Optris CTvideo 1M, CTvideo 3M, CTvideo 2M Operating Manual

optris

®

CTvideo

Infrared-thermometer

1M/ 2M/ 3M

Operator’s Manual

Optris GmbH

Ferdinand-Buisson-Str. 14
13127 Berlin
Germany

Tel.: [phone]
Fax: [phone]

E-mail: [e-mail]
Internet: www.optris.de

-Table of Contents 3-

Table of Contents

Table of Contents ............................................................................................................................................. 3

1 General Information ................................................................................................................................. 7

1.1 Description ....................................................................................................................................... 7

1.2 Warranty ........................................................................................................................................... 8

1.3 Scope of Supply ............................................................................................................................... 8

1.4 Maintenance ..................................................................................................................................... 9

1.5 Model Overview .............................................................................................................................. 10

1.6 Factory Default Settings ................................................................................................................. 11

2 Technical Data ........................................................................................................................................ 13

2.1 General Specifications ................................................................................................................... 13

2.2 Electrical Specifications .................................................................................................................. 14

2.3 Measurement Specifications [1M models] ..................................................................................... 15

2.4 Measurement Specifications [2M models] ..................................................................................... 16

-4 -

2.5 Measurement Specifications [3M models] ..................................................................................... 17

2.6 Optical Charts ................................................................................................................................. 18

3 Mechanical Installation .......................................................................................................................... 21

4 Accessories ............................................................................................................................................ 24

4.1 Air Purge Collar .............................................................................................................................. 24

4.2 Mounting Bracket ........................................................................................................................... 25

4.3 Water Cooled Housing ................................................................................................................... 26

4.4 Rail Mount Adapter for Electronic box ............................................................................................ 27

5 Electrical Installation ............................................................................................................................. 28

5.1 Cable Connections ......................................................................................................................... 28

5.2 Ground Connection ........................................................................................................................ 32

5.3 Sensing head Calibration Code ..................................................................................................... 33

6 Outputs and Inputs ................................................................................................................................ 34

6.1 Analog Output ................................................................................................................................ 34

-Table of Contents 5-

6.2 Digital Interface .............................................................................................................................. 35

6.3 Functional Inputs ............................................................................................................................ 35

6.4 Alarms ............................................................................................................................................ 36

7 Operating ................................................................................................................................................ 37

7.1 Sensor Setup .................................................................................................................................. 37

8 Sighting ................................................................................................................................................... 43

8.1 Focusing and Video Sighting ......................................................................................................... 44

8.2 Error messages .............................................................................................................................. 45

9 Software CompactConnect ................................................................................................................... 46

9.1 Installation ...................................................................................................................................... 46

9.2 Communication Settings ................................................................................................................ 47

10 Basics of Infrared Thermometry........................................................................................................... 49

11 Emissivity ............................................................................................................................................... 50

11.1 Definition......................................................................................................................................... 50

-6 -

11.2 Determination of unknown Emissivities .......................................................................................... 50

11.3 Characteristic Emissivities.............................................................................................................. 51

Appendix A – Emissivity Table Metals ......................................................................................................... 52

Appendix B – Emissivity Table Non Metals ................................................................................................. 54

Appendix C – Smart Averaging ..................................................................................................................... 55

Appendix D – Declaration of Conformity ..................................................................................................... 56

-General Information 7-

The CTvideo sensing head is a sensitive optical system. Please use only the thread for
mechanical installation.

 Avoid abrupt changes of the ambient temperature.
 Avoid mechanical violence on the head – this may destroy the system (expiry of warranty).

 If you have any problems or questions, please contact our service department.

Read the manual carefully before the initial start-up. The producer reserves the right to change
the herein described specifications in case of technical advance of the product.

1 General Information

1.1 Description

Thank you for choosing the optris® CTvideo infrared thermometer.
The sensors of the optris CTvideo series are noncontact infrared temperature sensors.
They calculate the surface temperature based on the emitted infrared energy of objects [►10 Basics of
Infrared Thermometry]. The alignment of the sensor can be done with the integrated video sighting and
crosshair laser aiming.
The sensor housing of the CTvideo head is made of stainless steel (IP65/ NEMA-4 rating) – the sensor
electronics is placed in a separate box made of die casting zinc.

-8 -

► All accessories can be ordered according to the referred part numbers in brackets [ ].

1.2 Warranty

Each single product passes through a quality process. Nevertheless, if failures occur please contact the
customer service at once. The warranty period covers 24 months starting on the delivery date. After the
warranty is expired the manufacturer guarantees additional 6 months warranty for all repaired or substituted
product components. Warranty does not apply to damages, which result from misuse or neglect. The
warranty also expires if you open the product. The manufacturer is not liable for consequential damage or in
case of a non-intended use of the product.
If a failure occurs during the warranty period the product will be replaced, calibrated or repaired without
further charges. The freight costs will be paid by the sender. The manufacturer reserves the right to
exchange components of the product instead of repairing it. If the failure results from misuse or neglect the
user has to pay for the repair. In that case you may ask for a cost estimate beforehand.

1.3 Scope of Supply

 CTvideo sensing head with connection cable and electronic box
 Mounting nut and mounting bracket (fixed)
 5 m USB cable
 Software CompactConnect
 Operators manual

-General Information 9-

Never use cleaning compounds which contain solvents (neither for the lens nor for the housing).

1.4 Maintenance

Lens cleaning: Blow off loose particles using clean compressed air. The lens surface can be cleaned with a

soft, humid tissue moistened with water or a water based glass cleaner.

