Omega TXUN-FM, TXUN-ST User guide

TM

FM

APPROVED

User’s Guide

Shop online at

omega.com

e-mail: [email protected]

For latest product manuals:

www.omegamanual.info

TXUN-ST/FM

2 Wire Programmable Transmitter

omega.com [email protected]

Servicing North America:

U.S.A. Omega Engineering, Inc.
Headquarters: Toll-Free: 1-800-826-6342 (USA & Canada only)

Customer Service: 1-800-622-2378 (USA & Canada only)
Engineering Service: 1-800-872-9436 (USA & Canada only)
Tel: [phone] Fax: [phone]
e-mail: [email protected]

For Other Locations Visit omega.com/worldwide

The information contained in this document is believed to be correct, but OMEGA accepts no liability for any errors it contains, and reserves
the right to alter specifications without notice.

Table of

Contents

5223 Converter

Table of Contents

Section ........................................................................ Page

Section 1 Warning .......................................................................................... 4

Section 2 Application ................................................................................. 5-6

Section 3 Electrical Specifications ........................................................... 7-9

Section 4 Connections ................................................................................. 10

Section 5 Block Diagram ............................................................................. 11

Section 6 Programming ............................................................................... 12

Section 7 Mechanical Specifications ........................................................ 13

Section 8 Appendix ...................................................................................... 14

Section 9 FM Installation Drawing .................................................... 15-16

Section 10 INMETRO .............................................................................. 17-18

3

Warning

1

Section 1 - 2 Wire Programmable Transmitter TXUN-ST/FM

• RTD, TC, Ohm, or mV input

• Extremely high measurement accuracy

• 1.5 kVAC galvanic isolation

• Programmable sensor error value

• For DIN form B sensor head mounting

• TXUN-FM is the FM approval version of TXUN-ST

Application

• Linearised temperature measurement with Pt100...Pt1000, Ni100...Ni1000, or TC sensor.

• Conversion of linear resistance variation to a standard analogue current signal, for instance from valves or Ohmic

level sensors.

• Amplification of a bipolar mV signal to a standard 4...20 mA current signal.

Technical characteristics

• Within a few seconds the user can program TXUN-ST to measure temperatures within all ranges defined by the norms.

• The RTD and resistance inputs have cable compensation for 2-, 3- and 4-wire connection.

• Continuous check of vital stored data for safety reasons.

Mounting/installation

For DIN form B sensor head mounting. In non-hazardous areas the TXUN-ST can be mounted on a DIN rail.

4

2

Applications

Section - Applications

2-wire installation

in control room

RTD to 4...20 mA

+

+

-

-

TC to 4...20 mA

+

+

+

-

-

-

Resistance to 4...20 mA

+

+

-

-

V

+

mA

2-wire installation

in control room

V+

mA

2-wire installation

in control room

V+

mV to 4...20 mA

+

+

+

-

-

-

mA

2-wire installation

in control room

V+

mA

5

Order: TXUN-ST

Applications

2

Type Version

TXUN-ST Standard

CSA, FM, ATEX,
IECEx & INMETRO

: A

: D

-40°C...+85°C : 3 1500 VAC : B

Ambient

temperature

Electrical specifications
Specifications range:

-40°C to +85°C
Common specifications:
Supply voltage, DC

Standard .......................................... 7.2...35 VDC

CSA, FM, ATEX, IECEx & INMETRO.............. 7.2...30 VDC

Internal power dissipation

Standard .......................................... 25 mW...0.8 W

CSA, FM, ATEX, IECEx & INMETRO.............. 25 mW...0.7 W

Voltage drop .................................... 7.2 VDC

Isolation voltage, test / operation 1.5 kVAC / 50 VAC

Warm-up time ................................. 5 min.

