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Contacts
ADD：Room 107,Moshi Building,No.95Zhongguancun East Road ,Beijing
ZIP：100080
TEL：010－82614428
FAX：010－62559949
Technical support：010－82614428
WEB：
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WARRANTY
The manufacturer warrants this instrument to be free from defects in material and workmanship under normal use and service for the period of one year from date of purchase. This warranty extends only to the original purchaser. This warranty shall not apply to fuses, batteries, or any product which has been subject to misuse,neglect, accident, or abnormal conditions of operation.
In the event of failure of a product covered by this warranty, the manufacturer will repair the instrument when it s returned by the purchaser, freight prepaid, to an authorized Service Facility within the applicable warranty period, provided 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.
Specifications subject to change without notice.
Declaration of Conformity for the European Community
This instrument conforms to the following standards:
CEcetification :
EMC:EN61326‐1, 2006
Specifications subject to change without notice.TABLE OF CONTENTS
1. / Safety Instructions / 12 / Product Description / 2
3 / Technical Performance / 3
3.1 / General / 3
3.2 / Optical / 4
3.3 / Overview of Sensor / 4
3.4 / Delivery List / 4
4 / Basics / 5
4.1 / Theory Of Infrared Temperature Measurement / 5
4.1.1 / Emissivity / 5
4.1.2 / Determination of Emissivity / 5
4.2 / Theory Of 2-Color Infrared Temperature Measurement / 6
4.2.1 / Partially Obscured Target / 6
4.2.2 / Target Smaller than Field / 7
4.2.3 / Low or Changing Emissivity / 7
4.2.4 / Slope / 7
5 / Installation / 8
5.1 / Environmental Requirements / 8
5.1.1 / Ambient Temperature / 8
5.1.2 / Atmospheric Quality / 8
5.1.3 / Electrical Interference / 8
5.2 / Mechanical Installation / 9
5.2.1 / Distance To Object / 9
5.2.2 / Viewing Angles / 9
5.2.3 / Aiming and Focusing / 9
5.3 / Electrical Installation / 11
5.3.1 / Sensors And Cable Connections / 11
5.3.2 / Cables And User EquipmentConnection / 11
5.4 / Power Supply / 11
5.5 / Analog Output / 12
6 / Operation / 13
6.1 / Sensor Control Panel / 13
6.2 / Power on Indication / 13
6.3 / Signal Processing / 14
6.3.1 / Real-Time Mode / 14
6.3.2 / MAX Mode / 14
6.3.3 / AVG Mode / 14
6.4 / Emissivity or Slope Settings / 16
6.5 / Internal Temperature Display / 16
7 / Options / 17
7.1 / Air/Water Cooled Housing / 17
7.2 / Air Purge Collar / 17
7.3 / Adjustable Mounting Bracket / 17
8 / Maintenance / 19
8.1 / Troubleshooting Minor Problems / 19
8.2 / Repairs Preparations / 20
8.3 / Test / 20
8.4 / Calibration / 20
8.5 / Cleaning The Lens / 20
9 / Appendix-Table Material Emissivity / 22
10 / Glossary Of Terms / 24
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1.SAFETY INSTRUCTIONS
This document contains important information, which should be kept at all times with the instrument during its operational life. Other users of this instrument should be given these instructions with the instrument. Eventual updates to this information must be added to the original document. The instrument can only be operated by trained personnel in accordance with these instructions and local safety regulations.
Acceptable Operation
This instrument is intended only for the measurement of temperature. The instrument is appropriate for continuous use. The instrument operates reliably in demanding conditions, such as in high environmental temperatures, as long as the documented technical specifications for all instrument components are adhered to. Compliance with the operating instructions is necessary to ensure the expected results.
Unacceptable Operation
The instrument should not be used for medical diagnosis.
Replacement Parts and Accessories
Use only original parts and accessories approved by the manufacturer. The use of other products can compromise the operation safety and functionality of the instrument.
Instrument Disposal
Disposal of old instruments should be handled according to professional and environmental regulations as electronic waste.
Operating Instructions
The following symbols are used to highlight essential safety information in the operation instructions:
/ Helpful information regarding the optimal use of the instrument./ Warnings concerning operation to avoid instrument damage.
/ Warnings concerning operation to avoid personal injury.
2. PRODUCT DESCRIPTION
CIT M series of highperformance infrared thermometer consists of three models: CIT-1M，CIT-2M，CIT-1MD.
CIT-1Mand CIT-2M are 1-color infrared thermometer, and the CIT-1MD is 2-color infrared thermometer. The CITseries of products with high performance and multiple functions can meet a wide range of industrial, non-contact temperature measurement applications.
