CIT M SERIES

Operating Manual

INSTITU

TE O

F AUTO

MATIO

N C

HIN

ESE

ACAD

EM

Y OF SC

IENC

ES , SC

IAMPLE

CO

.LTD

2007 /V0702

CIT M SERIESHigh Performance

Infrared Thermometer

2007年/V0710

CONTACTS

ADD：Room 107,Moshi Building, No.95 Zhongguancun East Road ,BeijingZIP：100080TEL：010－82614428FAX：010－62559949Technical support：010－82614428WEB：www.hwcw.comE-mail：cithjg@yahoo.com.cn

WARRANTYThe 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 CommunityThis instrument conforms to the following standards:

CE cetification :EMC: EN61326‐1, 2006

Specifications subject to change without notice.

CIT M SERIES用于欧盟地区的标准符合性声明本仪器符合以下标准：EMC： EN61326-1,

TABLE OF CONTENTS

1. Safety Instructions 12 Product Description 23 Technical Performance 33.1 General 33.2 Optical 43.3 Overview of Sensor 43.4 Delivery List 44 Basics 54.1 Theory Of Infrared Temperature Measurement 54.1.1

Emissivity 54.1.2

Determination of Emissivity 54.2 Theory Of 2-Color Infrared Temperature Measurement 64.2.1

Partially Obscured Target 64.2.2

Target Smaller than Field 74.2.3

Low or Changing Emissivity 74.2.4

Slope 75 Installation 85.1 Environmental Requirements 85.1.1

Ambient Temperature 85.1.2

Atmospheric Quality 85.1.3

Electrical Interference 85.2 Mechanical Installation 95.2.1

Distance To Object 95.2.2

Viewing Angles 95.2.3

Aiming and Focusing 95.3 Electrical Installation 11

CIT M SERIES

5.3.1

Sensors And Cable Connections 115.3.2

Cables And User Equipment Connection 115.4 Power Supply 115.5 Analog Output 126 Operation 136.1 Sensor Control Panel 136.2 Power on Indication 136.3 Signal Processing 146.3.1

Real-Time Mode 146.3.2

MAX Mode 146.3.3

AVG Mode 146.4 Emissivity or Slope Settings 166.5 Internal Temperature Display 167 Options 177.1 Air/Water Cooled Housing 177.2 Air Purge Collar 177.3 Adjustable Mounting Bracket 178 Maintenance 198.1 Troubleshooting Minor Problems 198.2 Repairs Preparations 208.3 Test 208.4 Calibration 208.5 Cleaning The Lens 209 Appendix-Table Material Emissivity 2210 Glossary Of Terms 24

CIT M SERIES

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 OperationThe instrument should not be used for medical diagnosis.

Replacement Parts and AccessoriesUse 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 InstructionsThe 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.

CIT M SERIES 1

2. PRODUCT DESCRIPTIONCIT M series of high performance infrared thermometer consists of

three models: CIT-1M，CIT-2M，CIT-1MD.CIT-1M and CIT-2M are 1-color infrared thermometer, and the CIT-

1MD is 2-color infrared thermometer. The CIT series 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 protection which make sensors have excellent reliability and strong resistance to electromagnetic interference.

Friendly interface to operate easyly. Has calibration function.

Model Temperature range

Optical Resoluti

on

Spectral Respons

e

Time Respons

eApplications Descriptio

n

CIT-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

Equipment supporting

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 terms in this manual.2. Single-band is also called as 1-color.3. 2-color and Two-color ratio are the same meaning.

CIT M SERIES2

TECHNICAL PERFORMANCE

3 TECHNICAL PERFORMANCE3.1 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 resolutionwhen≤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: 0.10～1.30step=0.01

Slope: 0.80～1.20step=0.01

Measurement mode 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

PhysicsSensor Size Φ60×210(mm)

Weight 0.60Kg , 1.7Kg With Air/Water cooled housing:

CIT M SERIES 3

TECHNICAL PERFORMANCE3.2 Optical 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:S coefficient. D:S is important parameter to evaluating the optical resolution of 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:S is 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 ListSensor5m cable with shieldOperating ManualTest reportsProduct certification