Communications interface ............ Loop Link

Signal / noise ratio ........................ Min. 60 dB

Response time (programmable) ... 1...60 s

EEprom error check ....................... < 3.5 s

Signal dynamics, input .................. 20 bit

Signal dynamics, output ............... 16 bit

Calibration temperature ................ 20...28°C

Accuracy, the greater of general and basic values:

Galvanic
isolation

General values

Input type

All ≤ ±0.05% of span ≤ ±0.01% of span / °C

Input type

RTD ≤ ±0.2°C ≤ ±0.01°C/°C

Lin. R ≤ ±0.1 Ω ≤ ±10 mΩ / °C

Volt ≤ ±10 µV ≤ ±1 µV / °C

TC type:

E, J, K, L, N, T, U ≤ ±1°C ≤ ±0.05°C / °C

TC type: B, R, S,
W3, W5, LR ≤ ±2°C ≤ ±0.2°C / °C

Absolute
accuracy

Basic values

Basic

accuracy

Temperature

coefficient

Temperature

coefficient

6

3

Electrical Specifications

Inputs and Specs

EMC immunity influence ........................ < ±0.5% of span

Extended EMC immunity:

NAMUR NE 21, A criterion, burst ......... < ±1% of span

Effect of supply voltage variation : < 0.005% of span/VDC

Vibration .......................................... IEC 60068-2-6 : 2007

2...25 Hz ................................... ±1.6 mm

25...100 Hz ............................... ±4 g

Max. wire size ................................. 1 x 1.5 mm2 stranded wire

Screw terminal torque ................... 0.4 Nm

Humidity ......................................... < 95% RH (non-cond.)

Dimensions ..................................... Ø 44 x 20.2 mm

Protection degree (enclosure / terminal): IP68/IP00

Weight .............................................. 50 g

Electrical specifications, input:
RTD and linear resistance input:

RTD

type

Pt100
Ni100
Lin. R

Max. offset ....................................... 50% of selec. max. value

Cable resistance per wire (max.) ..5Ω

Sensor current ................................. nom. 0.2 mA

Effect of sensor cable resistance

(3- / 4-wire) .....................................<0.002Ω/Ω

Sensor error detection ................... Yes

Min.

value

-200°C

-60°C
0 Ω

Max.

value

+850°C
+250°C

5000 Ω

Min.
span

25°C
25°C
30 Ω

Standard

IEC 60751

DIN 43760

-----

7

Section 3.1 - TC Input

TC input:

Type

B
E

J
K
L

N
R

S
T

U
W3
W5

LR

Max. offset ....................................... 50% of selec. max. value

Cold junction compensation ......... < ±1.0°C

Sensor error detection .................... Yes

Sensor error current:

When detecting ........................... Nom. 33 mA

Else ................................................ 0 mA

Voltage input:

Measurement range ....................... -12...800 mV

Min. span ......................................... 5 mV

Max. offset ....................................... 50% of selec. max. value

Input resistance .............................. 10 MΩ

Output:
Current output:

Signal range..................................... 4...20 mA

Min. signal range ............................ 16 mA

Updating time ................................. 440 ms

Output signal at EEprom error .... ≤ 3.5 mA

Load resistance ............................... ≤ (V

Load stability .................................. < ±0.01% of span / 100 Ω

Sensor error detection:

Programmable ................................ 3.5...23 mA

Namur NE43 Upscale .................... 23 mA

Namur NE43 Downscale .............. 3.5 mA

Min.

temperature

+400°C

-100°C

-100°C

-180°C

-100°C

-180°C

-50°C

-50°C

-200°C

-200°C
0°C
0°C

-200°C

Max.

temperature

+1820°C
+1000°C
+1200°C
+1372°C

+900°C
+1300°C
+1760°C
+1760°C

+400°C

+600°C
+2300°C
+2300°C

+800°C

supply

Min.
span Standard

100°C

50°C
50°C
50°C
50°C

50°C
100°C
100°C

50°C

50°C
100°C
100°C

50°C

- 7.2) / 0.023 [Ω]

Electrical specifications

IEC584
IEC584
IEC584
IEC584

DIN 43710

IEC584
IEC584
IEC584
IEC584

DIN 43710
ASTM E988-90
ASTM E988-90
GOST 3044-84

3

Of span = Of the presently selected range

8

Electrical Specifications

3

Approvals:

EMC ................................................. 2014/30/EU

CCOE ............................................... P337392/1

RoHS ................................................ 2011/65/EU

EAC .................................................. TR-CU 020/2011

FM certificate .................................. FM17US0013X

9

Section 4 - Connections

Connections 4

Input :

RTD, 2-wire RTD, 3-wire RTD, 4-wire

3

4

TC, external CJC mV

3

4

-

Resistance, 4-wire

3

4

+

65 3

65

65

4

3

4

-

65 3

65

+

4

Resistance, 2-wire Resistance, 3-wire

3

4

TC, internal CJC

65 3

65 3

4

-

4

65

+

65

Output :

2-wire installation

12

+

mA

10

-

mV

+

mV

5

Block Diagram

Section 5 - Block Diagram

Forsynin g +

7,2...3 5 VDC

RTD,

4

- tråd

3

lin. R

2

Ext.

