Friday, November 20, 2009

Zigbee

First Zigbee RF4CE certified solution including ultra low power and affordable bill of material

GreenPeak Technologies has announced the successful completion of ZigBee RF4CE certification.

ZigBee RF4CE (Radio Frequency for Consumer Electronics) is the standard communication protocol for radio frequency-based remote controls for audio/video consumer electronics. The ZigBee RF4CE specification is based on IEEE 802.15.4 MAC/PHY radio technology in the wireless 2.4GHz unlicensed frequency band and enables worldwide operation, low power consumption and instantaneous response time. It allows omni-directional and reliable two-way communication, frequency agility for enhanced co-existence with other 2.4GHz wireless communication systems (like Bluetooth and Wi-Fi) and provides specifications for robust data transmission, discovery, easy and intuitive pairing and security.

In comparison to traditional IR (infrared) remote controls, RF remotes are faster, more reliable and provide a greater range. RF also removes the line-of-sight barrier of today’s IR remotes. The additional benefits of ZigBee RF4CE include richer communication, increased reliability and interoperability between vendors.

GreenPeak is one of the first ZigBee members to obtain RF4CE certification. Frans Frielink, VP Business Development for GreenPeak says: “We have successfully implemented the ZigBee RF4CE specification, but we take the standard even further by adding ultra low power and low cost to our solution. This green solution enables remote controls to run on a single coin cell battery without ever having to change or recharge it, so they essentially become maintenance free. In combination with a single layer low cost PCB, the total bill of material will be less than two dollars per remote!”


GreenPeak is a member of the ZigBee Alliance and is committed to the RF remote control market with dedicated reference design software stacks and a dedicated ZigBee RF4CE specialist team supporting customers. The GreenPeak reference designs will be delivered with a very small ZigBee RF4CE protocol stack which fits very well within small and low cost processors. The embedded IEEE 802.15.4 MAC layer allows a short time to market and a simple, stable and reliable software application. Additionally, the reference designs are based on a single layer low cost PCB with integrated antennas and a very low component count, guaranteeing a very low cost BOM.
FEATURES
• Two wire, 24vdc, loop powered transmitter for level, volume or interface measurement.
• Dry validation system allows the user to validate calibration on a purpose built test fixture in a workshop environment, without the need to fill and empty the vessel or remove the probe. This approach to validation offers our customers significant labour and material cost savings and process downtime when compared to traditional methods.
• Multiple bending allows the rod to be profiled to any vessel shape.
• Reliable and repeatable measurement is possible from the process connection right down to the probe tip allowing measurement from the first to the last drop and virtually eliminating the dead volume that cannot be measured.
• Simple loop tuning via PACTwareTM allows reliable and repeatable measurement even when vessel obstructions, such as, agitator blades and spray balls are within 6mm of the probe.
• Unaffected by changing process conditions such as vapour layers, foaming, surface agitation, bubbling or boiling, high fill and empty rates, varying dielectric and density changes that badly affect other technologies.
• Full ATEX hazardous area certification.
Liquid level measurement solutions
for the life science and food and beverage industries


Magnetrol International have added of a range of liquid level instruments that are dedicated to servicing the needs of the Life science and Food & Beverage industries. This group of products further expands our extensive portfolio of high quality liquid level and flow products and allows us to further develop our successful entry into hygienic industries across Europe, the Middle East and Africa.

The hygienic family of products have been designed and developed to the same exacting standards, for which all Magnetrol products are renowned worldwide and this group of products includes the industry leading Eclipse 705 Guided Wave Radar level transmitter, Echotel 960 series Ultrasonic liquid level switches and Thermatel TD/TG series Thermal Dispersion flow and level switches.

All their hygienic products have been specifically designed to provide continuous reliability and repeatability, for even the most demanding of applications, and all hygienic products carry both 3A and EHEDG approval for use in applications that require the most stringent levels of cleanliness and they are ideally suited to both CIP and SIP cleaning regimes.

