optris CSmicro LT15, CSmicro LT02, CSmicro 2W LT15, CSmicro 3ML, CSmicro 3MH Operator's Manual

optris

®

CSmicro LT/ 2WLT/ 2W2M/ 3M

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Infrared Thermometer

Operators manual

Messtechnik Schaffhausen GmbH

Mühlenstrasse 4, CH

-

8260 Stein am Rhein

Telefon

[phone]

Telefax [phone]
www.mts.ch, e-mail: [e-mail]

Messen Prüfen

Automatisieren www.mts.ch

MTS

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References to other chapters are marked as [► ...].

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.

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Content

Page Page
Description 3 Maximum Loop Impedance [2W] 40

Scope of Supply 3 Digital Mode 41
Maintenance 3 Alarm Output 43
Cautions 4 Software CompactConnect 44
Model Overview 4 Installation 44
Factory Default Settings 5 Communication Settings 45
Technical Data 9 Digital Command Set 46
General Specifications 9 Basics of Infrared Thermometry 48
Electrical Specifications 10 Emissivity 49
Pin Configuration 12 Definition 49
Measurement Specifications 13 Determination of unknown Emissivities 49
Optical Charts 16 Characteristic Emissivities 50
CF Lens and Protective Window 26 Appendix A – Emissivity Table Metals 51
LED Functions 28 Appendix B – Emissivity Table Non Metals 53
Automatic Aiming Support 28 Appendix C – Smart Averaging 54
Self Diagnostic 29 Appendix D – Direct Connection to an RS232
Temperature Code Indication 30 interface 55
Mechanical Installation 31 Appendix E – Declarations of Conformity 56
Mounting Accessories [LT/ 3M/ 2WLT/ 2W2M] 32
Mounting Accessories [2WhsLT] 33
Air Purge Collars [LT/ 3M/ 2WLT/ 2W2M] 34
Air Purge Collar [2WhsLT] 35
Further Accessories 36

Electrical Installation 38

Analog Mode 38

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

Description

The sensors of the optris CSmicro series are noncontact infrared thermometers.
They calculate the surface temperature based on the emitted infrared energy of objects [► Basics of
Infrared Thermometry].
The sensor housing of the optris CSmicro is made of stainless steel (IP65/ NEMA-4 rating) – the sensor
electronics is integrated inside the connection cable.

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.

Scope of Supply

 CSmicro incl. connection cable
 Mounting nut
 Operators manual

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.

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Cautions

Avoid abrupt changes of the ambient temperature.
In case of problems or questions which may arise when you use the sensor, please contact our service
department.

Model Overview

The sensors of the CSmicro series are available in the following versions:

Series Models Measurement range spectral Output Optics Specialty
response

LT LT15 -40 to 1030 °C 8-14 µm 0-5/ 10 V 15:1
LT02 -40 to 1030 °C 8-14 µm 0-5/ 10 V 2:1

3M 3ML 50...350 °C 2,3 µm 0-5/ 10 V 22:1

3MH 100 to 600 °C 2,3 µm 0-5/ 10 V 33:1

2WLT 2W LT15 -40 to 1030 °C 8-14 µm 4-20 mA 15:1
2W LT15H -40 to 1030 °C 8-14 µm 4-20 mA 15:1 T

amb

max. 180 °C

2W LT22H -40 to 1030 °C 8-14 µm 4-20 mA 22:1 T

amb

max. 180 °C

2W hsLT -20 to 150 °C 8-14 µm 4-20 mA 15:1 0,025 K resolution
2W2M 2W 2ML 250 to 800 °C 1,6 µm 4-20 mA 40:1

2W 2MH 385 to 1600 °C 1,6 µm 4-20 mA 75:1

The sensors CSmicro are sensitive optical systems. Please use only the thread for mechanical installation.
Avoid mechanical violence on the head – this may destroy the system (expiry of warranty).

