RayTek RAYCMLTJM User manual

CM
Infrared Sensor
Operating Instructions
Rev. B 06/2011
51101

The device complies with the requirements of the European
Directives.
EC –Directive 2004/108/EC (EMC)

Contacts
Raytek Corporation
Worldwide Headquarters
Santa Cruz, CA USA
Tel: [phone]
(USA and Canada only)
[phone]
Fax: [phone]
[email protected]m
European Headquarters
Berlin, Germany
Tel: [phone]
[email protected]e
France
[email protected]r
United Kingdom
[email protected]m
Fluke Service Center
Beijing, China
Tel: [phone]
[email protected]m.cn
Internet: http://www.raytek.com/
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© Raytek Corporation.
Raytek and the Raytek Logo are registered trademarks of Raytek Corporation.
All rights reserved. Specifications subject to change without notice.

WARRANTY
The manufacturer warrants this product to be free from defects in material
and workmanship under normal use and service for a period of two years
from date of purchase except as hereinafter provided. This warranty extends
only to the original purchaser. This warranty shall not apply to fuses or
batteries. Factory calibration is warranted for a period of one year. The
warranty shall not apply to any product that has been subject to misuse,
neglect, accident, or abnormal conditions of operation or storage. Should the
manufacturer be unable to repair or replace the product within a reasonable
amount of time, purchaser’s exclusive remedy shall be a refund of the
purchase price upon return of the product.
In the event of failure of a product covered by this warranty, the
manufacturer will repair the instrument when it is returned by the purchaser,
freight prepaid, to an authorized Service Facility within the applicable
warranty period, provided the manufacturer’s examination discloses to its
satisfaction that the product was defective. The manufacturer may, at its
option, replace the product in lieu of repair. With regard to any covered
product returned within the applicable warranty period, repairs or
replacement will be made without charge and with return freight paid by the
manufacturer, unless the failure was caused by misuse, neglect, accident, or
abnormal conditions of operation or storage, in which case repairs will be
billed at a reasonable cost. In such a case, an estimate will be submitted before
work is started, if requested.
THE FOREGOING WARRANTY IS IN LIEU OF ALL OTHER
WARRANTIES, EXPRESSED OR IMPLIED, INCLUDING BUT NOT
LIMITED TO ANY IMPLIED WARRANTY OF MERCHANTABILITY,
FITNESS, OR ADEQUACY FOR ANY PARTICULAR PURPOSE OR USE.
THE MANUFACTURER SHALL NOT BE LIABLE FOR ANY SPECIAL,
INCIDENTAL OR CONSEQUENTIAL DAMAGES, WHETHER IN
CONTRACT, TORT, OR OTHERWISE.

Content
1 Safety Instructions .................................................................................................8
2 Description............................................................................................................10
3 Technical Data ......................................................................................................11
3.1 PARAMETERS....................................................................................................11
3.2 OPTICAL DIAGRAM..........................................................................................13
3.3 SCOPE OF DELIVERY.........................................................................................14
4 Basics ......................................................................................................................15
4.1 MEASUREMENT OF INFRARED TEMPERATURE ................................................15
4.2 DISTANCE AND SPOT SIZE ...............................................................................16
4.3 AMBIENT TEMPERATURE .................................................................................16
4.4 ATMOSPHERIC QUALITY..................................................................................16
4.5 ELECTRICAL INTERFERENCE ............................................................................17
4.6 EMISSIVITY OF TARGET OBJECT .......................................................................17
5 Install and Operation ..........................................................................................18
5.1 DIMENSIONS OF SENSOR..................................................................................18
5.2 MECHANICAL INSTALLATION .........................................................................19
5.3 CABLE...............................................................................................................19
5.4 WIRE CONNECTION .........................................................................................20
5.4.1 Analog output ...........................................................................................20
5.4.2 Alarm output.............................................................................................20
5.5 LED INDICATOR AND BLINK MODE.................................................................21
6 Software .................................................................................................................22
7 Accessories ............................................................................................................23
7.1 OVERVIEW........................................................................................................23
7.2 FIXED MOUNTING BRACKET............................................................................24
7.3 ADJUSTABLE MOUNTING BRACKET ................................................................25
7.4 AIR PURGE COLLAR.........................................................................................26
7.5 RIGHT ANGLE MIRROR....................................................................................27
7.6 PROTECTIVE WINDOW.....................................................................................28
8 Programming ........................................................................................................29
8.1 GENERAL COMMAND STRUCTURE ..................................................................29
8.2 DEVICE SETUP ..................................................................................................30
8.2.1 Temperature Calculation...........................................................................30
8.2.2 Post Processing .........................................................................................30

8.3 DYNAMIC DATA...............................................................................................30
8.4 DEVICE CONTROL ............................................................................................31
8.4.1 Output for target temperature.................................................................. 31
8.4.2 Analog output, scaling ............................................................................. 31
8.4.3 Alarm output............................................................................................ 31
8.4.4 Factory default values............................................................................... 32
9 Maintenance ..........................................................................................................33
9.1 TROUBLESHOOTING MINOR PROBLEMS ..........................................................33
9.2 ERROR CODES...................................................................................................34
9.3 AUTOMATIC ERROR INDICATION ....................................................................34
9.4 CLEANING THE LENS .......................................................................................34
10 Appendix .............................................................................................................36
10.1 DETERMINATION OF EMISSIVITY....................................................................36
10.2 TYPICAL EMISSIVITY VALUES.........................................................................36
10.3 COMMAND SET ..............................................................................................43

Safety Instructions
CM Rev. B 06/2011 8
1Safety 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 operational safety and
functionality of the instrument.
Instrument Disposal
Disposal of old instruments should be handled according to
professional and environmental regulations as electronic waste.