Strong ability of anti-smoke and anti-steam depending on the special system design of optics ,machine and electron.
Visual sighting design, not only can aim target directly, but also can know the true size of the measured region.
Output with isolation and power supply with protectionwhich make sensors have excellent reliability and strong resistance to electromagnetic interference.
Friendly interface to operate easyly.
Has calibration function.
Model / Temperature range / Optical Resolution / Spectral Response / Time Response / Applications / DescriptionCIT-1M / 600～2000°C / 120:1 / 0.96 m / 50ms / Heat treatment,
Surface coating,
Wire Production,
Bar Production，Containers objective measurement ，
Steel industry ，Coking Industry Equipmentsupporting applications。 / 1-color
CIT-2M / 300～1200°C / 120:1 / 1.55 m / 50ms / 1-color
CIT-1MD / 700～1800°C / 120:1 / 0.96m
1.55m / 50ms / 2-Color
Table 1:Models
In this manual:
1.The infrared thermometer, is also called as instruments, sensors, and other termsin this manual.
2.Single-band is also called as 1-color.
3.2-color and Two-color ratio are the same meaning.
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CIT M SERIES
TECHNICAL PERFORMANCE
3TECHNICAL PERFORMANCE
3.1 General
ModelParameters / 1-Color infrared
thermometer / 2-Color infrared thermometer
CIT-1M / CIT-2M / CIT-1MD
Temperature / Temperature range / 600℃～2000℃ / 300℃～1200℃ / 700℃～1800℃
Accuracy / ±1%TH (TH:Higher limit of range)
Repeatability / ±2‰TH
Display resolution / 1℃
Output resolution / when≤700℃：0.5℃
when＞700℃：0.1℃ / when≤400℃:0.5℃
when＞400℃:0.1℃ / when≤800℃：0.5℃
when＞800℃：0.1℃
Emissivity or Slope / Emissivity: 0.10～1.30
step=0.01 / Slope: 0.80～1.20
step=0.01
Measurementmode / Real-time、Maximum 、Average
Operation and display / Three button control: MOD▼ ▲；
4 LED digital display, 5 LED lamp hint
Hint / 4～20mA output disconnections hint
Optical / D:S
(Optical resolution) / 120：1
Measurement distance / 0.5m～∞
Minimum target size / Φ4.2mm / Φ4.2mm
Electric / Power / DC18V～24V
Current / 150mA（max）
Response time / 50ms
Output signal / 4～20mA（with isolation protection）
Environment / Storage temperature / -40℃～85℃
Operation temperature / 5℃～60℃
Temprature with air/water cooled housing / 5℃～175℃
Humidity / 10～80%，no dew
Physics / Sensor Size / Φ60×210(mm)
Weight / 0.60Kg, 1.7Kg With Air/Water cooled housing:
3.2Optical
Variable focusing, through-the-lens sighting，the black spot in middle of sighting scope indicate the true measured area. So, It’s used expediently.
High D:Scoefficient. D:Sis important parameter to evaluating the optical resolutionof the sensor.For the variable focusing sensor,the D:S is constant.So you can get the spot size by dividing the distance by this coefficient.This sensor’s D:Sis 120:1，So spot size at 1200mm from the target is 10mm, spot size at 500mm(the nearest location), is 4.2mm which is the the minimum spot size of the the sensor).
Figure1 The relationship between distance and target spot size
3.3 Overview Of Sensor
Figure2: The size of infrared temperature
3.4 Delivery List
Sensor
5m cable with shield
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CIT M SERIES
BASICS
Operating Manual
Test reports
Product certification
4 BASICS
4.1 Theory of infrared temperature measurement
Infrared thermometers are optical‐electronic temperature sensors. These sensors are able to detect ”radiation ofheat”. Infrared thermometers are made up of a lens, a detector, and an electronic signalprocessing unit. Thedetector converts the infrared radiation into an electrical signal. The signal processing electronicsanalyze the electrical signals and convert it into a temperature measurement. 1-color temperature is dependent on the intensity of theemitted infrared radiation. And the intensity is dependent on the materialemissivity which can be setted on thesensor.
The biggest advantage of the infrared thermometer is its ability to measure temperature withouttouching an object. Consequently, surface temperatures of moving or hard to reach objects can easilybe measured.
4.1.1 Emissivity
The emissivity is a calculated ratio of infrared energy emittedby an object to the energy emitted by a blackbody at the same temperature (a perfectradiator has an emissivity of 1.00).It’s an object’s ability to absorb and emit infrared energy. For some general materials ,you may refer to Appendix A.