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Factory Default Settings

The units have the following presetting at time of delivery:

CSmicro LT15/ LT02 3ML 3MH e

Temperature range: 0...350 °C 50...350 °C 100...600 °C
Output: 0...3,5 V 0...5 V 0…5 V
Emissivity: 0,950 0,950 0,950
Transmission: 1,000 1,000 1,000
Average time: 0,3 s 0,1 s 0,1 s
Smart averaging: active active active
Smart Averaging hysteresis: 2 °C 2 °C 2 °C

Ambient temperature source: internal (head)
Status-LED function: Self diagnostic
Input (IN/ OUT/ green): inactive
Output (OUT/ yellow): mV output
Vcc adjust: inactive
Signal processing: Hold mode: off
Calibration: Gain 1,000/ Offset 0,0
Failsafe: inactive

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CSmicro 2W LT15 LT15H LT22H hsLT e

Temperature range: 0...350 °C 0...500 °C 0...500 °C -20...150 °C
Output: 4...20 mA 4...20 mA 4...20 mA 4...20 mA
Emissivity: 0,950 0,950 0,950 0,950
Transmission: 1,000 1,000 1,000 1,000
Average time: 0,3 s 0,3 s 0,3 s 0,3 s
Smart averaging: active active active active
Smart Averaging hysteresis: 2 °C 2 °C 2 °C 2 °C

Ambient temperature source: internal (head)
Status-LED function: Self diagnostic
Input (IN/ OUT/ green): Communication input
Output (OUT/ yellow): Communication output
Vcc adjust: inactive
Signal processing: Hold mode: off
Calibration: Gain 1,000/ Offset 0,0
Failsafe: inactive

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CSmicro 2W 2ML 2MH e

Temperature range: 250...800 °C 385...1600 °C
Output: 4...20 mA 4...20 mA
Emissivity: 1,000 1,000
Transmission: 1,000 1,000
Average time: 0,01 s 0,01 s
Smart averaging: active active
Smart Averaging hysteresis: 2 °C 2 °C

Ambient temperature source: internal (head)
Status-LED function: Self diagnostic
Input (IN/ OUT/ green): Communication input
Output (OUT/ yellow): Communication output
Vcc adjust: inactive
Signal processing: Hold mode: off
Calibration: Gain 1,000/ Offset 0,0
Failsafe: inactive

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

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For a usage of the CSmicro LT for online maintenance applications (in electrical cabinets e.g.) the following
recommend settings are already included in the factory default setting (but not active):

OUT At 3-state output the following settings are default:
Pre-alarm difference: 2 °C
No alarm level: 8 V
Pre-alarm level: 5 V
Alarm level: 0 V
Service voltage: 10 V

IN/ OUT: At Alarm output (open collector) the following settings are default:
Mode: normally closed
Temp code output: activated (for values above alarm level)
Range settings: 0 °C = 0 %/ 100 °C = 100 %

Vcc adjust: If activated the following settings are default:
Output voltage range: 0-10 V
Difference mode: activated

Alarm level Alarm value (IN/ OUT pin) Vcc

1 40 °C 11 V
2 45 °C 12 V
3 50 °C 13 V
4 55 °C 14 V
5 60 °C 15 V
6 65 °C 16 V
7 70 °C 17 V
8 75 °C 18 V
9 80 °C 19 V

10 85 °C 20 V

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Technical Data

General Specifications

Environmental rating IP65 (NEMA-4)
Ambient temperature Sensing head: see: Measurement Specifications
Electronics (inside cable): -20...80 °C [LT/ 3M]

-20...75 °C 1) [2W]
Storage temperature -40...85 °C
Relative humidity 10...95 %, non condensing

