in)

316L/PTFE 316L

A0032430

A0032429

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A

Ø50.8 (2)

a

45 (1.77)

85 (3.35)

116.6 (4.59)

2.5 (0.09)

B

Ø50 (1.97)

a

35 (1.38)

82.7 (3.26)

46.7 (1.84)

11.5
(0.45)

11.5
(0.45)

C

17 (0.67)

46.6 (1.83)

1 (0.03)

90 (3.54)

Ø70(2.76)

a

Displacer dimensions

A ⌀50 mm (1.97 in) 316L cylindrical displacer
B ⌀50 mm (1.97 in) PTFE cylindrical displacer
C ⌀70 mm (2.76 in) 316L conical displacer
a Immersion point

A0029581

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Proservo NMS83

A

Ø50.8 (2)

a

45 (1.77)

85 (3.35)

116.6 (4.59)

2.5 (0.09)

B

Ø50 (1.97)

a

35 (1.38)

82.7 (3.26)

46.7 (1.84)

11.5
(0.45)

11.5
(0.45)

C

17 (0.67)

46.6 (1.83)

1 (0.03)

90 (3.54)

Ø70(2.76)

a

A ⌀50 mm (1.97 in) 316L cylindrical displacer
B ⌀50 mm (1.97 in) PTFE cylindrical displacer
C ⌀70 mm (2.76 in) 316L conical displacer
a Immersion point

Weight (g) 253 250 245

Volume (ml) 143 118 124

Balance volume (ml) 70.7 59 52.8

Item

⌀50 mm (1.97 in) 316L

cylindrical displacer

⌀50 mm (1.97 in) PTFE

cylindrical displacer

⌀70 mm (2.76 in) 316L

conical displacer

The weight, volume, and balance volume are individually determined by each displacer and also
might vary depending on the values stated above.

Recommended displacer by application

Application Product level Interface level Density

Viscous liquid 50 mm (1.97 in) PTFE Not Recommended Not Recommended

Not viscous liquid (e.g. alcohol) 50 mm (1.97 in) 316L 50 mm (1.97 in) 316L 50 mm (1.97 in) 316L

A0029581

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Product level

In general, larger diameter displacers have better accuracy under similar conditions.

Interface level(s)

Cylindrical-shaped displacers, with rounded top and bottom, reduce resistance while moving through
liquid(s). This provides smoother movement and faster interface measurements compared to flat­faced displacers, particularly in density profile measurements that span the full tank height.

In order to move a displacer down through liquids, the displacer density (weight divided by
volume) must be higher than the liquid density.

Tank bottom and datum plate level

70 mm (2.76 in) and 50 mm (1.97 in) displacers reduce resistance while moving through liquids.
This provides smoother movement and faster interface measurements.

Density

Since the density is the calculated result of two measurements, a displacer with higher volume will
usually yield the most accurate density measurement. In most cases we recommend our
50 mm (1.97 in) diameter displacer for density measurement.

For non-viscous applications (e.g. clear alcohol), the 70 mm (2.76 in) displacer also works very well.

Level and density

When an application calls for equal emphasis on measuring both level and density, the
50 mm (1.97 in) and the 70 mm (2.76 in) diameter displacers will give the best all-around
performance.

Custody transfer

The 50 mm (1.97 in) displacer or larger is the choice for requirements per NMi.

The 110 mm (4.33 in), conical 316L displacer is the choice for requirements per PTB.

Material compatibility

Displacers are available in three different standard materials. Material compatibility should be
confirmed to ensure safe operation and optimal NMS8x performance.

316L

Stainless steel is a highly versatile industrial material that provides good compatibility with a wide
range of alcohol, liquid food, and beverage applications.

Alloy C

This high-performance material is harder than 316L, and provides excellent resistance to many of
the harshest corrosive chemical applications.

PTFE

One of the most well-known and versatile polymer materials, this high-performance material has
one of the lowest friction coefficients. It provides excellent performance in viscous/sticky liquids, and
also has excellent chemical resistance to a wide range of corrosives.

Process connection size

The process connection defines the tank process entry, and may affect the displacer size. The
standard NMS8x process connections start at 3”/DN80 and fit most tank gauging applications.
Accordingly, most applications can be covered with one of the 50mm or 70mm displacer options.
Smaller diameter displacers are available when the process connection is smaller.

When the 110 mm (4.33 in) diameter custody transfer approval (PTB) displacer is selected, a
separate calibration and maintenance chamber is recommended between the NMS8x and tank
process connection.

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Proservo NMS83

NXA820

NXA820

NXA820

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Measuring system

• From single tank level measurement to the largest process applications, Endress+Hauser tank
gauging devices are an integral part of tank farm management solutions. A wide variety of data
output protocols are available for seamless integration into many commonly used systems.

• A primary example is Tankvision from Endress+Hauser. Tankvision is a scalable system offering
local tank management for multiple loops via Modbus or V1 protocols. Accumulated data is
available to DCS and other plant management systems via a Host Link.

A0030168

 6 Integration of tank gauging devices into an inventory management system (typical example)

1 Proservo NMS8x
2 Pressure transmitter (e.g. Cerabar)
3 Spot temperature (e.g. Modular thermometer)
4 Tankside Monitor NRF81
5 Micropilot S FMR5xx
6 Micropilot NMR8x
7 Field protocol (e.g. Modbus, V1)
8 Tankvision Tank Scanner NXA820
9 Ethernet
10 Ethernet switch
11 Internet Browser
12 Tankvision Data Concentrator NXA821
13 Tankvision Host Link NXA822
14 Modbus
15 DCS or PLC

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Proservo NMS83

Input/output

Level measurement Measured variable

Proservo is primarily a highly accurate level measurement gauging instrument, with the added
ability to measure interfaces and densities. The following level measurements are supported: liquid
surface level and interface level(s) between different liquids, as well as finding tank bottom or datum
plate. The following density measurements are supported: single-point (called “spot”
measurements), as well as profile measurements of all liquid(s) in a tank.