-10 -

Model

Model code

Measurement
range

Spectral
response

Typical applications

CT video 1M
1ML

485 to 1050 °C

1,0 µm

Metals and ceramic surfaces
1MH

650 to 1800 °C

1MH1

800 to 2200 °C

CT video 2M
2ML

250 to 800 °C

1,6 µm

Metals and ceramic surfaces
2MH

385 to 1600 °C

2MH1

490 to 2000 °C

CT video 3M

3ML

50 to 400 °C

2,3 µm

Metals at low object temperatures
(ab 50 °C)

3MH

100 to 600 °C

3MH1

150 to 1000 °C

3MH2

200 to 1500 °C

3MH3

250 to 1800 °C

1.5 Model Overview

The sensors of the CTvideo series are available in the following basic versions:

In the following chapters of this manual you will find only the short model codes.
On the 1M, 2M, 3M models the whole measurement range is split into several sub ranges (L, H, H1 etc.).

-General Information 11-

Signal output object temperature

0-5 V

Emissivity

1,000

Transmissivity

1,000

Average time (AVG)

inactive

Smart Averaging

active

Peak hold

inactive

Valley hold

inactive

1ML

1MH

1MH1

2ML

2MH

2MH1

3ML

3MH

3MH1

Lower limit temperature range [°C]

485

650

800

250

385

490

50

100

150

Upper limit temperature range [°C]

1050

1800

2200

800

1600

2000

400

600

1000

Lower alarm limit [°C]
(normally closed)

600

800

1200

350

500

800

100

250

350

Upper alarm limit [°C]
(normally open)

900

1400

1600

600

1200

1400

300

500

600

1.6 Factory Default Settings

The unit has the following presetting at time of delivery:

-12 -

3MH2

3MH3

Lower limit temperature range [°C]

200

250

Upper limit temperature range [°C]

1500

1800

Lower alarm limit [°C]
(normally closed)

550

750

Upper alarm limit [°C]
(normally open)

1000

1200
Lower limit signal output

0 V

Upper limit signal output

5 V

Temperature unit

°C

Ambient temperature compensation

internal head temperature probe

Baudrate [kBaud]

115

Laser

inactive

Smart Averaging means a dynamic average adaptation at high signal edges.
[Activation via software only].
►Appendix C – Smart Averaging

-Technical Data 13-

Sensing head

Electronic box

Environmental rating

IP65 (NEMA-4)

Ambient temperature 1)

-20...70 °C

-20...85 °C

Storage temperature

-40...85 °C

Relative humidity

10...95 %, non condensing

Material

stainless steel

die casting zinc

Dimensions

116 mm x 50 mm, M48x1,5

89 mm x 70 mm x 30 mm

Weight

600 g

420 g

Cable length

3 m (standard), 5 m, 10 m

Cable diameter

5 mm

Ambient temperature cable
Cable sensing head-electronics

USB-cable

max. 80 °C [High temperature cable (optional): 180 °C]
max. 80 °C

Vibration

IEC 68-2-6: 3G, 11 – 200 Hz, any axis

Shock

IEC 68-2-27: 50G, 11 ms, any axis

Software (optional)

CompactConnect

2 Technical Data

2.1 General Specifications

1)

Laser will turn off automatically at ambient temperatures >50 °C. The functionality of the LCD display can be limited at ambient

temperatures below 0 °C.

-14 -

Power Supply

8–36 VDC

Current draw

max. 160 mA

Aiming laser

635 nm, 1 mW, On/ Off via programming keys or software

Video sighting

Digital (USB 2.0), 640 x 480 px, FOV 3.1° x 2.4°

Output/ analog

selectable: 0/ 4–20 mA, 0–5/ 10 V, thermocouple (J or K) or alarm output
(Signal source: object temperature)

Alarm output

Open collector output at Pin AL2 [24 V/ 50 mA]

Output impedances
mA

mV
Thermocouple

max. loop resistance 500 Ω (at 8-36 VDC)
min. 100 kΩ load impedance
20 Ω

Digital interface

USB 2.0

Functional inputs

F1-F3; software programmable for the following functions:

 external emissivity adjustment
 ambient temperature compensation
 trigger (reset of hold functions)

Input impedance F2 and F3: 43 kΩ

2.2 Electrical Specifications

-Technical Data 15-

1ML

1MH

1MH1

Temperature range (scalable)

485...1050 °C

650…1800 °C

800...2200 °C

Spectral range

1,0 µm

Optical resolution

150:1

300:1

System accuracy

1), 2), 3)

±(0,3 % of reading +2 °C)

Repeatability

1), 3)

±(0,1 % of reading +1 °C)

Temperature resolution (NETD)

0,1 K

Exposure time (90% signal) 4)

1 ms

Emissivity/ Gain

0,100...1,100 (adjustable via programming keys or software)

Transmissivity

0,100...1,100 (adjustable via programming keys or software)

Signal processing

Average, peak hold, valley hold (adjustable via programming keys or software)

2.3 Measurement Specifications [1M models]

1)

at ambient temperature 235 °C

2)

Accuracy for thermocouple output: ±2,5 °C or ±1 %

3)

 = 1/ Response time 1 s

4)

with dynamic adaptation at low signal levels

-16 -

2ML

2MH

2MH1

Temperature range (scalable)