At the heart of the company's hygienic product family is the internationally acclaimed Eclipse 705 Guided Wave Radar. With over 6000 successful installations in hygienic applications around the world, the Eclipse has proven to be the level measurement instrument of choice for many globally recognised companies in the Food & Beverage, Biopharmaceutical and Pharmaceutical industries and with features, such as those shown in the box it is easy to see why.

Inclinometerss

Precision solid state inclinometers accurate to ±1 milli-radian

Sherborne Sensors has announced the launch of the T700 series, a high-precision range of compact, DC-operated solid state MEMS inclinometers. The T700 series is designed to measure inclination proportional to sine of angle in one axis (model T710), or dual axes at right angles (model T720), in applications where space is at a premium.

Available in ranges from ±30° to ±90°, the Sherborne Sensors T700 series features an advanced micro-machined MEMS sensor, incorporating air damping. Unlike fluid-damped devices, air damping is essentially independent of temperature, which enables the inclinometer to reliably perform over a very wide temperature range. Units are housed in a lightweight, robust light alloy package and are fully compensated for temperature effects on both sensitivity and zero. The T700 series also incorporates positive mechanical stops, conferring excellent shock resistance and offering reliable over-ranging protection. DC response capabilities of the Sherborne Sensors T700 series facilitate exceptional measurement accuracy. Units are designed to operate from an unregulated DC power source, and offer a self-test feature on both axes.

Sherborne Sensors T700 series inclinometers are supplied with an integral shielded cable with built-in strain relief, attached to the inclinometer housing, which may also be fitted with an optional electrical connector. The T700 series -0101 model variant incorporates a temperature sensor, which enables each unit to be individually characterized over its operational temperature range. A supplied characteristic error correction equation helps further minimize measurement uncertainties due to zero offset, sensitivity error and linearity, thermal zero shift and thermal sensitivity shift. By entering equation coefficients into the host operating software, cost-effective, high-precision inclination measurements, with accuracies better than ±1milli radian, may be achieved. The T700 series is also supplied with a comprehensive two-year warranty.

T700 series inclinometers are ideally suited for a variety of applications, including road bed analysis, platform and machinery leveling, satellite antenna positioning, civil engineering analysis, and geophysical and seismic studies.

Shockproof

Rugged transducers offer 20,000g shock survivability and minimum 2X burst pressure

Endevco Corporation has announced the debut of the 8511A series, a family of high sensitivity, rugged piezoresistive gauge pressure transducers, expressly designed for maximum reliability in extreme measurement environments.

Available in ranges of 5,000; 10,000; and 20,000 psig, with a 3/8 mounting thread, Endevco® 8511A series pressure sensors feature a four-arm piezoresistive strain gage bridge, diffused into a sculpted silicon diaphragm, for maximum sensitivity and wideband frequency response. The transducers also feature self-contained full hybrid temperature compensation, providing stable performance over a wide temperature range of 0°F to +200°F (-18°C to +93°C). In addition, these rugged transducers are designed to survive 20,000g shock and minimum 2X burst pressure.

The 8511A series also offers excellent linearity, high shock resistance, and high stability during thermal transients, making them ideal for use in studies of structural loading by shock waves resulting from explosive blasts; hydraulic or combustion system pulsation measurements; and automotive airbag testing. For harsh environments where particle impingement is a concern, an optional protective screen and black silicone grease coating is available. This further reduces photoflash sensitivity and provides an effective thermal barrier for short duration high temperature service.

Recommended accessories for use with the Endevco® 8511A series include model 136 three-channel system, model 4430A signal conditioner, or model 4990A (Oasis), as signal conditioner and power supply.

Air quality

Need for high air quality to drive oil-free compressors market
By Katarzyna Owczarczyk, Research Analyst, Industrial Automation & Process Control, Frost & Sullivan
Katarzyna Owczarczyk is a Research Analyst with the Frost & Sullivan European Industrial Automation and Process Control Practice. She focuses on monitoring and analyzing emerging trends, technologies and market behavior in the Industrial Automation and Process Control industry in Europe.