Material Stainless steel
Dimensions 28 mm x 14 mm (head) [LT/ 3M/ 2WLT/ 2W2M]
55 mm x 29,5 mm (head incl. massive housing) [2WhsLT]
35 mm x 12 mm (electronics)
Weight 42 g [LT/ 3M/ 2WLT/ 2W2M]
200 g [2WhsLT]
Cable length head – electronics 0,5 m (standard), 3 m, 6 m [LT/ 3M 2)/ 2WLT/ 2W2M]
after electronics 0,5 m (standard), 3 m, [LT/ 3M/ 2WLT/ 2W2M]

head – electronics 0,5 m [2WhsLT]

after electronics 3,0 m [2WhsLT]
Cable diameter 2,8 mm (head – electronics)
4,3 mm (electronics – end of cable)

Vibration IEC 68-2-6: 3G, 11 – 200 Hz, any axis
Shock IEC 68-2-27: 50G, 11 ms, any axis
Software optional

1)

for Vcc (supply voltage) 5-12 VDC/ at Vcc > 12 VDC the max. ambient temperature of the electronics is 65 °C

2)

6 m cable length not available for 3M version

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Electrical Specifications

Used pin Function LT / 3M 2W _
OUT IN/ OUT
x Analog 0-5 V 1) or 0-10 V 2)/ scalable 4-20 mA/ scalable (current loop

between Power and GND pin)
x Alarm output voltage adjustable; N/O or N/C output current adjustable; N/O
or N/C (current loop between
Power and GND pin)
x Alarm 3-state alarm output (three voltage level ­ for no alarm, pre-alarm, alarm)
x Alarm programmable open collector output programmable open collector
[0-30 V DC/ 50 mA] 4) output [0-30 V DC/ 500 mA]
x Temp. Code Temp. Code Output (open collector) Temp. Code Output (open
[0-30 V DC/ 50 mA]

4)

collector) [0-30 V DC/ 500 mA]

x Input programmable functions: programmable functions:

-external emissivity adjustment -triggered signal output and

-ambient temperature compensation peak hold function 5)

-triggered signal output and peak hold -Reset of hold function 7)
function 5)

-Reset of hold function 6)
x x Serial digital 3) uni- (burst mode) or bidirectional uni- (burst mode) or
bidirectional

Output impedances min. 10 kΩ load impedance max. 1000 Ω loop impedance
Current draw 9 mA 4-20 mA
Power supply 5...30 VDC 5...30 VDC

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Status LED green LED with programmable functions:

 alarm indication (threshold independent from alarm outputs)
 automatic aiming support
 self diagnostics
 temperature code indication

Vcc adjust mode 10 adjustable emissivity and alarm values by variation of supply voltage/
Service mode for analog output [LT only]

1)

0...4,6 V at supply voltage 5 VDC; also valid for alarm output

2)

only at supply voltage ≥ 11 V

3)

inverted RS232, TTL, 9,6 kBaud

4)

500 mA if the mV output is not used

5)

High level: > 0,8 V/ Low level: < 0,8 V

6)

Reset of peak or valley hold by High level at IN/ OUT pin (Low: open or GND / High: >2,4 V...11 V)

7)

Reset of peak or valley hold by Low level at IN/ OUT pin (Low: GND / High: open or >1 V...11 V)

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Pin Configuration

white Power Power supply
yellow OUT Analog output/ TxD/ Alarm output
green IN/ OUT Analog input/ RxD/ Open collector output
brown GND Ground ()
black Shield Shield

white Power Current loop (+)/ Alarm output
yellow OUT TxD
green IN/ OUT Trigger input/ RxD/ Open collector output
brown GND Current loop (-)/ Ground ()
black Shield Shield

You will find a detailed description of the different sensor connections in chapter ► Electrical Installation.

