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Dr.Meter B003 Digital Microscope USB 300X Magnifier Review

Posted by on September 6, 2012 2 comments

The Dr.Meter B003 Digital Microscope is not only a digital microscope but also can be used for cameraing, that’s to say it is also a USB camera.It is ideal for individuals using it for entertainment and other purposes as well as professionals working on research projects. Such as, It can be used in industry inspection,laboratory research,justice identify,medical care analysis,teaching assistance,jewelry and antique identify,beauty and health care etc.

The Dr.Meter B003 is a hand-held pen-style unit that you hold over the object to be magnified, with the resulting image appearing on your computer’s monitor.And with the generous length of USB cable included, you can work at a comfortable distance from your computer, giving you plenty of room to do your examination. If you need a more stable view than holding the unit in your hand can provide, the Dr.Meter B003 does come with a cradle on which the USB microscope can rest and swiveled at a wide variety of angles.

Main features:

Working platforms:windows7 xp,vista,mac,linux
Magnification:1/10-100-200-300times(magnificate freely)
Photograph:Anti-tremble picture capture function
Videography:High compression
Loght source:adjustable LED ollumination(USB interface)
Vedio:Video wiht extra-long time-11 hours long & 3.6GB of memory video
Focusing: Manual-focusing focal length:Infinite distance
Features: Multifunction USB microscope
Max Size: lens diameter 11mm*Product leng 126mm
Pixels: 2MP,1600* 1200,640* 480,320* 240
Display speed:15-30fps
Interface:USB2.0

Software Measurement Function : length; radian; angle;( measuring accuracy:1 um)
Software Drawing Function: length segment; radian segment; angle segment; marking
Software Input: text input is available.
Warranty:1 year (customer pay the freight)

This Portable USB Microscope camera is an innovated products for health care for the home use. It is a tubular imaging system consisting of an optical lens, an image sensor, a safe LED Mechanism for illumination and high speed control circuit connected to a computer. You can use it to observe yourself like using a mirror. You can observe any part of your body, in particular the parts that you could not see before. Frequent observation and knowing what your body looks like in its normal, healthy state make you more alert to any abnormalities and will lead to early detection and treatment of illnesses. As a USB microscope, it can magnify stamps, antiques,coins, insects, electric circuits, machines, fabrics, food, decorations, etc. and can also help visually impaired patients magnify small text for reading.You can display the images captured by the Pen Camera on the computer screen, store them on the computer, print them, or send them over the Internet share with friends.

Accurately Check A Structure’s Moisture Problems With A Moisture Meter

Posted by on August 26, 2012 No comments

Building many structures such as homes and other buildings is a challenge and often hard to do these days. Since their main purpose is to shelter people as well as other important items and equipment, they should withstand the elements. These structures are sizable investments as well, so their long-term durability has to have a high level so that the investment will not go to waste.

However, no matter how tough a building is or how well planned its construction has been, the structure’s everyday exposure to the harsh environment can still take its toll.

One of the more common problems that plague buildings and houses is moisture. Moisture may seem harmless, but when a structure exposes itself to moisture over long periods of time, moisture can pose a serious threat to the stability. Moisture can come in many forms; as a solid, a liquid, or in vapor form. This means that moisture has many ways for it to seep into the materials of your house or building and damage it. In order for you to detect the presence and amount of moisture present in your structure’s materials, you can use a moisture meter or a psychrometer for that purpose.

The problem with moisture in your structure’s materials is that it is very hard to detect. The effects of moisture cannot be always seen with the naked eyes since moisture damage builds up slowly. Any visible damage cannot be seen for a few years. By then, your repair costs may reach a high amount. Regular checking of your structure with the meter allows you to accurately keep track of the moisture levels present in the solid materials. When you detect a real level, you can use proactive maintenance to stop the moisture problem at an early stage and prevent further damage to your structure’s materials.