Measuring range

• Level and interface: Max. 22 m (72 ft)(longer range is possible as special product)

• Density: 0.4000 to 2.000 g/cm
The level and interface measuring range depends on the measuring wire and material compatibility

to measured medium. Measuring wires are available in three different standard materials. Material
compatibility should be confirmed to ensure safe operation and optimal measuring performance.

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HART Ex ia/IS active input

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Proservo NMS83

A0027364

 7 HART Ex ia/IS active input

E1 HART +
E2 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 the
average temperature of the product.

Technical data

Transmitter power supply voltage 23.0 V - 380 Ω ⋅ I

load

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 when
ordering a device.

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NMx8x - XX xx xxxxxx ...

040

NMx8x - xx XX xxxxxx ...

050

I/O modules Overview

 8 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 a

detailed 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.

A0027363

Ordering feature 040: "Primary Output"

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

A1 1 Modbus RS485 4 →  18

B1 1 V1 4 →  19

E1 1 4-20mA HART Ex d/XP 8 →  20

H1 1 4-20mA HART Ex i/IS 8 →  20

Ordering feature 050: "Secondary IO Analogue"

Option Number of I/O

modules

A1 1 1 x "Ex d/XP 4-20mA HART + RTD input" 1 x 8 →  20

A2 2 2 x "Ex d/XP 4-20mA HART + RTD input" 2 x 8 →  20

B1 1 1 x "Ex i/IS 4-20mA HART+ RTD input" 1 x 8 →  20

B2 2 2 x "Ex i/IS 4-20mA HART+ RTD input" 2 x 8 →  20

C2 2 1 x "Ex i/IS 4-20mA HART + RTD input"

X0 0 none 0 -

Type of I/O module Number of terminals Technical data

2 x 8 →  20

1 x "Ex d/XP 4-20mA HART + RTD input"

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Proservo NMS83

NMx8x - xx xx XXxxxx ...

060

Ordering feature 060: "Secondary IO Digital Exd"

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

A1 1 1 x "2x relay + 2x discrete I/O" 1 x 4 →  22

A2 2 2 x "2x relay + 2x discrete I/O" 2 x 4 →  22

A3 3 3 x "2x relay + 2x discrete I/O" 3 x 4 →  22

B1 1 1x "Modbus RS485" 1 x 4 →  18

B2 2 1x "Modbus RS485"

1 x "2x relay + 2x discrete I/O"

B3 3 1x "Modbus RS485"

2 x "2x relay + 2x discrete I/O"

X0 0 none 0 -

"Modbus RS485": Technical data

No. 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

• None

Cable Three-wire cable with screening. The screening must be connected inside the housing.

Termination resistors To be set as required in specific environments

Topology • Serial bus

• Tree structure

Transmission distance Maximum 1 200 m (3 900 ft) including limbs or branches;

branches under 3 m (9.8 ft) are negligible

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

2 x 4 →  18

→  22

3 x 4 →  18

→  22

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Proservo NMS83

"V1": Technical data

No. of units Maximum 10 instruments per loop

Baud rate 3 300 bit/s

Parity Selectable:

• Odd

• Even

• None

Cable • Two-wire twisted pair; screening recommended

• Two-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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Proservo NMS83

"4-20mA HART" I/O module (Ex d/XP or Ex i/IS): Technical data

General data

No. of units Max. 6 instruments per loop

Baud rate 1 200 bit/s

Cable Two-wire, twisted pair screened cable;

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

the transmitter 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 the average temperature of the product.

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

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Data for passive usage (input or output)

 9 Passive input or output: Use terminals 1 and 2

Minimum terminal voltage 10.4 V

Maximum terminal voltage 29 V

A0033030

1)

1)

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

Data for active usage (input or output)

 10 Active input or output: Use terminals 2 and 3

Transmitter power supply voltage
(Ex d/XP)

Transmitter power supply voltage
(Ex i/IS)

Output load max. 500 Ω including signal line

18.5 V - 360 Ω ⋅ I

20.0 V - 360 Ω ⋅ I

load

load

1)

A0033031

Endress+Hauser 21

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

Proservo NMS83

"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

Input

Maximum pick-up voltage • 250 V

Minimum pick-up voltage • 25 V

• 250 V

• 5 V

DC

AC

DC

AC

Current consumption at maximum voltage • ≤ 1 mA (DC)

• ≤ 2 mA (AC)

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

1)

22 Endress+Hauser

Proservo NMS83

D

E

G

F

C

B

A

1

1

1

1

1　 　 　 3

2

2

2　 　 　 4

1

HR

CDI

WP

on

SIM

22334

4

112233445566778

8

POWER

i

D

E

F

C

B

A

1

1

1

1 3

2

2 4

1

HR

CDI

WP

on

SIM

22334

4

112233445566778

8

i

G

1

3

2

POWER

G1 N
G3 L

AC 85...264 V

Terminal assignment

Power supply

A0032445

 11 Terminal compartment (typical example) and ground terminals

Terminal area Module

Up to four I/O modules, depending on the order code

A/B/C/D
(slots for I/O
modules)

• 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 a detailed description refer to the Operating Instructions of the device in
question.

E HART Ex i/IS interface

• E1: H+

• E2: H-

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 (connec t to terminal 83 of the remote display)

• F4: Gnd (connect to terminal 82 of the remote display)

Power consumption: 28.8 VA

Power supply: 85 to 264 V

G

• G1: N

1)

AC

• G2: not connected

• G3: L

Protective ground connection (M4 screw)

A0018339

1) Maximum power varies depending on the configuration of the modules. As the value of 28.8 VA shows
maximum apparent power, select the applicable cables accordingly. The actual consumed effective power is
12 w.

Sources for gauge commands

Gauge commands can be sent via various sources.

• Displays or CDI (e.g. FieldCare)

• Digital input (e.g. switch)

• Fieldbus (Modbus, V1, HART)

The last received gauge command via any sources will be executed as usual.

During calibration, gauge commands are not accepted from any sources.

