Saturday, July 24, 2010

Rugged power meters

EMC immunity testing makes very specific demands on RF power meters. A large dynamic range, fast measurements, rugged design and a frequency range that matches the application are some of the unique requirements for power meters in an EMC test environment.

has introduced The PM 6006 power meter which has been specially designed to meet these demanding requirements.

Two models are available. The PMU 6006 is designed for connection via the USB interface and is supplied with Windows-based control software. In addition to having different graphical display modes available, the software provides averaging, offset use, and the ability to switch units to dBm, dbμV or V. It can also handle simultaneous readouts of multiple power meters. The PMU 6006 is powered by the USB connection.

The second model is the PMR 6006, designed for direct connection to the recently introduced Teseq ITS 6006 Immunity Test System. Up to three power meters can be connected and the power measured can be read by either the ITS 6006 software utility or by optional Test House Software.

Common specifications are frequency range 1 MHz to 6 GHz, linear measurement range -45 to +20 dBm, RMS power using log detector, low voltage detection. Both power meters feature a ruggedly designed metal casing and have LED indication of power on and measurement activity.
Paul Dixon, Managing Director of Teseq Ltd comments;”These new power meters add to our extensive EMC testing capabilities giving our customers the flexibility to make stand alone measurements or buy into one of our comprehensive suites of test systems and software.”

Pulse and arbitrary function generator

TTi (Thurlby Thandar Instruments) has launched a lower-cost version of the best-selling TG5011 function/arbitrary/pulse generator.

The new TG2511 has a maximum frequency of 25 MHz for sine and square waves. It offers similar facilities to the more expensive 50 MHz generator, but with proportionately lower maximum frequencies for pulse and arbitrary waveforms.

The generator comes with Waveform Manager Plus for Windows, enabling complex waveforms to be created using a PC. Commonly used waveforms that are pre-programmed into the software include sin(x)/x, exponential rise and fall, logarithmic rise and fall, Gaussian, Lorentz, haversine and cardiac waveforms.

The TG2511 offers a comprehensive set of digital modulations including AM, FM, PM, PWM and FSK. The modulation source can be any standard or arbitrary waveform, or any external signal applied to the modulation input from DC up to 20 kHz.

A wideband noise generator creates Gaussian white noise with a high crest factor and a bandwidth of 20 MHz. Noise can be added to any waveform or can be used as a modulating source.

Arbitrary waveforms of up to 128k words can be generated at 14 bits vertical resolution and a sampling speed of 125 MS/s. A front-mounted USB port enables external flash memory storage of up to 1000 waveforms.

USB and LAN interfaces are provided as standard, the latter conforming with LXI class C (Lan eXtensions for Instrumentation). A GPIB interface is available as an option. All functions of the generator can be controlled from the digital interfaces, and arbitrary waveform data can be transferred via them.

Solar inverter's shining efficiency

A report jointly issued by the Fraunhofer Institute for Solar Energy Systems (ISE) and Bureau Veritas shows that AEG Power Solutions’ Protect PV.250 solar inverter offers remarkable efficiency. Energy conversion efficiency testing conducted according to European Standard EN 50530 yielded a very high efficiency grade of 98.7%.

Energy conversion efficiency testing was conducted at eight different power levels, nine DC voltage levels and for two module technologies (thin film and crystalline technology, both used in solar farms). MPPT testing, performed by ISE according to the same European EN 50530 standard, yielded a Maximum Power Point (MPP) efficiency grade of 99.99%. ISE also reported that the PV.250 inverter, launched in Sept. 2009, successfully complied with EN 50530 dynamic requirements.

Testing was conducted by Fraunhofer ISE, the largest solar energy research institute in Europe, and by Bureau Veritas, an international group specialized in the inspection, analysis, audit, and certification of products, infrastructure and management systems according to regulatory or voluntary standards. Designed for power plants generating from one to several hundred megawatts, the AEG Power Solutions Protect PV.250 inverter was developed and is manufactured in Warstein-Belecke, Germany.