CJC

TC

4 mA

6

5

+

-

-

Int.

CJC

MU X

PGA

CPU

A / D

Com

4

3

Indgang gnd.

EEPROM

D / A

0...16
mA

TXUN-ST/FM

1

2

Forsyning -

mA

4...20 mA

11

Programming

Section 6 - Programming

• Loop Link is a communications interface that is needed for programming TXUN-ST/FM.

• For programming please refer to the drawing below and the help functions in OMset.

• Loop link is not approved for communication with modules installed in harzardous (Ex) areas.

Disconnec t

1

Yellow

*

*

Green

TXUN-ST/FM

5331

2

Red

Black

6

Receiving

Equipment

+Vsuppl y

Input

l

i

F

o

r

P

e

e

at

D

a

i

r

e

S

n

ag

T

al

n

A

t

u

p

n

I

t

u

p

n

I

n

n

o

C

d

l

o

C

p

s

e

R

t

u

p

n

I

t

c

u

d

:

:

o

n

l

:

o

Omega Engineering

t

u

p

n

i

g

o

:

e

yp

t

:

e

g

an

r

:

n

i

o

ct

e

m

o

c

n

i

o

t

c

n

u

j

:

e

i

m

t

se

n

o

Stikfor-

bindelse

0

0

:

0

3

:

8

0

n

o

t

i

p

O

e

ag

u

g

n

a

L

n

o

i

at

c

i

n

u

m

m

o

C

t

u

t

p

u

O

TXUN-ST/FM

0

1

-

-

8

4

0

0

2

4

9

5

1

0

2

3

4

0

0

0

1

t

P

5

-

0

0

.

0

e

r

i

w

-

3

-

-

-

-

-

-

:

p

s

0

0

.

1

t

u

p

t

u

o

g

o

al

n

A

A

m

0

2

-

4

:

e

p

y

t

t

u

p

t

u

O

C

E

/

I

I

N

D

S

C

0

0

.

0

c

e

e

al

c

s

p

U

:

r

o

r

r

e

r

o

s

n

e

Lo op

TXUN-KIT

Link

* Connected only for
on-line programming

12

7

Mechanical Specifications

Section 7 - Mechanical Specifications

Mechanical specifications

+

+

33 mm

ø 44

-

ø 6

Mounting of sensor wires

-

20.2 mm

13

Wires must be mounted between the
metal plates.

Appendix

APPENDIX

FM INSTALLATION DRAWING - TXUN-FM

INMETRO INSTRUÇÕES DE SEGURANÇA - TXUN-ST

INMETRO INSTRUÇÕES DE SEGURANÇA - TXUN-FM

8

14

9

5300Q502

LERBAKKEN 10, 8410 RØNDE DENMARK. WWW.PRELECTRONICS.COM

FM Installation Drawing

FM Installation Drawing TXUN-FM

Section 9

- FM Installation Drawin

g TXUN-FM

Model TXUN-FM

Hazardous (Classified) Locaon

Class I,Division1, Groups, A,B,C,D T4..T6
Class I, Zone 0, AEx ia IIC T4..T6

Ambient temperature limits
T4: -40 to + 85 deg. Celcius
T6: -40 to + 60 deg. Celcius

Terminal 1 , 2
Vmax or Ui: 30 V
Imax or Ii: 120 mA
Pmax or Pi: 0.84 W
Ci: 1 nF
Li:10 uH

Terminal 3,4,5,6
Vt or Uo: 9.6 V
It or Io: 28 mA
Pt or Po: 67.2 mW
Ca or Co: 3.5 uF
La or Lo: 35 mH

1

6

SENSOR

2

3

45

Hazardous Locaon

Associated Apparatus

+

-

or Barrier

entity Parameters:

UM < 250V
Voc or Uo < Vmax or Ui
Isc or Io < Imax or Ii
Po < Pi
Ca or Co > Ci + Ccable
La or Lo > Li + Lcable

This device must not be connected
to any associated apparatus which
uses or generates more than 250
VRMS

with

Hazardous

Temperature limits
T4: -40 to + 85 deg. Celcius
T6: -40 to + 60 deg.

