Blog

Thermal Imager for Temperature Measurement

Thermal Imager for Temperature Measurement

President Cyril Ramaphosa announced on 24 May that the entire country would move from level 4 to level 3 lockdown with effect from 1 June 2020, which marks a significant shift in the government’s approach to the pandemic.

“This will result in the opening up of the economy and the removal of a number of restrictions on the movement of people, while significantly expanding and intensifying our public health interventions,” he said.

This means that South African businesses will have to find the best balance for controlling Covid-19 and avoiding economic disaster – and there’s a stack of regulations and directives to implement.

MTiB12

The health and safety directives state that every employer must take measures to screen all their employees when they report for work daily to ascertain whether they have any of the observable symptoms associated with COVID-19.  However, the size of the business determines the level of detail required and while smaller businesses need a basic plan, large and medium size businesses would require a more detailed strategy to cater for the large number of persons at the workplace.

Schools and universities will also have to institute a plan when the country moves to lockdown Level 3 and a third of the student population will return to campus, however, daily Covid-19 screenings of students and staff members will be required.

Screening requires non-contact thermometers and already a multitude of these instruments are available but many don’t live up to the manufacturers’ promises and experts say the accuracy of temperature checking depends on the type of thermometer being used and the person administering the test.

So for employers to “provide and maintain as far as is reasonably practicable a working environment that is safe and without risks to the health of employees” careful consideration will have to be given to the type of non-contact thermometer used and Major Tech recommends a thermal imager that will do the job accurately and reliably.

Screening large numbers of people is time-consuming and requires a high-performance thermal imager such as the MTiB12 from Major Tech, developed for the coronavirus epidemic situation and offers instantaneous measurement at 50Hz.

The system default setting is 37.3 °C and, as soon as a temperature measurement point exceeding 37.3 °C is detected, the device will sound a ‘beep beep’ alarm indicating a high temperature alert.

The MTiB12 comes with free and powerful professional analysis software, Bluetooth real-time transmission, which can save and share temperature measurement data at any time, store full-screen temperature measurement information, and support online temperature measurement analysis.

Other features include:

  • Display resolution 2-inch display, 240 x 320 pixels
  • Screening temperature range: 32~42 °C with a measurement accuracy: ± 0.5 °C
  • Thermal sensitivity: <0.1°C I 300C (80°F) / 100mK
  • lmage frame rate: 50Hz
  • Focus mode: Focus-free
  • Working wavelength: 8-14um
  • Accuracy: ±2°C (+ 3.6°F) or ± 2% of reading
  • Automatically marks the highest and lowest temperature in the area
  • Image storage format: BMP format with temperature measurement data
  • Bluetooth
  • Rechargeable lithium battery that can work continuously for 8 hours
  • Drop test: 2m drop resistance
The Impact of Load Shedding on Electrical Devices

The Impact of Load Shedding on Electrical Devices

South Africans are adapting to continual rolling blackouts, more politely known as load shedding. But, while everyone is cursing Eskom for being left in the dark or stuck in traffic for hours at a time, the damage caused by load shedding is far more than lost time and the macro impact on the economy.

The financial problems caused by load shedding will also impact individuals in their homes and businesses as they are faced with electrical products that, seemingly for no reason, stop working. This will naturally also affect suppliers and installers of electrical equipment who will be accused of either selling poor quality products or doing an inferior installation job.

The reality is that, while poor quality products and bad installations can cause problems, load shedding will damage even the best electronic products on the market, eventually leaving them broken beyond repair. The reason for this is not the loss of power, but the surge of current and voltage spikes when the electricity is switched on again, says Major Tech’s Rhodam Evans.

While many think switching the power on or off is a simple task, the way load shedding works means that every time the power comes back, some technician has flipped the switch at a substation, suddenly sending a stream of around 11 000 Volts back into the circuit.

Single-phase power in the average home runs on 230 V. Therefore, when the lights come on again, all the appliances in that particular suburb suddenly get a surge and voltage spike much more powerful than 230 V. This only lasts for a microsecond, but it is enough to damage electrical equipment, from your television to your lights.

Electronics can’t last against voltage spikes

“Even the most well-designed equipment of the highest quality can simply not handle these surges time after time. Many electrical devices are built with some form of protection against voltage spikes, but these are designed to handle surges that happen occasionally, not daily or even multiple times daily. For example, many circuits have metal oxide varistors (MOV) to protect against occasional surges, but even these wear out and can’t protect the circuits after the constant spikes due to load shedding.