CIT M SERIES

500mmD

SensorFor D:S=120:1,Minimum target:Φ4.2mm

S

D ： DistanceS: Spot size

Control Panel

LED Display

Eyepiece

Base bracket

Cable jack 2xM4 screw (38mm apart)

1/4 inch

Objective lens

4

TECHNICAL PERFORMANCE4 BASICS4.1 Theory of infrared temperature measurement

Infrared thermometers are optical‐electronic temperature sensors. These sensors are able to detect ”radiation of heat”. Infrared thermometers are made up of a lens, a detector, and an electronic signal processing unit. The detector converts the infrared radiation into an electrical signal. The signal processing electronics analyze the electrical signals and convert it into a temperature measurement. 1-color temperature is dependent on the intensity of the emitted infrared radiation. And the intensity is dependent on the material emissivity which can be setted on the sensor.

The biggest advantage of the infrared thermometer is its ability to measure temperature without touching an object. Consequently, surface temperatures of moving or hard to reach objects can easily be measured.

4.1.1 EmissivityThe emissivity is a calculated ratio of infrared energy emitted by an

object to the energy emitted by a blackbody at the same temperature (a perfect radiator 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. Temperature2. Angle of measurement3. Geometry (plane, concave, convex)4. Thickness5. Surface quality (polished, rough, oxidized, sandblasted)6. Spectral range of measurement7. 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 EmissivityIt can have a value between 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 temperature value will become low. For example, if you have set 0.95 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 any other suitable method. Next, measure the object’s temperature and adjust emissivity setting until the correct temperature value is reached. This is the correct emissivity for the measured material.

CIT M SERIES 5

TECHNICAL PERFORMANCE2. If possible, apply flat black paint to a portion of the surface of the object.

The emissivity of the paint is 0.95. Next, measure the temperature of the painted area using an emissivity setting of 0.95. Finally, measure the temperature of an adjacent area on the object and adjust the emissivity until 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 measurements that 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 two separate wavelength bands (colors). The benefits of 2-color sensors are that accurate measurements can be made under the following 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 both wavelength bands. Another benefit is that 2-color sensors measure closer to the highest

temperature within the measured spot instead of an average temperature. A 2-color sensor can be mounted farther away, even if the target does not fill the resulting spot size. The convenience is that you are not forced to install the sensor at some specific distance based upon target size and the sensor’s optical resolution.

4.2.1 Partially Obscured TargetsThe radiated energy from a target is, in most cases, equally reduced

when objects or atmospheric materials block some portion of the optical field of view. It follows that the ratio of the energies is unaffected, and thus the measured temperatures remain accurate. 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 unpredictable and changing infrared transmission due to accumulating dirt and/or moisture on the window surface.• The sensor itself is subject to dirt and/or moisture accumulating on the lens surface.

4.2.2 Targets Smaller Than Field of ViewWhen a target is not large enough to fill the field of view, or if the

target is moving within the field of view, radiated energies are equally reduced, but the ratio of the energies is unaffected and measured temperatures remain accurate. This remains true as long as the background temperature is much lower than the target’s. The following examples show where 2-color sensors can be used when targets are

CIT M SERIES6

TECHNICAL PERFORMANCEsmaller than the field of view:

• Measuring wire or rod—often too narrow for field of view or moving or vibrating unpredictably. It is much easier to obtain accurate results because sighting is less critical with two-color sensors.• Measuring molten glass streams—often narrow and difficult to sight consistently with single-wavelength sensors.

4.2.3 Low or Changing EmissivitiesIf the emissivities in both wavelengths (colors) were the same, as they

would be for any blackbody (emissivity = 1.0) or greybody (emissivity < 1.0 but constant), then their ratio would be 1.00, and target emissivity would not be an influence. However, in nature there is no such thing as a greybody. The emissivity of all real objects changes with 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 than a 1-color instrument as long as the emissivity changes by the same factor in both wavelength bands. Note, however, that accurate measurement results are dependent on the application and the type of material being measured.

4.2.4 Slope If the emissivities in both wavelengths (colors) are not the same, you

must set a slope. The slope is an adjustment that compensates for the differences in the emissivity of the two spectral ranges. The slope is preset at 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.

CIT M SERIES 7

INSTALLATION5 INSTALLATION5.1 Environmental 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.