Safety Instructions
9Rev. B 06/2011 CM
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.
Pay particular attention to the following safety instructions.
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.

Description
CM Rev. B 06/2011 10
2Description
The CM miniature infrared sensors are high performance noncontact infrared
temperature measurement systems. They measure the amount of energy
emitted from an object accurately and repeatedly and convert the energy into
temperature signal.
The following analog outputs are available by different model:
0 to 5 Volt
J thermocouple
K thermocouple
The LED on the back of CM shows the status of units.

Technical Data
11 Rev. B 06/2011 CM
3Technical Data
3.1 Parameters
Temperature range -20 to 500°C (-4 to 932°F)
Spectral response 8 to 14 μm
Thermal Parameters
Accuracy
1
(Digital and Voltage) ± 1.5% of reading or ± 2°C
2
whichever is greater
Accuracy
3
(TC) ± 1.5% of reading ±2°C or ± 4°C
4
whichever is greater
Repeatability (Digital and Voltage) ± 0.5% of reading or ± 1°C
whichever is greater
Repeatability (TC) ± 0.5% of reading ± 1°C or ± 2°C
whichever is greater
Response time (95%) 150 ms
Temperature resolution 0.1°C (0.2°F)
Emissivity 0.100 to 1.100 (software controlled)
Transmissivity 0.100 to 1.000 (software controlled)
Electrical Parameters
Power 24 VDC ± 20% @ 20 mA
Analog Output 0 to 5 V or TCJ or TCK output
Digital Output Two-way RS232 digital output
9600 baud, 8 data bits, 1 stop bit,
no parity, no flow control
1
for ambient temperature 23°C (73°F) ± 5 K , e = 0.95 and calibration geometry
2
± 3.5°C for Tmeas < 0°C (32°F)
3
for ambient temperature 23°C (73°F) ± 5 K , e = 0.95 and calibration geometry
4
± 5.5°C for Tmeas < 0°C (32°F)

Technical Data
CM Rev. B 06/2011 12
Alarm Output Transistor, 24 VDC @ 20 mA
RS232 TxD and Alarm output share one single wire. Either can be
selected by DataTemp software or ASCII command!
General Parameters
Environmental rating IP65 (NEMA-4x)
Ambient operating range -10 to 70°C (14 to 158°F)
Storage temperature -20 to 85°C (-4 to 185°F)
Dimensions Ø ¾”, length: 94 mm (3.7 in)
Weight < 200 g (7.1 oz)

Technical Data
13 Rev. B 06/2011 CM
3.2 Optical Diagram
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.
Optical resolution 13:1 @ 150 mm (90% energy)
Figure 1：Optical diagram
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:
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

Technical Data
CM Rev. B 06/2011 14
3.3 Scope of Delivery
Sensor
2 mounting nuts
Support software CD
Quickstart Guide

Basics
15 Rev. B 06/2011 CM
4Basics
4.1 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 in Section 10.2 Typical Emissivity Values on page 36.
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.

Basics
CM Rev. B 06/2011 16
4.2 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.
Figure 2: Proper Sensor Placement
4.3 Ambient Temperature
The sensing head should work under ambient operating range in accordance
to section 3.1 Parameters, page 11.
4.4 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 conta-
minants. For this purpose an air purge collar is available. You should only use
oil free, clean “instrument“ air.
Target greater than spot size
Target equal to spot size
Target smaller than spot size
Best
Good
Incorrect
Background

Basics
17 Rev. B 06/2011 CM
4.5 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.
4.6 Emissivity of Target Object
Determine the emissivity of the target object as described in appendix 10.1
Determination of Emissivity. 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.

Install and Operation
CM Rev. B 06/2011 18
5Install and Operation
5.1 Dimensions of Sensor
All sensors and accessories are supplied with 3/4-16 UNF-2A or
M18x1 thread.
Figure 3: Dimensions of sensor

Install and Operation
19 Rev. B 06/2011 CM
5.2 Mechanical Installation
All sensors come with a 1.0 m (3.3 ft) cable or 3.0 m (9.8 ft) and 2 mounting
nuts. You can mount the sensor in brackets or cutouts of your own design, or
you can use the mounting bracket accessories.
Figure 4: Sensor with fixed mounting bracket
5.3 Cable
The color code of the cable and 6 conductors are shown in the following table:
8
Outer
Jacket
1
Power
+
2
Power -**
3
RxD
4
TxD/
Alarm
5
TC+/
mV+
6
TC-/
mV-
7
Shield
J
brown
orange
black
blue
violet
white
red
K
yellow
yellow
red
0 to 5 V
grey
yellow
brown
** Die RS232’s Ground must be connected to Power-
Table 1: Sensor Wiring Color Code

Install and Operation
CM Rev. B 06/2011 20
5.4 Wire Connection
Figure 5: Connection diagram
5.4.1 Analog output
There are 3 models available: 0 to 5 V, TCJ, TCK.
Minimum load impedance for 0 to 5 V output should be 50 kΩ.
Inner impedance of TC output circuit is 100 Ω.
5.4.2 Alarm output
RS232 TxD and alarm output share one single wire. Either can be selected by
the DataTemp software or RS232 command. When alarm mode is active, the
CM can receive command from a PC via RS232, but can’t respond to the PC.
RS232 TxD can work normally after the alarm output is switched off by
command K=0, see Section 10.3 Command Set. If unit is set by DataTemp
software, alarm output is valid only after the unit is restarted.