“Major Tech has seen lights which have actually exploded after one spike too many,” adds Evans, “as well as USB ports that are black shells of what they once were. These results are not common, thankfully, but damage to electrical equipment is.”

Surges and voltage spikes cause damage each and every time, although most often the equipment carries on working. Eventually the equipment will fail and it may seem illogical which particular device or LED light fails or what path the current takes (it looks for the shortest path to the earth), but damage is a given

What can be done to protect yourself?

Since electricity users in South Africa are at the mercy of Eskom and can do nothing to resolve the problem, the only solution is to take precautions and protect your electronics. These precautions cost money, but will save money in the long term because few suppliers are willing to constantly replace devices that have been damaged by electrical surges. A warranty does not cover malicious damage to the system and it does not cover surges and voltage spikes.

“Surge protectors have therefore become vital necessities in a world with load shedding,” explains Evans.

Level 3 surge protection happens at the wall sockets. These surge protectors plug into the wall socket and your equipment is then plugged into the protectors. This will protect your equipment from all surges. Level 2 protection is the ideal as this is added to the circuit board by a qualified professional to protect the whole premises.

Evans warns that surge protectors don’t last forever either and while they will protect the electronic equipment you use every day, they will also eventually need to be replaced. He also advises that there is an enormous difference between a surge protector and lightning protection. A lightning strike in your vicinity can release far more power than Eskom and a surge protector will not stand up to the pressure.

“Dealing with load shedding is a challenge and we should all take responsibility for the equipment in our houses and businesses,” concludes Evans. “Suppliers will not simply continue to replace equipment damaged by load shedding as this practice will devastate their businesses. The best remedy is to unplug as many electrical devices as possible during load shedding and install surge protection on those that are not or cannot be unplugged.”

For more information on how to handle surges and voltage spikes, please view the interview at https://www.enca.com/news/impact-load-shedding-appliances.

Mini Environmental Meters

Mini Environmental Meters

Major Tech has made a range of mini environmental meters available to its South Africa customer base. There are four different meters, all designed and manufactured to the high standards Major Tech is known for.

MT90 Mini Thermo-Anemometer
The first device is the MT90 Mini Thermo-Anemometer which is used for measuring air temperature and velocity. The device includes a dual-line, four-digit LCD display with a backlight. It is also equipped with Bluetooth to make it easy to transfer data from the MT90 to the user’s Android or iOS smartphone using the Meterbox Pro app.

The air velocity can be measured in m/s, km/h, ft/min, or knots, while temperature is measured in degrees Celsius or Fahrenheit. The MT90 can continuously measure the temperature and velocity over time, providing the user with the minimum, maximum and average readings.

A low-battery display will alert you when the 9V battery is running low, while the auto power-off function will turn the MT90 off if it has not been used for 10 minutes.

MT91 Mini Hygrometer
The MT91 Mini Hygrometer measures the ambient temperature (-20 to +60 degrees Celsius) as well as the relative humidity and displays the data on a dual-line, four-digit LCD display with a backlight. Temperature is measured in degrees Celsius or Fahrenheit, while humidity is expressed as a percentage.

The MT91 includes Bluetooth to transfer data to the Meterbox Pro app on the user’s smartphone, while calculating minimum and maximum values over a period of time. The low-battery function warns if the 9V battery power is getting low, and the device is set to automatically power-off if unused for 10 minutes.

MT95 Mini Sound Level Meter
The MT95 is used for acoustic measurements in a variety of environments, from factories to offices to schools. It is used for noise engineering, sound quality control and health & safety operations, and can measure sound in a range of 35dB to 130dB. Readings are displayed on a 4-digit LCD display.

It features a 0.5-inch electret condenser microphone. An electret is a ferroelectric material that has been permanently charged, removing the need for a polarizing voltage to operate the microphone. The MT95 measures both A and C weighted sound levels and includes a background sound absorber.

Running off one 9V battery with low-battery alerts, the MT95 will automatically power-off after 10 minutes of inactivity.

MT96 Mini Particle Counter
The MT96 Mini Particle Counter measures the particle mass concentration in the air, along with the air temperature (0 to 50 degrees Celsius) and relative humidity. Major Tech is the first company to offer an instrument containing a combination of these measurements in one meter, designed to measure air quality as well as for energy saving tests.

The device simultaneously measures PM2.5 and PM10 particle density. PM10 is particulate matter 10 micrometres (μm) or less in diameter, while PM2.5 is particulate matter 2.5 μm or less in diameter – about 3% the diameter of a human hair.

