Sparks Electrical News March 2022

TOOLS AND INSTRUMENTS

6

Keep safe with the MT310 Earth Leakage Tester

Fluke Calibration 9190A Ultra- Cool Field Metrology Well delivers best-in-class stability

protects the user against the fault and any potential harm. It is therefore imperative for contractors toensure theirworkmanship is up to standard and that the protective device is, in fact, in good working order. Apart from a good earth connection, a working ELCB or Earth Leakage unit is required by law to ensure the user’s safety. To ensure that this crucial part of the installation is working correctly, the contractor / registered person or any competent person to test it with a reliable Earth Leakage tester. Major Tech’s upgraded MT310 Earth Leakage Tester is a compact, lightweight, and easy to use socket polarity and earth leakage tester that tests 3-wire 230 V ac circuits and earth leakage circuit breakers. A unique feature in this new version of the tester is the ac Voltage indication on the LCD display. It also features an adjustable milli-amp (mA) trip setting with a separate test button. The unit can be set from 10 mA (used for testing saturation and to eliminate nuisance tripping) to 35 mA. The meter is supplied in a durable double injection moulded rubber housing, which protects it from the knocks and bangs of everyday use. The MT310 socket ELCB tester ensures the electrician of correct wiring in residential or industrial applications in accordance with SANS 10142. Additionally, the bright neon indication assists the user in confirming the wiring status of the circuit under test. Simply plug the MT310 into a wall socket and the results are clearly displayed. For additional user safety, the MT310 is rated CAT IV 300 V and CAT III 600 V. mode change lever that is located on the top of the motor housing has four setting options –the lock-on position for continuous chiselling applications; a trigger position for intermittent chiselling applications; a bit angle setting and then of course the rotation with hammering. A soft rubberised D-grip handle and side handle provides added comfort and greater control, while minimising hand fatigue and pain. It also reduces the level of vibration absorbed by the operator. The HR4013C has a red LED service light that indicates when to replace the carbon brushes. The HR2631F with anti vibration control The HR2631F Rotary Hammer is powered by an 800 W motor and produces speed and efficiency during drilling, chiselling and demoli- tion operations in concrete. The Anti Vibration technology built into this specific model will produce unrivalled lower levels of vibration. This is achieved by using active vibration absorbers and a damper spring that absorbs the reaction force caused by the drill bit at the moment of impact. Another great feature on the HR2631F is the rotation reversing system using a brush holder unit. The advantage of this system extends the life of the carbon brush by 2.7 times longer that the existing models, protecting the brush from dust and debris and providing the same speed and torque even in reverse. The one-touch sliding chuck allows for quick and easy bit changes. This three operation mode rotary hammer with its easy to operate operation mode change lever (located on the top of the gear housing) enables the user to switch between rotation and hammering modes and vice-versa without rotating the chuck. There are 40 different bit-angle settings that are adjustable without a chisel adaptor and then of course the rotation with hammering. The HR2631F has a LED job light that illuminates your work area. The Makita HR2631F and HR4013C, with their low level of vibration will make a substantial difference to both user and project alike, enhancing operator comfort and productivity. Enquiries: sales@major-tech.com

E lectrical equipment can pose a significant, even life-threaten- ing risk to people when mishandled, installed incorrectly or not maintained properly. Many electrical contractors are tasked with installations, repairs or modification of electrical systems, but fail to inspect their work according to SANS standards once completed. As specified in SANS 10142-1: 2020 section 5.2.3, “People, animals and property shall be protected against harmful earth fault currents by protective measures …” This safety standard is there to ensure that in the event of a fault, the protective device opens the circuit and T he HR4013C Rotary Hammer from Makita is powered by a 1100Wmotor and produces super speed and efficiency during drilling, chiselling and demolition operations in concrete. The Anti Vibration technology built into this specific model will produce unrivalled lower levels of vibration. This is achieved by using active vibration absorbers, and damper springs absorb the reaction force caused by the drill bit at the moment of impact. The level of vibration is further reduced by completely separating the machine holding section from the motor/transmission section. Therefore, when the machine moves the handle stays still, similar to how a shock absorber works on a motor vehicle. One of the extra features of the HR4013C is the soft no load function that reduces the vibration of the tool body when idling and accordingly decreases the amount of vibration to the operator’s hands. It also minimises the deflection of the bit tip when you begin to chip. The one-touch sliding chuck allows for quick and easy bit changes. Due to rotary hammers being used in rugged applications, Makita has focused on the safety aspects of both the operator and the tool. A torque limiter has been built in to ensure stable torque control that stops the rotation of the drill bit in case it hits against any reinforcing bars, thus preventing possible muscular injuries to the operator or damage to the tool. This 2-mode rotary hammer with its easy to operate operation

Comtest is offering the Fluke 9190A Ultra-Cool Field Metrology Well, a small, lightweight and accurate dry-block calibrator with best-in-class stability. The 9190A is ideal for pharmaceutical, biomedical and food processing applications that demand strict quality control and regulatory process compliance, including on-location validation and calibration of RTDs, thermocouples, thermometers, and other temperature sensors. The 9190A conforms to EURAMET cg-13 guidelines for best measurement practices for temperature dry-block calibrators. This ensures that the 9190A specifications for accuracy, stability, axial (vertical) uniformity, radial (well-to-well) uniformity, loading, and hysteresis have been thoroughly and carefully defined and tested. It has a wide temperature range (-95 to 140 degrees Celsius) to cover the coldest and warmest temperatures required in pharmaceutical, biomedical and food processing applications, operating at ultra-cold temperatures not typically available with a calibration bath. The 9190A uses no bath fluids, keeping clean rooms clean, making it easier to transport, and delivering faster heating/cooling rates. It offers best-in- class temperature stability (+/-0,015 degrees Celsius) for consistent, accurate results. The 9190A with ‘process’ option features 4 – 20 mA connectors, a reference thermometer input, 4-wire PRT/RTD input with an accuracy of +/- 0,02 degrees Celsius, and a reference sensor control to minimise the effects of the axial gradient when a reference PRT is aligned with short sensors.

Rotary hammer drills that combat vibration

Enquiries: sales@comtestco.za

Calog and Instrotech are moving

Enquiries: www.makita.co.za

Instrotech and Calog Instruments moved into Comtest House Group Headquarters in Linbro Park, Gauteng, at the end of January 2022. Instrotech distributes and manufactures a range of process control instrumentation and specialised systems to the South African and inter- national markets. Calog Instruments creates high quality process con- trol instrumentation and industrial electronics designed to control one or more system parameters, such as temperature, flow rate, weight or position. Pieter Deysel, Instrotech MD, says, “This move will equip Instrotech and Calog Instruments to better support and service our valued customers and suppliers. “We have enjoyed doing business with our loyal clients and appreciate their support. We look forward to welcoming clients, old and new, to our new premises,” Deysel added. All other contact details for both Instrotech and Calog remain the same.

Enquiries: sales@instrotech.co.za

SPARKS ELECTRICAL NEWS

MARCH 2022