Dikai IT-8 Uso manual - Página 9

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Distance coefficient(optical resolution)：distance coefficient is the ratio of "D" (the

distance between head and the object) and the diameter of the object. If the distance to the

object is far, and the object is small, you should choose the high distance coefficient

thermometer, on the other hand, you should choose low distance coefficient thermometer.

Confirming response time:：Response time express the response speed that the

infrared thermometer responses to the temperature being measured, defined as the time

needed that arrive 95% of the last reading power It has relations with photo-electric

detector, signal process circuit and the time constant of display system If the speed of

moving object is very quick and measuring the object that heated quickly, you should

choose the high-speed response infrared thermometer, otherwise, it won't achieve the

enough signal response speed and will lower the measuring accuracy. But not all of

applications need quick response infrared thermometer. To the quiescent object or the

object that on the course of heat has heat inertia, the response time can be loosen.

Therefore, the infrared thermometer's selection must be adapted to the state of the

object.

Confirming circumstance：The circumstance of the thermometer will affect the

measuring result a lot., so the problem should be considered and be solved properly,

otherwise, this will affect the accuracy of thermometer even damage the thermometer。

On the conditions of high temperature, existing dust, smoke and steam, you should

choose the accessories supplied by factory such as protect cover, water-cool, air-cool,

air-cool system, air-blow etc These accessories can solve circumstance influence

effectively and protect the thermometer, realizing temperature measuring exactly. When

choosing accessory, you should request standard service as far as possible to reduce the

cost of setup. It would be the best to choose bicolor infrared thermometer on the

conditions of smoke, dust or other situation that grain will lower the power of measuring

signal. Also, on the conditions of noisy, electromagnetic field, shaking or the circumstance

that difficult to be closed or other bad conditions, bicolor infrared thermometer is the best.

On the conditions of bad and complex, choosing the system that the thermometer head

and the monitor is divided is convenience to setup and equip. You should choose the

signal modality that matching the control equipment actual

Emissivity of material(emissivity)：When there are many kinds of material measured

and their emissivity is different, it's better to choose the infrared thermometer that the

emissivity is adjustable.

Wuhan Dikai optoelectronics technology Co., ltd

Address: No 709, street of Xiongchu, Wuhan

Tel: +86-27-87509386 87509105

WUHAN DIKAI OPTOETECTRONIC TECHNOLOGY. Co., LTD

Post code: 430073

Fax: +86-27-87509386

http://www.dkoe.com