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Measurement Specifications

LT15/ LT02 3ML 3MH e

Temperature range IR -40...1030 °C 50...350 °C 4) 100...600 °C 4)
(scalable via software)
Ambient temperature (sensing head) -20...120 °C -20...85 °C -20...85 °C
Spectral range 8...14 µm 2,3 µm 2,3 µm
Optical resolution 15:1/ 2:1 22:1 33:1
CF-lens (optional) 0,8 mm@ 10 mm/ - ­ 2,5 mm@ 23 mm
CF optics (built-in) - 5,0 mm@ 110 mm 3,4 mm@ 110 mm
CF1 optics (built-in) - 1,5 mm@ 30mm 1,0 mm@ 30 mm

Accuracy1) ±1,0 °C or ±1,0 % 2) ------- ±(0,3 % of reading + 2 °C) ------­Repeatability1) ±0,5 °C or ±0,5 % 2) ------- ±(0,1 % of reading + 1 °C) ------­Temperature coefficient 3) ±0,05 K/ K or ±0,05 %/ K (whichever is greater)
Temperature resolution 0,1 K 0,1 K 0,1 K
Response time 30 ms (90 % signal) 25 ms (90 % signal) 25 ms (90 % signal)
Warm-up time 10 min - -

Emissivity/ Gain 0,100...1,100 (adjustable via software)
Transmissivity 0,100...1,000 (adjustable via software)
Interface (optional) USB programming interface
Signal processing Average, Peak hold, Valley hold (adjustable via software)

1)

at ambient temperature 235 °C, whichever is greater; Epsilon = 1; Response time 1 s

2)

at object temperatures > 23 °C

3)

for ambient temperatures <18 °C and >28 °C

4)

TObject > THead+25 °C

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2WLT15 2WLT15H 2WLT22H e

Temperature range IR -40...1030 °C -40...1030 °C -40...1030 °C
(scalable via software)
Ambient temperature (sensing head) -20...120 °C -20...120 °C -20...180 °C
Spectral range 8...14 µm 8...14 µm 8...14 µm
Optical resolution 15:1 15:1 22:1
CF-lens (optional) 0,8 mm@ 10 mm/ 0,8 mm@ 10 mm 0,6 mm@ 10 mm

Accuracy1) ±1,0 °C or ±1,0 % 2) ±1,0 °C or ±1,0 % 2) ±1,0 °C or ±1,0 % 2)
Repeatability1) ±0,5 °C or ±0,5 % 2) ±0,5 °C or ±0,5 % 2) ±0,5 °C or ±0,5 % 2)
Temperature coefficient 3) ±0,05 K/ K or ±0,05 %/ K (whichever is greater)
Temperature resolution 0,1 K 0,1 K 0,1 K
Response time 30 ms (90 % signal) 150 ms (90 % signal) 150 ms (90% signal)
Warm-up time 10 min 10 min 10 min

Emissivity/ Gain 0,100...1,100 (adjustable via software)
Transmissivity 0,100...1,000 (adjustable via software)
Interface (optional) USB programming interface
Signal processing Average, Peak hold, Valley hold (adjustable via software)

1)

at ambient temperature 235 °C, whichever is greater; Epsilon = 1; Response time 1 s

2)

at object temperatures > 23 °C

3)

for ambient temperatures <18 °C and >28 °C

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2WhsLT 2W2ML 2W2MH e

Temperature range IR -20...150 °C 250...800 °C 385...1600 °C
(scalable via software)
Ambient temperature (sensing head) -20...75 °C -20...125 °C -20...125 °C
Spectral range 8...14 µm 1,6 µm 1,6 µm
Optical resolution 15:1 40:1 75:1

Accuracy1) ±1 °C or ±1 %

3)

----- ±(0,3 % of reading + 2 °C) 2) -----

Repeatability1) ±0,3 °C or ±0,3 %

3)

----- ±(0,1 % of reading + 1 °C) 2) ----­Temperature coefficient 5) ±0,05 K/ K or ±0,05 %/ K (whichever is greater)
Temperature resolution 0,025 K

3) 4)

0,1 K 4) 0,1 K 4)
Response time 150 ms (90 % signal) 10 ms (90 % signal) 10 ms (90 % signal)
Warm-up time 10 min - -

