Raytek RAYTXSHTSF, RAYTXSLTCF1, RAYTXSLTCF2, RAYTXSLTPSF, RAYTXSLTSF User manual

TX

Infrared Sensor

Operating Instructions

Rev. O8 01/2019

50501

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WARRANTY

The manufacturer warrants this product to be free from defects in material and workmanship under normal use
and service for a period of two years from date of purchase except as hereinafter provided. This warranty extends
only to the original purchaser. This warranty shall not apply to fuses or batteries. Factory calibration is warranted
for a period of one year. The warranty shall not apply to any product which has been subject to misuse, neglect,
accident, or abnormal conditions of operation or storage. Should the manufacturer be unable to repair or replace

the product within a reasonable amount of time, purchaser’s exclusive remedy shall be a refund of the purchase

price upon return of the product.
In the event of failure of a product covered by this warranty, the manufacturer will repair the instrument when it
is returned by the purchaser, freight prepaid, to an authorized Service Facility within the applicable warranty

period, provided the manufacturer’s examination discloses to its satisfaction that the product was defective. The

manufacturer may, at its option, replace the product in lieu of repair. With regard to any covered product returned
within the applicable warranty period, repairs or replacement will be made without charge and with return freight
paid by the manufacturer, unless the failure was caused by misuse, neglect, accident, or abnormal conditions of
operation or storage, in which case repairs will be billed at a reasonable cost. In such a case, an estimate will be
submitted before work is started, if requested.

THE FOREGOING WARRANTY IS IN LIEU OF ALL OTHER WARRANTIES, EXPRESSED OR IMPLIED,
INCLUDING BUT NOT LIMITED TO ANY IMPLIED WARRANTY OF MERCHANTABILITY, FITNESS, OR
ADEQUACY FOR ANY PARTICULAR PURPOSE OR USE. THE MANUFACTURER SHALL NOT BE LIABLE
FOR ANY SPECIAL, INCIDENTAL OR CONSEQUENTIAL DAMAGES, WHETHER IN CONTRACT, TORT,
OR OTHERWISE.

SOFTWARE WARRANTY

The manufacturer does not warrant that the software described herein will function properly in every hardware
and software environment. This software may not work in combination with modified or emulated versions of
Windows operating environments, memory-resident software, or on computers with inadequate memory. The
manufacturer warrants that the program disk is free from defects in material and workmanship, assuming normal
use, for a period of one year. Except for this warranty, the manufacturer makes no warranty or representation,
either expressed or implied, with respect to this software or documentation, including its quality, performance,

merchantability, or fitness for a particular purpose. As a result, this software and documentation are licensed “as
is,” and the licensee (i.e., the User) assumes the entire risk as to its quality and performance. The liability of the

manufacturer under this warranty shall be limited to the amount paid by the User. In no event shall the
manufacturer be liable for any costs including but not limited to those incurred as a result of lost profits or revenue,
loss of use of the computer software, loss of data, the cost of substitute software, claims by third parties, or for other
similar costs. The manufacturer’s software and documentation are copyrighted with all rights reserved. It is illegal
to make copies for another person.

Specifications subject to change without notice.

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COMPLIANCE STATEMENT

The device complies with the requirements of the European Directives:

EC – Directive 2014/30/EU – EMC

EC – Directive 2011/65/EU – RoHS II

EC – Directive 2014/34/EU – ATEX

valid for device: xxxTXxxxxxIS4, xxxTXxxxxxIS4W, xxxTXxxxxxIS5,
xxxTXxxxxxIS5W

Electromagnetic Compatibility Applies to use in Korea only. Class A
Equipment (Industrial Broadcasting & Communication Equipment)

This product meets requirements for industrial (Class A) electromagnetic wave equipment and
the seller or user should take notice of it. This equipment is intended for use in business
environments and is not to be used in homes.

EN 61326-1: 2013 Electrical measurement, control and laboratory devices -

Electromagnetic susceptibility (EMC)

EN 50581: 2012 Technical documentation for the evaluation of electrical products with respect

to restriction of hazardous substances (RoHS)

EN 60079-0: 2012 Risk of explosion – part 0: general requirements (ATEX)

EN 60079-11: 2012 Risk of explosion – part 11: device protection by intrinsic safety “I” (ATEX)

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Content

COMPLIANCE STATEMENT .......................................................................................................................... 5

CONTENT ............................................................................................................................................................ 6

1 SAFETY INSTRUCTIONS ............................................................................................................................. 8

2 TECHNICAL DATA ........................................................................................................................................ 9

2.1 MODELS AND PARAMETERS ......................................................................................................................... 9

2.2 OPTICAL DIAGRAMS .................................................................................................................................. 10

2.3 SCOPE OF DELIVERY ................................................................................................................................... 12

3 BASICS ............................................................................................................................................................. 13

3.1 MEASUREMENT OF INFRARED TEMPERATURE .......................................................................................... 13

3.2 DISTANCE AND SPOT SIZE ......................................................................................................................... 13

3.3 AMBIENT TEMPERATURE ........................................................................................................................... 13

3.4 ATMOSPHERIC QUALITY ............................................................................................................................ 14

3.5 ELECTRICAL INTERFERENCE ...................................................................................................................... 14

3.6 EMISSIVITY OF TARGET OBJECT.................................................................................................................. 14

4 INSTALLATION ............................................................................................................................................ 15

4.1 WIRE PARAMETERS FOR CURRENT LOOP .................................................................................................. 15

4.2 DIMENSIONS OF SENSOR ............................................................................................................................ 16

4.2.1 Fixed Brackets ..................................................................................................................................... 16

4.3 CONNECTING THE SIGNAL LINE ................................................................................................................ 16

4.4 BASIC MODEL ............................................................................................................................................. 19

4.4.1 Installation with a Controller ............................................................................................................. 19

4.5 SMART MODEL ........................................................................................................................................... 19

4.5.1 HART Protocol ................................................................................................................................... 19

4.5.2 HART/RS232 Adapter ....................................................................................................................... 20

4.5.3 Installation of Smart Model ................................................................................................................ 20

4.5.4 Address Assignment for Multiple Sensors ......................................................................................... 21

4.5.5 Installation of Multiple Sensors (digital, address mode) .................................................................... 22

4.5.6 Installation of Multiple Sensors (digital and analog, address mode) .................................................. 23

4.5.7 Installation of Multiple Sensors (digital and analog, tag mode) ........................................................ 23

4.5.8 Alarm Output ..................................................................................................................................... 24

5 OPTIONS ......................................................................................................................................................... 25

5.1 AIR/WATER-COOLED HOUSING ................................................................................................................ 25

5.1.1 Connecting .......................................................................................................................................... 26

5.1.2 Avoidance of Condensation ................................................................................................................ 26

5.2 ATEX INTRINSIC SAFETY ........................................................................................................................... 28

5.2.1 Power Supply Barrier – Variant 1 ...................................................................................................... 29

5.2.2 Power Supply Barrier – Variant 2 ...................................................................................................... 30

6 ACCESSORIES ............................................................................................................................................... 31

6.1 OVERVIEW .................................................................................................................................................. 31

6.2 ADJUSTABLE BRACKET ............................................................................................................................... 32

6.3 AIR PURGE COLLAR ................................................................................................................................... 32

6.4 RIGHT ANGLE MIRROR .............................................................................................................................. 32

6.5 SIGHTING VIEWER ...................................................................................................................................... 33

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6.6 PIPE ADAPTER ............................................................................................................................................. 33

6.7 ADJUSTABLE PIPE ADAPTER ....................................................................................................................... 34

6.8 THERMOJACKET .......................................................................................................................................... 34

6.9 INDUSTRIAL POWER SUPPLY ...................................................................................................................... 36

6.10 PROTECTIVE WINDOW .............................................................................................................................. 37

6.11 USB/RS232 ADAPTER .............................................................................................................................. 38

7 SOFTWARE ..................................................................................................................................................... 39

7.1 REQUIREMENTS ........................................................................................................................................... 39