Orders totalling 40 MW were already booked at the end of the second quarter, mainly for Germany, the Czech Republic and Italy, but also for Belgium and France. Certification for Italian grid operator ENEL has also been achieved. This means PV 250 will soon be included in the ENEL listing, a very promising achievement for AEG
Power Solutions on this market.
One of the first Protect PV.250 installed is part of the equipment of the solar farm of the city of Hungen in Germany. “The performance of the solar park is considerably higher than what the forecast and the efficiency study calculated. We are very satisfied.” Technical Manager Thomas Weichmann comments; "With the PV.250 technology in general, and especially with the infrastructure of the plant in Warstein-Belecke, AEG Power Solutions is very well positioned to fulfil all photovoltaic power plant requirements – today and in the future, in Germany and elsewhere,” said Enrique de la Cruz, VP Solar Strategic Business Unit . With DC voltage capability up to 1000 V, the Protect PV.250 enables customers to achieve optimal power efficiency thanks to its field-programmable gate array (FPGA) control system. Specifically engineered to meet the requirements of utility-grade applications, the Protect PV.250 can be customized to each application thanks to a range of available options and its unique container design.

AEG PS has started developing solar activity and products based on its sound power expertise two years ago. Its sales in solar inverters should be multiplied by 10 this year.

Thursday, July 22, 2010

Communications standard

Profibus available across full range of monitors

Analytical Technology has added 24VDC powered and digital options of the Profibus DP (Decentralised Peripherals) standard across its full range of monitors, including its extensive chlorine range, in response to customer demand. The addition of Profibus DP standard to Analytical Technology’s monitors enables water and wastewater treatment plants to optimise maintenance and achieve a high level of confidence in chlorine measurements.

Profibus is a standard concerning fieldbus communication and was first introduced in 1989. The most commonly used application is Profibus DP, which is employed to operate sensors via a centralised controller in production environments. Profibus DP aims to offer better plant control through improved instrument output. Monitors and instrumentation equipped with Profibus DP offer more information by communicating sensor state and calibration needs, enabling operators to make judgements on the efficacy of measurements.

Demand for Profibus-enabled instrumentation in the water and wastewater industry is increasing. Analytical Technology works closely with customers to anticipate new requirements and as a result the company has added Profibus DP to its range of chlorine monitors, including free and combined chlorine, reagent free, clean water variant and unique non contact gas phase dirty water variant. Analytical Technology’s monitors are now available as 24VDC with relays or 85-260VAC with relays with optional digital communications. The Profibus-enabled monitors share the same sensor and processor, offering customers a common platform approach to measure all forms of residual chlorine in all applications. Installation costs are also reduced as Profibus-enabled monitors can run from one cable.

Dr. Michael Strahand, General Manager Europe at Analytical Technology, comments: “We are pleased to be able to offer our full range of monitors with Profibus DP. We aim to be at the forefront of researching and providing new technology and we look forward to working with our customers to further enhance our monitoring instrumentation.”

Wireless router

Deeter Electronics has introduced a Wireless Router to increase the range and reliability of their recently launched Deeter Wireless Sensor System for industrial measurement and control.

The new Wireless Router may be added to a Deeter Wireless Sensor System to significantly increase the range of the wireless communication between sensors and a Base Station. These Routers may also be used to improve communications reliability.

A basic Deeter Wireless Sensor System is comprised of a Base Station and a remote sensor node, either a general purpose Deeter Sender or self contained Liquid Vertical Continuous Sensor (LVCS-RF) probe. The maximum range between these, in ideal conditions, can exceed 1Km. However in many industrial environments the signal will be attenuated by obstructions and fading may result from multiple signal paths caused by reflections. These effects reduce the quality of the communications link and the achievable range. Adding a Deeter Wireless Router to the system extends the effective range and improves signal quality.

In use the Wireless Router should be positioned midway between the remote probe or sender and Base Station, possibly offset in order to avoid obstructions that might cause interference. Up to four Routers may be used in a single system with data being retransmitted a number of times before reaching the Base Station. This will greatly extend the transmission range and reliability.

The use of multiple Routers allows the wireless network to automatically establish the most effective signal route between probe and Base Station at turn-on. Should this signal path become interrupted for any reason the Router network will re-establish the most efficient and reliable signal path. In this mode the Routers are operating as a self-healing wireless mesh network offering maximum signal reliability.

The Deeter Wireless Router must be permanently powered-up to relay messages. Any message sent from a base station to a “sleeping” battery powered remote node or sensor will wait at the last Router until the sensor wakes up and polls for data.

The Deeter Wireless Sensor system uses the internationally recognised IEEE 802.15.4 protocol in the 2.4GHz ISM radio band allowing users to install approved devices with no licensing requirements. It operates on one of 16 radio frequency channels available allowing several wireless sensor networks to share the same wireless spectrum without interference.

