Thursday, October 29, 2009

Human Factors against the Effectiveness of Leak Detection Methods

Environmental factors such as wind or breeze and ambient light, affects the effectiveness of leak detection process. Additional information is that ambient sound also plays a role in the ineffectiveness of the workability of detection methods applied.

Ambient sound obviously would affect the accuracy of result when you use ultrasonic detectors. This type of detector is not ideal for noisy environment or a type of refrigeration system such as parallel rack. The pressure-regulating valve also produces the same noise that leaks make.

Another factor to deal with is the human factors. If you are an experienced technician in leak detection process and able to master it, it is still not an enough ground to have successful leak detection. Using and maintaining your leak detection devices are two most important tasks you should keep in mind.

Although most detectors are easy to use such as bubble solution methods, you also need to upgrade you knowledge about it. With the advent of newer technology, even in bubble solution method, there are other ways of performing it better and more advanced.

Replacing the parts of your detection devices and cleaning it after use should not be overlooked. Once you have not performed any of the mentioned things, there are big chances of arriving at false results because of faulty working detector you are using.

Tuesday, October 27, 2009

Electronic Sound Detection Method: The Good and Bad Aspect

Ultrasonic sound detection method depends on a high-frequency sound created because of the movement of gas from one pressure to another; the orifice where the gas escapes normally produces 40 KHz and higher.

Try to imagine how humans create sound or voice; the air that escapes or pass through the vocal box, which is a hole enables the humans to produce sounds by letting the air pushes through that hole (vocal box). This phenomenon is similar to having leaks in refrigerants. With electronic sound detector, the leak can be pinpointed or determined.

The greater the pressure inside the gas container or refrigerants, the greater noise there would be because the gas pressure is directly proportional to the turbulence created. The noise is almost inaudible to human ears, much like the whistle of a dog which is at a very high frequency. Hence the detector is named “ultrasonic.” With their highly sensitive microphones, ultrasonic sound detectors are the only ones that can hear such almost inaudible sound.

The same situation also happens in vacuum; the vessel or evacuated system is where the gas rushes into, creating a high frequency sound. However, the only difference is that the noise or sound is generated inside the system, not like in a refrigerant or a gas container in which the noise is generated outside the system.

Continue reading here: “The Good and Bad about Electronic Sound Detection Method”

Friday, October 23, 2009

Methods of Leak Detection for Refrigerants



Having a leaky system that would lose your refrigerant is a very usual service call. Locating the source of the leak is not easy even if it may be easy to diagnose such problem.

You need to hire a technician in order to find problems on refrigerant leaks. The technician expert on leak problems has all the knowledge in using several methods of finding the leaks. However, there are both advantages and disadvantages in several methods known applicable. Some methods are effective but not as good as the other.

The reason why there should be several methods to be used in detecting leaks so that if one method is not working, then other methods may work well. The usual method is to locate suspected area and to pinpoint the very exact leaking area of a refrigerant.

Here are the methods of detecting refrigerant leaks.

(a) Soap Bubbles: This is the easiest way of detecting leaks by using an approved soapy solution. The suspected area is saturated with soapy solution. The solution will bubble if a leak is present. If the system is well-pressurized, this method works fine. You can also use other methods as verification process of detection.

(b) Visual Inspection: This is for locating only the general area of suspected leaks. The refrigerant leaks often come with the leaks in refrigerant oil. However, this may not always be true in some cases.
The leak location is usually surrounded with stains from refrigerant oil. Signs of oil in your refrigerant are the very common factor of leaks.

Wednesday, October 21, 2009

Benefits of POS Barcode Scanners


Spending too much time in waiting is painful. If you have retail business and this is the situation that is going on in your retails store, the more likely that you will lose some of your customers. Speeding up the buying process such as computing the items to be bought would bring your business to the next level. In order for that to achieve, you need POS barcode scanners of the items or products that you are selling.

The products are scanned through the barcode scanner so that the pricing, the product category, product code, and other aspects are immediately recorded and stored in the POS computer. You won’t be doing the ancient old type of running the retail business, in which you have to do everything manually. With POS bar code scanner, the process is very fast, helping you save time or to have time in doing other important things regarding your business. Although, the difficult process here is that you need to tag every item in your store so that they can easily be read through the barcode scanner. It will take time, however, when gets done, everything will be fine and fast.

Most of the barcode scanners use CCD-based technology. Such technology is widely used by several stores, both big and small. This works by pressing the scanner on the barcode so that the information is feed to the computer. However, if most of your products are rounded, you need to have laser-based scanners because CCD-based technology is not capable of reading barcodes embedded on rounded surfaces.

Monday, October 19, 2009

Save Effort and Time with Counting Scales


It is tiring and almost impossible to attain accuracy with just by counting the parts or pieces with your hand. With the advent of measuring device like weighing scales, there have been no tiresome jobs like counting the pieces or parts one by one. The luxury of having counting scales that perform the measuring jobs for you need not be expensive. There are several types of weighing scales to choose from, depending on what suits your needs.

