Rabu, 30 November 2011

Infrared Moisture Analyzer-Infrared Moisture Analyzer-Portable Moisture Analyzers

Infrared Moisture Analyzer-Infrared Moisture Analyzer-Portable Moisture Analyzers

Infrared Moisture Analyzer is a sensitive part of the equipment used to specify the moisture content of various samples. Meanwhile you're sitting on a sample of electronic balance, the room heats the sample with infrared radiation.

MJ33 Infrared Moisture Analyzer
Mettler Toledo MJ33 0.01 Percent Moisture Content Readability Infrared Moisture Analyzer
The MJ33 Infrared Moisture Analyzer offers rugged design, basic functionality, and simple operation for daily routine inspection. It is particularly well – suited for use on the factory floor where samples are tested day in and day out requiring a simple and rugged instrument that provides a very long service life. The MJ33 uses two metal heating elements that dry the sample and deliver reliable results (0.05 percent repeatability moisture content). Routine work is made simple by the instrument led, step by step testing instructions displayed on the LCD back lit display. Fixed end point determination omits the need for programming the switch off criterion further simplifying the operation of the instrument. The MJ33 reliably verifies whether the moisture content meets the specifications, sample by sample, day in, day out.

Halogen Moisture Analyzer
Mettler Toledo HR83P Halogen Moisture Analyzer With Built In Printer
The HR83P Mettler Toledo is the analysis of humidity ideal professional solution for regulated environments. With state of art measurement technology, HR83P allow a reliable analysis of substances with very low the moisture content. A resolution of 0.001 percent and 0.01 percent the moisture content the moisture content measurement repeatability deliver exceptional performance. Circular halogen moisture analyzer 'lamp and gold-plated reflector design ensures excellent reproducibility and rapid heating of your sample. You can also choose from 4 programs drying, a standard step, fast, gentle, and multi for your tailor testing to achieve optimal results within a few minutes. It also comes AutoMet HR83P, methods Mettler Toledo's development program. With AutoMet, the optimal testing methods can be developed for you by the entry of a simple substance of some of the reference and the target value cut development time by 50 percent. Up to 40 test method can be stored for quick and easy to remember and repeat testing. Operation of the moisture analyzer is made easy with backlit LCD and intuitive menus. For full regulatory compliance, HR83P comes equipped with 3 levels of password protection, and fully traceable sample identification and checking of instruments to secure and documented results. HR83P model comes with a built in printer, allowing you to get a print out of your test results without having to connect to an external printer.

Portable Moisture Analyzer

Portable Moisture Analyzer
Convenient and portable, this analysis could see moisture quickly check the performance of gas dryers for compressed air, breathing air and pure gas supplies. Planar capacitive sensor combines accurate dewpoint measurements with fast response time. The sensor is stored in a very dry environment in which speed up the analysis of response time measurements. This instrument can be configured according to the desired moisture unit of measure, unit of measure temperature, or other operating parameters. Measures dewpoint in the shoulder straps come standard planar gas sensors in the drying chamber for various pressure dewpoint measurement fastest response-100C to +20 C humidity user selected measurement unit Fully portable - powered by four common "D" batteries with auto shut down feature two non-IS output large voltage Auto 4 digit LCD screen turn off the timer.

Liquid Level Transmitter-Liquid Level Measurement-Liquid Level Sensor

Liquid Level Transmitter-Liquid Level Measurement-Liquid Level Sensor

Liquid level transmitter LS-10 is designed for economical and reliable performance in a wide range of level measurement applications. LS-10 provides 4-20mA output signal and an accuracy of 0.25 percent of span. Standard pressure ranges are assembled with full-length cable for fast delivery. Compensation for changes in atmospheric pressure is achieved through a ventilation tube in the cable. Many accessories, including cable clamps, dryer drying cartridges, additional weights, and junction boxes are available for special installation requirements. This model can be equipped with attachments LevelGuard for protection in difficult environments. Body: Stainless steel. Pressure connection and diaphragm: Stainless steel. Protective cap: PA. Power supply U (B): 10.

Feature of Liquid level transmitter

WIKA LS-10 Submersible Liquid Level Pressure Transmitter with 40' Polyurethane Cable, 4 - 20mA 2-Wire Signal Output, 25 PSI Range, <= 0.25% Accuracy, G1/2B Pressure Connection

Liquid level measurement in water and wastewater treatment plants, wells, holding tanks, wet wells, rivers. Piezoresistive sensor technology, Ranges from 50 InWC to 400 psi. Rated IP 68 for permanent submersion, Hastelloy case available for aggressive media. 4-20 mA 2-wire output signal, others available, lightning protection available. 145 psi Maximum pressure and 170 psi burst pressure.