5.1.1 Ambient TemperatureThe sensing head is designed to operate in ambient temperatures

between 5°C and 60°C. Internal temperatures outside this range will cause a error. In ambient conditions above 60°C, an optional air/water-cooled housing is available to extend the operating range to 120°C with air cooling, or 175°C with water cooling. When using the water cooled housing, it is strongly recommended to 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 supplies are 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 purging or air cooling, clean (filtered) or “instrument” air is recommended.

5.1.2 Atmospheric QualitySmoke, fumes, dust, and other contaminants in the air, as well as a

dirty lens are generally not 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 enough infrared energy to measure accurately, and the instrument will indicate a failure. It is good practice to always keep the lens clean. The Air Purge Collar helps keep contaminants from building up on the lens.

If you use air purging, make sure an air supply is installed before proceeding with the sensor installation.

5.1.3 Electrical 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.

CIT M SERIES8

Best90°to target最好

到目标的角度 90°

Acceptable

Angles

Good45°to 90°to target

Bad0°to 45°to target

Figure4: AcceptableSensorViewing Angles

INSTALLATIONWhen 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 give erroneous readings. Withtime,we need to avoid the sun pounded the side goals.

5.2 Mechanical InstallationYou 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.5.2.1 Distance To Object

Figure 3: Proper Sensor PlacementSensor placement for 1-

color temperature measurements is more critical than 2-color measurements. The sensor must have a clear view of the target. There can be no obstructions on the lens, or in the atmosphere. Because you can focus the lens, the distance from the target is not a major considation, as long as the target completely fills the field of view. Figure 3 illustrates proper placement when using the 1-color mode.

5.2.2 Viewing 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:

CIT M SERIES 9

Figure 6 Focusing

Objective Lens

Distance Indication

Focus Indica-tion line

INSTALLATION

1. Loosen the nuts or bolts of the mounting base. (This can be either a factory-supplied accessory or customer-supplied base.)

2. Look through the eyepiece and position the sensor so the target is centered asmuch 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 side while looking through the eyepiece. The target should not move with respect to the black spot . If it does, keep adjusting the focus until no apparent motion is observed.

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.

4. Check once more to make sure the target is still centered, and secure the mounting base. Focusing is complete.

CIT M SERIES

Sighting scope

target

Measurement area(black spot)

a.target fill black spot b.target not fill black spot Figure 5 aiming

Sighting scope

target

Measurement area(black spot)

10

INSTALLATIONIMPORTANTWhen 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 2-color sensor to give erroneous readings.5.3 Electrical Installation

The thermometer has electrical connection protection. Only right connect power, the thermometer operates normally; If not, the

thermometer indicate nothing and no output. When connection power indicate nothing , shut off power immediately. Please check up connections.

5.3.1 Sensors And Cable ConnectionsSee figure.7, Finger handhold the plug of cable, aim the gap of plug at

cable jack, then push in; hear“clip”sound mean right connection. When disjoin plug, do not circumyrate plug; handhold the middle part of plug then draw out.

5.3.2 Cables And User Equipment ConnecttionSensor adopts 4-wiring connection. See following Figure:

CIT M SERIES

Fig.7 Right installation plug of cable

b. Disjoin: draw out

Connection Disjoin

a. Connection: push in

Fig.8 Connection and disjoin do not circumgyrate plug

Connection Disjoin

11

INSTALLATION

5.4 Power Supply Connections from a 18 ～ 24 VDC (150 mA or higher) power supply attach to red and black terminals (Figure 9).

Incorrect wiring can damage the sensor and void the warranty. Before applying power, make sure all connections are correct and secure.Improper supply can result in severe error. The power supply must be stabilized voltage supply ,not be Swithing power supply.

5.5 Analog Output：4～20mA

Suit for long distance transfering signal

For 4 ～ 20mA output, thermometer has alarm function. BREAK lamp lighting up, indicate that I+ and I- terminals break or disconnect. When correct connection, BREAK lamp light off.

User load resistance≤500Ω。 When user equipment input is current, signal connects

straightway.

When user equipment input is voltage (1 ～ 5V),parallel connect a precision resistance 250Ω 0.1% grade).

