UT15B MAX True RMS Digital Multimeter

The UT15B MAX True RMS Digital Multimeter is the base model in the UT15B MAX, UT17B MAX, and UT18B MAX series, positioned as a highly reliable and safe professional-grade digital multimeter. It features a built-in VFD anti-interference start mode, filtering out carrier frequency interference superimposed on sinusoidal waves or various distorted voltage signals, ensuring stable measurement of inverter output voltage and frequency. This series offers full-featured protection against false readings up to 30kVA and is equipped with an audible and visual alarm for incorrect current input jack insertion, ensuring user safety.

The UNI-T UT15B is a 6000-digit True RMS digital multimeter series designed for electrical and electronic engineers.​​​​​​​

Measurement

Horizontal Comparison of Three Models

• UT15B MAX True RMS Digital Multimeter: Designed for general scenarios such as routine electrical inspections, distribution cabinet maintenance, and electrical equipment repair, it offers the best value for money in the series.

• UT17B MAX: Building upon the UT15B MAX, it adds temperature measurement, making it suitable for industrial inspection scenarios requiring simultaneous monitoring of electrical parameters and equipment temperature.

• UT18B MAX: The flagship model in the series, it adds 12V LED testing functionality, suitable for lighting engineering and electronic equipment repair.

MXTD Supplier

Corporate Overview: Xi'an Mingxi Taida Information Technology Co., Ltd. (MXTD)

With more than a decade of specialized field experience in heavy industry, Xi'an Mingxi Taida Information Technology Co., Ltd. (MXTD) focuses on the development of next-tier analytical hardware and precision instrumentation infrastructure. Empowered by advanced automation architectures and strict quality assurance protocols, we ensure that our entire technology portfolio conforms to the highest global standards for mission-critical, fail-safe industrial operations.

Details of The UT15B MAX True RMS Digital Multimeter

The UT15B series consists of three progressive models, sharing the same core platform but with progressively increasing functionality:

Key Usage Tips

The UT15B MAX True RMS Digital Multimeter lacks a PC communication interface and does not support data transfer with computer software. This instrument is positioned as a stand-alone multimeter; all measurement data is read directly from the LCD screen.

Because it lacks PC communication capabilities, the UT15B MAX True RMS Digital Multimeter does not come with accompanying PC software.

If users require data logging and analysis functions, it is recommended to consider Uni-Trend models with USB/Bluetooth communication interfaces, such as the UT61E+ and UT71 series.

Tailored Engineering & OEM/ODM Fulfillment

Overcoming the Constraints of Commodity Hardware

Standard, off-the-shelf hardware configurations frequently hit performance bottlenecks when faced with highly specific, elite-tier operational demands. To bridge these deployment gaps, our veteran hardware development division provides highly adaptive, built-to-specification OEM and ODM customization services designed to integrate flawlessly into your proprietary network architectures.

We operate as a transparent extension of your internal R&D teams, translating complex field requirements into ruggedized, deployment-ready instrumentation. Our agile engineering lifecycle facilitates specialized optimization across three core technological dimensions:

• Electrical Performance & Signal Optimization: Designing application-specific frequency spectrum allocations, high-fidelity trace routing methodologies, and sophisticated, ultra-low-latency synchronous triggering topologies.
• Mechanical Ruggedization & Form-Factor Engineering: Developing heavy-duty physical chassis, custom-tailored enclosure dimensions, and specialized mounting interfaces engineered for harsh industrial deployment.
• PCB Topology & Architectural Adjustments: Adapting circuit board geometries, trace configurations, and connection methodologies to guarantee absolute backward compatibility with legacy mainframes and specialized host systems.

Our flexible prototyping and design workflow ensures that your most demanding operational timelines are met seamlessly—all while enforcing strict adherence to our zero-defect quality benchmarks from initial proof-of-concept validation through to high-volume industrial manufacturing.

Why Choose MXTD as Your Trusted Partner?

• Over a Decade of Industry Leadership: Leverage our 12+ year proven trajectory of pioneering breakthroughs in specialized metrology and automated control architecture.
• Elite Research & Development: Benefit from cutting-edge hardware engineering that continuously pushes technological boundaries to future-proof your systems.
• Zero-Tolerance Quality Control: Minimize field operational risks through our strict validation protocols and extreme environmental stress-testing.
• Full-Lifecycle Technical Consultation: Access uninterrupted, end-to-end engineering assistance and expert intervention at every phase of your project.
• Insured Global Supply Chain: Enjoy absolute peace of mind with our secure, highly traceable international logistics networks and door-to-door freight security.
• Client-First Synergistic Alignment: Experience flexible, collaborative problem-solving tailored to match your specific long-term commercial goals.​​​​​​​

FAQs:

✅How are the "1000V burn protection across all speed ranges" and "current range mis-insertion alarm" claimed by the UT15B MAX series implemented on the motherboard?

This is to address the common problem of users burning out meters by "measuring resistance while the circuit is live" or "inserting the test leads into the current jack to measure voltage."

1000V Burn-Out Protection: The internal mainboard incorporates high-voltage PTC thermistors, high-power varistors (MOVs), and current-limiting resistors at the input front ends of the resistance, capacitance, and diode ranges to withstand voltage surges of up to 1000V in the event of a malfunction.

Incorrect Insertion Alarm: The current jacks are equipped with mechanical or photoelectric sensors. When the knob is in the voltage/resistance range and the test leads are mistakenly inserted into the A or mA/μA jacks, the mainboard control chip will trigger a continuous buzzer alarm and display "InEr" on the screen, reminding the user to disconnect, thus protecting the mainboard and fuses.

✅If a multimeter in current mode doesn't burn out but still can't measure current, what component on the motherboard might be faulty?

This is a typical fuse blowout problem. The UT15B internal motherboard is equipped with two high-breaking-capacity ceramic fuses (typically 600mA/1000V and 10A/1000V) for overcurrent protection. If the current measurement exceeds the range, the fuse will blow first to protect the motherboard's core chip. In this case, simply remove the back cover and replace it with a fuse of the same specification.

✅What chip solution does the UT15B series multimeter motherboard use? Is it hard-sealed or soft-sealed (like a "cow dung" chip)?

The UT15B upgrade series (such as the PRO and MAX versions), positioned in the mid-to-high-end electrical and electronics engineer market, typically uses a dedicated integrated ADC chip in a hard package (such as a QFP package) on its internal motherboard, which works in conjunction with a microcontroller (MCU) for control. Compared to the "soft-packaged (bonded chip)" commonly found in low-end multimeters, hard-packaged chips have stronger anti-interference capabilities, better thermal stability, and are easier for professionals to trace signals and perform repairs at the chip pins.

✅Can the adjustable resistors (potentiometers) on the motherboard be turned upside down arbitrarily?

Never turn them arbitrarily. Although the UT15B is a highly digital multimeter, the motherboard usually still retains 1-2 fine-tuning potentiometers for reference voltage calibration. These are hardware-calibrated at the factory with a high-precision standard source. Blindly rotating them will cause an overall shift in measurement accuracy across all ranges.

Contact Us

If you are looking for an affordable excellent choice. As the portable multimeter, the UT15B MAX True RMS Digital Multimeter is a standard entry-level handheld digital multimeter market.It doesn't make you pay for features you don't need, yet it fully meets your requirements in terms of key measurement capabilities.

Email: manager03@mxtdinfo.com /  manager02@mxtdinfo.com