Endress+Hauser 23

X
X
X

X
X
X
X

X

X

mm

INST

LIFT

STOP
OFF

NXA820

1

2

3

1 Display operation
2 Digital input (e.g. switch)
3 Tankvision

Proservo NMS83

A0029575

Gauge command priorities

The priority of the gauge command for NMS8x is very simple. The last received gauge command via
any sources will be executed to take of the former gauge command. However the priority varies
depending on the devices. When replacing the device with the NMS8x, check the priorities shown
below.

NOTICE

Undesired gauge command will be executed.

If the setting is not changed, an undesired gauge command will be executed (e.g. Level command via
Fieldbus would overwrite Stop command for maintenance.).

If the system has been automatically or semi-automatically programmed for operation,

‣

maintenance or other purposes, the setting should be changed corresponding to use.

Proservo NMS8x

By display From digital input From Fieldbus

Command Priority Command Priority Command Priority

Level 1 Level 1 Level 1

Interface 1 Interface 1 Interface 1

Tank bottom 1 Tank bottom 1 Tank bottom 1

Spot density 1 Spot density 1 Spot density 1

Profile density 1 Profile density 1 Profile density 1

Up 1 Up 1 Up 1

Stop 1 Stop 1 Stop 1

Proservo NMS5/NMS7

By display From NRF560 From digital input From Fieldbus

Command Priority Command Priority Command Priority Command Priority

Level 4 Level 4 Level 4 Level 4

24 Endress+Hauser

Proservo NMS83

By display From NRF560 From digital input From Fieldbus

Interface 2 Interface 3 Interface 1 Interface 4

Tank bottom 2 Tank bottom 3 N/A N/A Tank bottom 4

Spot density 2 Spot density 3 N/A N/A Spot density 4

Profile density 2 Profile density 3 N/A N/A Profile density 4

Up 2 Up 3 Up 1 Up 4

Stop 2 Stop 3 Stop 1 Stop 4

Servo level gauge TGM5

By display From NRF560 From DRM9700 From digital input From Fieldbus

Command Priority Command Priority Command Priority Command Priority Command Priority

Level 4 Level 4 Level 4 Level 4 Level 4

Interface 2 Interface 3 N/A N/A N/A N/A Interface 4

Tank
bottom

Spot density 2 Spot density 3 N/A N/A N/A N/A Spot density 4

Profile
density

Up 2 Up 3 Up 1 Up 1 Up 4

Stop 2 Stop 3 N/A N/A Stop 1 Stop 4

2 Tank

bottom

2 Profile

density

3 N/A N/A N/A N/A Tank

bottom

3 N/A N/A N/A N/A Profile

density

4

4

Supply voltage

Servo level gauge TGM4000

By display From DRM9700 From digital input From Fieldbus

Command Priority Command Priority Command Priority Command Priority

Level 4 Level 4 Level 4 Level 4

Interface 2 Interface 1 N/A N/A Interface 4

Tank bottom 2 N/A N/A N/A N/A Tank bottom 4

Spot density 2 N/A N/A N/A N/A Spot density 4

Profile density 2 N/A N/A N/A N/A Profile density 4

Up 2 Up 1 Up 1 Up 4

Stop 2 Stop N/A Stop 1 Stop 4

85 to 264 VAC, 50/60 Hz, 28.8 VA

1)

1) maximum value; actual value depending on modules installed. 28.8 VA includes the nominal power and the cabling specification has to meet this
value. On the other hand, the effective power consumption is 12 W.

Endress+Hauser 25

Proservo NMS83

Cable entries

Ordering feature 090 "Electrical Connection"

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) Position 13 of the order code, e.g. NMx8x-xxxxxxxxxxxxA...

For the following devices with TIIS Ex d approval, cable glands are attached to the device (see
position 1 and 2 of the order code). These cable glands must be used.
Proservo NMS83-TC...

Cable specification Terminals

Terminal Wire cross section

Signal and power supply

• Spring terminals (NMx8x-xx1...)

• Screw terminals (NMx8x-xx2...)

Ground terminal in the terminal compartment max. 2.5 mm2 (13 AWG)

Ground terminal at the housing max. 4 mm2 (11 AWG)

1)

Cable entries (with blind plugs)

0.2 to 2.5 mm2 (24 to 13 AWG)

Overvoltage protection

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 the
plant.

Modbus communication line

• Observe the cable conditions from the TIA-485-A, Telecommunications Industry Association.

• Additional conditions: Use shielded cable.

V1 communication line

• Two wire (twisted pair) screened or un-screened cable

• Resistance in one cable: ≤ 120 Ω

• Capacitance between lines: ≤ 0.3 µF

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

26 Endress+Hauser

Proservo NMS83

Performance characteristics

Reference operating conditions

Measured value resolution

Maximum measured error

According to OIML R85

Level and interface ≤ 0.1 mm (0.004 in)

Density

Level ±0.4 mm (±0.016 in) Reference condition

Interface ±2 mm (±0.08 in) Reference condition

Tank bottom ±2 mm (±0.08 in) Reference condition

Density ±0.003 g/cm

≤ 0.001 g/cm

3

3

Accuracy of NMi approved calibration rig at Endress
+Hauser Yamanashi according to the combination of
the order code is as per the table below.