Emissivity/ Gain 0,100...1,100 (adjustable via software)
Transmissivity 0,100...1,000 (adjustable via software)
Interface (optional) USB programming interface
Signal processing Average, Peak hold, Valley hold (adjustable via software)

1)

at ambient temperature 235 °C; Epsilon = 1; Response time = 1 s

2)

at object temperatures > 450 °C

3)

at object temperatures > 20 °C

4)

at time constants > 0,2 s

5)

for ambient temperatures <18 °C and >28 °C

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Optical Charts

The following optical charts show the diameter of the measuring spot in dependence on the distance
between measuring object and sensing head. The spot size refers to 90 % of the radiation energy.
The distance is always measured from the front edge of the sensor housing/ CF-lens holder/ air purge.

D = Distance from front of the sensing head to the object
S = Spot size
The D:S ratio is valid for the focus point.

LT15/ 2WLT15/ 2WLT15H/ 2WhsLT D:S = 15:1

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.

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LT15CF/ 2WLT15CF/ 2WLT15HCF D:S = 15:1/ D:S Far field = 5:1

LT15/ 2WLT15/ 2WLT15H/ 2WhsLT with CF lens (0,8 mm@ 10 mm)/ D:S Far field = 1,4:1

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2WLT22H D:S = 22:1

LT22CF/ 2WLT22HCF D:S = 22:1/ D:S Far field = 6:1

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2WLT22H with CF lens (0,6 mm@ 10 mm)/ D:S Far field = 1,5:1

LT02/ 2WLT02 D:S = 2:1

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LT02/ 2WLT02 with CF lens (2,5 mm@ 23 mm)/ D:S Far field = 2,5:1

2W2ML SF D:S = 40:1

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2W2ML CF D:S = 40:1/ D:S Far field = 12:1

2W2MH SF D:S = 75:1

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2W2MH CF D:S = 75:1/ D:S Far field = 14:1

3ML SF D:S = 22:1

If the CF lens (ACCTCFHT or ACCTCFHTE) is used in connection with 2W2M units (SF or CF optics) the focus is
shifted to a distance of 11 mm.

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3ML CF D:S = 22:1/ D:S Far field = 9:1

3ML CF1 D:S = 22:1/ D:S Far field = 3,5:1

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3MH SF D:S = 33:1

3MH CF D:S = 33:1/ D:S Far field = 11:1

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3MH CF1 D:S = 33:1/ D:S Far field = 4:1

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Transmission values if the CF lens
is used (average values):

LT 0,78
2M 0,87
3M 0,92

CF Lens and Protective Window

The optional CF lens allows the measurement of very small objects.
The minimum spot size depends on the used sensing head. The
distance is always measured from the front edge of the CF lens
holder or laminar air purge collar. The installation on the sensing
head will be done by turning the CF lens until end stop. To combine
it with the 2WhsLT model please use the version with external
thread M12x1.

Versions Overview:
ACCTCF CF lens for installation on sensing head [LT/ 2WLT]

ACCTCFHT CF lens for installation on sensing head [2W2M]
ACCTCFE CF lens with external thread for installation in massive housing [LT/ 2WLT]
ACCTCFHTE CF lens with external thread for installation in massive housing [2W2M]

For protection of the sensing head optics a protective window is available. The mechanical dimensions are
equal to the CF lens. It is available in the following versions:

ACCTPW Protective window for installation on sensing head [LT/ 2WLT]
ACCTPWHT Protective window for installation on sensing head [2W2M]
ACCTPWE Protective window with external thread for installation
in massive housing [LT/ 2WLT]
ACCTPWHTE Protective window with external thread for installation
in massive housing [2W2M]

Transmission values if the
protective window is used (average
values):

LT 0,83
2M/ 3M 0,93

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CF lens: Laminar air purge with integrated CF lens with external thread:
ACCTCF/ ACCTCFHT CF lens: ACCTCFE/ ACCTCFHTE
Protective window: ACCTAPLCF/ ACCTAPLCFHT Protective window with external
ACCTPW/ ACCTPWHT thread:
ACCTPWE/ ACCTPWHTE

To change the transmission value the optional USB-Kit (including software) is necessary.