Flowline Ultrasonic Level transmitter-Ultrasonic Level Sensor

Ultrasonic Level transmitter-Ultrasonic Level Sensor

Ultrasonic level transmitter detects the level of flow line fluid levels of substance. Liquids and solids of fluid basically flow in the container or tank by gravity whereas most bulk solids pile on the corner of the recess to the top. The substance to be measured can be in a container or can be in natural form (e.g., rivers or lakes). Level measurement values can be either continuous or point. Continuous level transmitter measures level within a certain range and determine the exact amount of the substance in a certain point, while point-level sensors only indicate whether the substance is above or below the sensing point. Generally, the level detected is too high or too low.

Flowline Ultrasonic Level Transmitter for medium tanks

Flowline Ultrasonic Level Transmitter for medium tanks; 2" NPT(M); 12 to 36 VDC; 4 to 20 mA output
Flowline Ricochet Small and Medium Bulk Tank Ultrasonic Level Transmitters and Controllers. Product Type: Ultrasonic Level Controls. Mount: 2" NPT(M). Temp range: -40 to 140°F(-40 to 60°C). Pressure rating: 30 psi at 25°C. Range: 6 in to 12 feet. Beam dimensions: 8° conical width. Resolution: ±0.125". Brand: Flowline. Model: LA20-5001. Power (VDC): 12 to 36. Signal output: 4 to 20 mA. Accuracy: ±0.25% of span. Material: polypropylene housing. PVDF transducerViton® gasket. Part Number: AO-43303-32. Package Quantity: EACH

 Echotouch Flowline Ultrasonic Level Transmitter

Flowline Echotouch Level Ultrasonic Transmitter; power: 18 TO 36 VDC
Order model 43312-00 for general applications. Choose intrinsically-safe, CSA-approved model 43312-10 for use in hazardous locations. Easily install these two-wire transmitters into your process. LCD reads in either inches or centimeters. Order model 43312-00 for general applications. Choose intrinsically-safe, CSA-approved model 43312-10 for use in hazardous locations.

Flowline EchoSpan Ultrasonic Level Transmitter
Flowline EchoSpan Ultrasonic Level Transmitter; 32.8' Range, 2
The general purpose two-wire ultrasonic level transmitter provides non-contact levelmeasurement up to 32 'or 10m, and is ideally suited for challenging corrosive liquids, coating or waste. Transmitters are widely selected for atmospheric bulk sotrage, daytank, process vessel and waste sump applications. Examples include ink and mediawaste water. FEATURES Offered in five measurement ranges up to 32.8 '(10m) with two regular transduser''Luar 7.6 cm diameter beam for applications with limited space the band's amazing 5cm dead optimize the capacity of the small vessels filled Installation is both fast and sim.

Selasa, 29 November 2011

Differential Pressure Transmitters Calibration Guide

Differential Pressure Transmitters Calibration Guide

wire pressure transmitters
Differential pressure transmitter measures the pressure difference between two different environments. Two level transmitters are connected to two columns and used to measure the pressure of a column with respect to other columns. For example, the pressure of a column of water will be reduced from the pressure of other water column to measure the differential pressure. Calibrated pressure transmitter is very important to get the accurate measurement. Pressure transmitter calibration of these devices can be done in a few short steps.
Suunto Wireless Tank Pressure Transmitter for all Suunto Computers
1. The contents of two columns of the pressure transmitter with a liquid. The second column will be connected and will have a level transmitter that is located on the column.
DGC52 : Pressure Transmitter, 0-400" Water

2. Perform the pressure transmitter calibration by setting a single column at the level of 0 percent - that is, even with the level of liquid level transmitters, so the pressure transmitter measures 0 per cent - and one column to be at 100 percent. Selection of level for this column is arbitrary as a transmitter only measure relative changes from one column to another. However, choosing round numbers, such as 1,000 millimeters of water column (mmWC).
CP Pressure Transmitter, 0 To 50 PSIG; 1 To 5 VDC Output, 1/4" NPT(M)

"These OEM pressure transmitter/transducers feature a sputtered thin film sensor to provide consistent high levels of performance and stability for large volume OEMs. A choice of electrical outputs means the unit is suitable for most applications without modification."

3. Multiply the height of the liquid with a specific gravity of liquids and re-calibrate the transmitter to a new height of liquid column to measure pressure in one particular column. Differential pressure transmitter should now be ready to take measurements.