7.2 INSTALLATION AND START ........................................................................................................................ 39

7.3 SENSOR SETUP............................................................................................................................................. 40

8 MAINTENANCE ............................................................................................................................................ 41

8.1 TROUBLESHOOTING MINOR PROBLEMS ..................................................................................................... 41

8.2 AUTOMATIC ERROR INDICATION ............................................................................................................... 41

8.3 CLEANING THE LENS .................................................................................................................................. 42

8.4 REPLACING A PROTECTIVE WINDOW ........................................................................................................ 42

8.4.1 Models produced after May 1999 ........................................................................................................ 42

8.4.2 Models produced before May 1999 ...................................................................................................... 43

9 APPENDIX ....................................................................................................................................................... 44

9.1 DETERMINATION OF EMISSIVITY ................................................................................................................ 44

9.2 TYPICAL EMISSIVITY VALUES ..................................................................................................................... 44

9.3 DISPLAY MONITOR ..................................................................................................................................... 48

9.3.1 Installation with the Sensor ................................................................................................................ 48

9.4 ATEX CERTIFICATE OF CONFORMITY ........................................................................................................ 49

NOTES

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Safety Instructions

Disposal of old instruments should be handled according to professional and
environmental regulations as electronic waste.

Helpful information regarding the optimal use of the instrument.

Warnings concerning operation to avoid instrument damage and personal injury.

Incorrect use of 110 / 230 V electrical systems can result in electrical hazards and personal
injury. All instrument parts supplied with electricity must be covered to prevent physical
contact and other hazards at all times.

For ATEX certified units comply with the installation and safety instructions for electrical
equipment in potentially explosive atmospheres.

1 Safety Instructions

This document contains important information, which should be kept at all times with the instrument
during its operational life. Other users of this instrument should be given these instructions with the
instrument. Eventual updates to this information must be added to the original document. The
instrument can only be operated by trained personnel in accordance with these instructions and local
safety regulations.

Acceptable Operation

This instrument is intended only for the measurement of temperature. The instrument is appropriate
for continuous use. The instrument operates reliably in demanding conditions, such as in high
environmental temperatures, as long as the documented technical specifications for all instrument
components are adhered to. Compliance with the operating instructions is necessary to ensure the
expected results.

Unacceptable Operation

The instrument should not be used for medical diagnosis.

Replacement Parts and Accessories

Use only original parts and accessories approved by the manufacturer. The use of other products can
compromise the operation safety and functionality of the instrument.

Instrument Disposal

Operating Instructions

The following symbols are used to highlight essential safety information in the operation instructions:

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Technical Data

2 Technical Data

2.1 Models and Parameters

In general, there are two models available. The basic model (TXC, for °C, and TXF, for °F) and the Smart model (TXS).
The model descriptor is followed by the description for the optical characteristic, see following page):

Optical characteristic LTPSF LTSF MTSF G5SF (Glass) P7SF (Plastics) HTSF

Temperature range (°C) - 18 to 500 - 18 to 500 200 to 1000 250 to 1650 10 to 360 500 to 2000
Temperature range (°F) 0 to 1000 0 to 1000 400 to 1800 500 to 3000 50 to 650 950 to 3600
Optical resolution (90%) 15 : 1 33 : 1 33 : 1 33 : 1 33 : 1 60 : 1
Spectral response (µm) 8 to 14 8 to 14 3.9 5.0 7.9 2.2
Close focus CF CF1, CF2 CF1, CF2 CF1, CF2

Thermal Parameters

Accuracy ± 1 % of reading or ± 1.4°C (2.5°F), whichever is greater

(at 23°C ± 5°C (73°F ± 9°F) ambient temperature)
Repeatability ± 0.5 % of reading or ± 0.7°C, whichever is greater
Detector Micromachined Thermopile
Response time (95 %) 165 ms (100 ms HT models)
Temperature resolution (NET) 0.1 K (LT models), 1K (all other models)
Emissivity 0.10 to 1.00 (all models)

Electrical Parameters

Output 4 to 20 mA
Maximum loop impedance 750 Ohm
Alarm 24 V / 150 mA (only Smart models)
Signal processing
Smart models °C/°F, Averaging, Peak/Valley Hold,
Emissivity, internal housing temperature, external ambient temperature
Basic model Emissivity
Power 24 VDC ± 10 %, max. 21 mA, if HART communication is required,
otherwise 12 to 24 VDC +20 %

General Parameters

Environmental rating IP 65, IEC 529, NEMA 4
Ambient operating range without cooling 0 to 70°C (32 to 160°F)
with air cooling max. 120°C (250°F)
with water cooling max. 175°C (350°F)
with ThermoJacket max. 315°C (600°F)
Storage temperature - 18°C to 85°C (0 to 185°F)
Relative Humidity 10% to 95% non-condensing
Vibration IEC 68-2-6 (MIL STD 810D), 3 axis, 11 to 200 Hz, 3 G
Shock IEC 68-2-27 (MIL STD 810D), 3 axis, 11 ms, 50 G
Dimensions / Weight Sensor L: 187 mm; Ø: 42 mm / 330 g (Length 7.36 inches, dia 1.65 inches)
with water cooling L: 187 mm; Ø: 60 mm / 595 g (Length 7.36 inches, dia 2.36 inches)

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Technical Data

Target Spot Diameter

(S) and Measuring

Distance (D) in Close

Focus in inches

Target Spot Diameter S (in)

Distance D (in)

Target Spot Diameter

(S) and Measuring

Distance (D) in Close

Focus in mm

Target Spot Diameter S (mm)

Distance D (mm)

Distance between Sensor and Object [in]

Distance between Sensor and Object [mm]

Close Focus D : S = Proportion between Distance (D) to Target Spot

and Target Spot Diameter (S) in Close Focus

Far Field D : S = Proportion with Distances 10 times greater than the

Close Focus Distance

Calculating the Target Spot Size

To calculate the target spot size from two known points within an
optical diagram the following formula can be used:

 
 

 



















nf

nf

nx

nx

SS

DD

DD

SS

Sx = unknown diameter of target spot
Sn = smallest known diameter of target spot
Sf = greatest known diameter of target spot
Dx = distance to unknown target spot
Dn = distance to smaller known target spot
Df = distance to greater known target spot

2.2 Optical Diagrams

The optical diagrams indicate the target spot diameter at any given distance between the target object
and the sensing head.
All target spot sizes indicated in the optical diagrams are based on 90% energy.

Figure 1: How to read the optical diagrams

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Technical Data

Plastic Lens, Standard Focus SF

Plastic Lens, Close Focus CF

Low and Medium Temperature Ranges,

G5 (Glass), P7 (Plastic), Standard Focus SF

Low and Medium Temperature Ranges,

High Resolution, Close Focus CF1

Low and Medium Temperature Ranges,

High Resolution, Close Focus CF2

High Temperature, Standard Focus SF

High Temperature, Close Focus CF1

High Temperature, Close Focus CF2

LTSF, MTSF,
G5SF, P7SF

LTPSF

LTPCF1

LTCF1, MTCF1

HTSF

HTCF2

HTCF1

* Focus Point D:S = 15:1 Far Field D:S = 14:1

Distance D Sensor to Object [in]

Distance D Sensor to Object [mm]

Spot Dia. [mm]

Spot Dia. [in]

* Focus Point D:S = 7:1 Far Field D:S = 4:1

Distance D Sensor to Object [in]

Distance D Sensor to Object [mm]

Spot Dia. [mm]

Spot Dia. [in]

* Focus Point D:S = 33:1 Far Field D:S = 30:1

Distance D Sensor to Object [in]

Distance D Sensor to Object [mm]

Spot Dia. [mm]

Spot Dia. [in]

* Focus Point D:S = 30:1 Far Field D:S = 5:1

Distance D Sensor to Object [in]

Distance D Sensor to Object [mm]

Spot Dia. [mm]

Spot Dia. [in]

* Focus Point D:S = 32:1 Far Field D:S = 10:1

Distance D Sensor to Object [in]