Readings are displayed on a 2-inch TFT colour LCD display and data can be transferred to the user’s smartphone via Bluetooth. Sampling time can be set from 30 seconds to 5 minutes and the data collected is automatically saved to the instrument’s memory, which holds about 5,000 measurements.
The user can also set the automatic power-off function to shut the instrument down after 3, 10 or 30 minutes of inactivity in order to save power on the 3.7V Li-Ion battery.

For more information on these and other electrical instruments and products, contact Major Tech at 086 162 5678, [email protected], or go to www.major-tech.com.

K2007R 1000A AC Clamp Meter

K2007R 1000A AC Clamp Meter

The K2007R 1000A AC TRUE RMS clamp meter from Major Tech is a testing tool that permits current measurements on live conductors without interrupting the circuit. The K2007R is an indispensable addition to the technician’s toolbox as its 33 mm diameter tear drop jaw makes it easy to work in tight spaces.

More than simply a current meter, the K2007R offers three functions in one:

  • A True-RMS current meter. AC is represented as a sine wave with changing amplitude, which means current measurements can vary at different points in time. True-RMS (root mean square) converts AC signals into similar DC signals and this provides a more accurate AC reading.
  • A True-RMS voltage meter.
  • A resistance meter. Measured in Ohms, resistance a measure of the opposition to the passage of current through a conductor.

The K2007R clamp meter can measure AC current up to 1000A and AC/DC voltage up to 600V. A resistance of up to 6kΩ can also be measured and it includes an audible continuity tester. If there is a circuit fault (a continuity of below 90Ω), the continuity buzzer instantly alerts the technician of a problem without requiring him/her to look at the meter.

The ergonomically over-moulded body has been designed to ensure comfort and convenience, allowing safe one-handed operation, while readings are presented on the clear LCD display. Test leads with protective caps are included in the box, along with two R03 1.5V batteries which provide about 170 hours of continuous measuring time.

A low-battery warning is displayed when the batteries fall below normal operating voltage and a sleep function automatically powers the device off after 10 minutes of inactivity.

To assist technicians in taking readings, the HOLD button ensures that the current reading is retained on the LCD display until it is dismissed. This allows for accurate measurements in hard to reach and dark spaces where instant readings may be misread.

Designed to the highest quality standards, this instrument has been tested according to International Electrotechnical Commission (IEC) 61010-1 standards: CAT IV 300V and CAT III 600V. The K2007R is also rated IP40 to prevent the intrusion of small objects.

Visit K2007R for more technical information.

AC Current Clamp Meter with Data Logger

AC Current Clamp Meter with Data Logger

The MT745 from Major Tech is a clamp meter used to measure the AC current running through an electrical conductor in tight spaces. It permits electricians to measure the current without touching the conductor or having to disconnect the supply from the conductor.

The MT745 includes a large backlit LCD display to make it easy to read the measurement, which can be in the range of 0.5A to 3,000A. Pressing the “hold” button on the current meter will keep the latest readings on the screen, while the built-in Bluetooth communication allows users to send data to the Meterbox app on their smartphones.

The device has a sample time of 200 milliseconds. The data logger keeps 16 320 measurements, and users are presented with an analogue bar graph, and can also view the frequency and inrush current. The MT745 uses two LR6 batteries and to save power the instrument will automatically power down after 15 minutes of inactivity.

The flexible current coil is 457 mm in length. The Meterbox Pro app is available for Android and iOS smartphones at no charge.

 

For more information on these and other electrical instruments and products, contact Major Tech at 086 162 5678 or [email protected]

Heavy-duty True-RMS Multimeter

Heavy-duty True-RMS Multimeter

The MT1005 is a heavy-duty True-RMS industrial digital multimeter for measuring AC/DC voltage and current, resistance, capacitance, frequency (electrical and electronic), duty cycles, diode testing, continuity and thermocouple temperature.

The device is equipped with a large 50 000 count, 320 x 240 TFT colour LCD display and provides fast A/D converting sampling time, high accuracy, built-in data logging and trend capture functionality. It offers 4mA to 20mA process loop measurements with a percentage reading, and operates in a temperature range of -200°C to 1350°C.

It traces any equipment interruptions and records the events on the device for future review. Not only does the MT1005 trace interruptions and record the events, it can also memorise datasheets and transfer this, and other data to a PC or a smartphone via Bluetooth.

A True-RMS-meter can measure both pure waves and non-sinusoidal waves more accurately. Nonlinear loads, such as variable speed drives or computers can distort waveforms and an average responding meter can be as much as 40% lower or 10% higher in its calculations when measuring distorted waves.