Emissivity values shown in Appendix A are only approximate,since several factors may affect the emissivity of a material. These include the following:
1. Temperature
2. Angle of measurement
3. Geometry (plane, concave, convex)
4. Thickness
5. Surface quality (polished, rough, oxidized, sandblasted)
6. Spectral range of measurement
7. Transmission (e.g. thin films plastics)
The emissivity value setted on the sensor, is used to compensate the error which produced by the material’s emissivity. How to set this value , see section 6.4.
4.1.2 Determination of Emissivity
It can have a valuebetween 0.10 and 1.00. For example, a mirror has an emissivity of 0.10. If a higher than actual emissivity value is set, the temperaturevalue will becomelow. For example, if you have set0.95 and the actual emissivity is 0.9, the temperature reading will be lower than the true temperature.
An object’s emissivity can be determined by one of the following methods:
1. Determine the actual temperature of the material using an RTD (PT100), a thermocouple, or anyother suitable method. Next, measure the object’s temperature and adjust emissivity setting untilthe correct temperature value is reached. This is the correct emissivity for the measured material.
2. If possible, apply flat black paint to a portion of the surface of the object. The emissivity of thepaint is 0.95. Next, measure the temperature of the painted area using an emissivity setting of0.95. Finally, measure the temperature of an adjacent area on the object and adjust the emissivityuntil the same temperature is reached. This is the correct emissivity for the measured material.
4.2 Theory of 2-Color
Two-color ratio technology makes possible accurate and repeatable temperature measurementsthat are free from dependence on absolute radiated energy values. In use,a 2-color sensor determines temperature from the ratio of the radiated energies in twoseparate wavelength bands (colors).The benefits of 2-color sensors are that accurate measurements can be made under thefollowing conditions:
• When the field of view to the target is partially blocked or obscured.
• When the target is smaller than the sensor’s field of view.
• When target emissivities are low or changing by the same factor in bothwavelength bands.
Another benefit is that 2-color sensors measure closer to the highest temperaturewithin the measured spot instead of an average temperature. A2-color sensor can be mounted farther away, even if the target does not fill the resultingspot size. The convenience is that you are not forced to install the sensor at somespecific distance based upon target size and the sensor’s optical resolution.
4.2.1 Partially Obscured Targets
The radiated energy from a target is, in most cases, equally reduced when objects oratmospheric materials block some portion of the optical field of view. It follows thatthe ratio of the energies is unaffected, and thus the measured temperatures remainaccurate. A 2-color sensor is better than a 1-color sensor in the following conditions:
• Sighting paths are partially blocked (either intermittently or permanently).
• Dirt, smoke, or steam is in the atmosphere between the sensor and target.
• Measurements are made through items or areas that reduce emitted energy,such as grills, small openings, or channels.
• Measurements are made through a viewing window that has unpredictableand changing infrared transmission due to accumulating dirt and/or moistureon the window surface.
• The sensor itself is subject to dirt and/or moisture accumulating on the lenssurface.
4.2.2 Targets Smaller Than Field of View
When a target is not large enough to fill the field of view, or if the target is movingwithin the field of view, radiated energies are equally reduced, but the ratio of theenergies is unaffected and measured temperatures remain accurate. This remains trueas long as the background temperature is much lower than the target’s. The followingexamples show where 2-color sensors can be used when targets are smaller thanthe field of view:
• Measuring wire or rod—often too narrow for field of view or moving or vibratingunpredictably. It is much easier to obtain accurate results because sightingis less critical with two-color sensors.
• Measuring molten glass streams—often narrow and difficult to sight consistentlywith single-wavelength sensors.
4.2.3 Low or Changing Emissivities
If the emissivities in both wavelengths (colors) were the same, as they would be forany blackbody (emissivity = 1.0) or greybody (emissivity < 1.0 but constant), thentheir ratio would be 1.00, and target emissivity would not be an influence. However, innature there is no such thing as a greybody. The emissivity of all real objects changeswith wavelength and temperature, at varying degrees, depending on the materi-al.When emissivity is uncertain or changing, a 2-color sensor can be more accurate thana 1-color instrument as long as the emissivity changes by the same factor in bothwavelength bands. Note, however, that accurate measurement results are dependenton the application and the type of material being measured.
4.2.4 Slope
If the emissivities in both wavelengths (colors) arenot the same, you must set a slope.The slope is an adjustment that compensates for the differences in the emissivity ofthe two spectral ranges.The slope is presetat the factory at 1.00.