Compressed air has become vital for day-to-day operations in most industries. Currently, the most commonly used compressors are oil-injected rotary screw. As the name suggests, it requires oil to operate. However, contamination of the oil by even the smallest quantities in purity-critical compressed-air applications can result in damaged products or product batches, high rejection rates and returns and costly production downtime and cleanup. In order to overcome these issues, end users are increasingly turning towards oil-free compressors.

Frost & Sullivan is of the view that the European oil-free compressors market is likely to witness tremendous growth in future. The market registered revenues of $540.0 million in 2008, and is estimated to reach $668.0 million in 2015.

Chart 1 provides the revenue comparison of oil-free compressors and industrial compressors for the European oil-free compressors market in 2008.

Chart 1
Oil-free Compressors Market: Revenue Comparison of Oil-free Compressors and Industrial Compressors (Europe), 2008Source: Frost & Sullivan

Benefits of Using Oil-free Compressors
Special thrust is given to oil-free compressors, as unlike oil-injected or technical oil-free that emit some levels of contaminated air, oil-free compressors deliver 100% oil-free air. Thus, there is no risk of oil-contaminated compressed air.

Besides, the running costs of oil-injected compressors are higher than oil-free compressors. Oil-injected compressors require regular oil filling and frequent filter changes to prevent air contamination and serious shutdown conditions. Moreover, cost is involved in consuming oil and the disposal of oil residue is an additional cost. These costs, although not apparent at the time of purchase, are very high and contribute substantially to the total cost of ownership. In comparison, the maintenance costs of oil-free compressors are very low. Oil-free compressors eliminate the need to periodically check the oil level, the need to refill oil and the need to change oil and cartridges. Consequently, the need to treat the exhausts is also nil. Moreover, oil-free compressors tend to be more energy efficient, cutting down energy costs even up to 30.0 per cent. As energy forms 70.0 per cent of the total life cycle cost of a compressor, the savings can be substantial.

Finally, oil-free compressors solve the existing problems of pollution and oil waste management caused by lubricated types of compressors. By using oil-free compressors, there is no risk to the environment due to pollution by oil leakages, there is no need to dispose exhaust oil and filter cartridges and there is no risk of desiccant contamination due to the presence of oil. In result, oil-free compressors enable compressed air users to operate with maximum environmental efficiency.

Growing Need for the Highest Air Quality
Avoiding even the slightest oil contamination is a very critical need among various end users. This is more so in critical applications, where air comes into contact with the process, such as food and beverage processing, pharmaceutical manufacturing and packaging, chemical and petrochemical processing, semiconductor and electronics manufacturing, the medical sector, automotive paint spraying and textile manufacturing.

The performance of air compressors has a direct impact on product quality and production costs and end users in all these critical applications cannot afford for any shortcomings otherwise, they stand to lose market position and reputation. Consequently, much more end users, be it big, small or medium-sized, are investing in oil-free air compressors, which guarantee premium air quality, eliminating any concerns of product safety.

Food and beverage, life sciences and others, including automotive, chemicals, oil and gas, pulp and paper and other niche applications, held the largest share in the European oil-free compressors market in 2008. Shares of these end users are expected to rise from 2008 to 2015, except others which have been affected by the economic recession. The power generation industry is also expected to grow during the forecast period. However, due to the impact of the economic recession, the electronics industry is expected to be severely affected until 2010. The textile market is expected to decline in terms of revenue share, because of the growing trend of moving textile production to low-cost labour countries in the Middle East and Asia.

