The customers is always baffled bythe price of the detection equipment, Experienced companiesnaturally know how to choose it, But some of the new companiessometimes will feel baffled. Take the glow-wire tester as anexample, as the same standards demanded of theglow- wire tester, Either by volume to quotation or by digitaldisplay LCD show to quotation, the quotation of Various manufacturers will have a big difference, Customers often ask: The same is the glow- wire tester, why the price gap so large?
In fact, the issue is quite simple, onlybecause the understanding of the glow- wire tester user is not asthe manufacturers, also because many customers completely orientedby the price, So we have the above problems. Analysis ofthese issues, but there are several reasons asfollowing:
1、The quotation contents isdifferent
l Generally speaking, Glow- wire tester should include the movement structure , the main chassis, Armor thermocouple, the control box, lighting and the fan, etc. Basic matching equipment including another thermocouple, silk paper, pine boards access gray disk and mallets, etc.
l Some manufacturers only quote the price of the mainframe, but some manufacturers include matching equipment, certainly, the matching equipment which included will be different. So when the customers ask about the quotation, they should make clear the glow-wire which the manufacturers say contains what contents in it.
2、Differentmaterials and different manufacturers
l The pipe movement structure of the glow –wire tester, the main chassis, Armor thermocouples are all the important components, Therefore, the choice of the materials and the manufacturers determine the price of the equipment, performance and the using life.
l For the thermocouples, standard requirements using the Armor thermocouple, Currently, only the import one can really meet the requirements. The thermocouple which is produced by the domestic enterprise, although there is the similar ones and the price is cheaper, but the using life is very short, Probably less than several times will damage, If you buy the glow- wire tester, and use of such thermocouples, it is necessary to have such a heart ready, so as the so-called value-for-money.
l Then to the select of the machine box material, there are a lot of trap: Now the equipment compartment mainly is the stainless and the spraying steel plate two kinds, included it the stainless steel can classified into 304, 302 and 202. Steel number 304 is one of the rather good stainless steel materials, 302 is a little poor than 304, and 202 is commonly known as the stainless iron, It can not be regarded as a kind of stainless steel, Using it with slightly longer time or with the humid environment it will rusting and exposing out. (Another test method is to use an absorption iron to make it knows). The rolled plate can classified into cold-rolled plate and hot-rolled plate two kinds, and cold-rolled plate is the relatively good one in the steel plate, hot-rolled plate relatively speaking is a little poor.
l So when purchase the glow- wire tester, we must understand the material and the quality of these important components, producers, certainly, including the thickness and other important indicators, we should be aware that some manufacturers may using the method of inferior materials and perpetrating a fraud to reduce the costs.
3、Different Processing Technology
l The problem here is difficult to talk it clearly, usually, the Processing Technology is complex and the use performance of the equipment will be good. For example, two ends semi-axle of the both movement agencies, we must overall processing, otherwise, the coaxial will have no guarantee.
l In fact, the quality of the processing equipment, primarily to deal with some of the details. For example, the head of the flange, if the processing is poorly, it is very easy to leakage. Some manufacturers use the welding method to make this place turned into integrative, unable to repair, although the price is cheaper, But once it happened, the whole equipment will become invalid. But for the sophisticated processing flange, it can be demolished, also the seal is very good, But this requires complex and careful processing, of course, the price will higher. But for this simple point, ordinary users may not pay attention to it.
4、 Attention to the renovation of equipment
l The glow- wire tester which has the very cheap price is the refurbished equipment, But the ordinary users is very difficult to see clearly of it, so when we purchase it, we must look out it carefully and clearly. If not, it may be fooled.
5、Manufacturers’ service
l Many manufacturers because of scale, development direction and the question of funding, they have no pre-sale and after-sale service, As clients is not familiar with each sides indicators of the equipment, if there is no technical communication for the manufacturers, it will cause a lot of problems such as because of communication is not in place to result in choose the wrong equipment, the resulted problem is no need for us to elaborate here; All equipments when they are used for a long time, they will have some problems, even if there is no one they also will exists some maintenance services problems, after they come across the problems different manufacturers will have different after-sales service, some manufacturers focus on brand and services, they will quickly resolve the matters, but some manufacturers torment for a long time, even more, have no body to dispose of it, or dealing with the long time and has been no resolved.
l This is one of the major conditions we must considered when we choose the equipment.
Therefore, we can draw out our conclusions: Whenwe choose the equipment we should see the content, the selectedmaterial of the manufacturers, processing technology, new and oldequipment and the services of the manufacturers, so that we canpick out an equipment suitable for us to use.
Guangzhou Sunho Electronic Equipment Co.,Ltd
2009-8-28
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