Pda-H315:Trnsmtr -30/0inHg Digital Pressure Transmitter
PDAs Series digital pressure transmitter sensing technology integrates the latest solid state to be very flexible, easy to operate package. Adjustment range of programming features include programmable, pulse ease, zero (between) the adjustment and the user code settable lockout. Ceramic sensing system ensures a very long life cycles with virtually no shift in calibration. These features together with the package, a strong stainless steel compact PDA makes an ideal choice for OEM applications.

High-accuracy pressure transmitters

High-accuracy pressure transmitters with combination ½" NPT(F) conduit/cable compression fittings, 0
Transmitters offer exceptional long-term stability and enhanced accuracy. Typical applications include load weighing systems, compressor and dispensing equipment, lube oil pressure equipment, and factory automated equipment. RFI/EMI and ESD protection circuits exceed CE requirements protecting against noise, voltage spikes and static discharge. State-of-the-art ASIC chip in each transducer provides greater linearity correction than traditional thermal compensation methods.

Senin, 28 November 2011

Tips on Home Blood Pressure Cuffs Calibration

Tips How to Calibrate Home Blood Pressure Cuffs Calibration

Omron HEM-711AC Automatic Blood Pressure Monitor with Standard Cuff
When you are having high blood pressure and your doctor has instructed you to monitor and record your blood pressure at home, you will need to get a home blood pressure monitor cuff. Monitoring your blood pressure at home may be useful for someone who has a "white coat syndrome" and that elevates blood pressure during artificial office.

However be nervous at the doctor, you might ask yourself, how do I know that this house machines accurate? That's a reasonable question because the accuracy of the clinical accuracy of the reading lies with the home machine. So, how does one determine whether home blood pressure machines accurate? Simple. All you need to do is calibrate your home blood pressure cuff. Calibration here means to check the accuracy of measurement of blood pressure in your home with a standard monitor (in this case the doctor). This how to will tell you what you need to do to calibrate monitors and home blood pressure cuff so you'll feel confident in reading 'it.

Here are some tips How to Calibrate Home Blood Pressure Cuffs

Omron Healthcare - New 2007 HEM-711DLX Automatic Blood Pressure Monitor with ComFit Cuff
Purchase of Home Blood Pressure Monitor. They vary in price and size. Some monitors biceps while the other wrist monitors. You might want to check with you are doctor for the type and brand that he recommends.

Schedule an appointment with you are doctor. Tell them you want to calibrate you are home blood pressure monitor.

Take your blood pressure reading at the doctor's office you use your home blood pressure monitor. Write down the reading.
Omron Deluxe Blood Pressure Monitor
Did the doctor or nurse to measure your blood pressure using the office of their blood pressure machine. Write down the reading.

Repeat blood pressure readings in 15 minutes using both machines. This is optional, but it is a good idea.

Compare the two readings. When they are the same - great! If they are off by a few points-note that in your notes. When the difference is quite large, you are may want to return the blood pressure monitor a specific machine and buy a new one.

Minggu, 27 November 2011

Best Flue Gas Analyzers-Exhaust Gas Analyzers

Best Flue Gas Analyzers-Exhaust Gas Analyzers

Best Flue Gas Analyzer-Exhaust Gas Analyzers
A chimney flue carrying exhaust from the boiler or furnace and out of buildings. Consist of exhaust byproducts of combustion that occurs when oil or gas mixed with air and ignited in the boiler. A flue gas analyzers take samples of these gases, and their chemical composition analysis. It tracks whether the boiler running at peak efficiency, or whether it is to release high levels of pollutants like carbon monoxide or sulfur. Although each of the exhaust gas analyzer works a little differently, the basic principles are the same.

Flue gas analyzers, also known as the analysis of refinery gas, plays a very important role in the field of environmental chemistry today. Effluent flue gas is a product with high temperature combustion boiler used in the cracking and refining. Exhaust gases of particular interest to environmental chemists due to the fact that it has several components or chemicals in them that could potentially harm the environment if released unchecked. As a means to monitor the waste flue gas, flue gas analysis is positioned so as to keep tabs on the components and concentrations of the components found in the flue gas.