Conclusion
The European oil-free compressors market is expected to grow steadily from 2010 onwards, driven by the demand from food and beverage, life science and electronics industries, where high air quality is very important. Most of these critical applications have already implemented oil-free compressors on taking into account the benefits of using such compressors. Moreover, given the current economic situation, it is not profitable to use unreliable and costly lubricated compressors in most of these applications. In future, other applications are expected to follow suit. The European oil-free compressors market is estimated to generate $668.0 million by 2015, growing at a compound annual growth rate (CAGR) of 3.0–4.0 per cent from 2008 to 2015.

Thursday, November 19, 2009

Tuning loops

Tune 50 control loops per day

With ExperTune's PlantTriage software, an engineer or technician can now tune over 50 control loops a day. PlantTriage identifies loops to be tuned and gives the best PID values. Before-and-after simulations quickly confirm the settings. The browser-based tools accelerate tuning time to mere minutes.

  • See How to Tune a Loop in 60 Seconds

    PlantTriage is control loop performance monitoring software. It monitors the performance of all plant control loops and instruments in real-time, providing prioritized, focused advice. Prioritized tuning recommendations are shown in a standard web browser or via automated email. From here, users can perform simulations, fine-tune the controller, select robustness, and generate loop documentation. Live links to detailed dashboards can be used to inspect all aspects of control loop performance. Only Microsoft Internet Explorer software is required on the client computer.

    George Buckbee, Vice President of Product Development at ExperTune says: "I've been tuning control loops myself for over 20 years. Loop tuning has always been a time-consuming process, with a lot of waiting. This new approach takes all the waiting out of the process. Now, engineers and technicians can confidently tune dozens of control loops a single day."

    The new features link directly to PlantTriage's Active Model Capture Technology, or AMCT. AMCT scans the plant 24 hours a day, looking for operator setpoint changes or output changes. From this normal operating data, the software models the process, finds new tuning, and shows the improvement. The PlantTriage server maintains a history of these process models, and tuning values, as well as other control performance metrics.

    John Gerry, President of ExperTune says "ExperTune's expertise has been recognized through multiple industry awards. We pride ourselves on putting this expertise into easy-to-use tools. The new browser-based tools make our knowledge and experience even more accessible and easy to use."


    Browser-based tuning tools are available as a standard feature in PlantTriage version 9, which starts shipping this year.
  • An eight channel oven temperature profiler


    MadgeTech has just released the OctThermoVault, an eight channel thermocouple based oven temperature profiler.

    The OctThermoVault can be placed directly in an oven to provide a complete temperature profile of the entire process.

    With up to eight channels, both product and environmental temperatures can be captured. Each thermocouple has its own cold junction compensation reference point, providing increased accuracy and response time.

    The OctThermoVault can withstand temperatures up to 350ºC (662ºF) for 25 minutes and has programmable reading rates as fast as 4Hz. Each channel can store up to 500,000 readings. Channels can be enabled or disabled to maximize memory capacity. For identification, each channel can be named with a ten character title. If a probe is removed or severed during logging, the device detects this change and the software will automatically annotate the data to indicate an open thermocouple.

    The OctThermoVault is ideal for use in oven temperature profiling for the food processing industry and other heat treating applications. Simply start the logger and place it within the monitoring area. Data from all channels is simultaneously logged. After the monitoring cycle is complete data can be downloaded to a PC for further analysis.

    Head of Europe

    Bob Sharp named as president, Emerson Process Management, Europe

    Emerson Process Management has just appointed Robert (Bob) T. Sharp as president, Europe. Sharp will be based at Emerson’s European head office in Baar, Switzerland. He will relocate from Gothenburg, Sweden, where he served as president of Emerson’s Rosemount Level & Marine division.

    I am pleased to announce the appointment of Bob Sharp to this key position,” said Steve Sonnenberg, president of Emerson Process Management. “Bob brings strong leadership skills and a breadth of experience that will be key to meeting the demands of this important and diverse marketplace.”