• Standard displacer 70 mm (2.76 in)

• Density difference 0.2 g/cm3 or more (min.
detectable density difference for interface
measurement is 0.1 g/cm

• Max. performance selected in feat.150

• Standard displacer 70 mm (2.76 in)

• Flat datum plate or flat tank bottom

• Max. performance selected in feat.150

Reference condition

• Standard displacer 50 mm (1.97 in) or
70 mm (2.76 in)

• On-site density calibration (offset)

• Max. performance selected in feat.150

3

The following values are valid for a level measurement distance up to 22 m (73.33 ft)

Displacer (ordering feature 120)

Ordering

feature 150

ICR Standard version, w/o calibration certificate ±1 mm (±0.04 in) ±1 mm (±0.04 in)

ICW Standard version, 3-point calibration

ICX Standard version, 5-point calibration

NTA Maximum performance, NMi type approval

NTC Custody transfer type approval acc. NMi

PTA Maximum performance, PTB type approval

PTC Custody transfer type approval per PTB,

Weight and measure approval

certificate

certificate

acc. OIML R85, API 3.1B, ISO 4622, factory
calibration certificate

OIML R85, API 3.1B, ISO4622, factory
calibration certificate

factory calibration certificate

factory calibration certificate

1AC, 2AC, 3AC, 4AC,

5AC

⌀50 mm (1.97 in) ⌀70 mm (2.76 in)

Accuracy

±1 mm (±0.04 in) ±1 mm (±0.04 in)

±1 mm (±0.04 in) ±1 mm (±0.04 in)

±0.6 mm (±0.024 in)

±1 mm (±0.04 in) ±1 mm (±0.04 in)

±0.6 mm (±0.024 in)

±1 mm (±0.04 in) ±1 mm (±0.04 in)

1BE, 4AE

±0.4 mm

(±0.016 in)

±0.4 mm

(±0.016 in)

Hysteresis

Within the specified accuracy (+/- 1 mm (0.039 in)) according to OIML R85 (2008)

It can be reduced by non hysteresis measurement mode.

Endress+Hauser 27

Proservo NMS83

Repeatability

Linearity

Long-term drift

Influence of ambient temperature

Influence of medium temperature

Influence of medium pressure

Effect of gas phase

0.1 mm (0.004 in)

Within maximum measured error

Within the specified error of measurement

Within the specified accuracy according to OIML R85 (2008)

None (Displacer principle is not influenced by medium temperature.)

No influence of medium pressure to the measuring principle.

No effect of gas phase to the measuring principle.

28 Endress+Hauser

Proservo NMS83

Installation

Requirements Type of tanks

Depending on the type of tank and application, different installation procedures are recommended
for NMS8x.

Type of tanks Without guide system With stilling well With guide wires

Fixed roof tank

Tank with agitator or heavy
turbulence

A0032437 A0032438 A0032439

A0032440 A0032441

• A stilling well is required in a floating roof tank and a covered floating roof tank.

• Guide wires cannot be installed in a floating roof tank. When the measuring wire is exposed
to free space, it may break due to an external shock.

• Installing guide wires is not allowed in pressurized tanks because the wires would prevent
closing the valve for replacing the wire, wire drum, or displacer. NMS8x installation position
is important for applications without the guide wire system in order to prevent the measuring
wire from being broken (refer to Operating Instructions for details ).

Endress+Hauser 29

Proservo NMS83

L

1

L

2

L

1

L

2

A

B

L

3

L

3

D

2

D

1

d

r

D

1

d

D

2

p(L )x

Mounting with a stilling well

The stilling well diameter that is required to protect the measuring wire without disturbing its
operation varies depending on the tank height. The stilling well could either be of constant diameter,
or narrower at its upper part and wider at its lower part. The following figure shows two examples of
the latter case, namely a concentric stilling well and an asymmetric stilling well.

A0029574

 12 Mounting with concentric stilling well

A Front view
B Side view
L1Length from the center of the calibration window to the upper part of the stilling well

L2Length from the center of the calibration window to the bottom of the stilling well
L3Length from the center of the calibration window to the bottom of the flange
D1Diameter of upper part of stilling well
D2Diameter of stilling well
d Diameter of displacer

p

Longitudinal wire position from the center of the flange
(Lx)
r Radial direction offset

30 Endress+Hauser

Proservo NMS83

L

1

L

2

L

1

L

2

A

B

L

3

L

3

D

2

D

1

d

r

D

1

d

D

2

p (L )x

A0026909

 13 Mounting with asymmetric stilling well

A Front view
B Side view
L1Length from the center of the calibration window to the upper part of the stilling well

L2Length from the center of the calibration window to the bottom of the stilling well
L3Length from the center of the calibration window to the bottom of the flange
D1Diameter of upper part of stilling well
D2Diameter of stilling well
d Diameter of displacer

p

Longitudinal wire position from the center of the flange
(Lx)
r Radial direction offset

• L3: length from center of the calibration window to the bottom of the flange
(77 mm (3.03 in) + flange thickness).
For JIS 10K 150A RF, the flange thickness is 22 mm (0.87 in).

• When using an asymmetric stilling well, take into account the lateral shift of the displacer
and follow the NMS8x mounting direction as shown in the figure.

• To calculate the required stilling well diameters, the formula below should be used. The
following tables contain the necessary parameters in order to calculate the dimensions of the
stilling well. Be sure to have appropriate dimensions of the stilling well according to each
dimension in the table.

• The radial direction offset (r) is required for only the 47 m (154.20 ft) and 55 m (180.45 ft)
wire drum. For all other drums, the offset is 0 mm/in.

Endress+Hauser 31

Proservo NMS83

Feature: 110 Description

(Measuring range; Wire;

Diameter)

G1

H1

Feature: 120 Description

1AA 316L; 30 mm (1.18 in) cylindrical 30 mm (1.18 in)

1AC 316L; 50 mm (1.97 in) cylindrical 50 mm (1.97 in)

1BE 316L; 70 mm (2.76 in) conical 70 mm (2.76 in)

1BJ 316L;110 mm (4.33 in) conical 110 mm (4.33 in)

2AA PTFE; 30 mm (1.18 in) cylindrical 30 mm (1.18 in)

2AC PTFE; 50 mm (1.97 in) cylindrical 50 mm (1.97 in)

3AC AlloyC276; 50 mm (1.97 in)

4AC 316L polished; 50 mm (1.97 in)

4AE 316L polished; 70 mm (2.76 in)

5AC PTFE; 50 mm (1.97 in) cylindrical,

47 m (154.20 ft); 316L;

0.15 mm (0.00591 in)

55 m (180.45 ft); 316L

0.15 mm (0.00591 in)

(Displacer material; Type)

cylindrical

cylindrical

conical

hygienic white

NMS80 NMS81 NMS83 r

6 mm (0.24 in)

6 mm (0.24 in)

NMS80 NMS81 NMS83 d

50 mm (1.97 in)

50 mm (1.97 in)

70 mm (2.76 in)

50 mm (1.97 in)

Parameter Description

d Diameter of displacer

p(Lx) Longitudinal wire position from the center of the flange

The value can be determined by using following graph.

r Radial direction offset

s Safety factor recommended: 5 mm (0.197 in)

The following graph shows the lateral shift of the displacer depending on the measured distance for
the different wire drums.

