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About RH Systems
Over 25 years of superior products, unmatched precision, and reliable outcomes
In 1998, industry veteran and leader Bob Hardy founded RH Systems, setting into motion the gold standard for high-precision humidity and temperature instrumentation for the next three decades. Headquartered in Phoenix, RH Systems designs and sells custom temperature and humidity solutions, including chilled hygrometers.
What We Do
Our humidity generation and measurement products are used in Commercial Calibration Laboratories and National Metrology Institutes around the world. Industries we serve include metrology, electrical power and environmental testing. Across industries, we are known for our exceptional customer service, superior products and precision in every measure.
Industries We Service
Metrology
We excel in the design and manufacture of high-precision humidity and temperature measurement solutions, trusted by national metrology institutes and calibration labs worldwide. Our instruments are integral to maintaining standards in our lab, ensuring unmatched accuracy and reliability.
Electrical Power
In the electrical power industry, we provide robust and reliable measurements essential for the operation of SF6 gas-insulated equipment. Our technology ensures accurate monitoring of humidity, pressure, and gas purity, supporting maintenance and operational standards.
Environmental Testing
Our technologies are crucial in environmental testing, ensuring precise humidity and temperature control for air quality assessment. Designed to meet rigorous standards, our equipment provides reliable, accurate data for effective environmental management.
Southwest Roots, Global Reach
RH Systems was founded by Bob Hardy in 1998 in Albuquerque, and relocated to Phoenix in 2017
Our founder isn’t just the head of our technical staff—he’s an industry leader. As the primary author of the RISP-5 he advanced humidity measurement/generation technology forward. He’s been called one of the brightest minds in our field. But please refrain from formalities and just call him Bob.
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Bob’s Story
With our expert team, innovative technology, and commitment to precision, we stand out in the industry. Rely on us for dependable, accurate solutions that adhere to stringent global standards.
Innovative Technology
We deliver innovative technology through precision-engineered solutions and products designed for unmatched accuracy and ease of use. By blending advanced engineering with customer-focused innovation, we provide reliable tools that simplify complex challenges.
Expertise & Experience
With decades of expertise in precision humidity and temperature calibration, RH Systems has built a reputation for engineering reliable, industry-leading solutions trusted by research institutions, manufacturers, and laboratories worldwide. Our proven track record of innovation—led by Bob Hardy’s pioneering work in the industry —demonstrates our unwavering commitment to delivering accurate, dependable solutions that professionals rely on every day.
Global Standards Compliance
RH Systems' calibration equipment meets and exceeds global standards, ensuring consistent accuracy for industries requiring internationally recognized precision in humidity and temperature solutions. We give our worldwide customers confidence in their measurements.
25 Years and Counting
And no matter where Bob and RH Systems is located, our track record of quality and innovation has provided top-tier solutions for military and government contracts with unmatched precision.
RHS Wins
Recently celebrating 25 years of RH Systems, we’re proud to share our accomplishments, leading the industry with innovative technology:
NVLAP ISO 17025 Accreditation
Awarded military contracts for CGS-240 Humidity Generator
Patented G3
Frost Point
Generator design
Frost Point
Generator design
PT12 Multi-
channel Precision Thermometer
channel Precision Thermometer
Meet Our Team
We’re a family-owned team of industry veterans, rising engineering talent, and exceptional support professionals. Though we’ve earned global recognition, we keep a small-business feel—treating every client and team member like family. Passion, expertise, and personal care drive everything we do.
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