250...800 °C

385…1600 °C

490...2000 °C

Spectral range

1,6 µm

Optical resolution

150:1

300:1

System accuracy

1), 2), 3)

±(0,3 % of reading +2 °C)

Repeatability

1), 3)

±(0,1 % of reading +1 °C)

Temperature resolution (NETD)

0,1 K

Exposure time (90% signal) 4)

1 ms

Emissivity/ Gain

0,100...1,100 (adjustable via programming keys or software)

Transmissivity

0,100...1,100 (adjustable via programming keys or software)

Signal processing

Average, peak hold, valley hold (adjustable via programming keys or software)

2.4 Measurement Specifications [2M models]

1)

at ambient temperature 235 °C

2)

Accuracy for thermocouple output: ±2,5 °C or ±1 %

3)

 = 1/ Response time 1 s

4)

with dynamic adaptation at low signal levels

-Technical Data 17-

3ML

3MH

3MH1

3MH2

3MH3

Temperature range (scalable)

50...400 °C 1)

100…600 °C

1)

150...1000 °C

200…1500 °C

250…1800 °C

Spectral range

2,3 µm

Optical resolution

60:1

100:1

300:1

System accuracy

2), 3), 4)

±(0,3 % of reading +2 °C)

Repeatability

2), 4)

±(0,1 % of reading +1 °C)

Temperature resolution (NETD) 4)

0,1 K

Exposure time (90 % signal) 5)

1 ms

Emissivity/ Gain

0,100...1,100 (adjustable via programming keys or software)

Transmissivity

0,100...1,100 (adjustable via programming keys or software)

Signal processing

Average, peak hold, valley hold (adjustable via programming keys or software)

2.5 Measurement Specifications [3M models]

1)

TObject > THead+25 °C

2)

at ambient temperature 235 °C

3)

Accuracy for thermocouple output: ±2,5 °C or ±1 %

4)

 = 1/ Response time 1 s

5)

with dynamic adaptation at low signal levels

-18 -

Optics

Focus adjustable in the range

SFV

200 mm till infinity

CFV

90 mm till 250 mm

The size of the measuring object and the optical resolution of the infrared thermometer
determine the maximum distance between sensing head and measuring object.
In order to prevent measuring errors the object should fill out the field of view of the optics
completely.
Consequently, the spot should at all times have at least the same size like the object or should
be smaller than that.

2.6 Optical Charts

The vario optics of the CTvideo allows a smooth focusing of the optics to the desired distance. The sensors
are available in two optic versions:

The following tables show the diameter of the measuring spot for some selected distances. The spot size
refers to 90 % of the radiation energy.
The distance is always measured from the front edge of the sensing head.

As an alternative to the optical diagrams, the spot size calculator can also be used on the optris website

http://www.optris.com/spot-size-calculator.

-Technical Data 19-

spot size mm 3,3 5,0 7,5 11,7 18,3 26,7 41,7 83,3
measurement distance mm 200 300 450 700 1100 1600 2500 5000

3ML: SF optics (D:S=60:1)

spot size mm 1,5 2,0 2,5 3,0 3,5 4,2
measurement distance mm 90 120 150 180 210 250

3ML: CF optics (D:S=60:1)

spot size mm 2,0 3,0 4,5 7,0 11,0 16,0 25,0 50,0
measurement distance mm 200 300 450 700 1100 1600 2500 5000

3MH: SF optics (D:S=100:1)

spot size mm 0,9 1,2 1,5 1,8 2,1 2,5
measurement distance mm 90 120 150 180 210 250

3MH: CF optics (D:S=100:1)

spot size mm 1,3 2,0 3,0 4,7 7,3 10,7 16,7 33,3
measurement distance mm 200 300 450 700 1100 1600 2500 5000

1ML/2ML: SF optics (D:S=150:1)

spot size mm 0,6 0,8 1,0 1,2 1,4 1,7
measurement distance mm 90 120 150 180 210 250

1ML/2ML: CF optics (D:S=150:1)

-20 -

spot size mm 0,7 1,0 1,5 2,3 3,7 5,3 8,3 16,7
measurement distance mm 200 300 450 700 1100 1600 2500 5000

1MH-H1/2MH-H1/3MH1-H3: SF optics (D:S=300:1)

spot size mm 0,3 0,4 0,5 0,6 0,7 0,8
measurement distance mm 90 120 150 180 210 250

1MH-H1/2MH-H1/3MH1-H3: CF optics (D:S=300:1)

-Mechanical Installation 21-

Make sure to keep the optical path clear of any obstacles.

3 Mechanical Installation

The CTvideo is equipped with a metric M48x1,5 thread and can be installed either directly via the sensor
thread or with help of the supplied mounting nut (standard) and fixed mounting bracket (standard) to a
mounting device available.

CTvideo sensing head (Basic version)

-22 -

CTvideo sensing head (High temperature version)

-Mechanical Installation 23-

For an exact alignment of the head to the
object please activate the integrated video
and/ or crosshair laser sighting.

[►7 Operating, 8 Sighting]

Mounting bracket, adjustable in one axis [ACCTLFB] – standard scope of supply

Electronic box

-24 -

The needed amount of air
(approx. 2...10 l/ min.) depends on the
application and the installation
conditions on-site.

4 Accessories

4.1 Air Purge Collar

The lens must be kept clean at all times from dust, smoke, fumes and other contaminants in order to avoid
reading errors. These effects can be reduced by using an air purge collar. Make sure to use oil-free,
technically clean air, only.