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LED Functions

The green LED can be programmed for the following functions. For the programming the USB adapter
cable incl. software (option) is necessary. The factory default setting for the LED is self diagnostic.

LED Alarm LED lights up if the object temperature exceeds or deceeds an alarm
threshold
Automatic aiming support Sighting feature for an accurate aiming of the CS to hot or cold objects
Self diagnostic LED is indicating different states of the sensor
Temperature Code indication Indication of the object temperature via the LED
Off LED deactivated

Automatic Aiming Support

The automatic aiming support helps to adjust the unit to an object which has a temperature different to the
background. If this function is activated via software the sensor is looking for the highest object temperature;
means the threshold value for activating the LED will be automatically tuned.
This works also if the sensor is aimed at a new object (with probably colder temperature). After expiration of
a certain reset time (default setting: 10s) the sensor will adjust the threshold level for activation of the LED
new.

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Self Diagnostic

With this function the current status of the sensor will be indicated by different flash modes of the LED.

Sensor overheated: The internal temperature probes have detected an invalid high internal
temperature of the CSmicro.

Out of measuring range: The object temperature is out of measuring range.
Not stable: The internal temperature probes have detected an unequally internal

temperature of the CSmicro.
Alarm fault: Current through the switching transistor of the open-collector output is too

high.

If activated, the LED will show one out of five possible states of
the sensor:

Status LED mode
Normal intermittent off - - - -

Sensor overheated fast flash - - - - - - - - - - - - ­Out of measuring range double flash -- -- -- -- -- -- -­Not stable intermittent on ––– ––– ––– –––
Alarm fault always on –––––––––––––––

At a supply voltage (Vcc) ≥ 12 V it

takes about 5 minutes until the sensor
works in a stable mode.
Therefore, after switching on the unit,
the LED will show a not stable state
for up to 5 minutes.

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Temperature Code Indication

With this function the current measured object temperature will be indicated as percentage value by long and
short flashing of the LED.
At a range setting of 0-100 °C  0-100% the LED flashing indicates the temperature in °C.

Examples
87 °C 8-times long flashing indicates 87

and afterwards 7-times short flashing indicates 87
31 °C 3-times long flashing indicates 31

and afterwards 1-time short flashing indicates 31
8 °C 10-times long flashing indicates 08

and afterwards 8-times short flashing indicates 08
20 °C 2-times long flashing indicates 20

and afterwards 10-times short flashing indicates 20

Long flashing  first digit: xx
Short flashing  second digit: xx
10-times long flashing  first digit=0: 0x
10-times short flashing  second digit=0: x0

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Mechanical Installation

The CSmicro is equipped with a metric M12x1 thread and can be installed either directly via the sensor
thread or with the help of the hex nut (standard) to the mounting bracket available. The CSmicro 2WhsLT will
be delivered with the massive housing and can be installed via the M18x1-thread.

Sensing head [LT/ 3M/ 2WLT/ 2W2M] 1) Sensing head [2WhsLT]

1)

On the LTxxCF and 3MxCF1 models the total length of the sensing head is 32 mm instead of 28 mm.

The sensors CSmicro are sensitive optical systems. Please use only the thread for mechanical installation. Avoid
mechanical violence on the head – this may destroy the system (expiry of warranty).

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Mounting Accessories [LT/ 3M/ 2WLT/ 2W2M]

Mounting bracket, adjustable in Mounting bolt with M12x1 thread, Mounting fork with M12x1
one axis [ACCTFB] adjustable in one axis [ACCTMB] thread, adjustable in 2 axes

[ACCTMG]

Mounting bracket, adjustable
in two axes [ACCTAB]

The Mounting fork can be
combined with the

Mounting bracket
[ACCTFB] using the M12x1

thread.

