Kestrel – Reliable Partner for Professional Weather and Safety Equipment

About Kestrel

KestrelMeters.com and Nielsen-Kellerman are the manufacturers behind the Kestrel instruments. For more than ten years, the company has researched, developed, produced, and distributed handheld measuring instruments that set the industry standard. Founders Richard Kellerman and Paul Nielsen have developed patented technology and continue to enhance the Kestrel series through ongoing research and innovation.
The products are rugged, precise, and reliable instruments with refined technology and details that make a real difference in the field.

Certified and Guaranteed Accuracy

Every single unit is individually calibrated at Nielsen-Kellerman against NIST-traceable standards. All products are delivered with a complimentary Certificate of Conformity documenting the calibrations performed and the specified performance. This gives the user full confidence that the measurements are accurate and that the documentation can be trusted.

Production and Quality

Production takes place in the USA under strict quality requirements. Kestrel offers both field and factory recalibration, product servicing, and certification as needed.

Patented Technologies

Kestrel stands out with patented technologies, including:
• Removable, patented impeller
• Dual temperature sensor for precise relative humidity measurement
• Pressure-compensated wet-bulb temperature
• Patented solutions for temperature measurement in air, water, and snow

The sensor is positioned outside the instrument housing to ensure measurements reflect the environment, not heat from a hand or pocket. This makes Kestrel a preferred tool across avalanche safety, sports, energy, defence, and industrial applications.

Waterproof and highly impact-resistant

All Kestrel models are IP-67 rated, and each unit undergoes a vacuum test to ensure full sealing. The instruments are also drop-tested according to MIL-STD-810F. They withstand water, snow, dust, and rough field conditions, making them a natural choice for professional environments.

Kestrel and Equipnor Deliver Avalanche and Mountain Safety Equipment to NATO

For Equipnor, the partnership with Kestrel is about providing our customers with the most precise, reliable, and field-ready equipment available. Their technological advantages, documented accuracy, and high quality align with our focus on safety and operational performance.

We have recently entered into a multi-year contract with the NATO Support and Procurement Agency (NSPA) for the delivery of avalanche equipment. Through this agreement, NATO forces gain access to high-quality solutions designed for precision and safety in demanding alpine terrain. Kestrel is among the suppliers we have selected to ensure that the product range meets the standards required by the agreement.