TX
Infrared Sensor
Operating Instructions
Rev. O7 07/2017
50501
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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
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)
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.
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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
6 ACCESSORIES ............................................................................................................................................... 29
6.1 OVERVIEW .................................................................................................................................................. 29
6.2 ADJUSTABLE BRACKET ............................................................................................................................... 30
6.3 AIR PURGE COLLAR ................................................................................................................................... 30
6.4 RIGHT ANGLE MIRROR .............................................................................................................................. 30
6.5 SIGHTING VIEWER ...................................................................................................................................... 31
6.6 PIPE ADAPTER ............................................................................................................................................ 31
6.7 ADJUSTABLE PIPE ADAPTER ...................................................................................................................... 32
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6.8 THERMOJACKET .......................................................................................................................................... 32
6.9 INDUSTRIAL POWER SUPPLY ...................................................................................................................... 34
6.10 PROTECTIVE WINDOW .............................................................................................................................. 35
6.11 USB/RS232 ADAPTER .............................................................................................................................. 36
7 SOFTWARE ..................................................................................................................................................... 37
7.1 REQUIREMENTS ........................................................................................................................................... 37
7.2 INSTALLATION AND START ........................................................................................................................ 37
7.3 SENSOR SETUP............................................................................................................................................. 38
8 MAINTENANCE ............................................................................................................................................ 39
8.1 TROUBLESHOOTING MINOR PROBLEMS ..................................................................................................... 39
8.2 AUTOMATIC ERROR INDICATION ............................................................................................................... 39
8.3 CLEANING THE LENS .................................................................................................................................. 40
8.4 REPLACING A PROTECTIVE WINDOW ........................................................................................................ 40
8.4.1 Models produced after May 1999 ........................................................................................................ 40
8.4.2 Models produced before May 1999 ...................................................................................................... 41
9 APPENDIX ....................................................................................................................................................... 42
9.1 DETERMINATION OF EMISSIVITY ................................................................................................................ 42
9.2 TYPICAL EMISSIVITY VALUES ..................................................................................................................... 42
9.3 DISPLAY MONITOR ..................................................................................................................................... 46
9.3.1 Installation with the Sensor ................................................................................................................ 46
9.4 ATEX CERTIFICATE OF CONFORMITY ........................................................................................................ 47
NOTES
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Safety Instructions
8 Rev. O7 07/2017 TX
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
Disposal of old instruments should be handled according to professional and
environmental regulations as electronic waste.
Operating Instructions
The following symbols are used to highlight essential safety information in the operation instructions:
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.
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Technical Data
TX Rev. O7 07/2017 9
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
10 Rev. O7 07/2017 TX
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
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
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Technical Data
TX Rev. O7 07/2017 11
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
Figure 2: Optical Diagrams
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]
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Technical Data
12 Rev. O7 07/2017 TX
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
TX Rev. O7 07/2017 13
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 42.
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.
Target greater than spot size
Target greater equal to spot size
Target smaller than spot size
Background
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Basics
14 Rev. O7 07/2017 TX
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 42. 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
TX Rev. O7 07/2017 15
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:
C
10000C
CR
1065
l
S
6
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
2
cross section AWG24
up to 650 m line length: 0.5 mm
2
cross section AWG20
up to 1500 m multiple wire line lengths: 1.5 mm
2
cross section
up to 3000 m single wire line lengths: 2.5 mm
2
cross section
l … in meter
R … in Ohm
C … in pF / m
CS … in pF
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Installation
16 Rev. O7 07/2017 TX
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 29).
All sensors and accessories are supplied with 1.5“ 20 UN 2 threads!
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:
Protective Window
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