CIT-1MD display ‘Lo’， directs that the signal of target is too small,or aiming is incorrect. At that time, output is 4mA.

CIT M SERIES

24

531

Yellow/I+Red/+V

Blue/I-

Fig.9 Cable connection

Yellow/I+

Black/GND

Blue/I-

Red/+V

Shield wire

}

}Power supply

Output

Black/GND

12

OPERATION6 OPERATION6.1 Sensor Control PanelThe sensor is equipped with a control panel, which has setting/controlling buttons and an LED display. The panel is used primarily for setting up the instrument. Besides displaying the current temperature and maximum temperature and average tempera-ture ,the LED can display slope (2-color) or emissivity (1-color), the Max and Avg mode process time, and the ambient temperature.

Fig10. Option Panel

6.2 Power on indication:After power on, first, display emissive or slope for 2 sec, then enter in temperature measurement mode. If target temperature far below lower limit, 1M/2M display lower limit temperature, 1MD display ‘Lo’.

CIT M SERIES

Eyepiece

Alarm of outputBreaking off

AVG Mode

MAX Mode

Display

Mode Button

Cable jack

Change value button

13

OPERATION

6.3 Temperature Processing6.3.1 Realtime mode(MAX LED and AVG LED off)，the value on display is Realtime temperature。The mode is generally used. see figure 13（a）.

6.3.2 MAX mode(MAX LED on ， AVG LED off) ， the value always keep maximum in △t. see figure 13（b）.

Application：Measuring moving targets (for example rolling steel board or stick),targets surface have some oxygenation surface. MAX mode can acquire better measurement result .

6.3.3 AVG mode(AVG LED off ， AVG LED on) ， the value always keep average in △t. see figure 13（c）.Application: When target temperature wave greatly (for example a boil metal), AVG mode can acquire stable measurement result.

CIT M SERIES

Realtimemode

MAX mode

AVG mode

EMISSIVITY/SLOPE

Ambient

Power on

Press hold on

Operating Mode (DOS prompt)

Process time

Process time

In both show ,▲▼buttons change emissive 0.10 ～1.30,or slope(0.80～ 1.20)

Temperature

No handle 2S

Figure.12 Tree of operation

Explain: When setting process time, no handle 5 second,auto exit.

5s return to temperature indication.

No handle 2S

*:the Measurement mode after power on,lie on last mode before power down .

*

▲ ▼change Process Time △t 1～ 30s,default = 5 s

Press hold on

Press hold on

14

OPERATION

Figure13 Measurement curve at 3 modes

6.4 Emissivity or Slope SettingsFor 1-Color temprature Measurement (such as 1M/2M model) set emissivityFor 2-Color temprature Measurement (such as 1MD model) set slope. Slope range is from 0.80 to 1.20.

If you know the value of emissivity or slope , to set the value as following:1. Press the Mode button until the MAX LED and AVG LED are off and LED display show ‘x.xx’. the ‘x.xx’ is emissivity or slope.2. Press or ▲ or ▼ (UP or DOWN) button to change the value.3. Press the Mode button several times until the sensor enter in

CIT M SERIES

Oxygenation spot

△t

T

time△t

Measurement spot

△t

△t

T

time△t

(b)MAX T curve

△t

Sensor

△t

T: temperature

time△t

(c)AVG T curve

△t

Trealtime T curve (thin line)

AVG T curve (thick line）

<45°

(a) realtime T curve

realtime T curve (thin line) MAX T curve (thick

line）

15

OPERATIONmeasurement mode. The displayed temperature will now be based on the new emissivity or slope value.

For Unknown emissivity/slope—you will have to set the value by doing the following:1. Take the temperature of the target’s surface , we call it as ‘Ta’—actual temperature. Use a reliable contact or probe thermometer. If you have to measure several areas on the target, use the average of the temperatures for the following steps.2. Aim the sensor at the target.3. Press the Mode button several times until display show emissivity or slope(show x.xx) .4. Press and hold on the Mode button until display show as Figure15.The display shows current temprature. 5. Press the ▲ or ▼(UP or DOWN) button to change the temperature when you change the emissivity or slope in fact. If the temperature equal to Ta, the adjustment is finished.

