—— Since 2004 ——

Electrical Parameter Isolation & Measurement

PAS offers complete, highly reliable, and safe current and voltage sensors and transmitters. The current sensors cover a measurement range from 0.005 A to 20,000 A, with accuracy options from 1% down to 0.001%. The voltage sensors measure from 10 mV to 10,000 V, with accuracy options from 1% down to 0.1%.

Applications

Solar inverters, wind power, battery monitoring, energy storage systems, EV charging stations ...

Factory automation, motor drives, frequency converters (VFDs), switching power supplies, PLC integration, CNC machines ...

Substation monitoring, power distribution, smart grid, grid quality analysis ...

Data centers, telecom base stations, HVAC control, building energy management, EV charging stations ...

Petrochemical plants, power generation, railway systems, e-bikes, electroplating ...

We master electromagnetic isolation, Hall zero-flux, fluxgate, and Rogowski coil technologies — backed by multiple patents for high accuracy and reliability.

We use advanced equipment from FLUKE, Agilent, and other top brands, plus premium raw materials such as DOW potting compounds, TI chips, and ASIC chips — ensuring superior reliability.

Customizable housing, magnetic core, parameters, or even dedicated devices. Our wide product range includes Hall sensors, transmitters, and more — tailored to fit your application perfectly.

From pre-sales needs analysis to custom samples and mass production. Our consultative approach ensures the right solution for your application — no detours, no guesswork.

From renewable energy to heavy industry — powering progress

About Us 

Founded in 2004, Beijing Passion Technology Co., Ltd. (PAS) is a leading provider of electrical parameter isolation and measurement solutions. Through years of rapid growth, PAS has established an integrated production system, R&D center, quality assurance framework, and a highly skilled sales and customer support team. All employees undergo rigorous technical training, enabling strong capabilities in R&D, manufacturing, and sales.

In 2006, PAS obtained ISO9001 quality management system certification and has maintained strict compliance ever since. Certain product lines have also earned CE and RoHS certifications for both domestic and international markets. PAS masters...

View more