Distance D Sensor to Object [mm]

Spot Dia. [mm]

Spot Dia. [in]

* Focus Point D:S = 60:1 Far Field D:S = 42:1

Distance D Sensor to Object [in]

Distance D Sensor to Object [mm]

Spot Dia. [mm]

Spot Dia. [in]

* Focus Point D:S = 60:1 Far Field D:S = 7:1

Distance D Sensor to Object [in]

Distance D Sensor to Object [mm]

Spot Dia. [mm]

Spot Dia. [in]

* Focus Point D:S = 60:1 Far Field D:S = 14:1

Distance D Sensor to Object [in]

Distance D Sensor to Object [mm]

Spot Dia. [mm]

Spot Dia. [in]

Figure 2: Optical Diagrams

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Technical Data

2.3 Scope of Delivery

All models are provided with:

• operator´s manual

• a fixed bracket

• mounting nut

• models have 4 to 20 mA output

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Basics

Target greater than spot size

Target greater equal to spot size

Target smaller than spot size

Background

3 Basics

3.1 Measurement of Infrared Temperature

Everything emits an amount of infrared radiation according to its surface temperature. The intensity of
the infrared radiation changes according to the temperature of the object. Depending on the material
and surface properties, the emitted radiation lies in a wavelength spectrum of approximately 1 to 20

µm. The intensity of the infrared radiation (”heat radiation”) is dependent on the material. For many

substances this material-dependent constant is known. It is referred to as ”emissivity value”, see
appendix see section 9.2 Typical Emissivity Values, page 44.
Infrared thermometers are optical-electronic sensors. These sensors are able to detect ”radiation of
heat”. Infrared thermometers are made up of a lens, a spectral filter, a sensor, and an electronic signal
processing unit. The task of the spectral filter is to select the wavelength spectrum of interest. The sensor
converts the infrared radiation into an electrical parameter. The connected electronics generate electrical
signals for further analysis. As the intensity of the emitted infrared radiation is dependent on the
material, the required emissivity can be selected on the sensor.
The biggest advantage of the infrared thermometer is its ability to measure in the absence of contact.
Consequently, surface temperatures of moving or hard to reach objects can easily be measured.

3.2 Distance and Spot Size

The desired spot size on the target will determine the maximum measurement distance and the
necessary focus length of the optical module. To avoid erroneous readings the target spot size must
contain the entire field of view of the sensor. Consequently, the sensor must be positioned so the field
of view is the same as or smaller than the desired target size. For a list indicating the available focus
models and their parameters see Figure 2: Optical Diagrams on page 11.

Figure 3: Proper Sensor Placement

3.3 Ambient Temperature

The sensing head is designed for measurements in ambient temperatures between 0°C and 70°C (32 to
160°F). In ambient conditions above 70°C (160°F), a water or air cooled housing is available to extend
the operating range to 120°C (250°F) with air cooling and to 175°C (350°F) with water cooling. When
using the water cooled housing, it is strongly recommended to use the supplied air purge collar to avoid
condensation on the lens. In ambient conditions up to 315°C (600°F), the ThermoJacket housing should
be used.

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Basics

3.4 Atmospheric Quality

In order to prevent damage to the lens and erroneous readings, the lens should always be protected
from dust, smoke, fumes, and other contaminants. For this purpose an air purge collar is available. You
should only use oil free, clean “instrument“ air.

3.5 Electrical Interference

To minimize electrical or electromagnetic interference, follow these precautions:

• Mount the sensor as far away as possible from possible sources of interference such as

motorized equipment producing large step load changes.

• Ensure a fully insulated installation of the sensor (Avoid ground loops!).

• Make sure the shield wire in the sensor cable is earth grounded at one location.

3.6 Emissivity of Target Object

Determine the emissivity of the target object as described in appendix 9.1 Determination of Emissivity
on page 44. If emissivity is low, measured results could be falsified by interfering infrared radiation
from background objects (such as heating systems, flames, fireclay bricks, etc. close beside or behind
the target object). This type of problem can occur when measuring reflecting surfaces and very thin
materials such as plastic films and glass.
This measuring error when measuring objects with low emissivity can be reduced to a minimum if
particular care is taken during installation, and the sensing head is shielded from these reflecting
radiation sources.

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Installation

C

10000C

CR

1065

l

S

6











l … in meter
R … in Ohm
C … in pF / m
CS … in pF

4 Installation

The infrared sensor provides a standard two-wire current loop output and has been designed for use in
harsh industrial environments. The Smart model allows the remote programming of the temperature
range, alarm values and other functions.

4.1 Wire Parameters for Current Loop

You should use shielded twisted pairs or multiple twisted pairs with a joint shield.

Line length

The maximum line length of one two-wire line per loop is dependent on the loop resistance (R), the
capacitance per length unit (C), and the capacitance of the sensor CS (5000 pF). It is calculated as follows:

For simplifying the formula use, the parameters must be provided as “naked values” (in the given

dimension)!

Typical values for wire cross sections (copper)

• up to 250 m line length: 0.2 mm

• up to 650 m line length: 0.5 mm

• up to 1500 m multiple wire line lengths: 1.5 mm

• up to 3000 m single wire line lengths: 2.5 mm

2

cross section AWG24

2

cross section AWG20

2

cross section

2

cross section

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Installation

All sensors and accessories are supplied with 1.5“ 20 UN 2 threads!

Protective Window

4.2 Dimensions of Sensor

All sensors are supplied with a fixed bracket and mounting nut. Alternatively, the sensor may also be
mounted using customer-supplied accessories. A pipe adapter and other accessories may also be used
(see section 6.1 Overview on page 31).

Figure 4: Dimensions of the Sensor

4.2.1 Fixed Brackets

Figure 5: Fixed bracket XXXTXXACFB (left) with sensor delivered

4.3 Connecting the Signal Line

Before connecting the cable to the sensor (standard and Smart models) you should unscrew the cap
from the back of the sensor. Proceed as follows:

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Installation

1.) Prepare the cable, remove about 6cm (2.36 in) of

the insulation. Shorten the shield to about 1cm (0.4 in).
Tin-coat the connecting leads.

2.) Unscrew the end-cap until it can be pulled away

from the sensor body.

3.) Open the PG threaded cable gland.

4.) The cable gland consists of a PG nut,

a plastics part and a metal cone ring.

5.) Feed the prepared cable through the components

of the cable gland.

6.) Make sure to have a proper contact between the

braided shield and the metal cone ring.

7.) Place the PG screwed cable gland back into the

outer cap. Tighten the PG nut firmly.

8.) Connect the signal wires to the screw terminals.

9.) Screw the end-cap firmly onto the sensor until it is tight (flush with the sensor body).

IMPORTANT: Neither the end-cap nor the cable gland should have any play after tightening.

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Installation

The screwed cable gland described above is not a strain relief! Consequently, the cable
must be clamped accordingly during the installation. The outside diameter of the
connecting cables (round cable) should lie between 4 to 6 mm (about 0.2 inches). Note
that it might be necessary to additionally seal the cable entry to allow IP65 with smaller
cables!

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4.4 Basic Model

Figure 8: Back panel of basic model

Figure 6: Back panel of basic model

Controller

Shield

Basic model

The standard model is available for °C or °F. It
provides a 2 pin screw-jumper terminal for
connecting the 4 to 20 mA current loop. The polarity
is indicated on the panel.
Above the screw-jumper terminal there are two
rotary switches for emissivity setting. Emissivity is
preset at the factory at 0.95 (see figure). The appendix
lists typical emissivity values for common materials,
see appendix see section 9.2 Typical Emissivity

Values, page 44.

4.4.1 Installation with a Controller

Installation

Figure 7: Typical installation of basic model

4.5 Smart Model

The Smart model has a 3 pin screw-jumper terminal
for connecting the 4 to 20 mA current loop and the
alarm output. The terminal assignment is marked on
the panel. To allow clip leads from a HART adapter to
attach directly to the sensor for setting sensor
parameters, raise the removable terminal strip about
4 mm (0.2 inches) from the rear panel board and
connect across the exposed (+) and (-) pins. For
example, via line terminals, a lap-top with a HART
adapter can be used for programming the sensor.