When in adjustment, pressing ▲ or ▼button will decrease or increase temperature. Because it changes the value of emissivity or slope rather than temperature . The value of emissivity or slope is lower, the temperature is higher.

6.5 Internal Temperature Display Figure16 shows sensor’s interal ambient temperature. Show holds on only 5 seconds, then enter in Realtime Measurement Mode. If the ambient temperature outside range (0°C ~ 60°C)，it need to install a water-cooled housing .

CIT M SERIES

℃MAX

AVG

Figure14 emissivity/slope

℃MAX

AVG

Figure15 show temperature when in changing emissivity/slope

MAX

AVG℃

Figure16 internal ambient temperature

16

水冷套

12-¦µ6¦µ160

¦µ140

¦µ120

OPTIONS7. OPTIONS7.1 Air/Water Cooled Housing

Selected when the ambient temperature is higher than 60℃.The cooling media could be gas or

water ,and the cooling media must be clean or had been percolation treated. Flow rate could be adjusted by the interanl ambient temperature.

Installation: Air/Water cooled housing installed by the manufacturers in the factory .Users need to setting two tubes which length is 1/8 inch by the infall and the outlet.Specification Φ74X101Water running waterflow velocity 75 liters per hourPressure Less than 0.51MpaWeight 800gcooling media Water, gasmedium temperature

6℃～24℃

7.2 Air Purge Collar Select it when there is too much dust in the environment that the sensor head is installed.

Installation: Circumrotate air purge collar on the sensor by M37X1 screw thread.

Specification Φ40X125Air Pressure Request

clean and dry air or filtered air

Air supply temperature

16℃～30℃

Flow velocity 0.17 cubic meters per min

Weight 100g

7．3 Adjustable Mounting BracketInstallation: There are twelve Φ6 holes for installing in the base.The diametres of the circle are Φ100，Φ120 and Φ140.

Application: The adjustable mounting bracket suitable for the occasions which the height and the position are fixed, such as the industry and the production scene, and so on. Locking the nuts and the handle after finish aiming.Weight: 1.4 Kg Height adjustment:

Fixed highth 250 mm Direction adjustment:

Horizontal, vertical direction adjustable

8 MAINTENANCEOur sales representatives and after service are always at your disposal

for questions regarding equipment’s using, calibration, repair, and solutions to specific application problems. Please contact your local sales representative if you need assistance. In many cases, problems can be solved over the telephone. If you need to return equipment for servicing, calibration, or repair, please contact us before shipping. Phone numbers are listed at the beginning of this document.

8.1 Troubleshooting Minor Problems● Normal infrared temperature sensor has the following features:

① Sighting low temperature target(lower than lower limit of range),the display indication lower limit value.

②Sight lamp, and adjust brightness of the lamp, the temperature on display change with lamp brightness.

● Some possible causes of the malfunction and treatment methods：

Symptom Probable Cause SolutionIncorrect temperature

measurementEmissivity of slope

setted wrong Reset

Lower temperature display than before

Lens have dust、 oil or handprint Clean the lens’ surface with

soft paper or soft cloth

Operat with no response Intermal circuit trouble or key-press trouble Returned to factory

Temperature measurement instability

Strong light shine target

Adopt baffle avoid strong light irradiation

Under humidification environment too long-

playing

Turn off power and put the thermometer under dryness

environment(＜70℃)for hours

Poor quality of power supply

A.C.Power:Select A.C.purified power with filter adopt

D.C.Regulator with low rippleThere are strong electromagnetic

interference around thermeter.

Adopt shield measured

Same targets,but different measured values. Incorrect aiming. Correct aiming, Installation

fastnessSightting dot not locate at

cener of field of vision Optics declinationNo influence to measuring,may

not deal with; or return to factory

Seeing nothing from eyepiece

Object lens break or internal optical part

fall offReturned to factory

Power normal but without display.

LED dispay destroyed or thermometer power

trouble Returned to factory

Turn on,sensor’s power current>500mA

Incorrect connections or power supply exceed

allow value

Turn off immediately, connect correctly and examine power

voltage. If voltage correct,

then turn on;trouble appears again trun off immediately .

8.2 Repairs PreparationsIf instrument is abnormal, please contact with dealer or factory; some

abnormity operating can resolve by guidance. If the instrument in need of repair ,please to make some prepare as follows.