    Sharp has a wealth of process industry experience. He joined Emerson in 1996 and has held several senior management roles within the process business. These have included global vice president of the Rosemount temperature business, and before that vice president, global marketing within the Rosemount division. Sharp holds a bachelor’s degree in engineering from Michigan Technological University and a master of business administration from Harvard Business School.

    “I am delighted to be taking on this role” said Sharp. “This is a challenging time for the process industries, both because of the global economic conditions as well as the changes at our customer’s sites in terms of workforce demographic shifts and technology trends. I am looking forward to leading the team that will provide technologies and expertise to enable our customers to face these challenges head on.”

    Wireless level

    Emerson adds Rosemount® vibrating fork liquid level switch to Smart Wireless product portfolio
    New WirelessHART™ switch provides access to difficult to reach measurement points in the chemical, power generation and oil and gas industries

    Emerson Process Management has introduced the industry’s first WirelessHART point level switch, which enables level detection to be made in locations previously inaccessible or too costly for wired devices.

    The Rosemount® 2160 vibrating fork liquid level switch combines Emerson’s wireless expertise with the Rosemount vibrating short fork technology. It has all the same features as the wired level switches in the Rosemount 2100 series, but without the complication and cost of wiring.

    Suitable for almost all liquid applications, the 2160 liquid level switch is virtually unaffected by flow, bubbles, turbulence, foam, vibration, solids content, coating, liquid properties and product variations. It is designed for use in extreme temperatures and performs in harsh process conditions that are unsuitable for other switches. Typical applications include overfill protection, high and low level alarms, pump control (limit detection) and pump protection or empty pipe detection.

    The Rosemount 2160 is a component of PlantWeb® digital architecture, wirelessly communicating switch output state, diagnostics, and PlantWeb alerts. The wireless switches operate in the WirelessHART self-organising mesh network which enables the switches to automatically find the best communication path, with greater than 99% data reliability, to the Smart Wireless Gateway.

    “We believe the introduction of wireless technology to process level measurement and detection will add value for the industry’s end users,” said Kevin Cullen, product manager at Emerson’s Mobrey Measurement division. “By combining Emerson’s expertise in wireless with Rosemount’s process level products, we offer process industries a cost-effective means of taking measurements at currently undetected alarm points, helping them to further optimise plant performance and reduce risk.”

    The unique ‘Fast Drip’ fork design of the Rosemount 2160 and other products in the 2100 series means that any remaining liquid is drawn away from the fork tips, enabling quicker and more reliable detection, especially in high density liquids. Two models are available, covering the temperature range -94° to 500°F (-68° to 260°C),

    The wireless point level switch uses an intrinsically safe power module that utilises Emerson’s SmartPower™ technology to provide a long battery life.

    An integral LCD display showing switch output states and diagnostics provides real time, accurate verification of process conditions. The product is suitable for horizontal or vertical installation via a flange or threaded process connection. The omnidirectional aerial and rotatable housing enable the mounting to be adjusted for optimum signal and best viewing of the display.

    The product is easy to install and maintain as there are no moving parts. Any build-up, fork blockage or excessive corrosion is shown immediately by a change in fork sensor frequency, indicating that maintenance may be required.

    Intrinsically safe options are available for hazardous area installations, as the Rosemount 2160 has ATEX (Europe), IECEx (Asia), FM (US) and CSA (Canada) certification. It can also be supplied with a hand-polished wet side suitable for food and beverage applications.

    In addition to the wireless point level switch, Emerson offers a wide range of wireless field instrumentation and plant operations equipment, including Fisher® position monitors, Rosemount transmitters, Rosemount Analytical and Machinery Health™ Management devices and native wireless interfaces to AMS™ Suite predictive maintenance software, DeltaV™ or Ovation® digital automation systems, and wireless SmartStart™ services. Smart Wireless is an extension of Emerson’s PlantWeb digital plant architecture.

    Wednesday, November 18, 2009

    Data loggers

    On-line selection guide

    Finding best-match technology for monitoring temperature, humidity, pressure, or electronic signal events can now use The Dickson Data Logger Selection Guide, an online step-by-step resource guide available from Dickson Company, which offers the widest selection of data loggers and chart recorders for these monitoring purposes.

