B2B Electronics

A Pressure Transmitter is a device that measures the amount of pressure exerted by gas or liquid. The instrument is used to control pressure levels on the flow of gas or fluid, the speed as well as the level of these substances. Currently, there are different technologies used to perform such functions. The capacity of each transmitter varies and it can affect the cost depending on its performance and suitability of application. Thus it is important to consider different aspects when it comes to choosing the right tool to use.

Types of Pressure Calibrator

Before deciding on the kind of pressure transmitter to purchase, it is important to familiarize yourself first with the available options. The kinds of pressure transducer vary depending on its industrial use. The ACONE pressure flow meter, for example, uses the technology which makes it capable to handle different types of fluid. It is also made to operate even under the harshest environmental condition. Another type is the ALDP-3051 which utilizes microprocessor and digital technology which makes it useful when it comes to acquiring differential and absolute pressure. It also other features such as self-diagnosis and communication protocols. It also allows customization to make it compatible with different types of applications. The ALDPWG meter, on the other hand, is another type of differential pressure wedge meter which is aimed in measuring low flow of fluid. This device is usually utilized for measuring pressure among liquids with high-viscosity such as oil, dirty liquid, waste water and the likes. It can also be used to measure steam and gas, apart from liquid.

Choosing the Pressure Gauge

In addition to choosing the right pressure transmitters, it is also important that you put consideration on the kind of connection that you will be using. The traditional types include the flange and the cone. The connectors are also crucial since they will also determine the kind of pressure flow in the upstream and downstream of the element. Some pressure transducers can be customized on the kind of connection, depending on the application. But you have to be aware of the effects of the kind of connector that you will be using so you can maximize its usage.

Selecting your Device

It is important that you look for high-quality pressure transmitter. Search for ones that are calibrated to ensure accurate readings every time. Uncalibrated transmitters can also be considered useless, so don’t fall into the trap of purchasing it just because it is way cheaper than the ones that you see in authorized dealers. In addition, make sure that your transmitter complies with industrial standards. Obtain your equipment from a reliable seller so you know that you are getting genuine parts on your pressure flow measuring device.

Smart Measurement Inc. is the best provider of Pressure Transmitter that is capable of differential, gage, or absolute pressure measurement with digital communications and capacitive sensor technology. The ALPD-3051 pressure transmitter is available in a wide variety of features to make it suitable for almost any application.

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Biometric Technology enables identification of person based on intrinsic physical characteristics. There are several body parts which are commonly used for biometric identification such as fingerprint, face, iris, and palm. Fingerprint is the one that most widely used for identification system. Besides showing unique pattern for each person, fingerprint also possess other attributes that make it popular biometric object such as easy to capture, consistent throughout human lifespan and enable quick verification.

Today, fingerprint time attendances have been widely used as standard office equipments. Its usage encompasses variety of purposes. It is used for controlling the physical security access, authenticating privilege for particular business process, and also recording time attendance. This article mainly discusses the last issue, which is to help you to choose fingerprint time attendance as a time attendance recorder. Here are several features that you must consider when choosing fingerprint time attendance:

• Type of Sensor: sensor is the most important part of fingerprint time attendance. It captures the image of fingerprint before being converted into unique identification number. There are two most common types of sensors: optical sensor and silicon sensor.
• Optical Sensor is the oldest type of sensor. It is easier to implement and relatively more stable in diverse room temperature. However its performance will be highly dependent on the clarity of the optical surface. For this reason, when choosing fingerprint time attendance with optical sensor, you should consider the coated optical sensor. The coat prevents the sensor from being touched directly and maintains the clarity of optical surface.
• Silicon Sensor is newer technology, it constructs fingerprint image by mapping pressure or capacitance differences between the skin and the silicon chip. This technology offers several advantages like producing a more accurate fingerprint image, occupying smaller space, and requiring smaller to budget implement. However, unprotected silicon sensor will not be durable for frequent usage. Consequently, Silicon Sensor is not commonly used for public usage such as time attendance machine that will be accessed hundreds of times everyday.
• Capacity of Fingerprint Template: capacity of fingerprint template is maximum number of fingerprint image that can be stored within the fingerprint time attendances. It is advisable to choose a fingerprint time attendance that has fingerprint template at least twice the maximum amount of employee. By having number of fingerprint template twice the amount of employee, each employee can register a backup finger if the machine has a problem for identification.
• Capacity of Log Buffer: capacity of log buffer is the maximum number of log transactions that can be stored temporarily inside the fingerprint time attendance. Time attendance transaction log is usually stored for several days before being downloaded into database sever. Therefore, the capacity of log buffer must be several times (usually more than five times) bigger than amount of employee.
• Identification Speed: identification speed is the average time required by fingerprint time attendance to identify a person based on his or her fingerprint pattern. The process comprises scanning the fingerprint, searching, and comparing the fingerprint pattern against its own fingerprint database. A good fingerprint time attendance should be able to identify a person in less than 1-second.
• Standard Error: fingerprint time attendance cannot work perfectly all the time. It may wrongly identify the fingerprint pattern. There are two types of identification error: FAR (False Acceptance Rate) and FRR (False Rejection Rate). False Acceptance Rate is the percentage of machine to grant access the impostors. Meanwhile, False Rejection Rate is the percentage of machine to reject access by authorized user. Fingerprint time attendance should have as low as possible FRR and FAR. A Standard quality reference for FRR is below 0.1% and for FAR is below 0.001%.
• Reporting Software: reporting software aggregates the transaction logs and reports in readable format. This software also helps the owner to analyze productivity of each employee. Although not all fingerprint time attendances come with built-in reporting software, it is very important component of time attendance system. It will eventually deliver the result to the owner. The quality of fingerprint time attendance is determined by its ability to deliver reports that meet the business requirements.

There are many different models, features, and capabilities of fingerprint time attendance available in the market nowadays. The most advance and versatile fingerprint time attendance may be not the most suitable for particular company’s environment. The best product is the one that fits the business and technical requirements. It means the machine must have appropriate technical specification that fits the physical environment and number of users. It must also deliver valuable information for managing the human resources productivity.

GriyaTekno.com is building technology supplier and installer based in Indonesia. Visit us to learn more about Fingerprint Products and Access Control System in general.

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The exceptional performance ratio of this PA amplifier series is very competitive that made it popular with users. With the exceptional quality, we believe that its PA amplifier products will attempt your expectation. If you have further question about Hylex’s PA amplifier products, please do not hesitate to contact us.

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Hylex Electronic Co., Ltd.
No. 26, Ta-Ho St., Taichung City, Taiwan
Tel: +886-4-23110606  
Fax: +886-4-23110505 
E-mail: services@hylex.com

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