How does a moisture meter detect dampness in a solid material? Different types of moisture meters use different methods to detect moisture. Some handheld meters use radio frequencies to penetrate materials such as wood to have an accurate measurement of the moisture contained in it.

Other meters have a pin type probe that sends electrical charges into the material suspected of moisture. These slight variances in the electrical charges allow the meter to know the amount of moisture inside building materials without ever seeing them.

A drawback is that one moisture meter is often very pricey to buy. However, considering that it can detect moisture which can have a negative effect to your structure and potentially cause more damage and costs when left unchecked, the price is definitely justified. The purchase of this meter will potentially save the owner more money in the long run.

What Are Digital Tachometers Used For?

Posted by on August 12, 2012 No comments

A tachometer measures how quickly something spins. You can find tachometers in engines for trains, planes, buses, cars, trucks and tractors. Standard tachometers measure revolutions of an object by attaching a sensor or using magnets to test the speed.

Going Digital

Digital tachometers can use a pulse that senses the revolutions of the object, resulting in a number you see in a digital readout. Digital tachometers can also use optical sensors like a laser or reflective tape to measure rotations of an object.

Riding in the Car

You are probably familiar with the tachometer in your car, which measures the number of revolutions per minute (rpm) that your engine’s drive shaft spins. Digital models allow you to see the rpm history for a car to help you fine-tune the car’s performance.

Big and Small

Digital tachometers come in different sizes and prices. Some are contact-less while others have connectors. You can find micro digital tachometers for use on model planes or harvester tachometers that are much larger.

Sailing the Seven Seas

You can use a digital tachometer to counts the revolutions of a ship’s propeller so you can calculate the speed your ship is traveling. For your measurement, you need to figure in the weight of the ship’s cargo, weather and any barnacles or other objects that could slow the speed.

Flying through the Clouds

On an airplane, you can use a digital tachometer like Horizon Instruments’ P-1000. Like many standard tachometers, this digital model uses warning indicators to let you know when the engine’s revolutions are malfunctioning.

The Moisture Meter – An Essential Arrow To Have In Your DIY Quiver

Posted by on August 5, 2012 No comments

The moisture meter proves itself to be an excellent and extremely useful tool in any avid DIY enthusiast’s tool box. The reason for this is that moisture happens to be all around us in the air and present in many different materials. Being in a position to be able to gauge moisture levels in any given substance can pay great dividends in the long run in many a different DIY project. For example, both concrete and wood will actually perform differently depending upon the amount of moisture that they contain.

Originally, the moisture meter was invented for testing the moisture content in timber but has been developed and modified, so that it can be used in a variety of applications. There are specific meters for specific materials and moisture meters that are versatile and can be used on many different materials.

As well as being suitable for the DIY trade this type of meter has been adopted by many different industries. These include the home and building industry, the concrete industry, the timber industry and the garden industry. Within the home, one can be used to identify any potential moisture problems in walls, floors and ceilings and well as the complete structure of the home. In woodworking, the moisture meter proves itself to be invaluable. Wood can crack, split and warp if the moisture content is too high and then it dries out. This is why many in the wood industry will test the moisture content of wood before using it. And even gardener’s swear by them. It alerts them when their prized plants require watering.

Using a moisture meter is simple enough to do, and the results are very accurate. To simplify reading these results each meter has an indicator scale that can be colour coded or give an anologue or digital reading. The results are all given in the same way, irrespective of which indicator scale the meter has. Moisture is measured as a percentage range. As most moisture meters are calibrated to wood the wood reading is extremely accurate and is in a range of 5-40%. For concrete the range is 0-100%.

The moisture meter basically comes in two forms. These are the pin meter and the pin-less meter. The pin type meter is the most used type and measures moisture content within a material. It uses 2 or more pins which are inserted in to the material and the electrical resistance between the pins indicates the amount of moisture present. These meters are very versatile and can be used on a wide range of materials. The other type of moisture testing meter is the pin less version. These work on the principle of electrical impedance and can detect moisture levels without causing any damage to the material. They are particularly good for using with wood and concrete. They test for surface moisture content and can obtain a reading to a depth of three-quarters of an inch.