4.5.1 HART Protocol

Originally, transmission of information was in one direction only, from sensing head to process control.
The parameters monitored for the production of a product were not changed. In order to use the same
technological equipment to manufacture a multitude of differing products, it must be possible to
quickly alter many process parameters. This has an effect on the sensing head. Measuring range,
accuracy and alarm values must be redefined. It would be extremely inconvenient if it were necessary
to reprogram the sensing head at the unit every time. The HART protocol arose from this requirement.

It allows the application of ”intelligent” sensors. The sensing heads can be programmed from the control

room. This means that information is transmitted in two directions. The sensing head provides analog
measured values to the control room via the 4 to 20 mA current loop. The sensing head can be
reprogrammed from the control room by means of bi-directional transmission of digital signals. The
superposition of analog and digital signals is described by the HART protocol. Sensors which are
programmable in this way are called SMART sensors. Apart from the Smart model, a HART/RS232

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Installation

Terminal 6 is connected internally to computer chassis ground!

Figure 9: HART/RS232 adapter

Controller, Display, or just nothing
within the current loop.

Computer

COM-Port

Controller, Display, or just nothing
within the current loop.

Computer

COM-Port

adapter is also available. This adapter allows programming of infrared sensing heads using a computer
with an RS232 interface.

4.5.2 HART/RS232 Adapter

The adapter (XXXTXACRCK) allows both remote
setting and signal processing of one or more sensors
in a 4 to 20 mA current loop. A software suitable for a
Windows® PC are supplied together with the adapter.
The adapter has a 25-pin terminal connector for
connecting to an RS232 interface. Screw terminals are
provided for connecting the 4 to 20 mA current loop,
terminal 4 (S2) and terminal 5 (S1).

4.5.3 Installation of Smart Model

Figure 10: Typical installation of Smart model using the external resistor

Figure 11: Typical installation of Smart model using the internal resistor

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Installation

The sensing heads are factory-programmed with ”Polling Address 0”!

Sensor

4.5.4 Address Assignment for Multiple Sensors

When installing a number of sensors, note that each sensing head must first be assigned a separate
polling (1 to 15). To do this, use the software supplied with the Smart model, and the HART/RS232
adapter:

• Install the software, see software manual.

• Connect the HART/RS232 adapter to the RS232 interface of your computer.

• Connect the Smart model which is to be programmed to the adapter. Use either the installation

with the external resistor or the alternative with the internal resistor.

• For configuring the sensor, go to the <Sensor> <Sensor Setup> menu in the software.

Figure 12: Address assignment with external (left) and internal (right) resistor

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Installation

The sensing heads are factory-programmed with ”Polling Address 0”!

POWER SUPPLY

Sensors

Voltage [V]

Op. Current [mA]

1
2
3
4
5
6
7
8

9
10
11
12

13
14
15

24
24
24
24
24
24
24
24
24
24
24
24

28
28
28

4

8
12
16
20
24
28
32
36
40
44
48

52
56
60

Monitor

HART/RS232

Adapter

Shield (6)

Sensor1

Sensor2

Sensor...

!

4.5.5 Installation of Multiple Sensors (digital, address mode)

• Maximum 15 sensors can be used. The polling address must always be >0.

• Communication is purely digital, no analog current output is provided

• Set each sensor failsafe mode to “minimum”

Figure 13: All sensors in digital communication using the external resistor

Figure 14: Multiple sensors using the internal resistor

When installing a number of sensors, note that each sensing head must first be assigned a separate
polling address (1 to 15), section 4.5.4 Address Assignment for Multiple Sensors on page 21).

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Installation

The sensing heads are factory-programmed with ”Polling Address 0”!

POWER SUPPLY

Sensors

Voltage [V]

Op. Current [mA]

1
2
3
4
5
6
7
8

9
10
11
12

24
24
24
24
24
24
24
24

28
28
28
28

23
27
31
35
39
43
47
51

55
59
63
67

HART/RS232

Adapter

Monitor

Shield (6)

!

4.5.6 Installation of Multiple Sensors (digital and analog, address mode)

• Maximum 12 sensors can be used.

• Analog and digital communication for the sensor with polling address 0.

• Communication for the remaining 11 sensors purely digital.

Figure 15: All sensors in digital communication, first sensor also with analog current output

When installing a number of sensors, note that each sensing head must first be assigned a separate
polling address (0 to 11), section 4.5.4 Address Assignment for Multiple Sensors on page 21).

4.5.7 Installation of Multiple Sensors (digital and analog, tag mode)

To run a sensor with analog current output, the sensor is to address with polling address 0. In case of
having multiple sensors running with analog current output, the polling address can not be the criteria
to distinguish between the sensors, because every sensor would be set to the same address. To avoid
this, a sensor can be named by means of a so called tag. The tag will be stored within the units memory
and can later be used to identify the sensor uniquely.

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Installation

In case of having more than 3 units, please contact your local dealer for additional
information for installing!

Figure 17: Using the alarm output

HART/RS232

Adapter

Monitor

Shield (6)

current loop

Figure 16: All sensors in digital communication and with analog current output

To prepare sensors for tag mode:

1. The sensing heads are factory-programmed with ”Polling Address 0”.

2. Start up the software with a single sensor (address mode).

3. Define a unique tag for the sensor, see the <Advanced Setup> in the menu <Sensor> <Sensor

Setup>.

4. Exit the software.

5. Repeat steps 2 to 4 for every additional sensor.

6. Start up the software with multiple sensors, select <Define Scan List>, input the tags for all

requested sensors.

4.5.8 Alarm Output

The alarm output of the Smart model is not electrically
isolated. The maximum current carrying capacity is 150
mA. Use the circuit diagram. The LED is operated with
10 mA and could be used as an indicator, or as an
optocoupler. The alarm current does not influence the
signal current (4 to 20 mA current loop).

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Options

Stainless Steel Fittings

5 Options

A full range of options for various applications and environments are available. Options are factory­installed and must be specified at the time of placing the order:

• °C or °F (basic model only)

• Air/Water cooled housing (Option: …W), includes air purge

• Intrinsically-safe rating

…IS4 for TXS models
…IS4W for TXS models with Air/Water-Cooled Housing
…IS5 for TXS models in stainless steel
…IS5W for TXS models in stainless steel and Air/Water-Cooled Housing

• ISO Calibration Certificate, based on national standards (e.g. DAkkS) (XXXTXCERT)

• Sensor in stainless steel (…S)

5.1 Air/Water-Cooled Housing

The Air/Water-Cooled Housing option allows the sensor to be used in ambient temperatures up to
120°C (250°F) with air-cooling, and 175°C (350°F) with water-cooling. The cooling media should be

connected using 1/8” NPT stainless steel fittings. Air flow should be 1.4 to 2.5 l/sec at 25°C (77°F). Water

flow should be approximately 1.0 to 2.0 l/min (water temperature between 10 and 27°C (50 to 80.6°F).
Chilled water below 10°C (50°F) is not recommended, see section 5.1.2 Avoidance of Condensation on
page 26.
The Air/Water-Cooled Housing is also available in stainless steel (…S).

Figure 18: Sensor with Air/Water-Cooled Housing

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Options

There is no warranty repair possible in case of condensed water within the housing!

Inner Thread NPT (in.)

Pipe Outer Ø

1/8

4 mm (0.16 in)

1/8

6 mm (0.24 in)

1/8

8 mm (0.31 in)

Inner Thread NPT (in.)

DIN-ISO-Outer Thread

1/8

4 mm (0.16 in)

Tuber Outer Ø

Tube Inner Ø

6 mm

4 mm

8 mm

6 mm

5.1.1 Connecting

As a standard the cooled housing is supplied with fittings and non-metric 1/8” NPT threads. If you
intend to supply the cooling media through pipes or hoses, consider the following information.