Air purge collar [ACCTLAP]
Hose connection: 6x8 mm
Thread (fitting): G 1/8 inch

-Accessories 25-

4.2 Mounting Bracket

Mounting bracket, adjustable in two axes [ACCTLAB]

This adjustable mounting bracket allows an adjustment of the sensor in two axis.

-26 -

To avoid condensation on the optics
an air purge collar is recommended.

Water flow rate: approx. 2 l/ min

(Cooling water temperature should not
exceed 30 °C)

4.3 Water Cooled Housing

Water cooled housing [ACCTLW]
Hose connection: 6x8 mm
Thread (fitting): G 1/8 inch

The sensing head can be used at ambient temperatures up to 70 °C without cooling. For applications, where
the ambient temperature can reach higher values, the usage of the optional water cooled housing is
recommended (operating temperature up to 175 °C). The sensor should be equipped with the optional high
temperature cables (operating temperature up to 180 °C).

-Accessories 27-

► All accessories can be ordered according to the referred part numbers in brackets [ ].

4.4 Rail Mount Adapter for Electronic box

With the rail mount adapter the CTvideo electronics can be mounted easily on a DIN rail (TS35) according
EN50022.

Rail mount adapter [ACCTRAIL]

-28 -

5 Electrical Installation

5.1 Cable Connections

The CTvideo sensing heads are equipped with connectors in the backplane. Therefore an opening of the
sensing head for assembling or disassembling is not necessary. An USB cable (5 m) is already connected
on the electronics and can be used for linking to a computer.

Basic version

The standard version of the CTvideo has a 12-pin connector which is
integrated in the sensors backplane. The connection to the electronics is
done by the blue sensor cable. Cable lengths of 3 m, 5 m and 10 m are
available.

High temperature version

The high temperature version of the CTvideo has two connectors
(7-pin and 5-pin) which are integrated in the sensor backplane. The
connection sensing head – electronics will be done in this case via:
a 7-core high temperature cable (sensor signals, laser) and
a 4-core high temperature cable (video signal).
Cable lengths of 3 m, 5 m and 10 m are available.

-Electrical Installation 29-

CTvideo Basic version

CTvideo High temperature version

-30 -

Please do never connect a supply voltage to the analog outputs as this will destroy the
output!
The CTvideo is not a 2-wire sensor!

Designation

+8..36 VDC Power supply
GND Ground (0 V) of power supply
GND Ground (0 V) of internal in- and outputs
AL2 Alarm 2 (Open collector output)
OUT-TC Analog output thermocouple (J or K)
OUT-mV/mA Analog output object temperature (mV or mA)
F1-F3 Functional inputs
GND Ground (0 V)
3V SW BLACK/ Power supply Laser (+)
GND GREY/ Ground Laser (–)

ORANGE Temperature probe head (NTC)
BLUE Head ground
PURPLE Head power
YELLOW Detector signal

Opened electronic box
with terminal connections

Power supply

Please use a separate, stabilized power supply unit with an output voltage of 8–36 VDC
which can supply 160 mA. The ripple should be max. 200 mV.
Please use shielded cables only for all power and data lines.
The sensor shield has to be grounded.

-Electrical Installation 31-

Use shielded cables only. The sensor shield has to be grounded.

Cable Assembling

The cable gland M12x1,5 allows the use of cables with a diameter of 3 to 5 mm.
Remove the isolation from the cable (40 mm power supply, 50 mm signal outputs, 60 mm functional inputs).
Cut the shield down to approximately 5 mm and spread the strands out. Extract about 4 mm of the wire
isolation and tin the wire ends.
Place the pressing screw, the rubber washer and the metal washers of the cable gland one after the other
onto the prepared cable end. Spread the strands and fix the shield between two of the metal washers. Insert
the cable into the cable gland until the limit stop. Screw the cap tight.
Every single wire may be connected to the according screw clamps according to their colors.

-32 -

5.2 Ground Connection

At the bottom side of the mainboard PCB you will find a connector (jumper) which has been placed from
factory side as shown in the picture [bottom and middle pin connected]. In this position the ground
connections (GND power supply/ outputs) are connected with the ground of the electronics housing.
To avoid ground loops and related signal interferences in industrial environments it might be necessary to
interrupt this connection. To do this please put the jumper in the opposite position [middle and top pin
connected].
If the thermocouple output is used the connection GND – housing should be interrupted generally.

CTvideo mainboard

-Electrical Installation 33-

After you have modified the head code a reset is necessary to activate the change.
[►7 Operating]

You will find the calibration code on a label fixed on the head. Please do not remove this label or
make sure the code is noted anywhere.

5.3 Sensing head Calibration Code

Every head has a specific calibration code, which is printed on the head. For a correct temperature
measurement and functionality of the sensor this calibration code must be stored into the electronic box.
The calibration code consists of five blocks with 4 characters each.

Example: EKJ0 – 0OUD – 0A1B – A17U – 93OZ
block1 block2 block3 block4 block5

For entering the code please press the Up and Down key (keep pressed) and then the Mode key.
The display shows HCODE and then the 4 signs of the first block. With Up and Down each sign can be
changed, Mode switches to the next sign or next block.

-34 -

Output signal

Range

Connection pin on
CTvideo board

Voltage

0 ... 5 V

OUT-mV/mA

Voltage

0 ... 10 V

OUT-mV/mA

Current

0 ... 20 mA

OUT-mV/mA

Current

4 ... 20 mA

OUT-mV/mA

Thermocouple

TC J

OUT-TC

Thermocouple

TC K

OUT-TC

According to the chosen output signal there are different connection pins on the mainboard
(OUT-mV/mA or OUT-TC).

