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2012年8月29日 星期三

The Impact Of Moisture Analysers In Quality Control


For those individuals that are not acquainted with industrial processes and the importance of ensuring that the final product keeps up with the ever increasing and changing quality controls that have to be enforced, it may be quite interesting to learn that moisture analysers play an important role in most industries.

Before the tin of paint reaches the shelves of the warehouse, before the dog food bags is delivered to vet's and pet shops, before you can enjoy a package of potato chips or sip a delicious cup of Jamaican coffee or before the pharmacist is able to sell you that pain killer, the different manufacturers involved had to make a thorough control of the manufacturing process of the different products in order to be sure that the medicine, the coffee, the potato chips and the paint meets the quality standards set up by each and every industry. And in that control, moisture analysers are essential.

Some chemical components present in certain medicines are highly sensitive to excessive humidity and this is why labs and pharmaceutical facilities need to rely on humidity sensors in order to determine if the environment is too wet. If it is, then adjustments have to be made in order to prevent humidity from reducing or altering the healing properties of the chemical compounds.

Something similar occurs with the paint industry. In order to be able to provide great coverage, it is very important for the components used to make paint to be in a moisture balanced environment. If the environment is too wet or too dry, then paint may not adhere properly on to walls or the tints used may not deliver the desired color.


Food industry, both for humans and for pets, is also an important user of moisture analysers. They help manufacturers determine the most appropriate humidity level for the food product they are producing in order to ensure that they taste yummy and that they look and feel attractive to the eye and nose as well.

Moisture analysers are highly sensitive devices that can measure the humidity content of an item in order to allow operators at factories determine if any adjustment needs to be made. In general, factories rely on more than one humidity sensor depending on how complex their manufacturing process is. In each step, a sample is taken and weighed. Then it is introduced in the moisture analyser where it is dried up to determine its moisture content. Then the sample is weighed again and checked against the industry standards.




Eduard by Processsensors





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2012年7月11日 星期三

Upgrading Your DC Electric Power Rectifiers Control


TM Drive-DC FCR Product Guide

Increase your DC power rectifier system's life, and obtain a higher performance, friendly diagnostic tools and wide LAN communication options using digital control at low cost.>

Digital Controls

The FCR (Firing Circuit Replacement) is a TMEIC GE microprocessor-based process controller with dedicated I/O system, designed to be the controller of medium to large complexity SCR (Thyristor) bridges where the need for advanced control requirements, high speed response, expanded diagnostic capability and various interfaces are beyond the capability of conventional analog control.

Firing Commands, Fast As Light

The fiber optic technology is a great advantage of the FCR, where the gating commands do not have any lag on the sequence and response. Using Electric-Light conversion technology with FOT (Fiber Optic Transmission Board), the firings are sent to a Light-Electric inversion board.

The firing pulses are sent to the Light-Electric transmission board, which allows the FCR to control multiple bridge converters in 6 and 12 pulse configuration using 1 CPU and up to 24 pulse configuration using 2 CPU's.

Each fiber optic firing board has its healthy signals in benefit of maintenance and diagnose. Fiber optic is also immune to electromagnetic interference, a very important feature while working in high current applications.

Diagnostic Tools

The GE Control System Toolbox is a WindowsR-based operator interface program used to configure, tune, and monitor FCRis. Its user-friendly interface by using diagrams to view signal flow, sequencing, and regulator control in the FCR, which helps the operator in all levels of setup and operation with password security levels for protecting the configuration.

Regulation and sequencing is driven by a set of parameters which can be edited/monitored using any of three operator-selected methods:


Functionally organized menus block diagrams that detail the regulators and sequencing function.
Wizards that guide the user through a complete drive configuration and tune-ups.
The drive control window which allows the user to control the system from the toolbox, having the look and feel of the drive diagnostic Interface.

Trend Recorder

The trend recorder monitors and graphs signal values from toolbox and graphs data collection analysis (.dca) files. Data can also be saved and exported for other applications, such as spreadsheets like Microsoft Excel.

This application is configured using drag-and-drop to move a variable from the block diagram view to the trend recorder window which has an intuitive VCR-style interface for data record and playback. Live data can be sampled and viewed as fast as 20 ms.