32 Endress+Hauser

Proservo NMS83

L , L (mm) ( )

1 2

in

p (Lx) (mm) ( )in

-1.4 -1.3 -1.2 -1.1 -1.0 -0.9 -0.8 -0.7 -0.6 -0.5 -0.4 -0.3 -0.2 -0.1 0.0 0.1 0.2 0.3

0

100

200

300

400

500

600

700

800

900

1000

1100

1200

1300

1400

1500

1600

1700

1800

1900

2000

2100

2200

0
2000
4000
6000
8000

10000
12000
14000
16000
18000
20000
22000
24000
26000
28000
30000
32000
34000
36000
38000
40000
42000
44000
46000
48000
50000
52000
54000
56000

-36 -32 -28 -24 -20 -16 -12 -8 -4 0 4 8

a

d

e

c

b

f

A0027997

 14 Lateral shift of displacer according to measurement range

a 16 m (A3) (NMS80/NMS81/NMS83)
b 22 m (C2) (NMS80/NMS81/NMS83)
c 28 m (D1) (NMS80/NMS81)
d 36 m (F1) (NMS80/NMS81)
e 47 m (G1) (NMS81)
f 55 m(H1) (NMS81)

Upper diameter of stilling well

The dimension of D1 has to be the largest value of the dimensions D1a, D1b , D1c, and D1d according to
the following formula.

Endress+Hauser 33

D1 Dimension

(Example)

>68.1 mm

(2.68 in)

D

Dimension

1x

Example Parameter

68.1 mm
(2.68 in)

65.6 mm
(2.58 in)

Description Formula

D

1a

D1 dimension when the

= 2 x ( |p (0)|+ d/2 + s)
displacer is at the center of the
calibration window

D

1b

D1 dimension when the

= 2 x (|p (L1)|+ d/2 + s)
displacer is at the upper part of
the stilling well

Proservo NMS83

D1 Dimension

(Example)

D

Dimension

1x

Example Parameter

50.9 mm
(2.00 in)

D

1c

D

1d

Description Formula

D1 dimension when the
displacer is at the bottom of the
stilling well

D1 dimension when the radial
direction offset is considered.
This calculation is used only
with the 47 m (154.20 ft) wire
drum (G1 in Feature110) and
55 m (180.45 ft) (H1 in feature

110)

= 2 x ( |p (L2)|+ s)

= 2 x (d/2 + r + s)

Example: L1 = 1 000 mm, L2 = 20 000 mm, d = 50 mm, s = 5.0, 28 m drum

Lower diameter of stilling well

The dimension of D2 has to be the larger value of the dimensions D1 and D2b .

See the table below.

Concentric pipe

D2 Dimension

(Example)

>100.9 mm

(3.97 in)

D2x Dimension

Example Parameter

68.1 mm
(2.68 in)

100.9 mm
(3.97 in)

D

1

D

2b

Description Formula

Calculated D1 value

D2 dimension when the displacer is
in L2 length

= 2 x (|p (L2)| + d/2 + s)

Example: L2 = 20 000 mm, d = 50 mm, s = 5.0, 28 m drum

Asymmetric pipe

D2 Dimension

(Example)

>84.5 mm

(3.33 in)

D2x Dimension

Example Parameter

68.1 mm
(2.68 in)

84.5 mm
(3.33 in)

D

1

D

2b

Description Formula

Calculated D1 value

D2 dimension that the displacer can
pass through (nth groove)

= |p (L2)| + d/2 + s + D1/2

Example: L2 = 20 000 mm, d = 50 mm, s = 5.0, 28 m drum

Recommendations for NMS8x mounting with a stilling well

Follow the recommendations for mounting NMS8x with a stilling well.

• Keep the pipe connection welds smooth.

• When drilling holes into the pipe, keep the interior surface of the holes clear of metal chips
and burrs.

• Keep the pipe as vertical as possible. Check using a plumb bob.

• Install the asymmetric pipe under the valve and align the centers of the NMS8x and the
valve.

• Set the center of the lower part of the asymmetric pipe in the direction of the lateral motion.

• Observe the recommendations as per API MPMS chapter 3.1B.

• Confirm grounding between NMS8x and the tank nozzle.

34 Endress+Hauser

Proservo NMS83

Environment

Ambient temperature range

Classification of environmental conditions according to DIN EN 60721-3-4

Storage temperature

Humidity

Degree of protection

Electromagnetic compatibility (EMC)

Device –40 to +60 °C (–40 to +140 °F)

Display module –20 to +70 °C (–4 to +158 °F)

The readability of the display may be impaired at temperatures outside this



temperature range.

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

–50 to +80 °C (–58 to +176 °F)

≤ 95 %

• IP68/66 according to DIN EN 60529

• Type 6P/4x according to NEMA 250

• Transient emissions according to DIN EN 61326, class B

• Interference resistance according to DIN EN 61326, Appendix A (Industry use) and NAMUR
recommendation NE21

Endress+Hauser 35

Process

1

2

3

4

5

6

Proservo NMS83

Process temperature range

–200 to +200 °C (–328 to 392 °F)

If the specification of the tank application exceeds the range above, a special displacer can be
ordered.