◆ Account for failure phenomenan.◆ Inventory of return.◆ On thermometer surface there is a scutcheon or label. If Lose, please

provide the production date and Instrument No.◆ Clean the product carefully, or else will be billed at high cost.◆ Mail product, Please pack with buffer.

8.3 VerificationWhen need to verify, please do as follows:

Setting emissivity equal to 1.00 Clean objective Lens； Circumgyrat object lens and setting focus line at 1.0 location when

the distance is 1m.◆ Aim at the center of blackbody furnace.◆ Read the value of measurement

8.4 CalibrationIf the error of instrument exceeds allowed,please to calibration as

follows.（1）Setting emissivity equal to 1.00（2）Clean objective Lens.(3) Circumgyrating object lens and setting white line correspond 1.0

location when the distance is 1m.（4）Turn off power supply of instrument, press hold on MOD button, then turn on the power .If the display show “PGA” and two LED lamps (right side of display)flickering for a while, following screen close up, loosen the MOD button immediately, then the display will show temperature and two LED lamps flickering slowly. It comes into ‘Calibration Mode’ temporality. If unloose the MOD button after display show nothing two seconds, it won’t come into Calibration Mode, and the lamps light off.（ 5 ） Press▲ ▼buttom to adjust the temperature on display,untill the temperature equal to standard temperature.

8.5 Cleaning The Lens

Keep the lens clean at all times. Care should be taken when cleaning the lens. If the spot is more dust, and from time to time cleaning eyepiece lens surface observation window, if the surface dust or oil can be used as shown on the removal method, careful not to scratch the lens. Clean not only the middle region, but also the edge of lens, the otherwise low temperature will be.

To clean the window, do the following:1. Lightly blow off loose particles with “canned” air (used for cleaning computer equipment) or a small squeeze bellows (used for cleaning camera lenses).

2. Gently brush off any remaining particles with a soft camel hair brush or a soft lens tissue (available from camera supply stores).

3. Clean remaining “dirt” using a cotton swab or soft lens tissue dampened in distilled water. Do not scratch the surface.

For finger prints or other grease, use any of the following:• Denatured alcohol• Ethanol

Apply one of the above to the lens. Wipe gently with a soft, clean cloth until you see colors on the surface, then allow to air dry. Do not wipe the surface dry, this may scratch the surface.

Do not use any ammonia or any cleaners containing ammonia to clean the lens. This may result in permanent damage to the lens’s surface! Equipment shall not be inconsistent with environmental requirements in

the use of equipment under the conditions of use. As should avoid direct bright light, strong wet, high temperature, and more dust, smoke concentration under conditions of use.

Clean the edge of the lens withcotton tampon dipped anhydrous

alcohol

Clean the lens with soft paper

Clean the lens edge

EMISSIVITY9. APPENDIX A----table of material emissivity

Material and state Temperaure Range（℃） Emissivity（1μm

round）Steel：Smooth and non-oxidizedSmooth and oxidized mildPreform an non-oxidizedPreform and mild oxidizedHadly oxidizedLiquid state

100～12000.05～0.1

0.450.25～0.350.5～0.6

0.8～0.950.35～0.45

Cast iron：Smooth and non-oxidizedSmooth and oxidized mildPreform an non-oxidizedPreform and mild oxidizedHadly oxidizedLiquid state

100～1200

0.30.50.50.75

0.8～0.950.35～0.4

Aluminium：Smooth and non-oxidizedSmooth and oxidized mildPreform an non-oxidizedPreform and mild oxidizedHadly oxidizedLiquid state

Room temperature～600

0.02～0.10.2

0.2～0.30.3～0.4

0.4～0.450.55～0.6

Staimless steel：Smoothoxidized over 800℃

Room temperature～800

0.2～0.250.85

Copper：smooth and oxidized mildHadly oxidizedLiquid state

100～1000100～1000

0.50.8

0.15～0.2Chrome and chromeplate：Smooth and non-oxidizedchromeplate mild oxidizedchromeplate hadly oxidized Preform an non-oxidizedPreform and mild oxidizedHadly oxidized