It uses three methods to collect data:

Real Time

Mode is for low-to-medium-data collection rates, typically used for live monitoring.

Capture Buffer

Using the trace back data feature which trends several preset variables at high speed, during fault events and save them on non volatile memory for its post-analysis.

Data Historian

mode for historical data contained *.Dca files. a given trend can display one or multiple data historian files using an innovation series controller, and a personal computer (pc). The program runs in the background as a service on the pc that is running the windows nt operating

system and records the values of any egd or srtp signal on any ethernet connected to the pc on which the program is running.

Trace Back Data

If you experience a fault on FCR equipment, Toolbox allows you to view Fault History and Traceback Data. This feature is capable to collect up to 8 events, and several selected variables at speeds up to 244 us storing the event on non volatile memory, remaining even while powering down the equipment. It also eliminates the need of using an oscilloscope during the failure solution, because it is able to display the information of these variables in a trend recorder window.

Remote Diagnostic Support

AMI GE offers the remote support option, where the distance monitoring is possible using either an internet connection, or telephone links to control the installed equipments through the maintenance pc and customers network. This feature reduces the time of diagnose and usually the equipments are put back in service faster.

Adaptability

FCR is 100% compatible with the Canadian General Electric Indoor DC rectifier, and matches with several DC power bridges where AMI GE offers different options of replacement depending on the application and customer needs. The FCR is provided with fast connectors (same as existing) to reduce transition time between existing and new system. Control/fiber optic transmission/fiber optic reception/ gating commands conditioning (partial or complete replacement of gate drive panel).

Instrumentation Interface

Standar Display


The digital display alternates between speed,current, and fault code in the event of an error
RJ-45 ethernet port for local/remote toolbox connection
Ready, run, and alarm/fault LED's
Interlock button disables drive

Optional Graphic Keypad


Four configurable variable bar graphs with descriptive legends
Status icons reflecting health of drive at a glance
Dedicated drive control keys for manual operation of the drive
Full access to all parameters and variables

Configuration


RJ-45 Ethernet interface
10 Mbps maximum
Drive navigator option of TOSLINE-S20 to Ethernet connection using V-Series controller as gateway
Toolbox option of ISBus to Ethernet using Innovation Series R Controller as gateway.

Meter Outputs


Armature and field current, ± 10V
Quantity 5 configurable,± 10 V
8-bits resolution

I/O Interface

Digital Inputs


Opto-coupled 20 mA
Quantity 6 configurable mapping

Digital Inputs


Opto-coupled 10 mA
Quantity 1 configurable mapping
Quantity 1 dedicated mapping

Digital Outputs


Open collector 70 mA
Quantity 6 user defined

Analog Outputs


Quantity 2±10 V or 4-20mA
Differential 8, inputs impedance
12-bits resolution

External Analog Outputs


Quantity 3±10 V, 10mA max
User defined
8-bits resolution

Environmental

Operating Temperature


0 to 40° C (32 to 104°F) at rated load at converter inlet.
-20 to 50°C (-4 to 122°F) with derating.

Altitude


0 to 3500m (1148ft.) above sea level
Derate 2% per 200m above 1000m altitude.

Storage Temp.


-25 to 55°C (-13 To 131°F.

Humidity


5 to 95% relative humidity, non-condensing

Installation Support

AMI GE used to provide all the necessary information to properly install the supplied equipment. This information includes, single-line diagrams, hardware prints, installation manuals, installation best practices and necessary environmental conditions to ensure trouble free operation for many years to come.

Besides, AMI GE offers different options of projects, including:


Power bridge audits. As an option, the cells verification is recommended to ensure the reliability and good conditions of the rectifier.
Snubbers and fuses status verification. The protection devices revision is an additionalservice to help preventing from future malfunctioning on the cells.
Complete start up and commissioning service with "turnkey" option*

*Terms and Conditions should be discussed in agreement.

FCR Upgrade for Electric Power Circuit

The rectifiers supplied before the 80's use old-fashion analog technology, which used to be reliable, but nowadays productivity and quality requirements on manufacturing processes require an urgent upgrade, to keep being competitive on the market

Upgrade could become expensive regarding equipment, and installation requirements, but the replacement can be selective, reusing the existing power rectifiers and devices in good conditions which most of the time, represents the biggest part of the investment cost.