Here are flue gas analyzers selection:

Choose from a complete line of CO and flue gas analysis. All units of measure CO and depending on the model, you can also measure O2, temperature, pressure, and NO. Calculate CO 2, the gross net efficiency, excess air and NOx. All models include investigation of waste and bags. Choose the right model for you. Note: When selecting oil as fuel be sure to use the optional oil filter TP773 or reading can be erratic. You must use a kit that includes regulators TP715K3 TP784 when working on diesel oil and petrol pump pipe TP784 compression flow regulator must be used in any application where high velocity pressure is present

Exhaust Gas Analyzer

Universal Enterprises AGA5000 Gas Analyzer

This Exhaust Gas Analyzer is the exhaust gas is completely portable analyzer that sets new standards of comfort and ease of use. It fits comfortably in one hand and can run up to four hours on internal battery re-charged. Programmable four-or eight-line backlit display shows the measurement in real time. AGA5000 was made to use an additional covering machine fault diagnosis and tune-up verification. Checking the integral flow probe to provide warnings or blockage of the filter. Exhaust Gas Analyzer Calibration procedure allows the unit to be calibrated using standard gases of automotive testing. One year limited warranty. Includes protective rubber boot, water trap and filter, carrying case, battery charger, exhaust inspection and five extra filters.

Best Carbon Monoxide Analyzer-Carbon Monoxide Gas Analyze

Best Carbon Monoxide Analyzer-Carbon Monoxide Gas Analyze

Carbon Monoxide Analyzer

Carbon monoxide gas is odorless and colorless which is formed from incomplete combustion of organic compounds. Most of the deaths caused by carbon monoxide is usually the result of the fire building. However, a significant portion is caused by damaged or blocked exhaust system. In addition, these gases can be very toxic because it is effective in blocking the delivery of oxygen and the most severe effects of organs such as brain and heart. At this time, this article will give you some tips that will help you to look at carbon monoxide poisoning.

Here are carbon monoxide analyzer selections:

CO91 is used to check ambient CO levels, find leaks along flue pipes, or measure the concentration of CO in the flue gas from furnaces or residential combustion appliances. With links to optional infrared printer, results can be printed to document test results, including the date and time. Perform adjustment tool, and then given the highest level of CO to CO Max function. With this function you can test the temperature of the outlet temperature register, or monitor the temperature of the stack gas. Three year limited warranty.
  • Simple to operate DMM style selector
  • Measure ambient levels of CO or CO concentration in flue gas
  • CO. MAX capture the highest value
  • Measurement of ambient temperature for gas or pile
  • Auto-zero at power up
  • Get UEI C091 Carbon Monoxide Analyzer with Carrying Case today!
Analox Carbon Monoxide Analyzer

Analox Carbon Monoxide Analyzer

Carbon monoxide - the problem: - small CO concentrations can affect the body, and symptoms can include headache, fatigue, confusion and dizziness. Too long may cause unconsciousness, brain damage or even death. - A number of incidents of CO poisoning in sport divers have been reported worldwide. In August 2010, the Australian divers reported experiencing CO poisoning. He was flown by rescue helicopter from diving in North Queensland, with symptoms including memory problems and severe headaches. Specifications - Sensor range: 1 to 50ppm CO - Sensor accuracy: + / - (1% FS + 5%) - Sensor response time: <20 seconds - Sensor drift: <6ppm CO (annual) - Power: one 9V PP3 battery - Display: 2 digit - operating temperature: 0 to 50degC - Storage temperature: -10 to 50degC

Get Analox Carbon Monoxide Analyzer today!

Kamis, 08 September 2011

Exhaust Emissions Standard and Test

Portable Exhaust Gas Analyzer
As the Earth rotates toward a greener future, standards for emission is ever growing. Does that exhaust emissions or the burning of fossil fuels for energy, demand to reduce the harmful gases and particles has become a major focus of organizations and governments around the world. Emission targets include Carbon Dioxide, Methane, Nitrous Oxide, halocarbons, and sulfur hexafluoride.

A well maintained old car can have cleaner exhaust and lower emissions than the five-year-old car that has not been maintained. The key is to properly maintain your car, and be careful with major modifications. Some modifications can result in close scrutiny include things like modifying the exhaust to remove the catalytic converters. Exhaust leaks can also cause failure. One of the main causes of high emission levels is a car out of time, enough to have set the time correctly is a great first step. Non-sealing gas cap can cause problems by allowing the escape of gas vapor, it is checked in several countries. The EGR (exhaust gas recirculation) valve should work fine. EGR valve routes you back to some of the exhaust manifold is basically re-burn to reduce emissions.

Oxygen sensors in most new cars can also lead to failure if it is damaged. Oxygen sensor that measures how much oxygen in the exhaust, and report that information back to the engine computer. If the sensor does not work properly, the engine computer can not properly manage machine.

Many of the sensors and the item will result in check engine light in a car, so make sure your car is fixed and does not have a check engine light visible. Catalytic converter is the most expensive item, most likely, so check everything else first. So, your plan of attack must, make sure there is no check engine light on.