6 Outputs and Inputs

6.1 Analog Output

This output is used for the object temperature. The selection of the output signal can be done via the
programming keys [►7 Operating]. The CompactConnect software allows the programming of output
channel 1 as an alarm output.

-Outputs and Inputs 35-

6.2 Digital Interface

The CTvideo sensors are equipped with an USB interface. The
interface board is located beside the LCD display. To uninstall the
board please disconnect both of the M3x5 screws. Please pay
attention to the correct positioning of the pin strip if you install the
board.

6.3 Functional Inputs

The three functional inputs F1 – F3 can be programmed with the CompactConnect software, only.

F1 (digital): trigger (a 0 V level on F1 resets the hold functions)
F2 (analog): external emissivity adjustment [0–10 V: 0 V ► =0,1; 9 V ► =1; 10 V ► =1,1]
F3 (analog): external compensation of ambient temperature/ the range is scalable via software
[0–10 V ► -40–900 °C / preset range: -20–200 °C]
F1-F3 (digital): emissivity (digital choice via table)

A non connected input represents:
F1=High | F2, F3=Low.

[High level: ≥ +3 V…+36 V | Low level: ≤ +0,4 V…–36 V]

-36 -

All alarms (alarm 1, alarm 2, output channel 1 and 2 if used as
alarm output) have a fixed hysterese of 2 K.

Both of these alarms will have
effect on the LCD color:

BLUE: alarm 1 active

RED: alarm 2 active

GREEN: no alarm active

6.4 Alarms

The CTvideo has the following Alarm
features:

Output channel 1

To activate the alarm function the output channel has to be switched into digital mode. For this purpose the
software CompactConnect is required.

Visual Alarms

These alarms will cause a change of the color of the LCD display and will also change the status of the
optional relays interface. In addition the Alarm 2 can be used as open collector output at pin AL2 on the
mainboard [24 V/ 50 mA].

From factory side the alarms are defined as follows:

Alarm 1 Norm. closed/ Low-Alarm
Alarm 2 Norm. open/ High-Alarm

Extended setup like definition as low or high alarm [via change of normally open/ closed], selection of the
signal source [T

Obj

, T

Head

, T

] can be done with the software CompactConnect.

Box

-Operating 37-

Factory Default Setting

To set the CTvideo back to the factory default settings,
please press at first the Down-key and then the Mode-key
and keep both pressed for approx. 3 seconds.
The display will show RESET for confirmation.

Pressing the Mode button again recalls the last called
function on the display. The signal processing features Peak

hold and Valley hold cannot be selected simultaneously.

7 Operating

After power up the unit the sensor starts an initializing routine for some seconds. During this time the display
will show INIT. After this procedure the object temperature is shown in the display. The display backlight
color changes according to the alarm settings [►6.4 Alarms].

7.1 Sensor Setup

The programming keys Mode, Up and Down enable the user to set the sensor on-site. The current
measuring value or the chosen feature is displayed. With Mode the operator obtains the chosen feature, with

Up and Down the functional parameters can be selected – a change of parameters will have immediate
effect. If no key is pressed for more than 10 seconds the display automatically shows the calculated object

temperature (according to the signal processing).

Display Mode [Sample] Adjustment Range

S ON

Laser Sighting [On]

ON/ OFF

142.3C

Object temperature (after signal processing) [142,3 °C] fixed

127CH

Head temperature [127 °C] fixed

25CB

Box temperature [25 °C] fixed

142CA

Current object temperature [142 °C] fixed

 MV5

Signal output channel 1 [0-5 V]

0-20 = 0–20 mA/  4-20 = 4–20 mA/  MV5 = 0–5 V/
 MV10 = 0-10 V/  TCJ = thermocouple type J/
 TCK = thermocouple type K

E0.970

Emissivity [0,970]

0,100 ... 1,100

T1.000

Transmissivity [1,000]

0,100 ... 1,100

A 0.2

Signal output Average [0,2 s]

A---- = inactive/ 0,1 … 999,9 s

P----

Signal output Peak hold [inactive]

P---- = inactive/ 0,1 … 999,9 s/ P oo oo oo oo = infinite

V----

Signal output Valley hold [inactive]

V---- = inactive/ 0,1 … 999,9 s/ V oo oo oo oo = infinite

u 0.0

Lower limit temperature range [0 °C]

depending on model/ inactive at TCJ- and TCK-output

n 500.0

Upper limit temperature range [500 °C]

depending on model/ inactive at TCJ- and TCK-output

[ 0.00

Lower limit signal output [0 V] according to the range of the selected output signal

] 5.00

Upper limit signal output [5 V] according to the range of the selected output signal

U °C

Temperature unit [°C]

°C/ °F

| 30.0

Lower alarm limit [30 °C]

depending on model

|| 100.0

Upper alarm limit [100 °C]

depending on model

XHEAD

Ambient temperature compensation [head temperature]

XHEAD = head temperature/ -40,0 … 900,0 °C (for LT) as
fixed value for compensation/ returning to XHEAD (head
temperature) by pressing Up and Down together

M 01

Multidrop adress [1] (only with RS485 interface)

01 … 32

B 9.6

Baud rate in kBaud [9,6]

9,6/ 19,2/ 38,4/ 57,6/ 115,2 kBaud

-38 -

-Operating 39-
S ON Activating (ON) and Deactivating (OFF) of the Sighting Laser. By pressing Up or Down the

laser can be switched on and off.
 MV5 Selection of the Output signal. By pressing Up or Down the different output signals can be

selected (see table).
E0.970 Setup of Emissivity. Pressing Up increases the value, Down decreases the value (also

valid for all further functions). The emissivity is a material constant factor to describe the
ability of the body to emit infrared energy [►11 Emissivity].