• Thread Adapter - metric pipe to NPT inside thread

• Thread Adapter - inch-type pipe to NPT inside thread

• Supporting tube for PVC or Tygon hoses

5.1.2 Avoidance of Condensation

If environmental condition makes water cooling necessary, it is strictly recommended to check whether
condensation will be a real problem or not.
Water cooling also causes a cooling of the air in the inner part of the device. Thereby the capability of
the air to store water decreases. The relative humidity increases and can reach 100% very quickly. In
case of a further cooling, the surplus water steam will come out as water (condensation). The water will
condense on the lenses and the electronics resulting in possible damage to the sensor. Condensation can
even happen on an IP65 sealed housing.

To avoid condensation, the temperature of the cooling media and the flow rate have to ensure a
minimum device temperature. The minimum device temperature depends on the ambient temperature
and the relative humidity, please consider the following table.

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Options

Relative Humidity [%]

Ambient Temperature [°C/°F]

10

15

20

25

30

35

40

45

50

55

60

65

70

75

80

85

90

95

100

0/

32

0/

32

0/

32

0/

32

0/

32

0/

32

0/

32

0/

32

0/

32

0/

32

0/

32

0/

32

0/

32

0/

32

0/

32

0/

32

0/

32

0/

32

0/

32

0/

32

5/

41

0/

32

0/

32

0/

32

0/

32

0/

32

0/

32

0/

32

0/

32

0/

32

0/

32

0/

32

0/

32

0/

32

0/

32

0/

32

0/

32

0/

32

0/

32

5/

41

10/

50

0/

32

0/

32

0/

32

0/

32

0/

32

0/

32

0/

32

0/

32

0/

32

0/

32

0/

32

0/

32

0/

32

5/

41

5/

41

5/

41

5/

41

5/

41

10/

50

15/

59

0/

32

0/

32

0/

32

0/

32

0/

32

0/

32

0/

32

0/

32

0/

32

5/

41

5/

41

5/

41

5/

41

10/

50

10/

50

10/

50

10/

50

10/

50

15/

59

20/

68

0/

32

0/

32

0/

32

0/

32

0/

32

0/

32

5/

41

5/

41

5/

41

10/

50

10/

50

10/

50

10/

50

15/

59

15/

59

15/

59

15/

59

15/

59

20/

68

25/

77

0/

32

0/

32

0/

32

0/

32

5/

41

5/

41

10/

50

10/

50

10/

50

10/

50

15/

59

15/

59

15/

59

20/

68

20/

68

20/

68

20/

68

20/

68

25/

77

30/

86

0/

32

0/

32

0/

32

5/

41

5/

41

10/

50

10/

50

15/

59

15/

59

15/

59

20/

68

20/

68

20/

68

20/

68

25/

77

25/

77

25/

77

25/

77

30/

86

35/

95

0/

32

0/

32

5/

41

10/

50

10/

50

15/

59

15/

59

20/

68

20/

68

20/

68

25/

77

25/

77

25/

77

25/

77

30/

86

30/

86

30/

86

30/

86

35/

95

40/

104

0/

32

5/

41

10/

50

10/

50

15/

59

20/

68

20/

68

20/

68

25/

77

25/

77

25/

77

30/

86

30/

86

30/

86

35/

95

35/

95

35/

95

35/

95

40/

104

45/

113

0/

32

10/

50

15/

59

15/

59

20/

68

25/

77

25/

77

25/

77

30/

86

30/

86

35/

95

35/

95

35/

95

35/

95

40/

104

40/

104

40/

104

40/

104

45/

113

50/

122

5/

41

10/

50

15/

59

20/

68

25/

77

25/

77

30/

86

30/

86

35/

95

35/

95

35/

95

40/

104

40/

104

40/

104

45/

113

45/

113

45/

113

45/

113

50/

122

60/

140

15/

59

20/

68

25/

77

30/

86

30/

86

35/

95

40/

104

40/

104

40/

104

45/

113

45/

113

50/

122

50/

122

50/

122

50/

122

50/

122

50/

122

50/

122

60/

140

70/

158

20/

68

25/

77

35/

95

35/

95

40/

104

45/

113

45/

113

50/

122

50/

122

50/

122

50/

122

50/

122

60/

140

60/

140

60/

140

60/

140

60/

140

60/

140

70/

158

80/

176

25/

77

35/

95

40/

104

45/

113

50/

122

50/

122

50/

122

60/

140

60/

140

60/

140

60/

140

60/

140

70/

158

70/

158

70/

158

70/

158

70/

158

70/

158

80/

176

90/

194

35/

95

40/

104

50/

122

50/

122

50/

122

60/

140

60/

140

60/

140

70/

158

70/

158

70/

158

70/

158

80/

176

80/

176

80/

176

80/

176

80/

176

80/

176

90/

194

100/

212

40/

104

50/

122

50/

122

60/

140

60/

140

70/

158

70/

158

70/

158

80/

176

80/

176

80/

176

80/

176

80/

176

90/

194

90/

194

90/

194

90/

194

90/

194

100/

212

Temperatures higher than 60°C /
140°F are not recommended due to
the temperature limitation of the
device.

Example:

Ambient temperature = 50 °C
Relative humidity = 40 %
Minimum device temperature = 30 °C

The use of lower temperatures is at your own risk!

Tab. 1: Minimum device temperatures [°C/°F]

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Options

The metallic enclosure of the intrinsically safe unit is not earthed by installation. At
least one of the following safety measures must be met to minimize the danger of
electrostatic charges:

• Earth grounding of the cable shield

• Installing the unit’s metallic enclosure on an earth grounded mounting bracket

or on any other grounded bases

5.2 ATEX Intrinsic Safety

The Smart unit is available with Intrinsic Safety rated as:

II 2G Ex ib IIC T4 Gb for -20°C < TAmbient < 70°C (-4°F < TAmbient < 158°F)

II 2D Ex ib IIIC T135°C Db IP65 for -20°C < TAmbient < 70°C (-4°F < TAmbient < 158°F)

The required power supply barrier for the unit must be ordered separately.
This intrinsically safe unit is available with a water-cooled housing. The water cooled housing can
provide a cooler, more stable operating environment for the electronics but does not allow for approved
IS operation when external ambient conditions are above 70°C (158°F).

Units with Intrinsic Safety (IS) rating are also available made from stainless steel.

Please also consider section 9.4 ATEX Certificate of Conformity, page 49.

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Options

Socket

HART

Adapter

Power

Explosion critical area

Isolating Driver

Ui = 22 V
Ii = 30 mA
Pi = 660 mW
Li = 0.17 mH
Ci = 16 nF

5.2.1 Power Supply Barrier – Variant 1

The recommended power supply barrier for the unit consists, in its simplest form, of two parts from the
CONTRANS I series, manufactured by ABB Automation (formerly Hartmann & Braun):

• Intrinsically Safe isolating driver, part # V17151-620

• Din rail mountable sockets:

Socket for one driver, with integrated power supply for input voltages of 95 to 253 VAC
(V17111-130)

Socket for one driver, with integrated power supply for input voltages of 19 to 33 VDC
(V17111-120)

Socket for up to eight drivers (V17111-251)

Socket for up to 16 drivers (V17111-351)

The CONTRANS I interface modules are a series of driver modules, power supplies, and backplanes,
all of which can be intermixed to provide the best solution for a specific application. The recommended
solution, consisting of a single intrinsically safe isolating module and a single power supply socket, is
only one of several combinations possible.

