Endress+Hauser Prothermo NMT 539 Handbuch

Technical Information

TI 042N/08/en/04.06 Prothermo

NMT 539

Intrinsically safe multi-signal converter with

precision average temperature and water bottom

sensor for inventory control and custody transfer

applications

Applications

The Prothermo NMT 539 is an intelligent

HART signal converter, with a combined

average temperature sensor and water

bottom interface probe. For average

temperature measurement, it consists of

precision multi-spot Pt100 elements. The

NMT 539 is a highly capable solution for

a variety of tank gauging applications

and provides both constant average

temperature data and water interface

data via HART communication. For

accurate inventory measurement, it is

best suited connected to

Endress+Hauser's Proservo NMS 53x or

Tank Side Monitor NRF 590 with

Micropilot radar.

Features

•Intrinsically safe device allowing for the

safest electrical configuration possible.

•Available in four different versions

based on customer requirements:

Converter Only

Converter and Temperature probe

Converter and water bottom probe

Converter, temperature and water

bottom probe

•Converter is compatible with various

element types in third party

manufacturer temperature probes.

•Compatible with Endress+Hauser's

user friendly ToF (Time-of-Flight) tool.

•Variety of process connections and

cable entries available to meet

worldwide classifications.

Prothermo NMT 539

2Endress+Hauser

Product type

Measurement system The Prothermo NMT 539 is available in four different versions:

•Converter only

•Converter + Average temperature probe

•Converter + Water bottom (Capacitance) sensor

•Converter + Average temp probe + Water bottom sensor

The converter only version can be retrofitted without modifications onto existing third party

average temperature probes, such as Whessoe Varec 9909 and 1700 and Weed Beacon MW

type probes. The average temperature probe + converter inherits all the functionality of the former

Prothermo NMT 535/536/537 series. The water bottom (WB) + converter provides constant water

interface level data for the host level gauge for determining the multi-layered water bottom level

measurement. The average temperature + WB + converter is the ultimate multi-function sensor,

transmitting temperature and water interface level data along only one pair of HART signal cables

to the host the Proservo NMS 53x or NRF 590 Tank Side Monitor.

NMT 539 +WB operation principle (Converter + Temp + WB probe version)

Note!

Different types of NMT 539, including "Converter only," "Coverter + average temperature" and

"Converter + WB" are simpler versions of the "Converter + WB + temperature" probe.

Converter housing

360mm adjustable

threaded connection

360mm adjustable

threaded connection

Flange

C/F Module

CPU Module

Power Supply Module

Noise Filter

IS HART

communication

IS HART

communication

Gas

Pt100 multi-spot elements

up to 16 points

Pt100 multi-spot elements

up to 16 points

Liquid

Capacitance WB sensor

Max 2 Pt100 elements

can be inserted in

WB sensor

Max 2 Pt100 elements

can be inserted in

WB sensor

Isolated capacitance

signal data to

C/F module

Isolated capacitance

signal data to

C/F module

WB sensor

coaxial signal cable

WB sensor

coaxial signal cable

WB sensor

signal FG

WB sensor

signal FG

Prothermo NMT 539

Endress+Hauser 3

System diagram

Connection with Proservo

NMS 53x

NMT 539 Converter +

Temp. version

The Prothermo NMT 539 is the successor of the former NMT 535 Ex i version. For proper

migration, the NMT 539 has inherited all the functionality and specifications of the NMT 535,

including process connections, cable entries and wiring method.

Since the Proservo NMS 53x already provides water interface measurement, the NMT 539

Converter + Average temperature may be the best version when used in combination with the

Proservo. When the Converter + WB + Average temperature version is used in combination with

the Proservo, the product in the tank will be thoroughly managed with level, continuous average

temperature and water interface measurement.

All the necessary configuration and parameter settings for the NMT 539 are performed on both

the Proservo NMS 53x and ToF tool.

The NMT 539 receives liquid level data from the Proservo, then calculates liquic and gas phase

average temperature. Calculated data and basic information, including raw data for each

temperature element and device status, are transmitted to the Proservo.