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Mounting Accessories [2WhsLT]

Mounting bracket, adjustable in one axis for 2WhsLT [ACCTFBMH]

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Air Purge Collars [LT/ 3M/ 2WLT/ 2W2M]

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.

Standard air purge collar; Laminar air purge collar – the sideward
fits to the mounting bracket; air outlet prevents a cooling down of the object
hose connection: 3x5 mm in short distances; hose connection: 3x5 mm
[ACCSAP]/ for heads with a [ACCTAPL]
D:S ratio ≥ 10:1

A combination of the
Laminar air purge collar
with the bottom section of
the Mounting fork allows
an adjustment in two axes.
[ACCTAPL+ACCTMG]

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

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Air Purge Collar [2WhsLT]

Air purge collar for 2WhsLT head [ACCTAPMH]

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Further Accessories

Right angle mirror USB-Kit: USB programming adaptor
Enables measurement incl. terminal block and software CD
with 90° angle [ACCSUSBK]
[ACCTRAM]

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Tilt Assembly

With this mounting accessory a fine adjustment of the
CS with an off-axis angle +/- 6,5° is possible.

Tilt assembly [ACCTTAS]

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

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Use a separate, stabilized power supply
with an output voltage in the range 5-30 V
DC. The residual ripple of the power supply
should be max. 200 mV.
For all power and data lines use shielded
cables only.

Electrical Installation

Analog Mode

CSmicro LT/ 3M as analog device (mV output on OUT pin)

CSmicro 2W as analog device (mA two-wire-output)

The maximum loop impedance is 1000 Ω.

The output impedance must be ≥ 10kΩ.

IMPORTANT:
The shield [black] on the CSmicro
(exception: CSM 2WLTxxH) is not
connected to GND [brown].
It is necessary to connect the shield to
ground or GND (whichever works best)!

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CSmicro 2W LTxxH as analog device (mA two-wire-output) – current measurement in GND- (Loop-)
line

On the models LT15H and LT22H (sensing heads for ambient temperatures up to 180 °C) and on the special
versions for 250 °C ambient temperature the GND and Shield is connected inside the electronics.

Special note for current measurement in GND- (Loop-) line:

In this case the sensing head must be installed isolated from ground. A connection of the GND or Shield wire
to earth is also not allowed.

For a current measurement in the Power- (Loop+) line the drawing CSmicro 2W as analog device is valid.
The Shield should be connected to ground or GND.

The maximum loop impedance is 1000 Ω.

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Maximum Loop Impedance [2W models]

The maximum impedance of the current loop depends on the supply voltage level:

0

100

200

300

400

500

600

700

800

900

1000

5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30

Supply voltage (V)

Loop resistance (Ohm)

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Digital Mode

For a digital communication the optional USB programming kit is
required. Please connect each wire of the USB adapter cable with
the same coloured wire of the sensor cable by using the terminal
block. Press with a screw driver as shown in the picture to loose a
contact.

The sensor is offering two ways of digital communication:

 bidirectional communication (sending and receiving data)
 unidirectional communication (burst mode – the sensor is sending data only)

Digital mode [LT/ 3M]

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Analog + Digital mode combined [2W]

The two-wire models are able to work in the digital mode and simultaneously as analog device (4-20 mA).
In this case the sensor will be powered by the USB interface (5 V).

Direct connection to an RS232 interface on the computer

For a bidirectional RS232 connection of the sensor the following interface circuit can be used: MAX3381E
(manufacturer: Maxim) ► Appendix D:

Model CSv1/ CSMv1 CSv2 CSMv2 CSM2W/ CX
UART voltage (RxD) 5 V 3,3 V 3,3 V 3,3 V
UART voltage (TxD) 5 V 2,5 V 2,5 V 2,5 V

previous sensor versions:
CSv1 CS/ version 1 (→ 12/2010)
CSMv1 CSmicro/ version 1 (→ 09/2011)

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Alarm Output

Open collector output [LT/ 3M]

The open collector output is an additional alarm output on the CSmicro and can control an external relay e.g.
In addition the analog output can be used simultaneously.