Process sealing

A1 HNBR –30 to 150 °C (–22 to 302 °F)

B1 FKM, GLT –40 to 150 °C (–40 to 302 °F)

C1 CR Chloropren –30 to 80 °C (–22 to 176 °F)

D1 PTFE (Wire drum FKM) –100 to 150 °C (–148 to 302 °F)

E1 VMQ silicone –40 to 200 °C (–40 to 392 °F)

A temperature difference exists between the liquid in the tank and the NMS8x on the tank
nozzle due to the distance from each other. Also, the process sealing temperature of NMS8x
does not show the temperature for the liquid temperature. The process sealing temperature
shows the temperature of the gas that reaches inside the housing of the NMS8x. In most cases,
the gas temperature is the same as the ambient temperature. If there are any temperature
differences between the process sealing and the gas, install a pipe or chamber between the
NMS8x and the tank nozzle to adjust the temeparature or cover the tank with a heat insulting
material to control the temperature.

 15 Process sealing

1 Chamber or pipe for adjusting temperature
2 Heat insulting material
3 Measuring wire
4 Displacer
5 Tank wall
6 High or low temperature liquid

Process pressure range

Medium density

Housing type Process pressure range

Stainless steel 0 to 6 bar(600 Kpa/0 to 87 psi)

0.430 to 2.000 g/cm3 (27 to 125 lb/ft3)

36 Endress+Hauser

A0028848

Proservo NMS83

Medium density difference for interface measurement

Viscosity

0.1 g/cm3 (6.24 lb/ft3)

0 to 5 000 mPa s

Endress+Hauser 37

Custody transfer approval

Proservo NMS83

Ordering feature 150
"Accuracy, Weight +
Measure Approval"

ICR Standard version (±1 mm), without calibration certificate

ICW Standard version (±1 mm), 3-point calibration certificate

ICX Standard version (±1 mm), 5-point calibration certificate

LTA Maximum performance (±0.4 mm), type approval according to LNE, OIML R85, API

LTC Custody transfer (±1 mm) type approval according to NMi, OIML R85, API 3.1B,

NTA Maximum performance (±0.4 mm), type approval according to NMi, OIML R85, API

NTC Custody transfer (±1 mm) type approval according to NMi, OIML R85, API 3.1B,

PTA Maximum performance (±0.4 mm), PTB type approval, factory calibration certificate

PTC Custody transfer (±1 mm) type approval per PTB, factory calibration certificate

1) Position 25 to 27 in the order code (e.g. NMS8x-xxxxxxxxxxxxxxxxxxxxxxxxICR...)

Accuracy properties

1)

3.1B, ISO4622, factory calibration certificate

ISO4622, factory calibration certificate

3.1B, ISO4622, factory calibration certificate

ISO4622, factory calibration certificate

• Depending on the displacer (ordering feature 120) some of these versions will not be
available.

• Proservo NMS8x that are certified for Custody Transfer applications are calibrated on a
certified production rig. The production rig reference standard is a laser tracker with an
absolute accuracy of ±0.010 mm and a resolution of 0.0002 mm. Calibration is performed at
10 equally-spaced measuring points over the full measuring range (up to 40 m (131 ft)).
Additionally, hysteresis is checked at three points.

• The Maximum Permissible Error (MPE) is 0.4 mm (0.016 in) for maximum performance
models, and ±1 mm (±0.04 in) for custody transfer models. The resultant factory calibration
certificate is included in the scope of delivery along with the respective type approval
certificate.

38 Endress+Hauser

Proservo NMS83

414 (16.8)

314 (12.36)

218 (8.58)

73 (2.87)

22 (0.87)

314 (12.36)

313.5 (12.34)

227.5 (8.96)

48 (1.89)

135 (5.31)

55 (2.17)

100.3 (3.95)

213.5 (8.41)

99 (3.9)

218 (8.58)

213.5 (8.41)

Dimensions

Mechanical construction

Weight

The thickness of the flange (22 mm (0.87 in)) shows the specification of the 10K 150A RF
aluminium flange JIS B2220.

• Approx. 30 kg (66.1 lb) with NPS 3" Cl.150, DN80PN10/16, 10K80A, 80A150lbs flange

• Approx. 37 kg (81.6 lb) with NPS 6" Cl.150, 10K150A flange

The weights vary depending on the selected options.

The weights described above show the products in order option 070 AC (Transmitter Alu,
coated, process 316/316L). The weight of products in order option BC (Transmitter + process
316/316L) is approximately 7.8 kg (17.2 lb) heavier than that of AC.

A0026911

Endress+Hauser 39

Materials Material of housing

1

2

3

Feature Option Housing descriptions

070 AC Transmitter Alu, coated, process 316/316L

Materials of measuring wire

Feature Option Wire descriptions

110 A3 16 m (53.33 ft); PFA >316L; 0.4 mm (0.016 in)

110 C1 22 m (73.33 ft); 316, 0.2 mm (0.008 in)

Material of process connection (flange)

Feature Option Descriptions of process connection (flange)

140 AFJ NPS 3" Cl.150 RF, 316/316L flange ASME B16.5

140 AHJ NPS 6" Cl.150 RF, 316/316L flange ASME B16.5

140 GSJ DN80 PN10/16 B1, 316L flange EN1092-1

140 PFJ 10K 80A RF, 316L flange JIS B2220

140 PHJ 10K 150A RF, 316L flange JIS B2220

140 P5J 10K 80A FF,316L flange JIS B2220

140 P6J 10K 100A FF, 316L flange JIS B2220

140 QFJ 80A 150lbs RF, 316L flange JPI 7S-15

Proservo NMS83

A0029114

1 Housing
2 Flange
3 Measuring wire

40 Endress+Hauser

Proservo NMS83

1

E

Operability

Operating concept

Operating options

Operator-oriented menu structure for user-specific tasks

• Commissioning

• Operation

• Diagnostics

• Expert level

Operating languages

• English

• German

• Japanese
Feature 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

• 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

 16 NMS83 Display

1 Display

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

A0028870

Endress+Hauser 41

Remote operation

NXA820

5

6

4

1 2 3

7

2

3

CDI

1

Proservo NMS83

A0025621

 17 Remote operation of Tank Gauging devices

1 Proservo NMS8x
2 Tankside Monitor NRF81
3 Micropilot NMR8x
4 Field protocol (e.g. Modbus, V1)
5 Tankvision Tank Scanner NXA820
6 Ethernet
7 Computer with operating tool (e.g. FieldCare)

Operation via service interface

A0028871

 18 Operation via service interface

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

42 Endress+Hauser

Proservo NMS83

Certificates and approvals

Currently available certificates and approvals can be called up via the product configurator.