15

+

-

Locaon

uses or generates more than 250
VRMS

5300Q502

LERBAKKEN 10, 8410 RØNDE DENMARK. WWW.PRELECTRONICS.COM

Section 9 - Q502

Q502

9

The entity concept

The Transmitter must be installed according to National Electrical Code (ANSI-NFPA 70) and shall be
installed with the enclosure, mounting, and spacing segregation requirement of the ultimate application.

Equipment that is FM-approved for intrinsic safety may be connected to barriers based on the ENTITY
CONCEPT. This concept permits interconnection of approved transmitters, meters and other devices in
combinations which have not been specifically examined by FM, provided that the agency's criteria are
met. The combination is then intrinsically safe, if the entity concept is acceptable to the authority having
jurisdiction over the installation.

The entity concept criteria are as follows:

The intrinsically safe devices, other than barriers, must not be a source of power.

The maximum voltage Ui(V

) and current Ii(I

MAX

receive and remain intrinsically safe, must be equal to or greater than the voltage (Uo or V
current (Io or I

or It) and the power Po which can be delivered by the barrier.

SC

The sum of the maximum unprotected capacitance (C
ing wiring must be less than the capacitance (C

The sum of the maximum unprotected inductance (L
wiring must be less than the inductance (L

he entity para

T

meters Uo,VOC or Vt and Io,ISC or It, and Ca and La for barriers are provided by the barrier

a

), and maximum power Pi(Pmax), which the device can

MAX

OC

) for each intrinsically device and the interconnect-

i

) which can be safely connected to the barrier.

a

) for each intrinsically device and the interconnecting

i

) which can be safely connected to the barrier.

or Vt) and

manufacturer.

NI Field Circuit Parameters

Model TXUN-FM

Hazardous (Classified) Locaon

Class I,Division2, Groups, A,B,C,D T4..T6
Class I, Zone 2, IIC T4..T6

Ambient temperature limits
T4: -40 to + 85 deg. Celcius
T6: -40 to + 60 deg. Celcius

Terminal 1 , 2
Vmax : 35 V
Ci: 1.0 nF
Li:10 uH

Non Hazardous Locaon

Associated Apparatus

+

-

1

6

SENSOR

2

3

45

or Barrier

This device must not be connected
to any associated apparatus which
uses or generates more than 250
VRMS

16

10

5331QB01

LERBAKKEN 10, 8410 RØNDE DENMARK. WWW.PRELECTRONICS.COM

Desenho de Instalação INMETRO

INMETRO TXUN-ST/FM

Section 10

- INMETRO

Para instalação segura do TXUN-ST/FM o seguinte deve ser ob servado. O modelo deve apenas
ser instalado por pessoas qualificadas que são familiarizadas com as leis nacionais e
internacionais, diretrizes e padrões que se aplicam a esta área.
O ano de fabricação pode ser pego dos dois primeiros dígitos do número de série.

Certificado …

Marcas

Normas ABNT NBR IEC 60079-0: 2013; ABNT NBR IEC 60079-11: 2013

Áreas classificadas
Zona 0, 1, 2, 20, 21, 22,

………DEKRA 16.0013 X

Ex ia IIC T6…T4 Ga
Ex ia IIIC Da

Área não classificada

T4: -40 ≤ Ta ≤ 85ºC
T5: -40 ≤ Ta ≤ 60ºC
T6: -40 ≤ Ta ≤ 45ºC

Terminais 3,4,5,6

Uo: 9,6 VDC
Io: 25 mA
Po: 60 mW
Lo: 33 mH
Co: 2,4μF

6

5

4

3

TXUN-ST/FM

Terminais:
1,2

Ui: 30 VDC
Ii: 120 mA
Pi: 0,84 W

Li: 10μH

Ci: 1,0nF

+

1

-

2

Barrier

17

TXUN-FM

5331QB01

LERBAKKEN 10, 8410 RØNDE DENMARK. WWW.PRELECTRONICS.COM

Section 10 - TXUN-FM

Notas de instalação

O circuito do sensor não é isolado galvanicamente do circuito de entrada de forma infalível.
Contudo, a isolação galvânica entre os circuitos é capaz de resistir a um ensaio de tensão de
500Vac durante 1 minuto.