Figure 19: Intrinsic Safety Installation (example)

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Options

Socket

HART

Adapter

Explosion critical area

Socket

HART

Adapter

Explosion critical area

5.2.2 Power Supply Barrier – Variant 2

As an alternative to variant 1, the user can also use other power supply barriers. The manufacturer
recommends using one of the following two barriers:

• Company R. Stahl, model 9160/13-11-10s

• Company Pepperl+Fuchs, model KCD2-STC-EX1

Figure 20: Intrinsic Safety Installation with Power Supply Barrier

from company Stahl (example)

Figure 21: Intrinsic Safety Installation with Power Supply Barrier

from company Pepperl+Fuchs (example)

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Accessories

Adjustable Pipe Adapter

(XXXTXXAPA)

Sighting Viewer
(XXXTXXACSV)

Right Angle Mirror
(XXXTXXACRA)

Air Purge Collar
(XXXTXXACAP)

Mounting Nut
(XXXTXXACMN)

Sensor

Fixed Bracket
(XXXTXXACFB)

Adjustable Bracket
(XXXTXXACAB)

Sensor with Air-/Water Cooled
Housing (Option)

ThermoJacket and Accessories
(RAYTXXTJ3M)

6 Accessories

6.1 Overview

For all models:

• Mounting Nut XXXTXXACMN

• Fixed Mounting Bracket XXXTXXACFB

• Adjustable Bracket XXXTXXACAB

• Air Purge Collar XXXTXXACAP

• Right Angle Mirror XXXTXXACRA

• Sighting Viewer XXXTXXACSV

• Pipe Adapter XXXTXXACPA

• Pipe Adapter XXXTXXAPA

• ThermoJacket Housing RAYTXXTJ3M

• Industrial Power Supply XXXSYSPS

• Protective Window for lens protection

• Panel Mount Display RAYGPC/RAYGPCM

For Smart model:

• PC communications software, HART/RS232 Adapter XXXTXACRCK

• USB/RS232 Adapter XXXUSB485S

Figure 22: Overview to the available accessories

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Accessories

6.2 Adjustable Bracket

Figure 23: Adjustable Bracket (XXXTXXACAB)

6.3 Air Purge Collar

The Air Purge Collar (XXXTXXACAP) is used to keep dust, moisture, airborne particles, and vapors
away from the lens. It can be mounted before or after the bracket. The air flow is passed through 1/8”
NPT stainless steel fitting onto the front aperture. Air flow should be a maximum of 0.5 to 1.5 l/sec.
Clean, oil free air is recommended.

Figure 24: Dimension of Air Purge Collar (left), Sensor with Air Purge Collar (right)

6.4 Right Angle Mirror

The Right Angle Mirror (XXXTXXACRA) is used to turn the field of view by 90° against the sensor axis.
It is recommended when space limitations or excessive radiation do not allow to directly align the sensor
to the target. The mirror must be installed after the bracket and after the Air Purge Collar and screwed
in fully. In dusty or contaminated environments, air purging is required to keep the mirror surface
clean.

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Figure 25: Right Angle Mirror

When using the Right Angle Mirror, adjust the emissivity settings downward by 5%.
For example, for an object with an emissivity of 0.65, you adjust the value down to 0.62.
This correction accounts for energy losses in the mirror!

Accessories

6.5 Sighting Viewer

The Sighting Viewer (XXXTXXACSV) is used to aid in the alignment of the standard sensor. It is used
when the object is small and far from the sensor as well as when it is difficult to obtain a direct in-line
sighting. It can be used both with and without the Air Purge Collar, but not with the Right Angle Mirror.
First secure the sensor to the bracket using the mounting nut or the Air Purge Collar. Next screw on the
Sighting Viewer Tool fully. Now, position and secure the bracket. When the alignment is complete, do
not forget to remove the Sighting Viewer Tool.

Figure 26: Sighting Viewer

6.6 Pipe Adapter

The adjustable pipe adapter (XXXTXXACPA) is available to connect a sighting tube or conduit to a
sensor with or without water/air cooled housing.

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Accessories

2x Mounting flange
(XXXTXXMF)

Mounting flange for

sighting tube (XXXTXXMST)

Figure 27: Pipe Adapter

6.7 Adjustable Pipe Adapter

The adjustable pipe adapter accessory (XXXTXXAPA) can be permanently placed on a surface and
aimed in any direction within a 45° radius. The accessory kit includes two mounting flanges, a circular
pipe adapter, a 2” pipe nipple, a mounting flange for sighting tube, and all necessary bolts and washers.

Figure 28: Adjustable Pipe Adapter

6.8 ThermoJacket

The ThermoJacket® allows use of the sensor in ambient temperatures up to 315°C (600°F). The rugged
cast aluminum housing completely encloses the sensor and provides water cooling as well as air
purging. Sensing heads can easily be installed or removed with the ThermoJacket housing in its
mounted position.

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Figure 29: ThermoJacket (RAYTXXTJ3)

For more information see the ThermoJacket’s manual.

Accessories

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Accessories

To prevent electrical shocks, the power supply must be used in protected environments
(cabinets)!

6.9 Industrial Power Supply

The DIN-rail mount industrial power supply delivers isolated dc power and provides short circuit and
overload protection.

Technical data:

Protection class prepared for class II equipment
Environmental protection IP20
Operating temperature range -25°C to 55°C (-13°F to 131°F)
AC Input 100 – 240 VAC 44/66 Hz
DC Output 24 VDC / 1.3 A
Cross sections input/output

0.08 to 2.5 mm² (AWG 28 to 12)

Figure 30: Industrial Power Supply (XXXSYSPS)

1

Copyright Wago®

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1

Accessories

Order number

Model

Designation

Material

XXXTXACTWL

LT

none

Amtir

0.65

0.05

XXXTXACTWLF1

LT

none (stainless steel)

Polyethylene foil

(non-poisonous, non-fragile)

0.75

0.05

XXXTXACTWM

MT

4 red dots

Sapphire

0.88

0.05

XXXTXACTWH

HT

3 red dots

Glass

0.88

0.05

XXXTXACTWGP

G5, P7

2 red dots

Calcium Fluorid

0.93

0.05

6.10 Protective Window

Protective windows can be used to protect the sensor’s optic against dust and other contaminations. For

sensors with plastic lenses the use of a protective window combined with the air purge is strongly
recommended.
The following table provides an overview of the available protective windows recommended for a LT,
MT, HT, G5 and P7 model. All protective windows are also available in stainless steel (…S).

Table 2: Protective Windows

For special requirements, please ask our Sales Department about our range of special protective
windows.

Models delivered with mounted protective windows are preset as follows:

Basic model Basic model has no adjustable parameter for the transmissivity. The influence of

transmissivity is reflected by a resulting emissivity value. E.g. transmissivity of
protective window is 0.88, emissivity of measured object is 0.95, resulting emissivity
value is set with the two rotary switches to 0.84 (0.88 * 0.95 = 0.84)

Smart model Transmissivity for the protective window is set in the software directly. The emissivity

value is not changed.

Determination of transmissivity of an unknown protective window:

If transmissivity of the measuring screen is not indicated on the data sheet, you can also determine the
transmissivity yourself. Please proceed as follows:

1. Measure the temperature of the target object with the sensing head, without using the protective

window. Note correct setting of emissivity. With the basic model, emissivity is set with the two
rotary switches. For the Smart model, the emissivity is entered in the software and the value for
“Transmissivity“ is specified as 1.00.

2. Insert the protective window in the sensing head.

3. If you use the basic model of the sensing head, adjust the emissivity until the same temperature is

displayed, as was determined without the protective window.
If the smart model is used, adjust the transmissivity in the software until the same temperature is
displayed, as it was determined without the protective window.

For more information regarding the mounting of a protective window, see section 8.4 Replacing a

Protective Window on page 42.

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Accessories

6.11 USB/RS232 Adapter

The USB/RS232 Adapter is one standard USB 2.0 to serial bridge that has one DB-9 RS232 male
connector. The DB-9 pin serial port is configured as a DTE (data terminal equipment) device which is
same as all PC COM ports. The industry DIN rail and panel mounting design enable user a fast and
professional installation.