CE mark

RCM-Tick marking

Ex approval

Single seal according to ANSI/ISA 12.27.01

The measuring system meets the legal requirements of the applicable EC guidelines. These are listed
in the corresponding EC Declaration of Conformity together with the standards applied.

Endress+Hauser confirms successful testing of the device by affixing to it the CE mark.

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

A0029561

The devices are certified for use in hazardous areas and the relevant safety instructions are provided
in the separate "Safety Instructions" (XA) document. Reference is made to this document on the
nameplate.

The separate documentation "Safety Instructions" (XA) containing all the relevant explosion
protection data is available from your Endress+Hauser Sales Center.

The devices have been designed according to ANSI/ISA 12.27.01 as single seal devices, allowing the
user 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)

WHG

Weight & Measure approval

Non-ionizing radiation protection

Pressure Equipment Directive 2014/68/EU (DGRL / PED)

Use for level monitoring (MIN, MAX, range) up to SIL 2 according to IEC 61508:2010.

For details refer to the "Functional Safety Manual":
SD01920G (NMS80, NMS81, NMS83)

in preparation

• OIML R85 (2008)

• NMi

• PTB

• PAC

• WELMEC

• GOST (in preparation)
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 is
indicated on the display and via the communication protocol.

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

Pressure equipment can be classified as pressurized equipment in accordance with Pressure
Equipment Directive 2014/68/EU, if the volume V > 1 l (0.264 gal). If the product of max. allowable
pressure PS and the pressurized volume V of the sensor, i.e. PS*V ≤ 25 bar l (95.7 psi gal), the
pressure equipment is subject to the Pressure Equipment Directive (c.f. Pressure Equipment Directive
2014/68/EU, Article 4, point 3). The Pressure Equipment Directive only requires that the pressure
equipment shall be designed and manufactured in accordance with the “sound engineering practice
of a Member State”.

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Proservo NMS83

Reasons:

• Pressure Equipment Directive (PED) 2014/68/EU Article 4, point 3

• Pressure equipment directive 2014/68/EU, Commission's Working Group “Pressure”, Guideline
A-08

Note:

A partial examination shall be performed for pressure instruments that are part of safety equipment
for the protection of a pipe or vessel from exceeding allowable limits (equipment with safety
function in accordance with Pressure Equipment Directive 2014/68/EU, Article 2, point 4).

Test, certificate

Other standards and guidelines

Ordering feature 580 "Test,
Certificate"

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

JB Conformity to NACE MR0175, wetted metallic parts

JE Conformity to NACE MR0103, wetted metallic parts

KE Pressure test, internal procedure, inspection certificate

Designation

certificate

Industry standards

• Directive 2002/95/EC: "Restriction of Hazardous Substances Directive" (RoHS)

• Directive 2004/22/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 oilfield
equipment"

• API Recommended Practice 2350: "Overfill Protection for Storage Tanks in Petroleum Facilities"

• API MPMS: "Manual of Petroleum Measurement Standards"

• EN 1127: "Explosive atmospehres - 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 in
storage tanks by automatic methods"

• ISO6578: "Refrigerated hydrocarbon liquids - Static measurement - Calculation procedure"

• ISO 11223: "Petroleum and liquid petroleum products - Determination of volume, density and
mass of the contents of verical cylindrical tanks by Hybrid Tank Measurement Systems"

• ISO15169: "Petroleum and liquid petroleum products - Direct static measurement - Measurement
of 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"

• PTBA-A-4.2: "Volume measuring devices for liquids in a stationary condition - Storage containers
and their measuring devices"ur

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 2004/22/EC of the European Parliament and of the Council of 31 March 2004 on
measuring instruments

44 Endress+Hauser

Proservo NMS83

Ordering information

Ordering information

Marking

Shipping condition

Detailed ordering information is available from the following sources:

• In the Product Configurator on the Endress+Hauser website: www.endress.com -> Click "Corporate"

-> Select your country -> Click "Products" -> Select the product using the filters and search field ->
Open product page -> The "Configure" button to the right of the product image opens the Product
Configurator.

• From your Endress+Hauser Sales Center: www.addresses.endress.com

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 as
measuring 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

Option of ordering feature 895
"Marking"

Z1 Tagging (TAG)

Z2 Bus address

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

To enable turnkey operation and commission, NMS8x is shipped in all-in-one condition except for
the following specifications.

• 47 m (154.20 ft) measuring range

• 55 m (180.45 ft) measuring range

• 110 mm (4.33 in) displacer

• NPS8 in flange

• Cleaned from oil+grease option

Meaning

Endress+Hauser 45

Application packages

1

2

2

3 1

Proservo NMS83

Advanced tank measurement methods

The device software provides the following tank measurement methods:

• Direct level measurement →  46

• Hybrid tank measurement system (HTMS) →  47

• Hydrostatic tank shell correction (HyTD) →  48

• Thermal tank shell correction (CTSh) →  48

Direct level measurement

If no advanced tank measurement methods have been selected, level and temperature are measured
directly.

Direct level measurement modes

Measuring mode Installation example Measured variables Calculated variables

Level only

1 NMS8x
2 To inventory management system

Level + temperature

Level None

A0026912

• Level

• Temperature (point or average)

None

A0026913

1 NMS8x
2 To inventory management system
3 Temperature transmitter (point or average)

46 Endress+Hauser

Proservo NMS83

2

3

D1

1

2

3

4 1

D3

HTMS measuring modes

Measuring mode Installation example Measured variables Calculated variables

HTMS + P1

This mode should be used in atmospheric (i.e.



non-pressurized) tanks

HTMS + P1 + P3

This mode should be used in non- atmospheric



(i.e. pressurized) tanks

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.