From the Proservo NMS 53x or NRF 590 Tank Side Monitor, all sensor data are sent to the interface

unit via V1 communication protocol.

Note!

Since the Proservo is a multi-functional device (measurement and data transmission), the

Promonitor NRF 560 acts as a tank side remote data indicator and controller for Proservo. The

standard NRF 560 has no data transmission functionality. For special applications, an optical fiber

transmission version is available. Please consult with your Endress+Hauser representative for

more information.

All gathered data in the interface unit is sent to inventory management software, such as

Endress+Hauser's FuelsManager or NXS-310 (MDP-II program), or directly sent to the customer's

specific DCS or PLC.

Liquid Level Power (AC/DC)

RTU

NMS 53x

NRF560

Ex i HART Loop

(Data transmission)

Liquid & Gas

Temperature

NMT 539

CPU

COMM

I/O

ERROR

+24V

+5V

+15V

-15V

NR30 (MDP-II I/F)

NRM

NRS

V1 communication

to Interface

Communication

to Host system

Fuels Manager

NXS-310

(MDP-II)

Power (AC/DC) Ex d HART Loop

(Data transmission

& Remote control)

Prothermo NMT 539

4Endress+Hauser

Connection with Tank Side

Monitor NRF 590

NMT 539 Converter +

Temp. + WB version

The NMT 539 Converter + Temp. + WB is utilised effectively in combination with radar level

gauging. Water interface, temperature and level measurement, with data collection and

calculations via the NRF 590, allows for optimal inventory control. Basic functionality of the NMT

539 is displayed and configured on the NRF 590. Detailed NMT 539 functionality and data access

can be performed by the ToF tool.

The NMT 539 receives radar level data from the NRF 590 and then calculates liquid and gas

phase average temperature. Calculated and standard data, including temperature element raw

data and device status, are transmitted to the NRF 590..

Depending on the size of the tank farm and data processing functionality, measurement data can

be transmitted to various interface units via V1 protocol or other industry standard communication

protocols (please see the NRF 590 technical information).

All gathered data in the interface unit is sent to inventory management software, such as

Endress+Hauser's FuelsManager or NXS-310 (MDP-II program), or directly sent to the customer's

specific DCS or PLC.

Liquid Level

Power (AC/DC)

FMR Power

(DC, Exi)

RTU

FMR 533

NRF590

Ex i HART Loop

(Data transmission)

Liquid & Gas

Temperature

NMT 539

Water Interface

(WB)

CPU

COMM

I/O

ERROR

+24V

+5V

+15V

-15V

NR30 (MDP-II I/F)

NRM

NRS

V1 communication

to Interface

Communication

to Host system

FuelsManager

NXS-310

(MDP-II)

Prothermo NMT 539

Endress+Hauser 5

Input

Measured variables Liquid and gas temperature range -200 ...+235 °C (-328 ...+455 °F), RTD signal

Water interface level (water bottom) range 1m ...2m (3.3 ...6.6 ft), capacitance signal

Communication 2 wire, Endress + Hauser HART protocol to host commanding gauge

•The Proservo NMS 53x

•The Tank Side Monitor NRF 590

Compatible element

(Converter only version)

Pt100

Cu90

Cu100

PtCu100

Note!

NMT 539 Converter + Temp. version has only Pt100 elements installed. The element types above

can be utilised in third party temperature probes, such as the Endress+Hauser 9909, 1700 or

Weed Beacon MWR. Other manufacturer multi-resistant and multi-spot average temperature

probes may be compatible.

Please consult your Endress+Hauser representative for further details.

Number of elements Maximum of 16 can be connected.

Output

Data transmission Temperature & Water Bottom data via 2 wire intrinsically safe Endress + Hauser HART protocol.

Connection To Endress + Hauser host commanding gauge

•The Proservo NMS 53x

•The Tank Side Monitor NRF 590

Prothermo NMT 539

6Endress+Hauser

Installation

Wiring Wiring of the NMT 539 must meet intrinsically safe requirements.

The following cable entries are available:

•G (PF) 1/2"

•NPT 1/2"

•PG 16

•M 20

Caution!