Motors generally can also be reused, unless the new control scheme requires higher torque or speed.

The FCR is an AMI GE product, offered to solve the needs of upgrade, which otherwise, would represent a huge and sometimes, not really needed big investment. The FCR is designed to substitute analog gating control of SCR is with new digital circuitry, obtaining with it, ultimate generation diagnostic tools.

Depending on the system, the FCR can be complemented with a master control for processes, Interlocks and additional I/O either with a PLC or ISC (Innovation Series Controller) and user friendly HMI or COI (Control Operator Interface) screens.

Applications

Electric Arc Furnace (EAF)

An Electric Arc Furnace (EAF) is a furnace that heats charged material by means of an electric arc. EAF range in size from small units of approximately one ton capacity up to about 400 ton units. Electric arc furnace differs from induction furnaces in that the charge material is directly exposed to the electric arc, and the current in the furnace terminals passes through the charged material.

For steelmaking, direct current (DC) arc furnaces are used, with a single electrode in the roof and the current return through a conductive bottom lining or conductive pins in the base. The advantage of DC is lower electrode consumption per ton of steel produced, since only one electrode is used, as well as less electrical harmonics and other similar problems.

Ship Propulsion

DC Machines are still used nowadays on ship propulsion, where usually 3 or more diesel generators, are used to supply medium voltage power to Isolation transformers, which feed 12 pulses non-regenerative SCR power bridges.

Roller or Break Down Mill

A Rolling Mill is a machine or factory for shaping metal by passing it between a pair of work rolls. Rolling mills are often incorporated into integrated steelworks, but also exist as separate plants and can be used for other metals, and other materials. Depending on the temperature of the metal being rolled, rolling mills are typically hot or cold rolling mills.




For more information go to: http://www.firingcircuitreplacement.com
AMI GE International
Blvd. Diaz Ordaz #402
Col. Rincon de Santa Maria
Monterrey, N.L., Mexico
P. + 52 (81) 1001-4050
F. + 52 (81) 1001-4051

AMI GE Argentina
Blvd. Alvarez #150
San Nicolas,
Buenos Aires, Argentina
+54 (93) 461-665-222
AMI GE Brasil
Av. das Nacones Unidas,
8501-2 andar,
Sao Paulo, Brazil
+55 (11) 461-665-222





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2012年6月5日 星期二

The Impact Of Moisture Analysers In Quality Control


For those individuals that are not acquainted with industrial processes and the importance of ensuring that the final product keeps up with the ever increasing and changing quality controls that have to be enforced, it may be quite interesting to learn that moisture analysers play an important role in most industries.

Before the tin of paint reaches the shelves of the warehouse, before the dog food bags is delivered to vet's and pet shops, before you can enjoy a package of potato chips or sip a delicious cup of Jamaican coffee or before the pharmacist is able to sell you that pain killer, the different manufacturers involved had to make a thorough control of the manufacturing process of the different products in order to be sure that the medicine, the coffee, the potato chips and the paint meets the quality standards set up by each and every industry. And in that control, moisture analysers are essential.

Some chemical components present in certain medicines are highly sensitive to excessive humidity and this is why labs and pharmaceutical facilities need to rely on humidity sensors in order to determine if the environment is too wet. If it is, then adjustments have to be made in order to prevent humidity from reducing or altering the healing properties of the chemical compounds.

Something similar occurs with the paint industry. In order to be able to provide great coverage, it is very important for the components used to make paint to be in a moisture balanced environment. If the environment is too wet or too dry, then paint may not adhere properly on to walls or the tints used may not deliver the desired color.


Food industry, both for humans and for pets, is also an important user of moisture analysers. They help manufacturers determine the most appropriate humidity level for the food product they are producing in order to ensure that they taste yummy and that they look and feel attractive to the eye and nose as well.

Moisture analysers are highly sensitive devices that can measure the humidity content of an item in order to allow operators at factories determine if any adjustment needs to be made. In general, factories rely on more than one humidity sensor depending on how complex their manufacturing process is. In each step, a sample is taken and weighed. Then it is introduced in the moisture analyser where it is dried up to determine its moisture content. Then the sample is weighed again and checked against the industry standards.