The battery-powered multimeter includes a Li-ion rechargeable battery that provides around 6 hours of operating time, and the AC adaptor to charge the system is included in the box. A low-battery warning will alert users when the voltage drops below the required operating voltage, and the MT1005 also offers an automatic power-off function that the user can set to between 5 minutes and 30 minutes – or it can be disabled completely.

With a wide range of features and double-moulded housing to ensure it handles tough conditions, the MT1005 is ideal for heavy-duty usage. Major Tech also offers a range of accessories for the device, from clamp on adaptors to additional batteries, leads and probes.

For more information, contact Major Tech at 011 872 5500, [email protected] or www.major-tech.com.

 

Are your lights and lamps EMC approved?

Are your lights and lamps EMC approved?

Have you ever noticed your radio making crackling noises when your cell phone rings? Or have you ever seen waves and strange noises on your television when your mobile is near, and it receives an SMS? What you’re seeing and hearing is electromagnetic interference (EMI).

EMI is a disturbance generated by electrical or mechanical equipment, which can include ignition systems, cellular networks, lighting and many others. EMI in our daily lives is more of an annoyance than anything else, but it can cause problems, such as when your garage door opens when you try to change the TV channel with the remote. In extreme cases it can degrade the performance of an electrical circuit or even stop it from functioning altogether – such as disrupting the functioning of critical equipment like pacemakers.

To ensure that electrical and mechanical components don’t cause any EMI, the South African Bureau of Standards (SABS) and the Independent Communications Authority of South Africa (ICASA) have set standards that electrical equipment must adhere to. This is in line with international standards on Electromagnetic Compliance (EMC).

EMC standards regulate the electromagnetic emissions from equipment to ensure they don’t interfere with other equipment. The standards are also designed to ensure that equipment is reasonable immune to this type of interference, although one can’t judge what the interference strength of non-compliant equipment may be.

All lamps and lighting products sold in South Africa, must be “EMC Approved”. Unfortunately, in South Africa these standards are not always followed, and many lamp and lighting products are not EMC Approved, which means they may interfere with other equipment, or be subject to interference.

When purchasing these products, buyers are advised to check that their chosen devices are labelled as EMC Approved. It’s also a good idea to make sure the company that manufactured your products is a reliable and trusted brand. You may find a cheap product that looks great, but if it hasn’t been EMC Approved you could be in for a surprise. More importantly, if the product you like is not EMC Approved, it may be worthwhile asking “Why?”.

All lamps from Major Tech have been through the approval process to ensure they meet the EMC Approved standards and can be used anywhere in the world. The same applies to Veti products. Before any lamp and lighting products are made available to the public, they all go through the compliance process and are certified as EMC Approved, allowing customers to opt for Veti and Major Tech products with confidence.

For more information contact Major Tech at 086 162 5678, [email protected], or go to www.major-tech.com

High Powered LED Floodlights

High Powered LED Floodlights

Floodlights are designed to cast a wide beam of light to provide clarity over a large area in partial or total darkness. They are used widely in a number of different situations, from lighting your garden at night to providing light to parking lots and sports stadiums.

Major Tech, a well-known and respected brand in the electrical industry in South Africa provides a range of LED floodlights, the HLF Floodlight Series for use in different scenarios. Designed to the highest standards, the HLF floodlights are EMC approved, which means they do not emit levels of electromagnetic energy that cause interference with other devices in the vicinity.

LEDs are commonly used in floodlights because of the lower power consumption of LEDs as well as their longer lifespans. Each HLF floodlight features multiple 50W SMD (industry standard surface-mounted) LED modules, depending on the size of the area customers wish to cover. These modules are built into a single housing with one IP67, fully isolated driver per LED module to improve the lifespan and light distribution of the fittings. The IP67 rating ensures that the drivers are dust and water resistant, a necessity since they are used outdoors.

The HLF floodlight series can be used in a variety of environments, from warehouses to agricultural holdings, parking lots and even sports grounds. There are four product ranges in the HLF series, each designed to the same quality specifications, aimed at different use-cases:

  • HLF10CW: This is the smallest floodlight in the range. These 100W floodlights produce about 9,000 Lumens.
  • HLF20CW: These 200W floodlights deliver around 18,000 Lumens.
  • HLF30CW: At 300W of power, this range of floodlights delivers 27,000 Lumens.
  • HLF50CW: The most powerful floodlight in the series using 500W of power, this floodlight produces 45,000 Lumens.