Make sure that if you have a big engine or exhaust modifications that they were able to test emissions. Having set the time correctly.

Make sure you drive the car until the first warm because the catalytic converter needs heat to work. A good fuel additive can also help with Performance Improver Amsoil fuel additive formulated to reduce  hydrocarbons by 15 percent, and reduce carbon monoxide by 26 percent, and reduce nitrogen oxides to 17 percent, all for about ten bucks.

Please also check out our other guide on: Flue Gas Analyzer Calibration and Exhaust Gas Analyzer guide!

Exhaust Gas Analyzer Finding Leaks Exhaust System and Measuring Vehicle Emissions

Exhaust Gas Analyzer
Car exhaust gas analysis is quickly becoming must-have for all drivers. Whether you are a mechanic or just an average driver, there is an exhaust gas analyzer is available for your needs. Exhaust gas analyzer will measure the gas species present in the sample. It gives you the reading system for the operator. This is very useful for finding leaks in the exhaust system and measuring vehicle emissions. This tool can find a variety of gases such as carbon monoxide.

If there is a problem with the vehicle engine management system, the first sign that you will see is the fuel to the engine is not included in the right proportion when compared with air. When this problem occurs, your car or your vehicle will not run efficiently as it was designed for. Inefficiency This will affect the vehicle in two aspects. The first is the inability of the machine in providing the necessary strength as in normal conditions. Another effect is a car or vehicle will require more fuel to start. This tool also helps you to understand the problem in the machine quickly and efficiently. You will be able to repair the damage quickly. The most basic of car exhaust gas analysis can check whether you are in vehicle emissions regulation. This tool is fast becoming the first mechanical device to look into their arsenal when seeking maintenance issues.

Car exhaust gas analyzers vary in type and consequently prices vary. Make sure you know what you want your exhaust gas analyzer to do. You do not need expensive one that you will not be able to fully exploit, but you do not want to get one that will not be widely used. The simplest of analysis giving the appearance of lines whether or not gas is present, whereas a more sophisticated system connected to the computer to provide full details of the gas emissions and very accurate.

Rabu, 07 September 2011

Micrometer Calibration

Micrometer Calibration
Micrometers are commonly found in engineering to determine an accurate measurement, even when measuring small distances. Internal micrometer and other forms of micrometers commonly used when conventional methods such as using a tape measure will not produce a level of accuracy. This is a screw that is tightened to allow the distance to be measured with this type of degree of accuracy. During the screws have been manufactured using precise production techniques and a high standard, micrometer itself will result in readings with a very low margin of error along with a high degree of precision.

• Ensure that your calipers are free from dirt or other substances,  before you start with the actual calibration process. Took the lint-free cloth (such as those used in cleaning glasses), you thoroughly clean the caliper to remove dirt from the head and body calipers.
• Next you will need to zero your calipers. To do this, bring the caliper jaws as close as you can get, basically ensuring that they are closed. Once there, zero calipers.
• Test repeatedly to ensure that the readings are accurate and consistent, after the suppression calipers. Open calipers continue as far as they can be opened and closed again. Digital display should always register "zero", or at least one unit of the smallest number (about.001, if you caliper can read that amount). If there is a greater amount than what is given above, then you may need to skip a step and head on over to the latter.
• Test against the shims, and optionally measure the block. Using shims only find a few objects that measure from one to two to three inches and beyond. First measure the thickness of the object, and then try again with the shim in place, the difference should be well suited for measurements with and without the shim is in place. If they do not then the last option is what you should look into.
• Get a professional calibrate your calipers, if you can not really scratch the caliper. Contact the manufacturer for ideas where you might be able to get a calibration service for free or at minimal cost.

Pressure Calibration Equipment

Digital Pressure Calibrator
A pressure calibration equipment is widely used in industrial production. There is a high accuracy sensors and equipment that are available are suitable for calibration of other instrumentation such as pressure gauges, pressure transducers and transmitters. Some calibrators chosen for meteorological, laboratory, and using the factory.

There is an outline of the pressure gauge calibration products used for various purposes. Whether they are used to increase the volume of industrial production or for some other applications, they are quite important.

Most Common Type Pressure Gauge:

One of the most common type of pressure gauge is a waterfall or other type of pencil. Although such type of equipment is calibrated, but some of the cheaper is not calibrated. Please remember that this type of measure common plunge, that you buy, be accurate to + or - 3 psi when new. In general, the accuracy of such gauges will be affected by temperature, and humidity.