Room temperature～400

0.2～0.30.4～0.60.7～0.8

0.4～0.550.6～0.70.7～0.8

Nickel and nickel-plate：Smooth and non-oxidizedSmooth and oxidized mildSmooth and oxidized hardlySmooth and non-oxidizedSmooth and oxidized mildSmooth and oxidized hardly

100～1000

0.250.4

0.8～0.90.350.5

0.8～0.9

EMISSIVITYLead：Smooth and non-oxidizedSmooth and oxidized mildSmooth and oxidized hardlyPreform an non-oxidizedPreform and mild oxidizedPreform and hardly oxidized

50～300

0.30.4

0.6～0.70.40.55

0.6～0.7TungstenZonal polishing non-oxidized(tungstenic lamp)

150020003000

0.3～0.390.3～0.370.3～0.36

Molybdenum：Smooth and non-oxidizedSmooth and oxidized mildSmooth and hardly mildPreform an non-oxidizedPreform and mild oxidizedPreform and hardly oxidized

50~1000

0.30.4

0.7~0.80.4

0.5~0.60.8

Zinc：Smooth and non-oxidizedSmooth and oxidized mildSmooth and hardly mildPreform an non-oxidizedPreform and mild oxidizedPreform and hardly oxidized

20~400

0.20.30.60.30.50.6

manganin：Smooth and non-oxidizedSmooth and oxidized mildSmooth and hardly mildPreform an non-oxidizedPreform and mild oxidizedPreform and hardly oxidized

0～400

0.250.450.650.30.550.7

Ceramic Coat(metal) 0～600 0.3～0.5Bricks：brickSilicon dioxide brick

100~10001000

0.30.5~0.6

Oxidation aluminiumgranularity 1～2 microngranularity 10～100 micron

200~10001000~1500 0.2～0.4

Carbon CarbonizeGraphite

0～15000～15000～1500

0.8～0.850.950.8

Silicon 0～1500 0.42～0.78

GLOSSARY OF TERMS10.GLOSSARY OF TERMS

Absolute Zero The temperature of –273.16°C, –459.69°F, or 0°K; thought to be the temperature at which molecular motion vanishes and a body would have no heat energy.

Accuracy The maximum deviation in a set of measurements between the temperature indicated by a radiation thermometer and the known temperature of a reference source, including the uncertainty of the reference temperature source. The accuracy can be expressed in a variety of ways including temperature, percentage of temperature reading, or percentage of full scale temperature of an instrument.

Ambient Operating Range Range in the ambient temperature over which the instrument is designed to operate.

Atmospheric Windows The spectral bands in which the atmosphere least affects the transmission of radiant energy. The spectral bands are 0.4 to 1.8, 2 to 2.5, 3 to 5, and 8 to 14 micrometers.

Background Radiation Radiation that enters an instrument from sources other than the intended target. Background radiation can enter due to reflections from the target or scattering within the instrument.

Blackbody An ideal thermal radiator that absorbs all of the radiation incident thereon, and the radiant emission from which is quantified by Planck’s Radiation Law.

Calibration Procedure Procedure that is performed to determine and set the parameters affecting an instrument’s performance in order to ensure its designed function within prescribed limits.

Calibration Source A source for which the radiance temperature can be calibrated to within a known level of uncertainty in relation to some other parameter, and in which this relationship is sufficiently constant to enable it to be used for a reasonable period without calibration.

Celsius or C The temperature scale in which the temperature in Celsius (TC) is related to the temperature in Kelvin (TK) by the formula; TC = TK –273.15. The

GLOSSARY OF TERMSfreezing point of water at standard atmospheric pressure is very nearly 0°C, and the corresponding boiling point is very nearly 100°C.Formerly known as centigrade temperature scale.

Color Temperature The temperature of a black body from which the radiant energy has the same spectral distribution as that from a surface.

Current‐Loop A form of communications wherein a pair of wires is used to transmit the signal as a current. Levels of 4 to 20 mA are often used to indicate the minimum and maximum signal level, respectively. Sometimes, for digital applications, various magnitudes of mA current are used to indicate a logical 1 and 0 mA. The current loop is often characterized by a maximum impedance of the device that is connected to the loop.

D:S Optical resolution expressed as a ratio of the distance to the resolution spot divided by the diameter of the spot.