The Deeter Wireless Router is housed in an ABS enclosure with an external antenna. Power is provided by an external 5VDC mains wall mounted adapter connected via cable glands. An optional 3m extension lead and bracket are available for mounting the antenna in a position more favourable to wireless communication should the need arise.

Peter Whiteaker, Managing Director of Deeter Electronics, comments; "Our new Wireless Router is the final piece in our class leading wireless sensor system. Adding one or a number of Routers to a measurement system not only extends the communications range but can greatly improve the reliability of the transmitted data signal. We can now offer our customers a complete, simple to operate, low cost wireless sensor system which provides a very viable alternative to conventional control and instrumentation systems."

The Deeter Group product range includes level sensors, industrial weighing equipment, reed and proximity switches, security switches, termination assemblies, litz and magnetic wire and solar power systems.

Plastic replaces metal!

Foremost Electronics has added the Binder 713 series M12 plastic connector to its extensive range of high quality industrial connectors.

The Binder 713 series female socket is a reliable, low-cost, direct replacement for metal-bodied versions. Its plastic housing is manufactured from rugged polyamide and has exactly the same dimensions as industry standard metal versions.

Front and rear mounted versions are available in 4, 5 and 8-pole formats with either PG9 or M16 locking threads. Protected to IP67, the 713 series has solder contacts for wires up to 0.25mm² and the housing can accommodate cable sizes from 3.5 to 5.0mm. Contacts are gold-plated bronze with a current rating of 2 to 4A and solder bucket and dip solder versions are available. The new plastic 713 series connector has a minimum mating cycle of 100 cycles.

Alan Cook, Managing Director of Foremost Electronics, comments; "We have a long established relationship with Binder Connectors and we are pleased to be able to offer their new low cost plastic connectors. The new 713 series offers competitive pricing with no reduction in performance or quality"

Typical applications for the new Binder 713 series include industrial controls, drives, sensors and automation equipment.

Robots in hospital

Revolutionary hospital robots and cutting edge Agility software

Software company SoftSols Group is helping a hospital in Scotland become the first in Britain to use a fleet of robots to carry out routine deliveries.

The robots at Forth Valley Royal Hospital in Larbert, Stirlingshire will help to keep patient areas free of trolleys and other clutter, reduce infection risks and free up support staff to focus on priorities for patients.

Operating behind the scenes, in specially designed tunnels and lifts, they will also provide a calmer environment, to improve the patient experience.

Supporting this innovative solution is the Agility computerised facilities management Helpdesk system developed by the SoftSols Group. The software is being integrated with the robotic vehicles to monitor their performance delivering and retrieving a wide range of supplies.

The Agility software monitors the robots, generating performance management statistics as part of an automated system, which flags an alert should the robots not deliver on time. Trials of the robots are currently underway ahead of the hospital opening its doors to patients in August this year.

In addition to performance management for the robots Agility is being used to automatically allocate and dispatch porters based on their location in the hospital, take food orders at the bedside and manage a wide range of services including reception, estates maintenance, security and cleaning.
The software has been implemented as part of the hospital’s Facilities Management contract with international service company Serco, who are part of a Project Team led by Forth Health (A joint venture between John Laing and the Commonwealth Bank of Australia) and including Laing O’Rourke as the Design & Construct Partner.

Robin Barter of Serco says, “SoftSols Group rapidly understood the extremely complex requirements of the performance management system and the system interface with the robots, and then expertly translated these into comprehensive specifications and, subsequently, a coherent working system.”

David Hipkin, SoftSols Group Managing Director said, “This cutting edge project is exciting for lots of reasons, not least because it shows how flexible the Agility solution is. It is a whole new area where the software is not just supporting systems; it is enabling innovation and breaking boundaries.”

Environmental monitoring certs scheme

Environment Agency strengthens their Monitoring Certification Scheme policy

The British Environment Agency will outline a hardening policy on the use of MCERTS certified products at WWEM 2010 (Telford, GB, 10th and 11th November 2010).

Summarising his forthcoming presentation at the event, the Agency's Paul Wiggins says, “A good number of flow meters have now achieved MCERTS, so all new and replacement meters must now be certified.” He reports a high number of MCERTS product applications for both flow and analytical instruments and expects many of these to receive certificates at the WWEM event, adding: “We can now look forward to a time when the number of certified analytical instruments will enable us to enforce the MCERTS policy for all new and replacement water quality monitoring instruments.”

Speakers from the Environment Agency at WWEM 2010 will also provide an update on Better Regulation and the Environmental Permitting Regulations (EPR) and include the latest position on operator self-monitoring (OSM) and the role of MCERTS and Operator Monitoring Assessment (OMA) in supporting the move to OSM for industry and the water utilities.