All the HLF floodlights provide a 120o light beam angle and are delivered with a 50cm cable as standard. The housing for the series is a heavy-duty aluminium frame that is IP66 rated and the fixing brackets allow for easy positioning of the lights once installed.

Major Tech Launches a New Range of Quality Batteries

Major Tech Launches a New Range of Quality Batteries

Major Tech, the well-known and respected brand in the electrical industry in South Africa, has launched its own branded range of batteries that are available in electrical wholesalers, hardware stores and other DIY outlets.

Major Tech has been selling batteries for many years, but the batteries sold in the past were not sold under the Major Tech brand and the company was not in control of the quality of manufacturing. Since Major Tech is known for the quality of its products and back-up service, the company decided to launch a new range of batteries under its own brand.

As Major Tech branded products, people purchasing the batteries have the assurance of quality of design and reliability.

The new Major Tech batteries are one-of-a-kind as they have been uniquely customised for the South African market. The instructions on each pack are written in English, Sotho, Zulu and Afrikaans to ensure they reach the broadest section of the country as possible.

The Maxi Alkaline range of batteries is cost effective, delivering long-lasting performance and is available in a variety of sizes. In the 1.5V category, the AAA and AA batteries are available in packs of four, while the C- and D-size batteries are available in packs of two.

Major Tech has also released a square PP3 Maxi Alkaline battery operating at 9V, which are available as individual items. For remote controls and other wireless devices, an A23 battery operating at 12V is also available in packs of five or as individual items.

The more affordable Super Heavy Duty range of batteries is also available for hobbyists and people looking to run everyday devices. As with the Maxi Alkaline batteries, they are available in a variety of sizes.

The AAA and AA batteries are available in packs of four, while the C- and D-size batteries are available in packs of two. The 9V PP3 batteries are available as individual items.

To make it easy to differentiate the two ranges, the Maxi Alkaline range is recognisable as a silver battery with an orange stripe, while the Super Heavy Duty batteries are silver, with an orange stripe and a blue top.

Although the two ranges are available at different price points, they have been manufactured to the quality standards Major Tech is known for. The company conducted an in-depth search for a manufacturer that could deliver the quality of battery required, and the range will be supported by Major Tech’s nationwide footprint.

 

Analyse power quality and calculate energy loss with the K6305

Poor quality of power causes not only physical damage to equipment, but also results in downtime, which, in turn, lowers productivity and a substantial increase in energy costs.  Using the K6305 Power Quality Analyser it is as easy as 1 – 2 – 3, set up the instrument, check wiring and record!

Major Tech’s Rugged Compact Power Meter offers 3PH four wire, 3PH  3 wire or Single Phase multifunction measurements, recording and analyzing of power systems.  This meter can be used for various wiring systems and can measure up to 3 systems on a single-phase 2-wire circuit.  It can be used for measurements of instantaneous, integrated or demand values.  “This instrument has an automatic wiring check function to prevent incorrect connections”, says Werner Grobbelaar, “The meter will check the connections and display the results on the LCD screen.” A wide selection of clamp sensors allows measurements from 0.1A to 3000A of which the instrument automatically recognizes what kind of clamp sensor is connected to it.

The K6305 meter has large memory capabilities and can store up to 2GB.  Measured data can be saved in SD card or the internal memory and the data can be transmitted to PC via USB or Bluetooth.  Measured data can be checked on android devices in real-time by using Bluetooth function.

Free Android software “Kew smart 6305” is available on “Google Play Store” (*), supporting Android Ver2.2-3.2

The K6305 complies with IEC61010-1, CAT III 600V safety standards and include power and energy measurement features such as Voltage (True RMS), Current (True RMS), active power, apparent power, reactive power, active energy, apparent energy, reactive energy, power factor (cosθ), frequency, demand measurement and current flowing on the neutral line (only on 3phase 4 wire measurement).

Standard Accessories: K7141 (Voltage test lead set 4 pcs), K7185 ( 500A Ct’s x 3), K7148 (USB cable), K7170 (Power cord), K9125 (Carry case), SD Card (2GB), Kew Windows (PC software), Batteries x 6 and Quick manual.

Optional Accessories: K8124, K8125, K8126, K8127, K8128 (Clamp sensors). K8129 (Flexible clamp sensor), K8132 (Power supply adaptor), K9132 (Carrying case with magnet).

Major Tech’s K6305 easy-to-use power meter effectively helps you to locate, predict, prevent and troubleshoot problems in power distribution systems and is an absolute must have in every toolkit!

To purchase the K6305 call 086 162 5678 or click the link http://major-tech.com/product/compact-power-meter/

CART