    Multiple selection factors are provided including instrument displays, remote probe availability, alarm options, wireless/Ethernet/battery-operated or outlet-powered, operating ranges and cost. Users are able to drill down and mix and match various features until they identify the range of instruments that match their specifications.

    Chris Sorensen, Dickson VP Sales and Marketing, comments, “We know that the data logger or chart recorder that is the best fit for one user’s application may not work well for another, and we maintain the world’s widest selection of top-quality instruments to ensure you’ll never have to make do with a less than optimal instrument match to your application.”

    Air temperature

    Rugged, weatherproof, Temperature Sensor

    Omega’s new EWSE air temperature sensors offer the perfect solution for temperature monitoring outdoors or in demanding environments. With an ambient measurement range of -40 to +85 Deg C the sensors have a rugged 6mm diameter sheathed RTD probe housed in the centre of a 14mm outer protection tube which is drilled to improve airflow around the sensor. A four terminal connector block or 4-20mA transmitter is included in a tough aluminium alloy enclosure rated to IP65. A cable gland is fitted with IP68 rating suitable for cables from 2.5 to 6.5mm diameter. In stock and available immediately to buy on-line.

    Indian support

    New materials testing, training and
    customer support centre opened


    Lloyd Instruments has announced that its distributor in India, Hemetek Techno Instruments PVT. Ltd, has opened a new testing, training and customer support centre at its headquarters in Mumbai. This new centre will be used to provide application support to existing and future customers for Lloyd Instruments material testing machines and Chatillon® force measurement products, as well as offering machine and software operator training courses. It will also be used for extensive evaluation of all special grips, fixtures and accessories developed locally for materials testing.

    Viraj Devasthale, Director at Hemetek said: “Customer satisfaction has always been at the forefront of Hemetek’s approach to business, and this new centre provides us with a facility to which we are proud to invite customers and prospective customers. Instrument maintenance, servicing and calibration is an important part of our post-sales support”, he continued. “This new facility will also be used by our calibration division, Hemshell Services, for training internal staff for servicing and customer support”.


    Hemshell Services is accredited to ISO 17025-2005 for site force calibration of universal materials testing machines. Testing and calibration laboratories that comply with ISO 17025 also operate in accordance with ISO 9001. The scope of this accreditation is up to 10T capacity. Calibration certificates are supplied with all the necessary data together with evidence of traceability back to the calibration masters.

    Calibration and certification services are also important for other plastics and polymer evaluation systems and Hemshell also offers temperature calibration and precision die, barrel calibration and certification services for the Davenport range of Melt Flow Indexers. Temperature calibration and certification and LVDT calibration and certification are also offered for PET Intrinsic Viscosity Testers.

    Monday, November 16, 2009

    Plug-in

    New plug-in modules for PSM rails

    Rittal has extended its Power System Module (PSM) range to allow the power consumption of individual servers and peripheral hardware to be measured per socket.

    New plug-in modules for PSM rails record the individual currents for each socket and show the power consumption of the devices connected via three coloured LEDs on the right-hand side. A second LED on the left-hand side of the outgoing slots provides an overview of the overall power of the module. The presentation logic is automatically adjusted to the mounting position to rule out any misinterpretation.

    Colour coding follows the traffic light principle: Green LEDs indicate that other equipment may now be connected safely. Amber indicates increased current on the module and before any other equipment is connected its’ installed load needs to be examined. Red indicates that another consuming device would trigger the overloading of the power supply. Values can also be viewed on a digital display enabling administrators to monitor the power consumption of every piece of equipment immediately.

    In conjunction with the Rittal CMC-TC (Computer Multi Control Top Concept) sensor network, threshold values can be set and individual values, such as consumption data, can be centrally collected.