Visitors to WWEM 2010 will include staff at every level within regulators, water companies, industrial manufacturers, consultants, education, researchers, process engineers and laboratory analysts.

Wednesday, July 21, 2010

Digitising preparation and recording in weighing operations

New solution provides food & beverage, CPG and life sciences manufacturers with out-of-the-box software and services with return in as little as 30 days

GE Intelligent Platforms has a new Proficy® Accelerator Solution for Weighing Operations – which reduces ingredient variation in food, beverage, CPG and life sciences manufacturing to increase product quality and safety. The new Weighing Operations Accelerator Solution digitizes the highly manual process of pre-production ingredient preparation and recording. This out-of-the-box solution reduces errors and waste by guiding operators through step-by-step instructions, automating Weigh Orders, and tracking actions and ingredient data for historical records.

“There are many challenges in Weigh and Dispense operations, including variability and risk of human error, inefficient and inaccurate recordkeeping, and complex and changing recipe formulations that often require expert operators,” said Sheila Kester, General Manager, Operations Management Solutions for GE Intelligent Platforms. “These challenges reduce resource flexibility, require extensive training and put product quality and safety at risk. Proficy Accelerator Solution for Weighing Operations brings the power of Work Process Management to manufacturers and drives more sustainable production.”

With a focus on operator guidance and equipment control in Weigh and Dispense activities, this solution can help automate work processes, embed expert knowledge, enable complete electronic record-keeping, improve product quality, reduce waste and cycle time, and increase resource flexibility.

Proficy Accelerator Solution for Weighing Operations combines full-featured software and a rapid engagement model that allows users to quickly automate and optimize Weigh and Dispense processes. Key capabilities include:

· Weigh order creation and dispatching

· Automated selection of appropriate weighing equipment based on established certification criteria

· Operator guidance during weigh and dispense of materials

· Registration of material lot code and verification of correct material usage

· Historical data recordkeeping, with report file generation for use in label printing, inventory updates, etc.

· Advanced analytics via industry-standard Microsoft reporting technologies including SQL Server Reporting Services

· Highly intuitive, graphical interface for process mapping and workflow generation

· Integrated ISA-95 modeling

Proficy Accelerator Solutions leverage proven products and best practices to rapidly demonstrate the value of GE’s Proficy software. These solutions combine the right blend of software and services components for a specific industry application or process. These offerings serve to rapidly prove the value of the solution with faster results than traditional projects for quicker ROI. Other Proficy Accelerator Solutions include:

· Accelerator for Centerlining

· Accelerator for Production Efficiency

· Accelerator for Change Management

· Accelerator for Manufacturing Energy Management Solution

· Accelerator for Packaging Performance Solution

EMC protection

Need more protection from EMC than you first imagined?

Have you ever designed a piece of kit which let you down, by being susceptible to EMC, when you didn’t think it ought to be?

Well, Rittal tell us they have the answer with the Ripac Vario subrack for mounting multiple board electronic solutions in 19” (482.6mm) racks, as the range is easily upgraded from standard to EMC after it has been completed. This will provide over 40dB of shielding effectiveness at 1GHz, both for incoming and outgoing protection.

For a simple upgrade add top and bottom covers, a rear panel, and a few gaskets to ensure good electrical and mechanical contact between adjacent surfaces. These components are readily available from stock and Rittal have a 20 strong sales team who can assist customers with the selection.

Of course if you want to ensure full protection from the beginning, the Ripac Vario EMC subracks are also available on short lead times, along with EMC front and rear panels and a wide range of useful accessories.

High resolution dual-channel ADC FMC Card

Designed for use in demanding DSP applications like SIGNIT, ECM and Radar Applications

Mistral Solutions has announced the availability of the highest resolution FPGA Mezzanine Card (FMC/VITA 57) module from Curtiss Wright, the new ADC511, a 400MS/s 14-bit, dual channel ADC card

The ADC511 uses two Texas Instruments ADS5474 analog to digital converters. Each device supports a sampling rate up to 400MSPS with 14-bit resolution. Available in both air-cooled and conduction-cooled rugged versions, the ADC511 is aimed at DSP applications such as Signal Intelligence (SIGINT), Electronic Counter Measures (ECM), and Radar.