Whichever field and material you wish to check for moisture content, the moisture meter is an invaluable tool to have. Buying one initially will hit your wallet but in the long run they will prove to be a great and wise investment on your behalf.

Digital Multimeters or DMMs Are Ideal Testing Equipment

Posted by on July 30, 2012 No comments

Technical community has given birth to scientific technology and with this emerging knowledge Digital Multimeters have set a huge market for itself. The various electronic and testing equipments have become the first choice of leading automatic, aerospace and other commercial production industries.

These multimeters are extremely beneficial in optimizing the configuration of speed, resolution and accuracy. Used for measuring voltage, current and resistance these multimeters are dynamic in services. Digital Multimeters often abbreviated as DMM, usually display digits in decimal format but at times can display a bar of length proportional to the quantity measured. Available at reasonable prices these multimeters come in wide ranges of features.

Latest digital multimeters are available in the market that ensures high degree of accuracy. Apart from measuring many quantities in terms of voltage and resistance, these multimeters measure frequency, conductance, inductance etc. Modern multimeters with unique features have an embedded computer makes work easier.

Other testing equipments which include Digital Pressure Gauge and Infrared Thermometers the world of technology has tremendously progressed. Used for measuring pressure more accurately and precisely digital pressure gauge is the best. Infrared Thermometers sometimes known as laser thermometers or non contact thermometers are used to measure temperature from distance. Widely used for detecting clouds, checking mechanical equipment breaker boxes, checking hot spots in fire fighting situations etc, these thermometers are of effective use.

Incorporated with positive and negative probe digital multimeters are errors free. Marked with four safety ratings CAT-1 to CAT-4 these multimeters are highly effective. Best for testing purpose these multimeters meet the basic electrical parameters and ideal for electrician, motors etc.

With the upcoming of various new standards these digital multimeters have reshaped technology with accuracy and proximity by ensuring perfect reading value. Compiled of several electrical meters into one handled unit, these sophisticated devices are intrinsically safe and best in the market.

Tips in Determining The Moisture Level of Wood

Posted by on July 22, 2012 1 comment

Determining the moisture level of wood is very important to do before using a certain kind of wood for your requirements. Usually, carpenters, manufacturers as well as hobbyists also use the moisture level of a certain wood to determine when and how the wood should be used. Wood with high moisture level over 25 percent will be bad material for furniture or many other things that should be enclosed behind the wall, since it might be easily mold and decay. In order to get easiness in measuring the level, you can use moisture meter.

In this certain article, you will find some easy and simple steps in determining moisture level of wood. You can start by turning on your device then wait the digital display to appear. Then, you can adjust the unit by pressing the calibrate button on. Then, you can press the Species button to set the species. You can scroll the display to get the selections.

Now, you can remove the pin covers. Press the pins into the wood as far as possible. Make it parallel to the grain. Then, you can look for the Read button on your device and press it. You will get the result of the measuring on the display of your moisture meter. Now, you can pull the pins and the units from the wood away. Then, you can replace the pin cover to the device.

You can actually measure the moisture of wood manually with some supporting tools and formula, but it might take longer time. Besides, nowadays you can find many options of moisture meter in the market that could be your best option. What you need to do is just determining your needs and your budget, and you can go on to some stores and suppliers near your area to get the most appropriate one for your needs.

Now, you can use your wood properly based on the level of the moisture.

Learn More About Digital Multimeters

Posted by on July 16, 2012 No comments

Only a few decades ago, if you knew how to use a multimeter, you were probably an electronics technician or an engineer. But,today,the handy test equipment known as a Digital Multimeter should be in the toolbox of every handy person. The multimeter is great for determining the working status of many appliances. Multimeters are available in either digital or analog models. Digital multimeters will display readings in numbers. Analog multimeters indicate the value with a needle over a scale. A basic digital multimeter is available at Cable Organizer.com for as little as $8.00 and up, depending on your test requirements.