    The new modules are available with six or eight slots, which can be switched individually via the network. On one PSM rail, up to three modules can be installed in 2,000 mm high racks or two in 1,200 mm enclosures. Mixed assembly with different modules is also possible.

    Programming & Modbus

    Enhanced productivity features make updating programs simpler, and add high accuracy modes and a new Modbus TCP Client/Server functionality

    GE Fanuc Intelligent Platforms has just announced the release of its latest VersaMax® Micro Plus controller firmware revision 4.0. The new release expands the controller’s applicability to an even wider range of applications by integrating some exciting new features and enhances the company's PLC family capability.

    “With this release GE Fanuc has enabled the VersaMax Micro Plus to improve productivity, substantially expand communications connectivity, add high precision temperature sensing and increase the amount of devices that con be controlled with a low end controller,”
    said Bill Black, Controllers Product Manager for GE Fanuc Intelligent Platforms. “The VersaMax Micro is a surprisingly powerful PLC for its size and price, and the new features add more functionality, keeping it at the forefront of its class of controllers.”

    The new OnLine Programming feature enables the user to edit and download logic to the PLC without stopping it. Not requiring a PLC to come off line for changes saves significant downtime and potential expense for lost productivity and scrap. The OnLine programming streamlines debugging during machine commissioning and is ideal for applications that are continuous process.

    The VersaMax Micro Plus has been enhanced to support Ethernet Modbus TCP Client and Server protocol. This powerful communication addition enables the Micro to handle a wide range of applications that historically required a more sophisticated control platform. A simple function block enables the Modbus TCP communications commands to be easily integrated into the users logic. Up to eight Modbus TCP channels are supported with one channel configured for Modbus TCP Client and the remaining are used for Modbus TCP servers.

    “The Modbus TCP connectivity enables the Micro Plus controllers to address many complex applications that require the integration of variable frequency drives, motor control centers, SCADA and other Ethernet devices. In addition, security settings have also been added to minimize hacking into the controller,” he continued.

    The new VersaMax Micro 4.0 firmware release also supports High Accuracy Thermocouple/Millivolt and RTD input Modules. The Thermocouple and RTD expansion units can now support the High Accuracy mode with 16-bit resolution. This provides higher precision in temperature monitoring and strain gauge applications.

    Additionally, there are four new 64-point expansion modules that are compatible with the new Micro Plus controller, so the Micro Plus can support up to 320 I/O points. The high-density expansion modules enable the Micro Plus to be very cost effective for low-end applications.

    Sunday, November 15, 2009

    PSU

    Triple output linear power supply

    Calex has announced the availability of the 3.15.1000 linear power supply. The 3.15.1000 provides a low noise, highly regulated +5 V and ±15 V output for a total of 8 W of output power. The rugged, epoxy potted construction of the 3.15.1000 makes the unit ideal for use in a wide variety of sensitive analogue circuitry applications utilising operational amplifiers, function modules and data conversion circuits.

    The 5 V output of the 3.15.1000 provides up to 1 A and the ±15 V outputs provide up to ±100 mA. The output voltage accuracy is ±1.0%. Line and load regulation is ±0.2%. Noise and ripple is very low at 2 mV RMS. The 3.15.1000 can be powered by 100, 115, 220, 230 and 240 V AC. The model features foldback current limiting short circuit protection so the unit can be shorted indefinitely without damage. The case temperature operating range of the 3.15.1000 is -25ºC to +50ºC. The case size is 89 x 64 x 40 mm and uses an industry standard pin-out making the unit a suitable alternative for replacing problem or obsolete models from other manufacturers.

    The 3.15.1000 is available with two optional mounting kits that provide solder lug or screw terminal connections. The MK215-022 provides solder lug connections and measures 109 x 108 mm. The MK215-08BDV provides screw terminal connections and measures 112 x 93 mm. Units are available from approximately four weeks. Contact us for pricing on the 3.15.1000 as well as the two mounting kits.