Please prepare a metal cable gland (not a plastic one) that has shield cable grounding

functionality to meet the condition of EMC certification.

No cable gland is provided with the NMT 539 as standard.

Size and condition of the communication cable must meet the requirements of intrinsically safe

HART communication.

Process connection Converter only version

NMT 539's HART converter can fit onto third party average temperature probes with the following

mechanical connection size and type:

•PF3/4" (equivalent to NPS 3/4") universal coupling.... Housing type 1

•M20 threaded.... housing type 2, specific design to fit to Varec 1700 terminal housing

Note!

Use seal tape to secure the connection between converter and temperature probe.

Please refer to the NMT 539 instruction manual for the detailed installation procedure.

Converter + Temp. , Converter + WB, Converter + Temp. + WB version

All three versions have the same installation method to fit onto the tank nozzle.

The following flange sizes are available:

•JIS 10K 50A RF... mild carbon

•ANSI 150lb 2" RF... mild carbon

•JPI 150lb 2" RF... mild carbon

•DIN DN50 PN 10RF... mild carbon

Different sizes and materials can be provided depending on the installation conditions. Please

consult your Endress+Hauser representative for the most suitable solution.

The installation height

adjuster

An additional feature of the NMT 539, the height adjuster, can be used to adjust installation height

of the NMT 539 within ±180 mm (7") from original height.

Note!

The height adjuster is not included in "Converter only" version.

Caution!

Please tighten the lock nut with seal tape to secure rigidity of the NMT 539 at the end of physical

installation and/or if the height adjuster will be used during operation. A loose lock nut can lead

to improper tank sealing or unexpected leakage into the tank.

WB blocking distance The Water Bottom sensor can be set as low as zero clearance from the tank floor by using height

adjuster. Due to mechanical design of WB sensor, bottom plate has approximately 10mm

thickness. This will become a blocking distance (ineffective measuring range).

Caution!

Calculate vertical movement of NMT 539 installation height prior to setting the WB sensor bottom

clearance. Typical tank shell deformation causes vertical movement at a minimum 20 ~ 30mm

(1"). Excessive weight load of entire NMT 539 on WB sensor by contacting tank floor may cause

critical damage that disables accurate & stable WB level measurement.

Prothermo NMT 539

Endress+Hauser 7

Recommended installation height

Note!

The required bottom clearance of both the temperature probe and WB sensor depends on the

anchoring method. Consider the required bottom clearance when ordering the NMT 539. Please

see the recommended bottom clearance in the above illustration and/or consult your

Endress+Hauser representative for further information.

When ordering the NMT 539 with special element position and bottom clearance, please refer to

"Ordering Information," section 80, Element Spacing. Select 4, Custom element position and

spacing.

The standard location of the lowest temperature element should be set at 500 mm (20") from the

tank bottom regardless of probe type.

The factory setting of the height adjuster is set to the middle of adjustable range. Apply necessary

adjustment during installation for desired height.

Installation equipment The bottom anchor hook on the WB sensor is not available when "A: no installation material" is

selected. The Converter + Temp. probe version includes the bottom anchor hook as standard,

although, "A: no installation material" is selected.

Contents of anchoring hardware: Based on the choice of "100: Mounting attachment"

NMT 539

Ordered installation height:

Below flange to end of

Temp probe or WB sensor

Recommended bottom clearance:

with mounting attachment B & D: 400mm from the tank floor

with mounting attachment A & C: 200mm from the tank floor

Adjusting range

180mm

(total 360mm)

No installation

Material

Anchor weight

(Tall profile)

Anchor weight

(Low profile)

Tension wire +

Top anchor

Converter only

none none none none

Temp. + Converter

bottom hook bottom hook

anchor weight

sling wire

bottom hook

anchor weight

sling wire

bottom hook

base plate

top anchor

tension wire

WB + Converter

none bottom hook

anchor weight

sling wire

bottom hook

anchor weight

sling wire

bottom hook

base plate

top anchor

tension wire

Temp. + WB + Converter

bottom hook

anchor weight

sling wire

bottom hook

anchor weight

sling wire

bottom hook

base plate

top anchor

tension wire

Prothermo NMT 539

8Endress+Hauser

Mounting attachment B: "Tall profile anchor" or D: "Wire hook + Top anchor (tension wire

method)"

Both temperature probe and WB sensor with "Tall profile anchor weight" and "Tension wire anchor"

methods have a recommended clearance below the bottom of the anchor hook of approximately

400 mm (16"). This clearance can be easily changed by turning the height adjuster at the tank top.