T1.000 Setup of Transmissivity. This function is used if an optical component (protective window,
additional optics e.g.) is mounted between sensor and object. The standard setting is

1.000 = 100 % (if no protective window etc. is used).
A 0.2 Setup of Average time. In this mode an arithmetic algorithm will be performed to smoothen

the signal. The set time is the time constant. This function can be combined with all other
post processing functions. The shortest value is 0,001 s and can be increased/ decreased
only by values of the power series of 2 (0,002, 0,004, 0,008, 0,016, 0,032, ...).
If the value is set to 0.0 the display will show --- (function deactivated).

P---- Setup of Peak hold. In this mode the sensor is waiting for descending signals. If the signal
descends the algorithm maintains the previous signal peak for the specified time.

After the hold time the signal will drop down to the second highest value or will descend by
1/8 of the difference between the previous peak and the minimum value during the hold time.
This value will be held again for the specified time. After this the signal will drop down with
slow time constant and will follow the current object temperature.
If the value is set to 0.0 the display will show --- (function deactivated).

-40 ­V---- Setup of Valley hold. In this mode the sensor waits for ascending signals. The definition of

the algorithm is according to the peak hold algorithm (inverted).
If the value is set to 0.0 the display will show --- (function deactivated).

Signal graph with P----

▬ TProcess with Peak Hold (Hold time = 1s)

▬ TActual without post processing

-Operating 41-

u 0.0 Setup of the Lower limit of temperature range. The minimum difference between lower
and upper limit is 20 K. If you set the lower limit to a value ≥ upper limit the upper limit will be
adjusted to [lower limit + 20 K] automatically.

n 500.0 Setup of the Upper limit of the temperature range. The minimum difference between
upper and lower limit is 20 K. The upper limit can only be set to a value = lower limit + 20 K.

[ 0.00 Setup of the Lower limit of the signal output. This setting allows an assignment of a

certain signal output level to the lower limit of the temperature range. The adjustment range
corresponds to the selected output mode (e.g. 0-5 V).

] 5.00 Setup of the Upper limit of the signal output. This setting allows an assignment of a
certain signal output level to the upper limit of the temperature range. The adjustment range
corresponds to the selected output mode (e.g. 0-5 V).

U °C Setup of the Temperature unit [°C or °F].
| 30.0 Setup of the Lower alarm limit. This value corresponds to Alarm 1 [►6.4 Alarms] and is

also used as threshold value for relay 1 (if the optional relay board is used).

|| 100.0 Setup of the Upper alarm limit. This value corresponds to Alarm 2 [►6.4 Alarms] and is

also used as threshold value for relay 2 (if the optional relay board is used).

XHEAD Setup of the Ambient temperature compensation. In dependence on the emissivity value
of the object a certain amount of ambient radiation will be reflected from the object surface.
To compensate this impact, this function allows the setup of a fixed value which represents
the ambient radiation.

-42 -

Especially if there is a big difference between the ambient temperature at the object and the
head temperature the use of Ambient temperature compensation is recommended.

If XHEAD is shown the ambient temperature value will be taken from the head-internal
probe.
To return to XHEAD please press Up and Down together.

M 01 Setup of the Multidrop address. In a RS485 network each sensor will need a specific
address. This menu item will only be shown if a RS485 interface board is plugged in.

B 9.6 Setup of the Baud rate for digital data transfer.

-Sighting 43-

Do not point the laser directly at the eyes of persons or animals! Do not stare into the laser
beam. Avoid indirect exposure via reflective surfaces!

The laser should only be used for sighting and positioning of the sensor. A permanent use of the
laser can reduce the lifetime of the laser diodes and also the measurement accuracy can be
affected.

8 Sighting

The CTvideo has an integrated video camera which is using the same optical channel than the IR detector.
In addition the sensor has a cross laser aiming which marks the center of the measurement spot at any
distance. The combination of video and laser sighting enables a perfect alignment of the sensor to the
object.

The laser can be activated/ deactivated via the programming keys on the unit or via the software. If the laser
is activated a yellow LED will shine (beside temperature display).

At ambient temperatures >50 °C the laser will be switched off automatically.

-44 -

8.1 Focusing and Video Sighting

On the back plane of the sensor you will find a rotary button for focusing of the
optics.
To set the focus to the desired measurement distance you have to connect
the sensor with a PC using the USB cable. Please start the CompactConnect
software. You will see the video beside the temperature-time diagram. The
position of the measurement spot is indicated by a circle inside the video
picture. The size of this circle is equivalent to the IR spot size.

By turning the rotary button clockwise you will change the focus in direction far. By turning
counterclockwise you will change the focus in direction close.

After a successful focusing please enter the measurement distance (distance sensor front – object) in the
according field in the software (underneath the video picture).

You will find a detailed description of the video
settings in the software description which you can
call via the menu [?/ Help...].