Quality is Number one:

Calibration pressure transducer
Regardless of the type of measurement you choose, there is a high and low quality of available gauges. The most cheap gauges are not calibrated. And if reading is not accurate, measure would be pointless. Therefore, you should spend a little more to get a quality pressure gauge which can be easily calibrated for accurate results the better. You do not have to compromise with the quality considering the price of equipment.

You'll find a lot of pressure calibration services, for example rscalibration.com, that you can choose for the purpose of calibration of pressure instrumentation. If you want to get big production, you need to get the equipment calibrated pressure regularly. In addition, your pressure measurement instruments and pressure calibrator  may need to be calibrated regularly to have standards like ISO9000 quality system.

Calibration Equipment, Services and Software

Metrology and Calibration
Calibration is the evaluation of measurement-one measure of truth which is known or made ​​or arranged with one particular device and other measurements made ​​in a similar manner possible with the gadget second.

Calibration is the process in which the instrument is marked in accordance with the values ​​generally accepted. Calibration of equipment is the key to the calibration mark. There are a variety of calibration equipment available in the United States, with a large number of companies specializing in precision instruments widely used in industrial companies, defense and commercial.

Calibration provides detailed information on Calibration, Calibration Equipment, Calibration Services, Calibration Software and more. Calibration is affiliated with Custom Die Cutting.

calibration Equipment

Calibration Equipment can be termed as the process by which measuring instruments compared with standard measurements to regulate the relationship between values ​​indicated by the device and those standards.

Calibration Software

There are different types of calibration software packages are available and are generally divided in calibration management software, calibration management software laboratory and measurement equipment maker software separate from the general calibration software.

Calibration services

Calibration service involves checking the performance of various equipment with the help of different means of measuring. Equipment is checked according to their function and their ability to perform and this service allows you to determine whether your equipment works the right way. For live service, a number of tools and techniques available. They offer a commercial instrument calibration test material to test and inspect the equipment varies. This service gives you the confidence and support that allows your engine to function better.

Jumat, 01 Juli 2011

Micrometer What is it?

Micrometer What is it?

Micrometer Calibration
A micrometer, sometimes known as the size of the screw micrometer, is a device combining a calibrated screw is widely used for precise measurement of small distances in mechanical engineering and machinery as well as most mechanical trading, along with other metrological instruments such as dial, vernier and digital calipers . Micrometer often, but not always, in the form of calipers.

How to Operate a Micrometer?
Using a micrometer screw principle to strengthen the small distances that are too small to measure directly the rotation of the screw is large enough to be read from the scale. The accuracy comes from the accuracy micrometer threadform that at its core. Basic operating principles of a micrometer is as follows:
The amount of rotation of a screw can be accurately made directly and precisely correlated with a certain amount of axial movement (and vice versa), through a constant known as the lead screw that. A lead screw is moving forward with the axial distance of one complete revolution (360 °). (In most of the yarn [ie, all threads in a single-start], lead and pitch refers to basically the same concept.)

With the right lead and a major diameter screw, a given amount of axial movement will be strengthened in a circular motion generated.
For example, if the lead screw is 1 mm, but large diameter (here, outer diameter) is 10 mm, the circumference of 10π screw, or about 31.4 mm. Therefore, axial movement of 1 mm reinforced (enlarged) for movement around 31.4 mm. This allows amplification of small differences in the size of two objects that are measured together to correlate the large difference in the position of the micrometer thimble.

In older micrometer thimble position is read directly from the scale marks on the thimble and the spindle. A Vernier scale is usually included, which allows the position to be read for a fraction of the smallest scale marks. In the newer digital micrometer, electronic readout that displays digital length on the LCD screen on the instrument. There are also mechanical digit version, such as car odometers style in which the number "roll over".

Different Types of Micrometer

Basic Types of Micrometer
Top image shows the three most common types of micrometers, the names based on their application:
Outside micrometer (aka micrometer calipers), typically used to measure wires, spheres, shafts and blocks.
Inside micrometer, was used to measure the diameter of the hole.
Depth micrometer, measure the depth of slots and steps.