Eduard by Processsensors





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2012年5月7日 星期一

How to Effectively Control Forest Fires


Forest fires are the "scariest things" in California, the "most extensive" single occurring environmental problem in Europe, a "major concern" in Africa and the "most devastating" phenomena in Australia.

It is the burning of surface vegetation in the wild which starts from uncontrolled heat sources and often spread to human imprints. It is recorded in literature that most of the forest fires experienced in the world today have been caused by humans. The only true natural source of heat for these fires, which is lightning, accounts for only very few cases.

It is almost impossible to prevent forest fires or wild fires, if you like, since they occur yearly across the globe. Suppose the human causes are prevented with a high degree of success, what do we do about the natural cause, lightning?

Several prevention laws, policies, strategies and actions have been implemented by various responsible authorities across the globe but with a mean "level 3" success rate across the globe (supposing we create an imaginary success meter calibrated from level 1-10).

Fires can only thrive in the presence of three conditions which are oxygen, heat and combustible material (fuel). Hence the fire triangle described by many. However, starting a fire does not ensure it's sustainability given rise to a new fire triangle with four faces (fire tetrahedron). The fourth condition which ensures a fire remains sustainable is the "sustainable chain reaction." The earlier three mentioned conditions must continue to be present to sustain a chain reaction that would ensure the fires continuity.

Forest fires have intrigued me for some time now. I have also nursed the theory that since trees have so many adaptative and survival strategies, that there just might be some trees which when threatened, release combustible gases such as a oxygen gases in high amounts. Another theory is the production of alkane gases in high amounts from the decaying vegetative matter covering a forest floor. Imagine a lot of trees in forest giving out high amounts of oxygen during respiration or a forest saturated with alkane gases such as methane and lightning strikes that forest. It is possible you'll have some kind of explosion. Maybe vegetation experts would want to do more in that area. After all, the fires in California (USA) have been described to "move very fast and spreads quickly." Reminds me of premium spirit or gas fires.

Fire prevention measures are supposed to be far more effective and economical in the long term than control measures. But prevention measures have most often failed us especially when implemented in a human population. In a Job Hazard Analysis for example, control and recovery measures are also recommended for incidents to reduce their effects after occurrence. This is already the practice in planning for forest fires.

However, since forest resources are now becoming an issue for conservation experts, fires which destroy them have become an unacceptable environmental problem. Trees as we know are very important resources and they are our most effective weapons against the rising CO2 levels globally. It's recorded in literature that global CO2 levels drop when it is spring and wet season in most part of the world due to the high rate of its utilisation by vegetation. It again rises during autumn, winter and dry season its utilisation by vegetation is low.

One way of ensuring a minimal effect of fires on forest resources is to customize the existing forest resources globally. It is a huge task for governments but would have a "level 7" success rate if you remember our imaginary meter from earlier on.

Now here is what to do:

1. Have a GIS team map out your entire forest resources

2. Create a baseline data bank for the following environmental components around the forests to be updated periodically to monitor changes:

o Climate (Thunderstorms, Lightning intensity, precipitation amounts etc)

o Air Quality (Wind speed, wind direction, atmospheric gases, humidity etc)

o Vegetation (Species composition, occurrence, tissue analysis, etc)

o Groundwater ( Aquifers, direction of flow, water table, etc)

o Wild life ( Species composition, occurrence and interaction, etc)

o Surface water (Physical and chemical characteristics)

o Seismic activities

o Relief

o Human activities in the area (social, cultural, and economic activities)

3. Use GIS mapping capabilities to show the interaction between the baseline data acquired and the forested areas (What to look for- high risk areas most likely to generate and sustain fires). Having identified the areas most likely to generate and sustain fires, it now important to plan for effective control measures. (Keeping in mind that prevention has a level 3 success rate).

4. All the areas marked as fire high risk areas form the GIS manipulations must be isolated. Have a team of surveyors measure boundaries of reasonable width and length around those areas

5. The boundaries between the high risk areas and the surrounding forests should be cleared of all vegetation. These boundaries must have widths enough to either prevent the spread of fire completely or delay its spread for a reasonable amount of time.