Em uma atmosfera de gás potencialmente explosiva, o transmissor deve ser montado em um
invólucro a fim de garantir um grau de proteção de no mínimo IP20 de acordo com a ABNT
NBR IEC60529. Se contudo, o ambiente necessitar de um nível de proteção maior, isso deve
ser levado em consideração.

Se o transmissor é instalado em uma atmosfera explosiva exigindo o uso de equipamento de
proteção de nível Ga e se o invólucro é feito de alumínio, ele deve ser instalado de modo que,
mesmo em caso remoto de avaria, fontes de ignição devido ao impacto e fricção, faíscas são
eliminadas.

Se o invólucro é feito de materiais não metálicos, cargas eletroestáticas devem ser evitadas.

10

Para instalação em atmosfera de poeira potencialmente explosiva, as instruções a seguir são
aplicáveis:

O transmissor deve ser montado em invólucro de metal forma B de acordo com DIN43729 que
está fornecendo um grau de proteção de pelo menos IP6X de acordo com ABNT NBR
IEC60529. O invólucro deve ser adequado para aplicação pretendida e instalado
corretamente.

As entradas dos cabos e os elementos de obturação que podem ser utilizados devem ser
adequados à aplicação pretendida e corretamente instalados.

Para temperatura ambiente >= 60ºC, fios de resistência ao calor devem ser usados com uma
faixa de pelo menos 20K acima da temperatura ambiente.

A temperatura da superfície do invólucro é igual à temperatura ambiente mais 20 K, por uma
camada de pó, com espessura de até 5 mm.

18

WARRANTY/DISCLAIMER

OMEGA ENGINEERING, INC. warrants this unit to be free of defects in materials and workmanship for a
period of 13 months from date of purchase. OMEGA’s WARRANTY adds an additional one (1) month grace
period to the normal one (1) year product warranty to cover handling and shipping time. This ensures
that OMEGA’s customers receive maximum coverage on each product.

If the unit malfunctions, it must be returned to the factory for evaluation. OMEGA’s Customer Service
Department will issue an Authorized Return (AR) number immediately upon phone or written request.
Upon examination by OMEGA, if the unit is found to be defective, it will be repaired or replaced at no
charge. OMEGA’s WARRANTY does not apply to defects resulting from any action of the purchaser,
including but not limited to mishandling, improper interfacing, operation outside of design limits,
improper repair, or unauthorized modification. This WARRANTY is VOID if the unit shows evidence of
having been tampered with or shows evidence of having been damaged as a result of excessive corrosion;
or current, heat, moisture or vibration; improper specification; misapplication; misuse or other operating
conditions outside of OMEGA’s control. Components in which wear is not warranted, include but are not
limited to contact points, fuses, and triacs.

OMEGA is pleased to offer suggestions on the use of its various products. However,
OMEGA neither assumes responsibility for any omissions or errors nor assumes liability for
any damages that result from the use of its products in accordance with information provided
by OMEGA, either verbal or written. OMEGA warrants only that the parts manufactured by the
company will be as specified and free of defects. OMEGA MAKES NO OTHER WARRANTIES OR
REPRESENTATIONS OF ANY KIND WHATSOEVER, EXPRESSED OR IMPLIED, EXCEPT THAT OF
TITLE, AND ALL IMPLIED WARRANTIES INCLUDING ANY WARRANTY OF MERCHANTABILITY
AND FITNESS FOR A PARTICULAR PURPOSE ARE HEREBY DISCLAIMED. LIMITATION OF
LIABILITY: The remedies of purchaser set forth herein are exclusive, and the total liability of
OMEGA with respect to this order, whether based on contract, warranty, negligence,
indemnification, strict liability or otherwise, shall not exceed the purchase price of the
component upon which liability is based. In no event shall OMEGA be liable for
consequential, incidental or special damages.