Special Type Micormeter
Each type of micrometer caliper can be fitted with a special ground spindle and tips for specific measurement tasks. For example, the foundation can be established in the form of screw thread segments, in the form of v-blocks, or in the form of large discs.
Universal micrometer sets come with interchangeable base, such as spline flat, round, disk, blades, points, and knife-edge. Universal micrometer long can also refer to a type of micrometer is frame has modular components, allowing one to function as a mic outside micrometers, depth mic, step mic, etc. (often known by the brand name Mul-T-Anvil and the Uni-mike).
Micrometers have a set of knives that fit a narrow tips (blades). They allow, for example, measurement of o-ring groove narrow.
Pitch-micrometer diameter (aka thread mic) having a set of matching thread-shaped tips for measuring the pitch diameter of screw threads.
Limit your mic has two base and two spindles, and is used as a flash meter. The part being inspected must pass through the first gap and must stop at the second gap to be within specification. Two gaps accurately reflect the top and bottom of the tolerance range.
Bore micrometer, usually the head of the runway at the base of three micrometers are used to accurately measure the inside diameter.
Micrometer tube has a cylindrical base positioned perpendicular to the spindle and used to measure the thickness of the tube.
Micrometer stop essentially the mic mounted on a manual milling machine table, bedways of a lathe or other machine tool, in place of simple stops. They assist the operator to precisely position the table or train. Quitting can also be used to run the kickout mechanism or limit switches to stop the automatic feed system.
Micrometer ball has a spherical (ball) runway. They may have one flat and one ground ball, in which case they are used to measure the thickness of the tube wall, the distance from the hole to the edge, and the other a distance where the foundation should be placed against the rounded surfaces. They differ in the application of the micrometer tubes in that they can be used to measure against the rounded surfaces that are not tubes, but grounding the ball may also not be able to get into a small tube is as easy as micrometer tubes. Micrometer balls with a pair of balls can be used when the tangential-contact point desired on both sides. The most common example is in measuring the pitch diameter of screw threads (which is also done with a conical base or 3-wire method, the latter of which uses the same geometry as an approach to couple-of-ball).

How to Calibrate a Micrometer?
1. Zero error
Micrometer zero error checked and if zero errors are observed which can be set equal to zero by adjusting the barrel of the maxim, if possible, zero error should be indicated in the results of calibration and compensation in the final report.
Errors in the scale is determined by measuring the slip of the following measures:
2.5, 5.1, 7.7, 10.3, 12.9, 15.0, 20.0, 17.6, 20.2, 22.8 and 25 mm (IS 2967:1983)

2. Boredom
Flatness error is checked by keeping the optical flat on the ground each under monochromatic light. A number of disorders colored edges will be visible on their surfaces. Flat adjusted such that the minimum number of bands obtained. To tolerances specified in faltness, maximum four bands have formed. Flatness is defined as an nxl / 2, where n is the number of bands and l is the wavelength of light used.

3. Parallelism
Parallelism between the two base error was tested by optical parallel gripping three different thicknesses of different positions which include a circular scale.
In each case the number of edges appearing on the second runway are calculated together. Of the three cases, the assessment of parallelism on the basis of the maximum number of edges.
Flat is placed between the faces measured and adjusted in a way so that the number of bands seen on one face of interference are minimal. The number of bands on the other face is calculated which generally should not exceed 8, to 0-25 mm. Recommended thickness of the optical flat is 12.5, 12.625, 12.750 and 12.875 mm.
Parallelism error between the runway = N x λ / 2
Where 'N' is the maximum number of edges appearing on the second runway and λ is the wavelength of light used.

4. This micrometer micrometer clamp mounted in the stands.
5. Temperature before starting the calibration is recorded on data sheets.
6. Slip gauges measured one by one in order to improve and then in the corresponding readings of the micrometer (estimated to be 1/5th scale circular division recorded on data sheets the same procedure followed in decreasing order and the micrometer readings. Recorded on data sheets. This form of Two sets of such sets of measurements of the measurement is taken to make a total of four observations at each measuring slip ..
7. Temperature after the measurement is recorded.

See also:

Selasa, 28 Juni 2011

Scale Calibration for Getting Accurate Measurements

A scale is a measuring tool to determine the weight or mass of an object. A spring scale measures the weight with a spring range shift under load. Comparing the torque balance on the arm because the weight of the sample to the torque on the arm as a standard reference weight using a horizontal lever. The balance is different from the scales, the balance measure the mass, while the scale measures the weight. Scales used in industrial and commercial applications, and products from feathers to loaded tractor-trailers that are sold by weight. Specialty medical scale and bathroom scales used for measuring human body weight.

Scale Calibration
Scale calibration is the process used to ensure that the weight scale is to provide accurate information. To scale commercial use, calibration may be needed every few weeks or months, to confirm that the scales are still hard to accurately, while the scale of the house may be left uncalibrated for quite a long time

Scales began to show an accurate weight for various reasons. Sometimes the scale components become worn, change to read, and environmental factors may play a role as well. For example, the scale of many who do not perform well in cold air, and the scale calibrated to work in an environment such as a bakery; warm and humid conditions may be turned off if brought to a cold store room. The more the scale used, the more likely it is that inaccuracies will arise.

