Digital instruments for HVAC-R measurement: the new Sauermann manifolds
The new Sauermann Si-RM350 and Si-RM450 digital manifolds offer accuracy, connectivity and durability, with integrated probes and accessories for complete and safe HVAC-R diagnostics.

The growing popularity of heat pumps, reversible systems, and low -GWP refrigerants has made testing and maintenance operations more complex. HVAC-R professionals must rely on tools capable of correctly interpreting the parameters involved, minimizing margins of error. This is where Sauermann's new Si-RM350 and Si-RM450 digital manifolds come in, designed to offer fast and reliable diagnostics even under challenging operating conditions.
Compatibility with all A1, A2L, and A3 refrigerants —including flammable ones—is a real advantage: it means you can work on domestic and industrial systems without restrictions. Highly responsive NTC sensors and an anti-reflective glass display ensure clear, instant, and error-free readings, even outdoors, in direct sunlight, or in dimly lit environments.
A complete ecosystem: Sauermann wireless probes, accessories and tools for seamless HVAC-R diagnostics
In addition to the precision of its manifolds, Sauermann offers a complete set of wired and wireless probes for measuring pressure, vacuum, temperature, and psychrometric parameters. The new "parrot beak" clamp design, capable of adapting to tubing from 6 to 42 mm, simplifies daily operations, reducing installation time and increasing reading reliability.
Stable wireless connectivity of up to 100 meters allows for location-independent work, resulting in greater efficiency in the field. By integrating load scales, vacuum pumps, and complementary accessories, Sauermann builds a coherent ecosystem of interconnected instruments, where each device communicates with the Sauermann Pilot app. The result is complete digital management: from real-time data to remote configuration, all the way to the automatic generation of regulatory-compliant reports.
European design and certified manufacturing: robust tools for HVAC-R efficiency and sustainability
Sauermann's digital manifolds represent not only a technical advancement, but also a clear positioning choice: providing the HVAC-R market with instruments designed and manufactured entirely in Europe, at the company's center of excellence in Montpon-Ménestérol. In an industry increasingly focused on sustainability, energy transition, and reduced consumption, the ability to rely on precise, robust, and durable instruments is a strategic asset.
For installers, maintenance technicians, and designers, this means knowing that measurements are reliable, a prerequisite for ensuring energy efficiency and operational safety. With this range, Sauermann confirms its role as a leading technology partner , capable of guiding professionals toward an approach to measurement that is no longer merely functional, but an integral part of the quality and competitiveness of their work.