Have you ever wondered why a light doesn’t turn-on? If the lightbulb is not bad, is the lamp out of order? Is the lamp cord bad? Here is one simple example of where a digital multimeter comes in handy. A useful function of a multimeter is the resistance, or “continuity” test function. To avoid the chance of electrical shock, it is important to never use the continuity test function on any appliance that has live voltage connected. Always make sure the appliance is first NOT connected to any power source.

Now with the power disconnected, set the multimeter dial to Resistance (Ohms). Touch the two test probes together (one is Red “positive”, the other is Black “negative”). The OHM meter reading will indicate zero resistance. When there is zero resistance, you have continuity. A reading of zero indicates the circuit is closed and the circuit can conduct current. Now for an easy first test, take a standard lightbulb out of a lamp socket. Touch one test probe to the bottom of the lightbulb, and touch the other test probe to the threaded side of the lightbulb socket.If you read continuity, or zero resistance, the lightbulb is good. If the meter does not indicate continuity, then you know the lightbulb interior filament is broken (current can not pass thru). The same test can be performed on two ends of a simple electrical cord. If the meter does not indicate continuity, then there is a break in the circuit, and the cord is probably cut. Remember to never test the continuity of any cord or appliance with the power on. Always first disconnect any power or current source.

To test a switch, place a test probe on each side (pole) of the switch. When you move the switch from the off to on position,the multimeter reading should change from zero to infinity. If not, then the switch is not working properly.To test a motor, touch a test probe to each pole. Again, a reading of zero indicates that the motor has continuity, current can pass through, and the motor windings are good.

After carefully studying the instructions of the digital multimeter, you will be able to move on to more detailed electrical tests. A multimeter can measure alternating current (AC or household current) or direct current (DC or battery current) in a live circuit. It can also check voltage. A multimeter can test 120 volts AC in a home circuit, or it can test DC batteries to learn if they are weak or fully charged.

Take the time now to learn how to properly use a basic multimeter. You will be glad you did when someday you would like to verify the cause of an everyday electrical problem.

How To Use A Light Level Meter

Posted by on July 11, 2012 No comments

For many persons, making use of the light meter built-in their digital photographic camera models is acceptable enough. However whenever you wish to take your digital photography competencies to a new level, you may want to take into consideration working with a light meter that is hand-held.

You are going to understand 2 types of metering:

- The first kind is reflective metering. The actual meter within your digital camera is basically reflective metering. It calculates the quantity of light that will bounce off from your subject into your camera lens. Your digital camera makes use of this info to find out variables such as the aperture, ISO and shutter speed if it is fixed on auto-mode.

- The 2nd kind of metering is often known as incident metering. Handheld light meters are mostly incident meters. The incident meters calculate the light shimmering on the subject. Simply because they are not relying on the reflective attributes of light to provide you with a reading, they are considerably more precise when compared with your camera interior meter. The dome that comes in reflective meter contains sensitive sensor that calculates the light entering it from all possible angles.

Working with a hand-held meter is easy and reasonably straightforward. When you become comfortable in making use of a light meter, you are likely to take enjoyment in the results you will get, and will not likely want to work without having it. All meters fundamentally function in a similar way so you’re able to make use of these directions for just about any kind of light meter you may order.

Enter in your digital SLR ISO setting into your meter as well as the shutter speed. Now hold the meter up facing your subject. Should you be taking a photograph of a man or lady you will hold the meter, just right in front of the face of the individual along with the dome of the light meter facing in the direction away from them.

A handful of photography enthusiasts point the light meter towards the location the electronic camera is going to be in. Should you be working with a tripod this really is straightforward simply point the meter in the direction of where you photographic camera is going to sit on the tripod. Some other photographers point the light meter towards the source of light. These people point out that the reading created by the meter while directed on the light source is at any time considerably more precise and inhibits you from receiving highlights which might be blown out. You can take a look at the two approaches to determine which is best suited for you personally.