Open collector output [2W]

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Minimum system requirements:

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

Software CompactConnect

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:

 Graphic display for temperature trends and automatic data logging

for analysis and documentation

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

You will find a detailed software manual on the CD.

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Communication Settings

Serial Interface

Baud rate: 9600 baud
Data bits: 8
Parity: none
Stop bits: 1
Flow control: off

Protocol

All sensors of the CSmicro series are using a binary protocol. To get a fast communication the protocol has
no additional overhead with CR, LR or ACK bytes.
To power the sensor the control signal „DTR“ has to be set.

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Digital Command Set

Commands CS/ CSmicro/ CX

Decimal HEX Binary/ ASCII Command Data Answer Result Unit

1 0x01 binary READ Temp - Target no byte1 byte2 = (byte1 x 256 + byte2 - 1000) / 10 °C
2 0x02 binary READ Temp - Head no byte1 byte2 = (byte1 x 256 + byte2 - 1000) / 10 °C
3 0x03 binary READ current Temp - Target no byte1 byte2 = (byte1 x 256 + byte2 - 1000) / 10 °C
4 0x04 binary READ Emissivity no byte1 byte2 = (byte1 x 256 + byte2) / 1000
5 0x05 binary READ Transmission no byte1 byte2 = (byte1 x 256 + byte2) / 1000

9 0x09 binary READ Processor Temperature no byte1 = (byte1 x 256 + byte2 - 1000) / 10
14 0x0E binary READ Serial number no byte1 byte2 byte3 = byte1 x 65536 + byte2 x 256 + byte3
15 0x0F binary READ FW Rev. no byte1 byte2 = byte1 x 256 + byte2

129 0x81 binary SET DAC mV/ mA byte1 byte1 byte 1= mV (mA) x 10 (e.g. 4mA = 4 x 10=40) °C
130 0x82 binary RESET of DAC mV/ mA output
132 0x84 binary SET Emissivity byte1 byte2 byte1 byte2 = (byte1 x 256 + byte2) / 1000

Temperature calculation at CSmicro hs: (byte1 x 256 + byte2 - 10000) / 100

EXAMPLES (all bytes in HEX)

Readout of object temperature

Send: 01 Command for readout of object temperature
Receive: 04 D3 Object temperature in tenth degree + 1000 04 D3 = dec. 1235

1235 - 1000 = 235

235 / 10 = 23,5 °C

Readout of object temperature (at CSmicro 2Whs)

Send: 01 Command for readout of object temperature
Receive: 30 3E Object temperature in hundredth degree + 10000 30 3E = dec. 12350

12350 - 10000 = 2350
2350 / 100 = 23.50 °C

Set of emissivity

Send:

84 03 B6 03B6 = dec. 950

Receive: 03 B6

950 / 1000 = 0,950

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Burst string Example Complete burst string Conversion to decimal value

2 synchronisation bytes: AAAA ------ -----­2 bytes for each output value (HI LO) 03B8 AAAA 03B8

process temp [°C] = (Hex  Dec(03B8)-1000)/10 = -4,8

After switch on a continuous serial signal will be created. The burst string can be configured with the software.

Burstmode (unidirectional)

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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 µ 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 (see enclosed table 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.

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Emissivity

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.

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
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.

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► 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.

Characteristic Emissivities

In case none of the methods mentioned above help to determine the emissivity you may use the emissivity
tables ► Appendix A and B. 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)

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Appendix A – Emissivity Table Metals

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

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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

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Appendix B – Emissivity Table Non Metals

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

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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

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Appendix D – Direct Connection to an RS232 Interface

CSM connections: TxD (yellow) to T1IN
RxD (green) to R1OUT
GND (brown) to GND

PC connections: connect T1OUT with RxD (PC)
connect R1IN with TxD (PC)

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Appendix E – Declarations of Conformity

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