• Level

• Bottom pressure (at position
D1)

A0026914

1 NMS8x
2 To inventory management system
3 Pressure transmitter (bottom)

• Level

• Bottom pressure (at position
D1)

• Top pressure (at position
D3)

Density of the
medium

Density of the
medium

A0026915

1 NMS8x
2 To inventory management system
3 Pressure transmitter (bottom)
4 Pressure transmitter (top)

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Proservo NMS83

Δx

Hydrostatic tank shell correction (HyTD)

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 the
liquid stored in the tank. The compensation is based on a linear approximation obtained from
manual hand dips at several levels distributed over the full range of the tank.

A0026832

 19 Movement Δx of the tank reference height due to the bulging of the tank shell caused by hydrostatic

pressure

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 is
based on the thermal expansion coefficients of steel and on insulation factors for both the dry and
wetted 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.

48 Endress+Hauser

Proservo NMS83

32.5 (1.28)

319 (12.6)

471.6 (18.6)

Accessories

Device-specific accessories Weather protection cover

 20 Weather protection cover; dimensions: mm (in)

Materials

Part Material

Protection cover and mounting brackets 316L (1.4404)

Screws and washers 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: 71305035 (for NMS8x)

A0028872

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Proservo NMS83

Calibration chamber

A calibration chamber is recommended for use with tank level gauges in order to allow maintenance
(removing the 70 mm (2.76 in) displacer or larger), while the tank is in service. Contact your Endress
+Hauser Sales Center if necessary.

Ball valve

Ball valves are recommended for use with tank level gauges in order to allow maintenance such as
removing displacers while tank is in service. Contact your Endress+Hauser Sales Center if necessary.

Control switch

A control switch is used for field mounted tank gauges. This provides additional gauge operation
contact switching in order to control the gauge’s operation, such as hoisting up the displacer. Contact
your Endress+Hauser Sales Center if necessary.

Relief valve and pressure gauge

A relief valve is used to release pressure inside the housing of NMS8x before maintenance.

 21 Relief valve

A pressure gauge is used to check process pressure inside the housing.

 22 Pressure gauge

A0028881

A0028882

50 Endress+Hauser

Proservo NMS83

1

2

1

2

A0029104

 23 Mounting position of relief valve and pressure gauge

1 Pressure gauge
2 Relief valve

Cleaning nozzle and gas purging nozzle

A cleaning nozzle used for washing inside housing is especially recommended for F&B or alcohol
applications.

A gas purging nozzle used for purging gas inside the housing is especially recommended for a
nitrogen blanket for petrochemical or chemical applications.

A0028884

 24 Holes for cleaning nozzle and gas purging nozzle

1 Cleaning nozzle
2 Gas purging nozzle

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Proservo NMS83

Communication-specific accessories

Service-specific accessories

Accessory Description

WirelessHART Adapter
SWA70

Accessory Description

Commubox FXA195
HART

Accessory Description

Commubox FXA291 Connects Endress+Hauser field devices with CDI interface (= Endress+Hauser

Accessory Description

FieldCare Endress+Hauser's FDT-based Plant Asset Management tool.

Connects field devices to a WirelessHART network.
The WirelessHART adapter can be mounted directly at a HART device and is easly
integrated into an existing HART network. It ensures safe data transmission and
can be operated in parallel with other wireless networks.

For details refer to Operating Instructions BA00061S



For intrinsically safe HART communication with FieldCare via the USB interface.

For details refer to Technical Information TI00404F



Common Data Interface) to the USB interface of a computer.

For details refer to Technical Information TI00405C



Helps to configure and maintain all field devices of your plant. By supplying status
information it also supports the diagnosis of the devices.

For details refer to Operating Instructions BA00027S and BA00059S.



System components

Accessory Description

RIA15 Compact process display unit with very low voltage drop for universal use to display

4 to 20 mA/HART signals

For details refer to Technical Information TI01043K.



Tankvision

• Tank Scanner NXA820

• Data Concentrator
NXA821

• Host Link NXA822

Inventory Management System with completely integrated software for operation
via standard web browser

For details refer to Technical Information TI00419G.



52 Endress+Hauser

Proservo NMS83

Documentation

Technical Information (TI)

Brief Operating Instructions (KA)

Operating Instructions (BA)

Description of Device Parameters (GP)

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

Proservo NMS83 TI01250G

The Brief Operating Instructions contain all the essential information from incoming acceptance to
initial commissioning.

Device Brief Operating Instructions

Proservo NMS83 KA01206G

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.

Device Operating Instructions

Proservo NMS83 BA01462G

The Description of Device Parameters provides a detailed explanation of each individual parameter in
the 2nd part of the operating menu: the Expert menu. It contains all the device parameters and
allows 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.

Device Description of Device Parameters

Proservo NMS83 GP01080G

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Proservo NMS83

Safety instructions (XA)

Ordering feature 010 "Approval" Meaning XA

BC ATEX II 1/2G Ex db [ia Ga] IIC T6 Ga/Gb XA01495G

FD FM C/US XP-AIS Cl.I Div.1 Gr.BCD T6

AEx db [ia Ga] IIC T6 Ga/Gb

GC EAC Ga/Gb Ex db [ia Ga] IIC T6...T1 X XA01711G

IC IEC Ex db [ia Ga] IIC T6 Ga/Gb XA01495G

1)

KC

MC INMETRO Ex d[ia] IIC T6 Ga/Gb XA01705G

NC NEPSI Ex d[ia] IIC T6 Ga/Gb XA01704G

TC TIIS Ex d[ia] IIC T4 Ga/Gb XA01600G

1) KC approval is covered with IEC Ex approval.

KC Ex d[ia] IIC T6 Ga/Gb XA01495G

XA01496G

54 Endress+Hauser

Proservo NMS83

Registered trademarks

FieldCare

Registered trademark of the Endress+Hauser Process Solutions AG, Reinach, Switzerland

MODBUS

Registered trademark of the MODBUS-IDA, Hopkinton, MA, USA

®

®

Endress+Hauser 55

*71411299*

71411299

www.addresses.endress.com