The ADC511 speeds and simplifies the integration of FPGAs into embedded system design by providing high bandwidth I/O direct to the host card´s FPGAs. It eliminates data bottlenecks to increase DSP subsystem performance by routing high-speed ADC I/O directly to the host board’s FPGAs via the FMC connector.

The ADC511 can be fitted to FMC hosts like Curtiss-Wright’s FPE320, FPE650 and HPE720. The combination of the ADC511 with a suitable host provides developers with a high quality analog I/O and processing solution in a single VPX/VPX-REDI slot.

Tuesday, July 20, 2010

Dry swimming pools!

Effective climate control in indoor pools reduces risk of structural damage
Michell’s WM33 and WM261 relative humidity sensors are used to keep thousands of swimming pools around Europe dry.

While the hot weather in the summer sends many of us want to cool off in the water at the local pool, the high levels of humidity caused by the water vapour and heat in indoor swimming pools create a nightmare for the facilities managers. Without effective dehumidification and ventilation systems to keep the air dry, indoor pools face attack from a host of humidity-related problems such as mould and corrosion – not to mention complaints from visitors that it is uncomfortable.

Failure to keep control over levels of humidity of may eventually cause structural damage as the warm air carries the moisture into the walls and ceiling. When combined with chlorine from the pool chemicals, the humid air becomes highly corrosive, attacking both metal and concrete.

Controlling the humidity levels of the air in a pool room is easier said than done, when the surface of the pool itself acts as a giant humidifier each time the dew point of the air falls below the temperature of the water. Without effective dehumidification systems, the air ‘sucks’ vapour from the surface of the pool to create just the humid atmosphere you want to avoid.

The WM33 and WM261 from Michell Instruments work as an integral part of a dehumidification system to help ensure that the surface temperature of the water remains lower than the air temperature, and the relative humidity is kept at a constant 50 to 60%. Both instruments are work effectively with long-term exposure to the aggressive atmosphere created by the pool chemicals. They are also cost-effective, easy to re-calibrate and maintain for long-term accuracy and reliability.

Strain gauge amplification

Sub-miniature, high performance “In-Cell” amplifier

By incorporating the second generation “in-cell” amplifier (ICA) from LCM Systems, engineers can convert a strain gauge input to a voltage or a current output. This high performance, sub-miniature amplifier can be used for internal amplification of strain gauge based load cells, pressure transducers or torque transducers.

Available in six different versions with a wide range of current and voltage outputs, this latest amplifier with its robust construction has also been designed for quick and easy installation. With a maximum height of only 7.6mm, a standardised excitation of 5V DC and plated through holes for wire connections, its versatility makes it suitable for a wide range of OEM applications. Reverse polarity, short circuit protection and a fast calibration procedure are just some of the other features on this CE approved range of amplifiers.

According to Steve Sargeant, Managing Director, LCM Systems is one of only a few companies who have an amplifier suitable for load cell integration. “The technology has been available for many years and is widely used in pressure transducers.” he explains. “However, it hasn’t really been utilised with load cells but has considerable benefits. The signal obtained from a pre-conditioned and pre-calibrated load cell, can reduce installation time and can reduce downstream instrumentation costs.

LCM Systems can integrate the ICA into the majority of its comprehensive range of sensor products. For applications where this is not possible, a small inline enclosure, incorporating the ICA can be used.

Expanded sensor offering

Meggitt Sensing Systems announces expanded product line offerings.

Meggitt Sensing Systems has expanded the availability of its products through the company’s San Juan Capistrano (CA US) facility, to include Meggitt’s Endevco®, Sensorex, Vibro-Meter and Wilcoxon Research product lines, all offered under one umbrella.

This recent product line inventory expansion allows customers to now order sensors and instrumentation for aerospace, automotive, industrial, R&D and test & measurement markets directly through the facility as a single source, with fully dedicated customer service, sales and applications engineering support for all product lines. Available sensing technologies include high-performance piezoelectric, piezoresistive and variable capacitance accelerometers; shock and vibration sensors; dynamic and static pressure transducers (piezoelectric and piezoresistive); acoustic sensors and related instrumentation; displacement sensors, servo accelerometers, inclinometers, inertial measurement units, LVDT’s and other position sensing technologies; portable vibration monitors for condition monitoring; electromagnetic and piezoelectric shakers; conditioners; rotating machinery vibration amplifiers; calibration systems and services, as well as a full range of compatible cables and accessories.

Monday, July 19, 2010

Delivering operational excellence forum

GE-IP Third Annual Executive Forum on delivering operational excellence.