The best way to calibrate the scale is to use a known weight to see if it returns the correct measurement scale. Some companies manufacture special weight to be used in the calibration scale, but it is also possible to use something like a sack of flour, a set of barbells, or other heavy objects that must be known. To calibrate the scale, the weight is set on a scale and read the note. Furthermore, the scale can be adjusted until it yields the correct weight measurement.

Some scales adjusted only with screws or levers that can be moved. Digital scales may have a special key used in the calibration scale. Owner's manual for the scale usually provides specific information on calibration.

Most people use different weights for a calibration scale to confirm that the scale is correct within some range. Some scales may be less accurate at low load, in terms of adjustments to the low weight on the scale can get rid of the scale at a higher weight.

Senin, 27 Juni 2011

About Temperature Calibration

calibration of a thermometer
Calibration is a process of comparing the response of the instrument to agree with standard instrument for measuring range, to determine the deviation between the measurement values ​​are correct and appropriate
value (an industrial calibrator is thus "true value").

In order to maintain consistent quality of products manufactured, it is required to perform the calibration process on the sensor and instrument. There is is the philosophy of some of the calibration measurement and control circuit. The basis of the method chosen must always be to incorporate temperature sensor. 

This does not make sense just to calibrate and adjust the electronic part of loop. A rule of thumb says that only 10% of the total error in electronics, nad the other 90% is in the sensing element. So it is important that
temperature sensor is tested, mean physically affected by the desired temperature. A dry-block calibrator is an easy method for creating a "process" temperature.

The output of the sensor can be taken from anywhere in the loop and the rest of the loop can be tested electronically.

Related artilces you may interested on How do You Calibrate a ThermometerThermometer Calibrating tips and Calibrating Thermometers guide.

Sabtu, 11 Juni 2011

About Pipettes You Should Know

what is a pipette

A pipette is a kind of chemical dropper used in laboratory experiments to measure the volume of transport equipment and chemicals. There are different designs of pipette but they all have same function. Pipette is entered into a vessel containing fluid, in which he creates a vacuum. The vacuum suction draws up that appointed by number of fluid and to distribute to that others. Pipette well-made borosilicate, alumino silicate or quartz. Let's look four type of pipettes:
  • Micropipettes are made to measure and release small amounts liquid. Micro pipettes released between the 1 and 1,000 microliters. They are frequently used in injection experiments and measurements, because they are very precise. 
  • A volumetric pipette, such as volumetric flasks, are used to measure and released a specified amount fluid to add others. Some of different sizes available for measuring predefined number of liquid, with that milliliter of popular sizes 10, 25 and 50.Volumetric A pipette that most are often be used in titration of experiments.
  • A graduated pipette works similarly graduating cylinder. It is indicated by a series ofgraduated line for measuring the quantity of fluid before and after eliminated. It is notas accurate as a volumetric pipette, but it serves its purpose.
  • A desert is a dropper pipette basis are used to attract and released a number ofrandomized fluid. It is not calibrated to a certain volume. This species is similar to a large dropper pipette.

Jumat, 10 Juni 2011

Electronic Torque Wrench

Electronic Torque Wrench

 Electronic Torque Wrench is a precision hand tool designed to allow precise manual tightening threaded fasteners. The tool is designed around a conventional ratchet lock with standalone microprocessor built into the handle lock. Control housing include the operating controls, indicator lights, audible alarms, digital display and electronic controls. A final protective caps at the end of the wrench handle providing access to a container 12-pin to connect the battery charger, plates XY, interface, or a test connector. Spanner has the capability show that desired angle and tightening the bolts and mechanical properties together for optimum tightening of force. 

What should an excellent Certificate of Calibration Contain?

Certificate of Calibration

An excellent Certificate of Calibration should contain:
  • Name and address of Customer
  • Instrument and the type
  • Instrument Serial Number
  • Date Of Test
  • Date of next Test
  • Equipment used to carry out the calibration and serial numbers
  • Measurements
  • Interpretations of the figures
  • Statement of confidence probability
  • Statement of traceability
  • Ambient temperature at the time of calibration (If On Site)
  • Signature of calibration Engineer
Please see also:

Why do your Instruments need to be Calibrated

Instrument Calibration Process
Each tool used to measure physical parameters have a particular accuracy. This means that over the time period it is might to experience a number of drift, that would generate false readings if the instrument is used to measure these parameters.

Regularly calibration of instruments is the most satisfied method to make sure the best performance for any instrument.