-Sighting 45-

8.2 Error messages

The display of the sensor can show the following error messages:

1. Digit:

0x No error
1x Head temperature probe short circuit to GND
2x Box temperature too low
4x Box temperature too high
6x Box temperature probe disconnected
8x Box temperature probe short circuit to GND

2. Digit:

x0 No error
x2 Object temperature too high
x4 Head temperature too low
x8 Head temperature too high
xC Head temperature probe disconnected

-46 -

Min. system requirements:

 Windows XP, Vista, 7, 8, 10
 USB interface
 Hard disc with at least 30 MByte free space
 At least 128 MByte RAM
 CD-ROM drive

You will find a detailed software manual on the CD.

9 Software CompactConnect

9.1 Installation

Insert the installation CD into the according drive on
your computer. If the autorun option is activated the
installation wizard will start automatically.
Otherwise please start CDsetup.exe from the CD­ROM. Follow the instructions of the wizard until the
installation is finished.

The installation wizard will place a launch icon on the desktop and in the start menu:
[Start]\Programs\CompactConnect.
If you want to uninstall the software from your system please use the uninstall icon in the start menu.

Main Features:

 Alignment of the sensor
 Graphic display for temperature trends and automatic data logging

and video snapshot generation for analysis and documentation

 Complete sensor setup and remote controlling
 Adjustment of signal processing functions
 Programming of outputs and functional inputs

-Software CompactConnect 47-

9.2 Communication Settings

Serial Interface

Baud rate: 9,6...115,2 kBaud (adjustable on the unit or via software)
Data bits: 8
Parity: none
Stop bits: 1
Flow control: off

Protocol

All sensors of the CTvideo series are using a binary protocol. Alternatively they can be switched to an ASCII
protocol. To get a fast communication the protocol has no additional overhead with CR, LR or ACK bytes.

ASCII protocol

To switch to the ASCII protocol please use the following command:

Decimal: 131
HEX: 0x83
Data, Answer: byte 1
Result: 0 – Binary protocol
1 – ASCII protocol

-48 -

Saving of parameter settings

After power on of the CTvideo sensor the flash mode is active. It means, changed parameter settings will be
saved in the internal Flash-EEPROM and will be kept also after the sensor is switched off.
In case settings should be changed quite often or continuously the flash mode can be switched off by using
the following command:

Decimal: 112
HEX: 0x70
Data, Answer: byte 1
Result: 0 – Data will not be written into the flash memory
1 – Data will be written into the flash memory

If the flash mode is deactivated, all settings will only be kept as long as the unit is powered. If the unit is
switched off and powered on again all previous settings are lost.
The command 0x71 will poll the current status.

You will find a detailed protocol and command description on the software CD CompactConnect in the
directory: \Commands.

-Basics of Infrared Thermometry 49-

10 Basics of Infrared Thermometry

Depending on the temperature each object emits a certain amount of infrared radiation. A change in the
temperature of the object is accompanied by a change in the intensity of the radiation. For the measurement
of “thermal radiation” infrared thermometry uses a wave-length ranging between 1 µm and 20 µm.
The intensity of the emitted radiation depends on the material. This material contingent constant is described
with the help of the emissivity which is a known value for most materials (►11 Emissivity).

Infrared thermometers are optoelectronic sensors. They calculate the surface temperature on the basis of
the emitted infrared radiation from an object. The most important feature of infrared thermometers is that
they enable the user to measure objects contactless. Consequently, these products help to measure the
temperature of inaccessible or moving objects without difficulties. Infrared thermometers basically consist of
the following components:

 lens
 spectral filter
 detector
 electronics (amplifier/ linearization/ signal processing)

The specifications of the lens decisively determine the optical path of the infrared thermometer, which is
characterized by the ratio Distance to Spot size.
The spectral filter selects the wavelength range, which is relevant for the temperature measurement. The
detector in cooperation with the processing electronics transforms the emitted infrared radiation into electrical
signals.

-50 -

11 Emissivity

11.1 Definition

The intensity of infrared radiation, which is emitted by each body, depends on the temperature as well as on
the radiation features of the surface material of the measuring object. The emissivity (ε – Epsilon) is used as
a material constant factor to describe the ability of the body to emit infrared energy. It can range between 0

and 100 %. A “blackbody” is the ideal radiation source with an emissivity of 1,0 whereas a mirror shows an

emissivity of 0,1.
If the emissivity chosen is too high, the infrared thermometer may display a temperature value which is much
lower than the real temperature – assuming the measuring object is warmer than its surroundings. A low
emissivity (reflective surfaces) carries the risk of inaccurate measuring results by interfering infrared radiation
emitted by background objects (flames, heating systems, chamottes). To minimize measuring errors in such
cases, the handling should be performed very carefully and the unit should be protected against reflecting
radiation sources.

11.2 Determination of unknown Emissivities

► First, determine the actual temperature of the measuring object with a thermocouple or contact sensor.

Second, measure the temperature with the infrared thermometer and modify the emissivity until the
displayed result corresponds to the actual temperature.

► If you monitor temperatures of up to 380 °C you may place a special plastic sticker (emissivity dots – part

number: ACLSED) onto the measuring object, which covers it completely. Now set the emissivity to 0,95

-Emissivity 51-

and take the temperature of the sticker. Afterwards, determine the temperature of the adjacent area on
the measuring object and adjust the emissivity according to the value of the temperature of the sticker.