CONDITIONS: Equipment sold by OMEGA is not intended to be used, nor shall it be used: (1) as a “Basic
Component” under 10 CFR 21 (NRC), used in or with any nuclear installation or activity; or (2) in medical
applications or used on humans. Should any Product(s) be used in or with any nuclear installation or
activity, medical application, used on humans, or misused in any way, OMEGA assumes no responsibility
as set forth in our basic WARRANTY/DISCLAIMER language, and, additionally, purchaser will indemnify
OMEGA and hold OMEGA harmless from any liability or damage whatsoever arising out of the use of the
Product(s) in such a manner.

RETURN REQUESTS/INQUIRIES

Direct all warranty and repair requests/inquiries to the OMEGA Customer Service Department. BEFORE
RETURNING ANY PRODUCT(S) TO OMEGA, PURCHASER MUST OBTAIN AN AUTHORIZED RETURN (AR)
NUMBER FROM OMEGA’S CUSTOMER SERVICE DEPARTMENT (IN ORDER TO AVOID PROCESSING
DELAYS). The assigned AR number should then be marked on the outside of the return package and on any
correspondence.

The purchaser is responsible for shipping charges, freight, insurance and proper packaging to prevent
breakage in transit.

FOR WARRANTY RETURNS, please have the
following information available BEFORE contacting
OMEGA:

1. Purchase Order number under which the product
was PURCHASED,

2. Model and serial number of the product under
warranty, and

3. Repair instructions and/or specific problems
relative to the product.

OMEGA’s policy is to make running changes, not model changes, whenever an improvement is possible. This affords our
customers the latest in technology and engineering.

OMEGA is a trademark of OMEGA ENGINEERING, INC.
© Copyright 2018 OMEGA ENGINEERING, INC. All rights reserved. This document may not be copied, photocopied,

reproduced, translated, or reduced to any electronic medium or machine-readable form, in whole or in part, without the prior
written consent of OMEGA ENGINEERING, INC.

FOR NON-WARRANTY REPAIRS, consult
OMEGA for current repair charges. Have
the following information available BEFORE
contacting OMEGA:

1. Purchase Order number to cover the COST
of the repair,

2. Model and serial number of the product, and

3. Repair instructions and/or specific problems
relative to the product.

Where Do I Find Everything I Need for

Process Measurement and Control?

OMEGA…Of Course!

Shop online at omega.com

TEMPERATURE

MU

Thermocouple, RTD & Thermistor Probes, Connectors,

Panels & Assemblies

MU

Wire: Thermocouple, RTD & Thermistor

MU

Calibrators & Ice Point References

MU

Recorders, Controllers & Process Monitors

MU

Infrared Pyrometers

PRESSURE, STRAIN AND FORCE

MU

Transducers & Strain Gages

MU

Load Cells & Pressure Gages

MU

Displacement Transducers

MU

Instrumentation & Accessories

FLOW/LEVEL

MU

Rotameters, Gas Mass Flowmeters & Flow Computers

MU

Air Velocity Indicators

MU

Turbine/Paddlewheel Systems

MU

Totalizers & Batch Controllers

pH/CONDUCTIVITY

MU

pH Electrodes, Testers & Accessories

MU

Benchtop/Laboratory Meters

MU

Controllers, Calibrators, Simulators & Pumps

MU

Industrial pH & Conductivity Equipment

DATA ACQUISITION

MU

Communications-Based Acquisition Systems

MU

Data Logging Systems

MU

Wireless Sensors, Transmitters, & Receivers

MU

Signal Conditioners

MU

Data Acquisition Software

HEATERS

MU

Heating Cable

MU

Cartridge & Strip Heaters

MU

Immersion & Band Heaters

MU

Flexible Heaters

MU

Laboratory Heaters

ENVIRONMENTAL
MONITORING AND CONTROL

MU

Metering & Control Instrumentation

MU

Refractometers

MU

Pumps & Tubing

MU

Air, Soil & Water Monitors

MU

Industrial Water & Wastewater Treatment

MU

pH, Conductivity & Dissolved Oxygen Instruments

M5694/11

18