6. Automatic sprinklers that can dispatch reasonable volumes of water quickly in all directions should be located within the high risk areas and the boundaries created. Boreholes can be established if aquifers exist or surface water bodies can be used. Alternatively, in the absence of the two sources, water can be directed to the area through underground pipes.

7. The established sprinklers must be:

o automated

o evenly distributed throughout the high risk areas including boundaries and

o attached with smoke detectors and an alarm system

Now here is how it works. If at all a fire starts in one of the high risk areas, it might not be detected immediately depending on the expanse of the area and distribution of the sprinklers. But once the smoke hits one of the fire detectors, the sprinklers all turn on automatically throughout the area and the alarm is triggered at the monitoring station. Remember the boundaries created? There are sprinklers there too which when turned on would also spray water partly into the surrounding low risk areas. All these control measure will surely partner favourably with preventive strategies to limit the effects of forest fires on our already depleting forest resources. If you think they are expensive try handling one forest fire. I hope the "rich developed nations" which experiences this environmental problem annually adopts this or try something similar and assist poorer nation achieve same. It simply works...!




MR. ABAH ROLAND is an environmentalist working in the Niger Delta area of Nigeria with an interest on the effects of global warming and sea level rise in Nigeria.





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2012年2月6日 星期一

Wireless Electricity Monitoring and Control System With Monitoring Function of a Home Solar Plant


A home electricity energy monitor is an easy way to see how much electricity you're consuming - as you use it - and what it costs. It provides prompt, convenient feedback on electrical energy consumption. Some devices may also display cost of energy used, and estimates of greenhouse CO2 emissions in real time. It is also known as a "real time display". People who adopt home energy monitors tend to find that their energy usage drops by between 5 percent and 15 percent in the first year of using them. Various studies have shown such a reduction in home energy consumption.

A wireless smart electricity monitor is a device used to monitor electricity consumption, adopting the wireless technology. In a typical wireless electricity monitor configuration, a unit that measures energy output is connected to the electricity meter in a home meter box, and that unit transmits information about energy consumption wirelessly to a display unit. The display unit shows the amount of power being used, the cost of the power and the greenhouse gas emissions caused by the electricity being consumed. Some units also display other information such as ambient temperature and humidity.

Wireless electricity monitors are easier to use than wired electricity monitors because they allow users to place the display unit anywhere in their homes. This way, users can frequently check the amount of energy being used without having to walk to a meter or run wires through their homes. Wireless electricity monitors are usually battery-operated, though some units have direct current (DC) adapters that enable them to be plugged into wall power.

Most people who use a wireless electricity monitor do so to reduce energy consumption. Having a constant visual reminder of how much energy is being used at any given time, how much the energy costs and how much of an effect the energy use has on the environment can help people stay mindful of their energy use and remind them to turn off appliances when they aren't using them. The monitors can also be used to figure out how much energy particular machines and appliances are consuming so users can determine how they can best reduce their energy use.

Sometimes, a wireless electricity monitor only shows how much energy is currently being used, but many wireless electricity monitors also store usage data and enable users to review their daily, weekly and monthly energy use. This tracking ability can help users review how they're using electricity, stay motivated to continue using less electricity and develop strategies for reducing consumption. A wireless electricity monitor is not very expensive, and many users say they recoup the cost of the monitor in just a month or two by using less energy.

Some wireless electricity monitors also have the ability to connect to a personal computer. The transmitter unit can stream energy usage data to a device connected to the computer, usually through a universal serial bus (USB) port. Computer software that comes with the data receiver typically enables detailed electricity tracking and reporting.

More and more homeowners in the world have installed solar power system or wind micro generator in their homes to generate clean power, reduce the electricity consumption cost and protect the environment as well. Photovoltaic Solar Power is, in it's simplest definition, the energy created by converting solar energy into electricity using photovoltaic solar cells. Solar power cells are made out of materials known as semiconductors, usually silicon. A semiconductor has the properties of an insulator, but when exposed to light or heat is capable of conducting electricity.

The electricity energy monitoring and control system with home solar plant monitoring function works 2-way and is developed specially for households installed with home solar plant, providing a good solution for the home owners to monitor both the home electricity consumed in total and the energy produced by solar. Meanwhile, the system displays the balance between the consumption and production to the family members and provide wireless remote control of home electrical appliances when the family members want to respond to unsatisfactory balance data.