► Cove a part of the surface of the measuring object with a black, flat paint with an emissivity of 0,98. Adjust

the emissivity of your infrared thermometer to 0,98 and take the temperature of the colored surface.
Afterwards, determine the temperature of a directly adjacent area and modify the emissivity until the
measured value corresponds to the temperature of the colored surface.

CAUTION: On all three methods the object temperature must be different from ambient temperature.

11.3 Characteristic Emissivities

In case none of the methods mentioned above help to determine the emissivity you may use the emissivity
tables ►Appendix A – Emissivity Table Metals and Appendix B – Emissivity Table Non Metals. These
are average values only. The actual emissivity of a material depends on the following factors:

 temperature
 measuring angle
 geometry of the surface
 thickness of the material
 constitution of the surface (polished, oxidized, rough, sandblast)
 spectral range of the measurement
 transmissivity (e.g. with thin films)

-52 -

1,0 µm 1,6 µm 5,1 µm 8-14 µm

Aluminium non oxidized 0,1-0,2 0,02-0,2 0,02-0,2 0,02-0,1

polished 0,1-0,2 0,02-0,1 0,02-0,1 0,02-0,1
roughened 0,2-0,8 0,2-0,6 0,1-0,4 0,1-0,3
oxidized 0,4 0,4 0,2-0,4 0,2-0,4

Brass polished 0,35 0,01-0,05 0,01-0,05 0,01-0,05

roughened 0,65 0,4 0,3 0,3
oxidized 0,6 0,6 0,5 0,5

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 0,2-0,9 0,5-0,8 0,4-0,8
Chrome 0,4 0,4 0,03-0,3 0,02-0,2
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 electro polished 0,2-0,5 0,25 0,15 0,15

sandblast 0,3-0,4 0,3-0,6 0,3-0,6 0,3-0,6

oxidized 0,4-0,9 0,6-0,9 0,6-0,9 0,7-0,95
Iron non oxidized 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

oxidized 0,7-0,9 0,5-0,9 0,6-0,9 0,5-0,9

forged, blunt 0,9 0,9 0,9 0,9

molten 0,35 0,4-0,6
Iron, casted non oxidized 0,35 0,3 0,25 0,2

oxidized 0,9 0,7-0,9 0,65-0,95 0,6-0,95

Material

typical Emissivity

Spectral response

Appendix A – Emissivity Table Metals

-Appendix A – Emissivity Table Metals 53-

1,0 µm 1,6 µm 5,1 µm 8-14 µm

Lead polished 0,35 0,05-0,2 0,05-0,2 0,05-0,1

roughened 0,65 0,6 0,4 0,4

oxidized 0,3-0,7 0,2-0,7 0,2-0,6
Magnesium 0,3-0,8 0,05-0,3 0,03-0,15 0,02-0,1
Mercury 0,05-0,15 0,05-0,15 0,05-0,15
Molybdenum non oxidized 0,25-0,35 0,1-0,3 0,1-0,15 0,1

oxidized 0,5-0,9 0,4-0,9 0,3-0,7 0,2-0,6
Monel (Ni-Cu) 0,3 0,2-0,6 0,1-0,5 0,1-0,14
Nickel electrolytic 0,2-0,4 0,1-0,3 0,1-0,15 0,05-0,15

oxidized 0,8-0,9 0,4-0,7 0,3-0,6 0,2-0,5
Platinum black 0,95 0,9 0,9
Silver 0,04 0,02 0,02 0,02
Steel polished plate 0,35 0,25 0,1 0,1

rustless 0,35 0,2-0,9 0,15-0,8 0,1-0,8

heavy plate 0,5-0,7 0,4-0,6

cold-rolled 0,8-0,9 0,8-0,9 0,8-0,9 0,7-0,9

oxidized 0,8-0,9 0,8-0,9 0,7-0,9 0,7-0,9
Tin non oxidized 0,25 0,1-0,3 0,05 0,05
Titanium polished 0,5-0,75 0,3-0,5 0,1-0,3 0,05-0,2

oxidized 0,6-0,8 0,5-0,7 0,5-0,6
Wolfram polished 0,35-0,4 0,1-0,3 0,05-0,25 0,03-0,1
Zinc polished 0,5 0,05 0,03 0,02

oxidized 0,6 0,15 0,1 0,1

Spectral response

Material

typical Emissivity

-54 -

1,0 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 non oxidized 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
Concrete 0,65 0,9 0,9 0,95
Glass plate 0,2 0,98 0,85

melt 0,4-0,9 0,9
Grit 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 alkaline 0,9-0,95
Paper any color 0,95 0,95
Plastic >50 µm non transparent 0,95 0,95
Rubber 0,9 0,95
Sand 0,9 0,9
Snow 0,9
Soil 0,9-0,98
Textiles 0,95 0,95
Water 0,93
Wood natural 0,9-0,95 0,9-0,95

Material

typical Emissivity

Spectral response

Appendix B – Emissivity Table Non Metals

-Appendix C – Smart Averaging 55-

Appendix C – Smart Averaging

The average function is generally used to smoothen the output signal. With the adjustable parameter time
this function can be optimal adjusted to the respective application. One disadvantage of the average function
is that fast temperature peaks which are caused by dynamic events are subjected to the same averaging
time. Therefore those peaks can only be seen with a delay on the signal output.
The function Smart Averaging eliminates this disadvantage by passing those fast events without averaging
directly through to the signal output.

Signal graph with Smart Averaging function Signal graph without Smart Averaging function

-56 -

Appendix D – Declaration of Conformity

optris CTvideo – E2017-08-A