GE Intelligent Platforms recently hosted its third annual executive forum on “Delivering Operational Excellence” in GE’s Corporate offices in London (GB). Attendees participated in discussion about what GE, and other companies, are doing to tie operations management to business goals and how Proficy software drives real-time decision-making and enables lean operations.

This is the third year this event has run in London, a response to the building need of regional and global manufacturers to find solutions to the ever-increasing business challenges they face. GE has hosted and engaged resources from across GE to bring the most value possible to the event attendees.

Mark Elborne, President & CEO of GE UK, Ireland Benelux, served as Keynote Speaker at the Forum. “GE’s expertise in Operational Excellence positions us as a trusted partner that can bring the necessary products and methodologies to help customers reduce costs and improve their operations around the world,” he said. John started his career in the mechanical/aeronautical side of the Aircraft Industry,

In addition, GE Intelligent Platforms customer John Kidson, Executive Director of Manufacturing for Aberdare Cables spoke about their specific operational excellence journey using the Proficy Platform. Aberdare is the largest producer of Power, Telecommunications and Optical Fiber Cables in South Africa and is a leader in solutions for the infrastructure build, mining, construction and general industrial sectors.

Attendees gained valuable insight based on shared expertise and experience to help them on their journey toward Operational Excellence. They were able to network with other business leaders in manufacturing to discuss strategies, solutions, and tactics that drive out waste and costs. In addition, they heard what GE and other companies are doing to achieve Operational Excellence and the role that technologies like the Proficy Software platform play in delivering it. GE’s Proficy* software helps manufacturers improve the operator experience and drive Operational Excellence.
“GE expects to realize more than $500 million in benefits over the next three to five years from using Proficy Software solutions to drive operational excellence,” said Charlene Begley, President & CEO, GE Home & Business Solutions, GE Senior Vice President & CIO.

Proficy is an example of how GE’s $4 billion-a-year software and solutions services businesses are helping customers improve productivity.
“Business leaders are turning to GE for help in running their plants better and understanding how to run their operations better,” said Erik Udstuen, Vice President of Software and Services for GE Intelligent Platforms who hosted the conference. “Our technology today and in the future will meet their needs.”

10kV insulation testers

Fluke has introduced two insulation resistance testers offering digital insulation testing up to 10kV for testing a wide range of high voltage equipment including switchgear, motors, generators, transformers and cables. The new Fluke 1555 and redesigned Fluke 1550C Insulation Resistance Testers enable users to conduct tests over a wide range of voltages with a best-in-class 3-year warranty and CAT IV 600V safety rating. With their measurement storage and PC interface capabilities, they are the ideal tools for engineers, maintenance managers, industrial electricians, sub-station specialists and linemen using predictive and preventive maintenance programmes designed to identify potential equipment failures before they occur.

The Fluke 1550C Insulation Resistance Tester enables testing up to 5kV, while the Fluke 1555 tests up to 10kV. Test voltages are selectable in 50V steps from 250V to 1000V, then 100V steps thereafter. A ramp function enables breakdown testing, and timer settings of up to 99 minutes allow timed tests. A warning voltage function alerts the user that line voltage is present and gives the voltage reading up to 600V AC or DC for increased user safety.

Measurements can be stored in up to 99 memory locations. Each location is assigned a unique, user-defined label for easy recall. An optical interface cable enables easy downloading to a PC running the FlukeView® Forms software that is provided with the insulation tester. FlukeView Forms allows the user to document, store and analyse the readings, and present them in professional-looking documents.
Both feature a large digital/analogue LCD display for easy viewing. They provide automatic calculation of Dielectric Absorption Ratio (DAR) and Polarisation Index (PI) without additional setup. They also offer capacitance and leakage current measurement, as well as resistance readings up to 2T Ohms. A guard system eliminates the effect of surface leakage current on high resistance measurements.

Kit versions are also available which offer an IP67 hard case, heavy duty alligator clips and a calibration certificate.

Course in Cork

Attendees at a recent Electrical Apparatus in Hazardous Areas Customised Course in Cork recently organised by Douglas Control & Automation.

Picture shows (Lto R) Clive Knowles, Frank Gooding (BGE), Philip Dinneen, Wayne Rogers (M P RYAN LTD), Kieran Lynch (BGE), Robert Ryan (M P RYAN LTD), Martin Murphy (BGE), Hossein Soodharry (M P RYAN LTD), Eddie Collins (BGE), Paul Ryan (M P RYAN LTD), Bob Pearce (Flexi Tech Training Ltd).