Technical Data

Power supply 5 VDC direct from USB port

Speed max. 256 kBit/s

RS232 standard 9 pin DTE full-duplex

USB connector type B (supplied with type A to type B cable)

Ambient Temperature 0 to 60°C (32 to 140°F), 10-90% relative humidity, non-condensing

Storage Temperature -20 to 70°C (-4 to 158°F), 10-90% relative humidity, non-condensing

Dimensions (L x W x H) 151 x 75 x 26 mm (5.9 x 2.9 x 1 in)

Figure 31: USB/RS232 Converter (XXXUSB485S)

TX Sensor HART/RS232 Adapter RS232/USB Adapter Computer

Figure 32: Principal bridging a TX sensor with HART communication

via RS232 to USB communications

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Software

7 Software

7.1 Requirements

• PC running Windows 2000/XP/Vista/Win7 at minimum 64 MB RAM

• approx. 10 MB hard-disc memory for the program

7.2 Installation and Start

The following explains how to start and setup the software. Make sure any sensor or sensors are turned
on before running the program. The Startup Wizard runs the first time you use the program. After the
first saving your settings, the program starts at the Main screen.

Software Start

1. To install the software, choose the SETUP.EXE file on your data medium.

2. Double click the <DataTemp Multidrop> icon on your desktop to open the software. The

software prompts you to choose to create a new file or open a saved file. Click the <Create a
New File> button.

3. The software checks for a free COM port, this appears as pre-setting. Make sure the <HART

Protocol> is selected on the screen.

4. Click <Continue> and follow instructions on the screen.

5. On the last screen click <Finish>.

Figure 33: Setting the Software to <HART> Protocol

After communication with the devices (real or simulated) is established, a screen similar to the one
below displays. This screen shows how many devices are attached as well as their identification
numbers and types of devices. Check here to make sure all installed devices are connected properly.

Note: If you notice that not all devices were found, click on the <Back> button to return to the previous screen,

then go check your sensor connections. After checking, click on the <Continue> button so the software
rescans for connected devices.

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Software

Figure 34: List of Found Devices

7.3 Sensor Setup

Selecting <Sensor Setup> from the <Setup> displays a list of attached sensors. When you select one, a
screen similar to the following displays.
In the <Sensor Setup> screen, you may configure the settings for the signal processing (emissivity,
ambient control, hold modes, fail safe mode), the output signals (alarms and relay), and the advanced
setup (polling address, descriptions).

Figure 35: <Sensor Setup> Menu

See the DataTemp Multidrop software help for further instructions!

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Maintenance

Symptom

Possible Cause

Solution

No Output

Erroneous Temperature
Erroneous Temperature

Erroneous Temperature

Erroneous Temperature
Temperature Fluctuates

Cable Disconnected

Faulty Sensor Cable
Field of View Obstructed

Lens Dirty

Wrong Emissivity Setting
Wrong Signal Processing

Check Cable Connections

Verify Cable's Integrity
Remove the Obstruction

Clean the Lens

Correct the Setting
Correct Peak, Valley, or Average Settings

Symptom

4 – 20 mA Output

Internal defect

21 mA

Target temperature under range

4 mA

Target temperature over range

20 mA

Never rely exclusively on the automatic error indication when monitoring critical
heating processes. It is strongly recommended to take additional safety measures!

8 Maintenance

Our customer service representatives are always at your disposal for any questions you might have.
This service includes any support regarding the proper application of your infrared measuring system,
calibration or the solution to customer-specific solutions as well as repair.
In many cases your problems will be applications-specific and can possibly be solved over the
telephone. So, if you need to return equipment to us, please contact our Service Department before
doing so, see phone and fax numbers at the beginning of this document.

8.1 Troubleshooting Minor Problems

Tab. 3: Troubleshooting

8.2 Automatic Error Indication

The automatic error indication (alarm output) shall warn the user and guarantee a secure output in the
event of a system error. In the first place, however, its task is to switch the system off in case of a faulty
setup or a defect in the sensing head or in the electronic circuits.

Please select the desired Alarm Mode, see <Advanced Setup> in the menu <Sensor> <Sensor Setup> of
the software.

• Off no alarm function

• Normally Open open output within the alarm thresholds

• Normally Closed closed output within the alarm thresholds

• Intern. Temp. n.c. open, if internal sensor temperature is exceeded

• Intern. Temp. n.o. closed if internal sensor temperature is exceeded

Current output:

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Maintenance

Do not use any ammonia or any cleaners containing ammonia to clean the lens.

This may result in permanent damage to the lens’ surface!

8.3 Cleaning the Lens

Care should be taken to keep the lens clean. Any foreign matter on the lens will affect the accuracy of
the measurements. Be sure to take care when cleaning the lens. Please observe the following:

1. Blow off lose particles with clean air.

2. Gently brush off remaining particles with a soft camel hair brush.

3. To remove any more severe contamination use a clean, soft cloth dampened with distilled

water. In any case, do not scratch the lens surface!

For finger prints or other grease, use any of the following:

• Denaturated alcohol

• Ethanol

• Kodak lens cleaner

Apply any of the above to the lens. Wipe gently with a clean, soft cloth until you see colors on the lens
surface, then allow to air dry. Never wipe the surface dry, this may scratch the surface. If the lens is
contaminated with silicones (e.g. from hand creams), clean it carefully using Hexane. Allow the lens to
air dry.

8.4 Replacing a Protective Window

8.4.1 Models produced after May 1999

Attention! Beginning production date May 1999, the models contain a thread allowing an easier

protective window exchange. (If you received your model together with this manual, your model was
produced after May 1999.) If you own an older model, refer to the description given in section 8.4.2

Models produced before May 1999 on page 43.

Make sure to use the appropriate protective window for the spectral range of your sensor model, for
more information see section 6.10 Protective Window on page 37.

The window material is placed in a metal ring with a thread with an inner rubber gasket. This rubber
gasket hermetically seals the sensor against atmospheric contaminants.
Replace the protective window using the special tool supplied with the spare window. Put the tools

nozzles into the wholes on the window’s mounting ring. Now gently unscrew the protective window

from its mount by turning to the left. Take care to screw in the new protective window as tight as
possible, but do not over tighten!

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Maintenance

Sensor
Window

Mounting Tool

Figure 36: Replacing the Protective Window

8.4.2 Models produced before May 1999

Attention! If you own a model produced before May 1999 and where the protective window looks

similar to the one shown on the photographs below, refer to the following description.

Make sure to use the appropriate protective window for the spectral range of your sensor model, for
more information see section 6.10 Protective Window on page 37.

The window material is placed in a metal ring which is enclosed with a rubber gasket. This rubber
gasket keeps the protective window in the sensor. (Models produced later than May 1999 have a thread
instead - check this, before you order spare parts!)
Replace the protective window using the plastic levers supplied with the spare window. Place the

levers’ blades beneath the projection of the protective window. Now gently lever the protective window

from its mount.

Figure 37: Replacing the Protective Window

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Appendix

9 Appendix

9.1 Determination of Emissivity

Emissivity is a measure of an object’s ability to absorb and emit infrared energy. It can have a value
between 0 and 1.0. For example a mirror has an emissivity of 0.1, while the so-called “Blackbody“
reaches an emissivity value of 1.0. If a higher than actual emissivity value is set, the output will read
low, provided the target temperature is above its ambient temperature. For example, if you have set

0.95 and the actual emissivity is 0.9, the temperature reading will be lower than the true temperature.
An object’s emissivity can be determined by one of the following methods:

1. Determine the actual temperature of the material using an RTD (PT100), a thermocouple, or any

other suitable method. Next, measure the object’s temperature and adjust emissivity setting until
the correct temperature value is reached. This is the correct emissivity for the measured material.

2. For relatively low temperatures (up to 260°C / 500°F) place a plastic sticker (e.g. XXXRPMACED)

on the object to be measured. This sticker should be large enough to cover the target spot. Next,

measure the sticker’s temperature using an emissivity setting of 0.95. Finally, measure the

temperature of an adjacent area on the object and adjust the emissivity setting until the same
temperature is reached. This is the correct emissivity for the measured material.

3. If possible, apply flat black paint to a portion of the surface of the object. The emissivity of the paint

must be above 0.98. Next, measure the temperature of the painted area using an emissivity setting
of 0.98. Finally, measure the temperature of an adjacent area on the object and adjust the emissivity
until the same temperature is reached. This is the correct emissivity for the measured material.