There is wide selection of counting scales available in the market today. They vary in sizes and shapes. Some are just enough to fit on a desk or table. Normally, counting scales have three displays that tell three measurement aspects of the object being weighed; one tells the overall weight, the second tells piece weight, and the other tells the quantity counted.

Usually, counting scales have the facility that tells the scale how heavy every item being weighed is. For instance, there are ten items on the scale, and then the process is followed by a key press that would tell you that there are actually ten items present. The scale would then compute itself on how much each individual item weighs and do the process of counting. In the end, you are given accurate counting result. However, the counting scale is more efficient in giving accurate result when the sample quantity being weighed is higher.

Thursday, October 15, 2009

Have Thermal Printers for Better Business

Thermal printer is ideal for simple printing tasks such as printing receipts. Since it produces documents or image by selectively heating the coated thermal paper, it is economical than any other kinds of printers. The thermal print head is impressed onto the thermal paper once this paper passes through it, allowing texts or images to be produced.

There are thermal printers that could produce different color; the very common ones are red and blue, aside from black.

The thermal printer has components that include platen, spring, thermal head, and controller boards. The platen is the one the feeds paper through its rubber roller. The spring is the one that applies pressure to the thermal head; it is a device that causes the thermal print head to contact the thermo sensitive paper. Lastly, the controller boards are used as a mechanism for controlling.

There are three kinds of thermal printer—thermal wax transfer printer, wireless thermal printer, and direct thermal printer. Thermal wax transfer printer presses the wax coated ribbon onto the paper with the use of heat so that the image or text is transferred. When the ink cools on the paper, it becomes permanent. What’s good with this is that it can print colorful images or texts. Wireless thermal printer uses Bluetooth technology or infrared beams so that the data is connected to the computer, allowing the document or images to be printed. Direct thermal printer is the most common one because it is ideal for printing receipts and a lot of business establishments use this. It works with the use of burning dots being contacted onto the coated paper so that images or texts are created.

Monday, October 12, 2009

What are Data Loggers?

Data logging factors are what make meteorologists being able to assess local weather forecast. Water depths, flow, and levels are measured through data loggers. Perhaps, you may be wondering how on earth does traffic reporters are able to determine how many people have travelled in a certain highway for a particular period of time; data loggers is what makes this possible. Manual counting of vehicles that pass through the road is really impossible. Road traffic counting is basically done through data logging factors. These are just few of many things that data loggers can do.

There are several kinds of data loggers today. The kind of which should be used merely depends on the job. For more extensive research, larger machines are needed while small jobs would use simple or smaller data logger machines. Data logger is defined as computerized electronic device that document certain data for a specific predetermined span of time.

The data loggers are responsible in providing time and date indicator to make the breaking down of recorded data easier to do. This is due to the fact that it is accurate by recording detailed information. Informational researchers use this system to make the analysis not only better but more importantly, accurate.

There are several kinds of data loggers available in the market today, from simple to complex unit. There is a wide range of flexibility so that data retrieval tasks are easily accomplished.

Tuesday, October 6, 2009

Outdoor Digital Thermometers (Part 1)

Outdoor digital thermometers are excellent in assessing the outdoor temperature. By using it, you would know how hot or cold the weather is. These tools are ideal for gardeners to know if the plants you are rearing are in good temperature, most especially in greenhouse. You would have the knowledge what your plant needs are. Or perhaps, you would know what appropriate clothes to wear if you have known the temperature outdoors.

You can build an outdoor garden that you like when you know the temperature and what to do depending on the humidity. Plants greatly depend on the temperature. Having the knowledge on outdoor temperature, you can have good idea on what to do for your garden. Having an outdoor digital thermometer, you don’t have to wait for the weather forecast and be informed with what would be the temperature for the day. Purchasing this tool is a great help not only for gardeners but for everyone whose job would concern about the weather, whether the weather affects that job directly or indirectly.

Purchasing outdoor digital thermometer should not be done without proper consideration of other factors. You have to see and analyze lots options in your hand. You need not to consider the price only. You also have to take a look at the quality and durability of the tool.

Monday, October 5, 2009

Outdoor Digital Thermometers (Part 2)

There are several types of digital thermometer sets for outdoors, equipment, accessories, merchandise and many others. You have to set your goals and what’s really in your mind why you have to buy. You have to think if buying is what you want or what you need. That is why every consumer should distinguish wants and needs.

Having the good idea in mind of what you need to buy is an advantage for you as a consumer. When purchasing anything such as outdoor digital thermometer, informed decision is the best key in arriving at doing something that you won’t regret later. Conducting research not only in nearby stores of the equipment and inquire about the prices and the quality of the product, but also through the internet.

There are lots of websites that cater customers who are looking for measurement equipment such as outdoor digital thermometers. What you only need to know if where to buy. Of course, a research will help you resolve this thing. You have to be conscious though of the scam business sites. If you are not equipped with enough knowledge about determining credible sites, you need to have someone accompany you in purchasing outdoor digital thermometer online.

Try outdoor digital thermometer at TechRentals. The Australian-based company has been serving contented customers for more three decades. Be one of them by trying our products for hire, lease or rent.