Digital Output Interval The time interval between transmission of packets of digital data containing temperature and system status information.

Drift The change in instrument indication over a period of time not caused by external influences on the device.

EMI/RFI Electro‐Magnetic Interference/Radio Frequency Interference, which affects the performance of electronic equipment.

Emissivity At a given wavelength the ratio of infrared energy radiated by an object at a given temperature to that emitted by a blackbody at the same temperature. The emissivity of a blackbody is unity at all wavelengths.

Environmental Rating A rating given (usually by agencies and regulatory bodies) to indicate the severity of the environment in which the unit will function reliably.

Gray Body A source of radiant emissions for which the emissivity is less than 1 but constant and, therefore, independent of wavelength.

IEC International Electrotechnical Commission. An European organization that coordinates and sets

GLOSSARY OF TERMSrelated standards among the European Community.

Infrared Radiation (IR) Radiation within the portion of the electromagnetic spectrum which extends from 0.75 to 1000 μm.

Infrared Thermometer An instrument that determines the temperature of an object by means of detecting and quantifying the infrared radiation emitted there from. Types include total power, wide band, narrow band, and multiple wavelengths.

Isolated Inputs Inputs, outputs and power supply lines that are electrically insulated from each other, whereby arbitrary grounding of these lines cannot affect the performance of the instrument such as generate ground‐loops or short out internal resistors.

Kelvin or K A temperature scale that is directly related to the heat energy within a body. Formally, a temperature scale in which the ratio of the temperatures of two reservoirs is equal to the ratio of the amount of heat absorbed from one of the them by a heat engine operating in a Carnot Cycle to the amount of heat rejected by this engine to the other reservoir. The temperature of the triple point of water (in this scale) is defined as 273.16° K. [Ref. 1] To convert from Celsius, K=C+273.16.

Minimum spot size The diameter of the smallest object for which an instrument can meet its performance specifications.

Optical Pyrometer A system that, by comparing a source whose temperature is to be measured to a standardized source of illumination (usually compared to the human eye), determines the temperature of the former source.

Radiance TemperatureThe temperature of a black body which has a radiance equal to the radiance of the object at a particular wavelength or wavelength band.

Radiant Energy The electromagnetic energy emitted by an object due to its temperature.

Relative Humidity The dimensionless ratio of the actual vapor pressure of the air to the saturation vapor pressure (abbreviated RH). Percent relative

GLOSSARY OF TERMShumidity is expressed as the product of RH and 100. For example an RH of 0.30 is a percent relative humidity of 30%.

Repeatability The degree to which a single instrument gives the same reading on the same object over successive measures under the same ambient and target conditions. The ASTM standard E 1256 defines it as the sample standard deviation of twelve measurements of temperature at the center of the span of the instrument. Generally expressed as a temperature difference or a percent of full scale value, or both.

Resolution See Temperature Resolution, Optical Resolution, or Spatial Resolution.

Response Time The time for an instrument’s output to change to 95% of its final value when subjected to an instantaneous change in target temperature corresponding to the maximum temperature the instrument can measure.

Slope The ratio of the emissivities for the two spectral bands of a 2‐color radiometer. The emissivity of the shorter wavelength band is divided by the emissivity of the longer wavelength band. Slope can be greater than, equal to, or less than unity. Slope accounts for materials where emissivity varies with wavelength.

Spectral Response The wavelength region in which the IR Thermometer is sensitive.

Spot The diameter of the area on the target where the temperature determination is made. The spot is defined by the circular aperture at the target which allows typically 90% of the IR energy from the target to be collected by the instrument.

Target The object upon which the temperature is determined.

Temperature A property of an object which determines the direction of heat flow when the object is placed in thermal contact with another object (i.e., heat flows from a region of higher temperature to one of lower temperature).

Temperature Resolution The minimum simulated or actual change in target temperature that gives a usable change in output and/or indication.

GLOSSARY OF TERMSTwo‐Color Thermometry A technique that measures the

energy in two different wavelength bands (colors) in order to determine temperature. The 2 color technique has been shown to be effective for correcting errors due to partial blockage of the target caused by dust particles.

Verification Confirmation of a design with regard to performance within all prescribed specifications.