To optimize surface temperature measurements, consider the following guidelines:

• Determine the object emissivity using the instrument which is also to be used for the

measurements.

• Avoid reflections by shielding the object from surrounding temperature sources.

• For higher temperature objects use instruments with the shortest wavelength possible.

• For translucent materials such as plastic foils or glass, assure that the background is uniform

and lower in temperature than the object.

• Mount instrument perpendicular to surface if possible. In all cases, do not exceed angles more

than 30° from incidence.

9.2 Typical Emissivity Values

The following table provides a brief reference guide for determining emissivity and can be used when
one of the above methods is not practical. Emissivity values shown in the table are only approximate,
since several parameters may affect the emissivity of a material. These include the following:

1. Temperature

2. Angle of measurement

3. Geometry (plane, concave, convex)

4. Thickness

5. Surface quality (polished, rough, oxidized, sandblasted)

6. Spectral range of measurement

7. Transmissivity (e.g. thin films plastics)

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Appendix

METALS

Material

Emissivity

1 µm

2.2 µm

5.1 µm

8 – 14 µm

Aluminum

Unoxidized

0.1-0.2

0.02-0.2

0.02-0.2

0.02-0.1

Oxidized

0.4

0.2-0.4

0.2-0.4

0.2-0.4

Alloy A3003, Oxidized

0.4

0.4

0.3

Roughened

0.2-0.8

0.2-0.6

0.1-0.4

0.1-0.3

Polished

0.1-0.2

0.02-0.1

0.02-0.1

0.02-0.1

Brass

Polished

0.35

0.01-0.05

0.01-0.05

0.01-0.05

Burnished

0.65

0.4

0.3

0.3

Oxidized

0.6

0.5

0.5

Chromium

0.4

0.05-0.3

0.03-0.3

0.02-0.2

Copper

Polished

0.05

0.03

0.03

0.03

Roughened

0.05-0.2

0.05-0.2

0.05-0.15

0.05-0.1

Oxidized

0.2-0.8

0.7-0.9

0.5-0.8

0.4-0.8

Gold

0.3

0.01-0.1

0.01-0.1

0.01-0.1

Haynes

Alloy

0.5-0.9

0.6-0.9

0.3-0.8

0.3-0.8

Inconel

Oxidized

0.4-0.9

0.6-0.9

0.6-0.9

0.7-0.95

Sandblasted

0.3-0.4

0.3-0.6

0.3-0.6

0.3-0.6

Electropolished

0.2-0.5

0.25

0.15

0.15

Iron

Oxidized

0.7-0.9

0.7-0.9

0.6-0.9

0.5-0.9

Unoxidized

0.35

0.1-0.3

0.05-0.25

0.05-0.2

Rusted

0.6-0.9

0.5-0.8

0.5-0.7

Molten

0.35

0.4-0.6

—

—

Iron, Cast

Oxidized

0.9

0.7-0.95

0.65-0.95

0.6-0.95

Unoxidized

0.35

0.3

0.25

0.2

Molten

0.35

0.3-0.4

0.2-0.3

0.2-0.3

Iron, Wrought

Dull

0.95

0.9

0.9

Tab. 4: Typical Emissivity Values

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Appendix

METALS

Material

Emissivity

1 µm

2.2 µm

5.1 µm

8 – 14 µm

Lead

Polished

0.05-0.2

0.05-0.2

0.05-0.1

Rough

0.5

0.4

0.4

Oxidized

0.3-0.7

0.2-0.7

0.2-0.6

Magnesium

0.3-0.8

0.05-0.2

0.03-0.15

0.02-0.1

Mercury

0.05-0.15

0.05-0.15

0.05-0.15

Molybdenum

Oxidized

0.5-0.9

0.4-0.9

0.3-0.7

0.2-0.6

Unoxidized

0.25-0.35

0.1-0.3

0.1-0.15

0.1

Monel (Ni-Cu)

0.3

0.2-0.6

0.1-0.5

0.1-0.14

Nickel

Oxidized

0.8-0.9

0.4-0.7

0.3-0.6

0.2-0.5

Electrolytic

0.2-0.4

0.1-0.2

0.1-0.15

0.05-0.15

Platinum

Black

0.95

0.9

0.9

Silver

0.04

0.02

0.02

0.02

Steel

Cold-Rolled

0.8-0.9

—

0.8-0.9

0.7-0.9

Ground Sheet

0.6-0.7

0.5-0.7

0.4-0.6

Polished Sheet

0.35

0.2

0.1

0.1

Molten

0.35

0.25-0.4

0.1-0.2 — Oxidized

0.8-0.9

0.8-0.9

0.7-0.9

0.7-0.9

Stainless

0.35

0.2-0.9

0.15-0.8

0.1-0.8

Tin (Unoxidized)

0.25

0.1-0.3

0.05

0.05

Titanium

Polished

0.5-0.75

0.2-0.5

0.1-0.3

0.05-0.2

Oxidized

0.6-0.8

0.5-0.7

0.5-0.6

Tungsten

0.1-0.6

0.05-0.5

0.03

Polished

0.1-0.3

0.05-0.25

0.03-0.1

Zinc

Oxidized

0.6

0.15

0.1

0.1

Polished

0.5

0.05

0.03

0.02

Tab. 5: Typical Emissivity Values

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Appendix

NON-METALS

Material

Emissivity

1 µm

2.2 µm

5.1 µm

8 – 14 µm

Asbestos

0.9

0.8

0.9

0.95

Asphalt

— 0.95

0.95

Basalt

— 0.7

0.7

Carbon

Unoxidized

0.8-0.9

0.8-0.9

0.8-0.9

Graphite

0.8-0.9

0.7-0.9

0.7-0.8

Carborundum

0.95

0.9

0.9

Ceramic

0.4

0.8-0.95

0.8-0.95

0.95

Clay

0.8-0.95

0.85-0.95

0.95

Concrete

0.65

0.9

0.9

0.95

Cloth

— 0.95

0.95

Glass

Plate

0.2

0.98

0.85

“Gob”

0.4-0.9

0.9 — Gravel

— 0.95

0.95

Gypsum

— 0.4-0.97

0.8-0.95

Ice — — 0.98

Limestone

— 0.4-0.98

0.98

Paint (non-al.)

— —

0.9-0.95

Paper (any color)

— 0.95

0.95

Plastic (opaque, over 20 mils)

— 0.95

0.95

Rubber

— 0.9

0.95

Sand

— 0.9

0.9

Snow

— —

0.9

Soil — — 0.9-0.98

Water

— —

0.93

Wood, Natural

— 0.9-0.95

0.9-0.95

Tab. 6: Typical Emissivity Values

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Appendix

Monitor Terminal Block

Shield

Sensor

Computer

COM-Port

Monitor

Sensor

Figure 38: Monitor GP

9.3 Display Monitor

The Display Monitor GP (order number: RAYGPC/RAYGPCM) may be
operated both with the standard and with the Smart model. The monitor
allows Peak Hold, Valley Hold and Average and allows to adjust two
setpoints for alarm- or control use. The display monitor requires a supply
voltage of 110 VAC or 220 VAC. The monitor meets IP54 (IEC529, NEMA-

12) requirements. The unit withstands ambient temperatures in between 0
to 50°C (32 to 120°F). The 1/8 DIN monitor provides a 4 to 20 mA signal
input. The 4 digit LED display has a display resolution from 1°C (1°F). For
more detailed information, please be referred to the GP manual.

9.3.1 Installation with the Sensor

Figure 39: Sensor in analog communication, display with the monitor

The monitor can also be used to provide the power supply for a smart sensor in digital communication
(pin 9: + 24 VDC, pin 10: ground). For activating the 4 – 20 mA current input, the monitor must be set to
the device type H005, see the operating instructions for the monitor.
A possible installation is given in the figure below. For other installations see the figures in section 4.5

Smart Model on page 19.

Figure 40: Sensor in digital communication, display and power with the monitor

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9.4 ATEX Certificate of Conformity

Appendix

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Appendix

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Appendix

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