Note!

When ordering the NMT 539, please refer to "Ordering Information," section 80, Element Spacing.

Select 4, Custom element position and spacing. This allows you to choose the desired element

position and intervals. Consult with your Endress+Hauser representative for further assistance.

Mounting attachment A: "No installation material" and C: "Low profile anchor"

Both the temperature probe and WB sensor with "Low profile anchor weight" at 100: Mounting

attachment option (see Ordering Information) should have 200 mm (8") of bottom clearance from

the edge of probes.

Caution!

The lowest possible WB measuring point can be approx. 10 mm from the tank floor with "No

installation material" selected (see Ordering Information). If necessary, use the height adjuster to

set at the desired installation height. No bottom anchor hook is available with the WB sensor and

100: Mounting attachment "A: No installation material".

Element position #1

(Bottom element)

Tank floor

500mm

400mm

Clearance below

bottom hook

200mm

500mm

Clearance below

WB sensor

Element position #1

(Bottom element)

Low profile type Anchor Weight

200mm

500mm

Clearance below

WB or Temp sensor

Element position #1

(Bottom element)

Prothermo NMT 539

Endress+Hauser 9

Technical specifications

General specifications

Power supply

Converter specifications

Temperature probe specifications

Manufacturer Endress+Hauser Japan

Designation Prothermo NMT 539

Function RTD average temperature signal to HART conversion

RTD average temperature measurement + HART converter

Capacitance water interface measurement + HART converter

Average temperature & Water interface measurement + HART

converter

Temperature accuracy ±0.1°C or less (at reference condition) *1

Water Bottom accuracy 4mm (±2mm) or better (at reference condition) *2

Input 16 .... 30VDC (via HART line from host gauge)

Power consumption 6mA@16VDC (HART converter only)

6mA@16VDC (Temp. probe + HART converter)

12mA@16VDC (WB sensor + HART converter)

12mA@16VDC (Temp. probe + WB sensor + HART converter)

Compatible element type Pt100, Cu90, Cu100, PtCu100

Housing Aluminum diecast

Process connection PF 3/4" (NPS 3/4") universal coupling

M20 threaded (Varec 1700 connection only)

Cable entry G (PF) 1/2"

NPT 1/2"

PG16

M20

Ambient temperature -40 ...+85 °C (-40 ...+185 °F) (converter housing)

Temperature element Class A Pt100, IEC PUB 751 1983 and / or JIS 1604 1989

Installation height adjuster ±360mm threaded, (SUS 316)

Probe material SUS 316 flexible tube

SUS 316 flexible tube + SUS316 armored mesh .... pending

Operation temperature -200 ...+235 °C (-328 ...+455 °F)

Process connection JIS 10K 50A RF

ANSI 150lb 2" RF

JPI 150lb 50A RF

DIN DN50 PN 10RF

Prothermo NMT 539

10 Endress+Hauser

Water Bottom (capacitance) sensor specifications

Environment

Reference *1

Accuracy of RTD - Temperature conversion. Accuracy measurement shall be conditioned with

precisely calibrated dial resistor or IEC class A Pt100 ohm temperature element.

Reference*2

Measurement condition is based on 80% span of 1m probe in water / air interface at 25°C.

Sensor material SUS 316 (center rod SUS 304 & PFA protected)

Operation range 1m (3.3 ft) and 2m (6.6 ft)

Operation temperature -20 ...+100 °C (-4 ...+212 °F)

Data transmission 2.5mm coaxial cable & common ground

Weather proof IP 65

Explosion proof EEx ia IIB T2 ... T6, ATEX

IS Class 1, Div. 1, Gp. CD .... FM... pending

Class 1, Div. 1, Gp. CD .... CSA

Ex ia IIB T4, TIIS... pending

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