HCJYET HT-8862 Temperature Gun IR Electrical Infrared Thermometers -50~650℃ 30:1
  • Model: HT-8862

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HT-8862 series of Electrical infrared thermometer easy to carry, ergonomic; and laser pointer can easily aim at the target, fast and secure is the ideal tool for non-contact temperature measurement.

     

                                

Widely used in electric power, chemical industry, metallurgy, transportation and other fields, applicable to the electrical instrumentation equipment,  engines, refrigeration and air conditioning systems and HVAC process control, inspection of steel, glass, cement, plastics production process temperatures. Used in railway areas: detection of high-speed railway axis travels temperature, identify problems in time to prevent an accident.

     

Infrared Thermometer HT-8862 

Features:

1. User selectable℃or℉

2. Laser targeting

3. Auto power off

4. White backlit LCD display

5. High Temperature 

6. Max, Min, DIF, AVG record

7. High and low alarm

8. Adjustable emissivity

Specifications:        

HT-8862

IR Temp.Range

-50℃-650℃/-58℉ ~1202℉

User selectable ℃ or ℉

Optical Resolution

30:1

Adjustable emissivity
0.10~1.00

Accuracy

±1.5%

Repeated accuracy
±0.5℃

Resolution

0.1℃ / ℉

Response time

Less than 250ms

Laser Power
Output<1mW,630~670nm,class 2

Max,Min,AVG record

High and low alarm

Overrange indication

Spectral Response

8~14μm

Auto power off

Auto power off about 20 seconds

Operate temperature

0 ~ 50℃(32 ~122℉)

Package:

Power:9V alkaline batteries or nickel-cadmium batteries 
       
Weight: 176g
       
Dimensions: 155.5mm * 98.8mm * 27.5mm

Packing list: 1 x manual, 1 x warranty card ,1 x 9V battery , 1 x box

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Note: Measurement Conditions
1 Hold the instrument handle, align the infrared temperature sensor measured object. The instrument can automatically compensate for changes in ambient temperature and the errors, but measure the ambient temperature is too large or the first measurement of a high temperature to go through a cryogenic measuring objects, the instrument needs a stable environment in thermal equilibrium for 30 minutes, to , for the next measurement.

2 laser aiming only for long-distance, when measured at close range can be turned off without, so you can save energy.

3 Working Principle
1) infrared thermometer is used to measure the surface temperature.

2) The optical element emits infrared thermometer, reflected and transmitted energy that is collected and gathered in a detector, through electronic no pieces this information into a temperature reading which is displayed.

3) the instrument used for aiming the laser spot on the measured object.

4 Field
1) To ensure that the measured object is larger than the instrument infrared circular light spot diameter.

2) The smaller the target, the thermometer should be closer to the target.

3) Make sure that the measured object area not less than twice the measuring point.

5 Hot positioning: To find a hot spot, aim the thermometer outside the area measured, and then slowly moved up and down the thermometer to scan the entire area until the test points to determine hot spots.

6 Tips
1) can not be transmitted through the transparent surface of the instrument (such as glass) measurements.

2) Steam, dust, smoke, etc., from the surface barrier infrared instrument affect the measurement accuracy.

7 For measuring the distance and the object target ratio: Optical measurement than the target and the object distance D: S = 12:1, for example: the instrument field of view is 12:1, the instrument from the measured object is 12 inches, then the measured object not less than 1 inch in diameter. The following figure shows the other distance measuring range:

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7 About emissivity

1) Describes the emissivity of the material characteristics of radiation energy. Most (90%) of organic materials and painted or oxidized surfaces have an emissivity of 0.95. Measuring the luminescence of the metal surfaces may cause inaccurate readings, to make correct reading, the black masking tape or black can be measured by covering the surface, wait for some time for the tape or coating reaches its surface covered with the same temperature, and then measuring the temperature of the tape or paint can.

2) How to adjust the emissivity

Press the MODE button until "EMS" or "ε" flashes, then press the arrow keys to adjust the required emission rate, adjusted and then press the MODE button.

The following table shows the emissivity of the material reference values ​​(numerical only reference, the actual use of operating conditions prevail)

 

                                                                                                                                                                                                                

Substance

Emissivity

Substance

Emissivity

Asphalt

0.90-0.98

Cloth(Black)

0.98

Concrete

0.94

Human Skin

0.98

Cement

0.96

Soap Bubbles

0.75-0.80

Sand

0.90

Charcoal(Powder)

0.96

Soil

0.92-0.96

Lacquerware

0.80-0.95

Water

0.92-0.96

Lacquer(Matt)

0.97

Ice

0.96-0.98

Rubber(Black)

0.94

Snow

0.83

Plastic

0.85-0.95

Glass

0.90-0.95

Timber

0.90

Ceramics

0.90-0.94

Paper

0.70-0.94

Marble

0.94

Chromium Oxide

0.81

Plaser

0.80-0.90

Cuprate

0.78

Putty

0.89-0.91

Iron Oxides

0.78-0.82

Brick

0.93-0.96

Textile

0.20-0.30

 

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