Immediately after the meter provides read how much light on the subject, it delivers you the f-stop or aperture number you should obtain as the suggested exposure for your image. Simply set the current aperture of your camera, and you can start taking images. However, if you are shooting pics inside a studio environment, with a number of source of light you will need to require a light meter reading for every light source that hits your subject.

Digital Multimeters – An Introduction of Essential Parts and Basic Functions

Posted by on July 4, 2012 No comments

A digital multimeter is a critical and indispensable component of the electrical technician’s toolbox. Companies such as Fluke, Mastech, Tektronix, and Extech to name a few manufacture popular brands of these devices.

These electrical measuring tools range in price from as little as $10 for the most basic models to around $5000 for top of the line units. Regardless of the make or cost, digital multimeters share many of the same functions. This article provides a brief overview of the essential parts and basic function of the typical multimeter.

Display

A digital multimeter generally has a large and intuitive display that is simple to use and easy to read. Most displays have a four digit display, with the first being a 0 or 1, with a +/- indicator. Some units may also have additional displays, such as an AC/DC readout.

Connections

All digital multimeters have two connections for the probe; some models may have three, four or more. Connectors are attached to leads that are flexible, well insulated, and terminate with connectors that are appropriate for the particular meter.

The main connectors on these devices include:

1. Common connector, which is used for all measurements. The negative (black) lead probe is usually attached to the common connection.

2. Voltage, ohms, and frequency connector. This connector is used for most types of measurements. This connector accepts the red probe.

3. Amperage connector. Used for measuring amps (current), this connector also takes the red probe.

The Main Switch

Every electrical measuring device needs a switch to turn the device on and off. Digital Multimeters have one main switch used for that purpose. The main switch is normally a single rotary switch that is used to turn on the power and select the type of measurement that will be made.

Other Features

In addition to the above standard parts of the typical digital multimeter, there may be many other features on specific models made by different companies, such as additional displays and controls. Some multimeters include functions for specialized applications, such as a probe for measuring temperature, scales for measurement of decibels, capacitance, transistor gain, motor windings resistance, wiring continuity, insulation tests, and so forth.

Most manufacturers keep devices fairly simple however, and offer a standard layout that is common to all their products. This standard layout has been the norm for multimeters for many years and will likely be common for the foreseeable future – barring any new revolutionary design.

In conclusion, it is probably safe to say that whatever form these essential electrical measuring devices take in the time to come, they are certain to be found in every electrician’s tool kit for many years to come.

The Comparison of Digital Multimeter Mastech MS8261 VS Sinometer MS8269

Posted by on June 28, 2012 No comments

If you plan to select a digital multimeter and there are two meters for your reference. Sinometer MS8261 and Mastech MS8264. Which one you will decide to buy. Yes, many people will feel very puzzled about this choice. Because they are too alike, whether from appearance or the fuctions. The only difference is that the MS8264 can be used to test frequency but the MS8261 can’t. All other features are almost identical. If you can’t make a decision, let’s read the following comparison form at first and take a close comparison to make a wise choice.

Models MS8261 MS8264
Measurements
DC Voltage 1000V 1000V
AC Voltage 750V 750V
DC Current 10A 10A
AC Current 10A 10A
Resistance 200M 200M
Frequency NO 20K Hz
Capacitance 20uF 20uF
Inductance NO NO
Temperature NO NO
Diode test YES YES
Continuity test YES YES
hFE YES YES
Features
Range Selection Manual Manual
Digits 3 1/2 3 1/2
Counts 1,999 1,999
Bargraph NO NO
Back light YES YES
Data hold YES YES
Overload protection YES YES
Auto power off YES YES
Resettable fuse YES YES
Battery indication YES YES
Safety CAT.II CAT.II 1000V CAT.II 1000V
Safety CAT.III CAT.III 600V /
Dimensions
Power 9V (6F22) x1 9V (6F22) x1
Size 195×92×55mm 195×92×55mm
Weight 380g 380g