Handheld instruments Isolated Gate Drivers
The ADuM4120 is an isolated gate driver designed for switching applications. It offers reinforced isolation and fast switching speeds, making it ideal for driving power transistors in isolated power supplies. Gate drivers are essential in systems where high voltage switching must be controlled from a low voltage domain. ADI’s gate drivers ensure that this control is safe and reliable.
Standard Data Isolator
RS-232, a reliable communication standard in medical devices for years, especially when paired with isolation components like the ADuM2201 that feature high isolation voltage and can meet safety standards such as 2× MOPP. However, USB provides alternate solutions in high performance and consumer-facing designs. With isolation solutions like the ADuM4160 and the LTM2884, USB can now meet both MOOP and MOPP requirements, making it suitable for patient-connected devices such as infusion pumps, monitors, and diagnostic tools. These isolators ensure safe data exchange with non-medical systems while protecting patients from electrical risks.
Even wireless medical devices often include USB ports for charging and firmware updates. Since these ports can be accessed at any time, isolation remains essential. Although USB requires physical cabling, its safety and versatility, especially when properly isolated, make it a strong choice for modern medical designs alongside RS-232 where needed.
CONCLUSION
MOOP and MOPP are essential classifications in medical device safety, guiding engineers in designing systems that protect both operators and patients from electrical hazards. The IEC 60601-1 standard provides clear guidelines for insulation, isolation, and leakage current, but implementing these requirements demands careful planning and component selection. ADI offers a comprehensive portfolio of isolation and power management solutions that support compliance with MOP standards. From digital power isolators, gate drivers, and isolated interface, ADI’s products enable designers to build safe, reliable, and high performance medical devices. By understanding the differences between MOOP and MOPP and applying the right design strategies, engineers can ensure that their devices meet global safety standards. This not only facilitates regulatory approval but also protects the lives of those who depend on medical technology every day.
Analog Devices
www.analog.com Instrumentation Monthly May 2026 Q
PORTABLE METHANE DETECTOR
ED Environmental Systems has announced the launch of the Huberg SEM5000, a powerful, field-proven
portable methane detector for landfill surface emissions monitoring. The SEM5000 is the latest addition to QED’s popular Huberg range of gas analyzers and detectors. Built around LASER-based tunable diode laser absorption spectroscopy (TLDAS) technology, the SEM5000 provides fast and precise readings at levels as low as 1ppm, with zero cross- sensitivity to other gases.
With a response time of below 2 seconds, technicians are able to accurately pinpoint the location of leaks during walkover surveys, making the SEM5000 the ideal solution for landfill surface emissions monitoring, wellhead and surface penetration leak detection, environmental compliance surveys, or methane hot spot detection.
Designed for the field, the SEM5000 features a rugged IP65/NEMA4 enclosure, with the entire device weighing just 2.9lbs – half as much as comparative technologies – allowing it to be easily carried by a sole operator. The SEM5000 is able to warm up in as little as 30 to 60 seconds, and features a field- swappable 10-hour battery, providing enough power for a full working day and minimizing the need for back-to-base charging. ATEX Zone 1 certification allows the instrument to be used in
hazardous environments, with an operational range between -13°F and 122°F. James Jones, head of Gas Analyzer and Detection Products at QED, says: “The SEM5000 is built with the needs of technicians working in the field in mind – it’s fast, accurate, and has been designed specifically for the outdoor environment. “Ultimately, the SEM5000 aims to make methane detection as simple as possible – minimal downtime, no additional devices required, and no difficulty generating reports. Operators need only walk their route, and the SEM5000 will handle the rest.”
Equipped with GPS, Bluetooth, and QED’s bespoke SEMSoft software, the SEM5000 allows users to easily manage data and generate highly accurate reports for compliance, with the seamless transfer of readings to a PC, tablet, or mobile device for reporting and analysis. The SEM5000 can be used for up to two years before it requires factory calibration, which is handled through the QED Express servicing programme. With a flat rate for complete calibration and repairs, free return freight, and a 10-day turnaround time no matter the location, QED Express keeps the instrument in peak working condition all year round.
Jones concludes: “The SEM5000 is placed to deliver a step-change in the way that the landfill industry approaches methane detection. No matter what the specific application may be, the SEM5000 is the all-in-one solution to ensure quick, accurate, and hassle-free results. If you’re monitoring methane, look no further than the SEM5000.”
QED Environmental Systems
www.qedenv.com 49
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