Slope of Partial material
1. Set the slope to approximately 1.00 for measuring the following metals with oxidized surfaces:
• Cobalt • Stainless Steel • Nickel • Iron • Steel
2. Set the slope to approximately 1.06 for measuring the following metals with smooth, clean, unoxidized surfaces:
• Cobalt • Rhodium • Platinum • Iron • Stainless Steel
• Tungsten • Molybdenum • Steel • Nickel • Tantalum
Molten iron also has an approximate slope setting of 1.06.
3. Set the slope to approximately 0.97 for measuring the most of nonmetals.
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CIT M SERIES
INSTALLATION
5 INSTALLATION
5.1Environmental Requirements
Sensor location depends on the application. Before deciding on a location, you need to be aware of the ambient temperature of the location, the atmospheric quality of the location, and the possible electromagnetic interference in that location.
5.1.1Ambient Temperature
The sensing head is designed to operate in ambient temperatures between 5°C and 60°C. Internal temperatures outside this range will cause a error. Inambient conditions above 60°C, an optional air/water-cooled housing is availableto extend the operating range to 120°C with air cooling, or 175°Cwith water cooling. When using the water cooled housing, it is strongly recommendedto also use the air purge collar to avoid condensation on the lens.
When using air or water cooling and air purging, make sure air and water suppliesare installed before proceeding with the sensor installation.Water and air temperatures for cooling should be 15-30°C for best performance.Chilled water or air below 10°C is not recommended. For air purgingor air cooling, clean (filtered) or “instrument” air is recommended.
5.1.2Atmospheric Quality
Smoke, fumes, dust, and other contaminants in the air, as well as a dirty lens are generallynot a problem when using the 2-color model (as long as the attenuation is equalin both spectral bands). However, if the lens gets too dirty, it cannot detect enoughinfrared energy to measure accurately, and the instrument will indicate a failure. It is good practice to always keep the lens clean. The Air Purge Collarhelps keep contaminants from building up on the lens.
If you use air purging, make sure an air supply is installed before proceeding with thesensor installation.
5.1.3Electrical Interference
To minimize electrical or electromagnetic interference or “noise” be aware of the following:
Mount the electronics enclosure as far away as possible from potential sources of electrical interference such as motorized equipment producing large step load changes.
Use shielded wire for all input and output connections.
Make sure the shield wire from the electronics to terminal block cable is earth grounded.
For additional protection, use conduit for the external connections. Solid conduit is better than flexible conduit in high noise environments.
Do not run AC power for other equipment in the same conduit as the sensor signal wiring.
When installing the sensor, check for any high-intensity discharge lamps or heaters that may be in the field of view ，either background or reflected on a shiny target. Reflected heat sources can cause a sensor to giveerroneous readings. Withtime,we need to avoid the sun pounded the side goals.
5.2 Mechanical Installation
You can mount the sensor through a 1/4 inch screw in the middle of the sensor bracket, or two M4 screw on the two side of the sensor bracket(Figure 2.You may use the accessories to mount.
5.2.1Distance To Object
Figure 3: Proper Sensor Placement
Sensor placement for 1-color temperature measurements is more critical than 2-colormeasurements. The sensor must have a clear view of the target. There can be noobstructions on the lens, or in the atmosphere. Because you can focus thelens, the distance from the target is not a major considation, as long as the target completelyfills the field of view. Figure 3 illustrates proper placement when using the1-color mode.
5.2.2Viewing Angles
The sensor head can be placed at any angle from the target up to 45°.(Figure 4)
5.2.3 Aiming And Focusing
Once you have the sensor in place, you need to aim and focus it on the target. To aim and focus the sensor, complete the following:
1. Loosen the nuts or bolts of the mounting base. (This can be either a factory-suppliedaccessory or customer-supplied base.)
2. Look through the eyepiece and position the sensor so the target is centered as
much as possible in the middle of the black spot (Figure 5).For 1M and 2M models,the black spot must be filled with taget((Figure5-a).For 1MD model ,the aiming of ((Figure 5 -b) is allowable.
3. Turn the Objective Lens clockwise or counter-clockwise until the target is in focus.You can tell the lens is focused correctly by moving your eye from side to sidewhile looking through the eyepiece.The target should not move with respect tothe black spot . If it does, keep adjusting the focus until no apparent motion isobserved.
If target enough greater than small black spot, precision focus is not need. User can set location of objective lens refer to distance between objective lens and target. White line on objective lens is focus indication line that indicate distance between objective lens and target. See Figure 6: white line point on 1.0 location, it shows the distance between objective lens and target must be 1.0m. If the distance greater than 2m,the white Line must point on ‘∞’ location.