How the system works?

The clamp of one power transmitter is attached to the cable from your electricity meter. The current is then measured and transmitted wirelessly to a monitor with display screen that you can keep anywhere in your house. The clamp of the other power transmitter is attached to the cable from the solar power plant to measure its yield. In this case, the data for the consumption and solar production is attained respectively and the comparison is possible.

When the home electricity consumption is higher than the electricity production of home solar system or wind micro generator, the controller of the electricity control system provides an alarm warning, reminding the family members to act to reduce the power consumption.

The LCD screen of the controller display home power consumption data, production output by home solar system, balance data, cost data, history data. It also shows time and date.

The system supports up to 12pcs sensor plug sockets, that means it can wirelessly monitor and control up to twelve connected electrical appliances.

With this system, you can keep track of how your solar system is performing, how much money you are saving in electricity costs, and how much your system is benefiting the environment.

The wireless electricity monitoring and control system with Home Solar Plant monitoring function is consisted by 1pc controller with power adapter, 2pcs transmitters with sensor clamp, A number of sensor plug sockets and 1pc RJ45-USB data cable to provide computer link

* The controller receives data from the transmitters and sensor plug sockets, displays the real time and history information on its LCD screen and sends powering on/off instruction to the sensor plug sockets.

* 1pc of transmitter will be used to monitor the electricity output of the solar home plant, the other transmitter will be used to monitor the electricity consumption of the whole home.

* The sensor plug sockets detect the electricity consumption of connected electrical appliances. The sockets detect the energy consumption data and send it to the controller. The sockets can be controlled remotely and wirelessly by the controller to switch on/off the connected electrical appliances. One system can support up to 12pcs sensor sockets.

* The RJ45-USB data cable (available with software) serves to provide connection between the controller and the computer so that the user can view the real time data, the history data from the computer or remotely switch on/off electrical appliances.

We recommend you to view Sailwider's home solar monitoring system for more details.




Shenzhen Sailwider Electronics Co, Ltd is a high-tech company located in Shenzhen, China. Sailwider focus on latest technologies and develop practical and competitive products for the fields of electricity energy monitoring and control, automobile accessories, wireless communication, and electronics design and manufacturing.





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2011年12月3日 星期六

The Impact Of Moisture Analysers In Quality Control


For those individuals that are not acquainted with industrial processes and the importance of ensuring that the final product keeps up with the ever increasing and changing quality controls that have to be enforced, it may be quite interesting to learn that moisture analysers play an important role in most industries.

Before the tin of paint reaches the shelves of the warehouse, before the dog food bags is delivered to vet's and pet shops, before you can enjoy a package of potato chips or sip a delicious cup of Jamaican coffee or before the pharmacist is able to sell you that pain killer, the different manufacturers involved had to make a thorough control of the manufacturing process of the different products in order to be sure that the medicine, the coffee, the potato chips and the paint meets the quality standards set up by each and every industry. And in that control, moisture analysers are essential.

Some chemical components present in certain medicines are highly sensitive to excessive humidity and this is why labs and pharmaceutical facilities need to rely on humidity sensors in order to determine if the environment is too wet. If it is, then adjustments have to be made in order to prevent humidity from reducing or altering the healing properties of the chemical compounds.

Something similar occurs with the paint industry. In order to be able to provide great coverage, it is very important for the components used to make paint to be in a moisture balanced environment. If the environment is too wet or too dry, then paint may not adhere properly on to walls or the tints used may not deliver the desired color.


Food industry, both for humans and for pets, is also an important user of moisture analysers. They help manufacturers determine the most appropriate humidity level for the food product they are producing in order to ensure that they taste yummy and that they look and feel attractive to the eye and nose as well.

Moisture analysers are highly sensitive devices that can measure the humidity content of an item in order to allow operators at factories determine if any adjustment needs to be made. In general, factories rely on more than one humidity sensor depending on how complex their manufacturing process is. In each step, a sample is taken and weighed. Then it is introduced in the moisture analyser where it is dried up to determine its moisture content. Then the sample is weighed again and checked against the industry standards.




Eduard by Processsensors





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