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Low frost point humidity generation

The G3 Frost Point Generator

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RH Systems Founder, Bob Hardy, walks through what makes our G3 revolutionary for Humidity Generation.

Powerful Flexibility

The G3 is a low humidity generator that encapsulates essential tubing, pressure regulator, flow regulator, and saturator within a sealed vacuum chamber. This eliminates atmospheric water vapor permeation and the need for thermal insulation materials in and around thermally controlled components. Additionally, Free-Piston Stirling Coolers are used to cool the saturator. The G3 achieves Ultra-Dry Conditions below 1 PPB.
Dual CFC-Free Cryocoolers
Based on the highly efficient dual cryo-cooling mechanism, the G3 is capable of generating ultra-low humidity, achieving humidity concentration below 1 PPB (Part Per Billion).
Excellent Thermal Isolation
Instead of standard insulation techniques like fiberglass, urethane foams, or other thermal barrier materials, the saturator sits at the center of a high-vacuum chamber. Devoid of molecules that could otherwise transfer thermal energy, the vacuum chamber offers excellent thermal insulation. So rather than adding thermal barrier materials, the G3 utilizes its vacuum to prevent thermal transfer by limiting molecular interaction.
Prevent Water Vapor Permeation
In the G3, permeation susceptible valves and components are housed within the vacuum chamber. As the vacuum intensifies due to removal of gas molecules from within the chamber, water vapor within the vacuum chamber is also significantly.
Engineered for Precision

Smart Insulation & Independently Controlled Outputs

The G3 offers up to three independent flow controlled outputs. Each output can flow up to 5 liters/minute, with a total combined flow up to 10 liters/minute.
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Reliable Dryness and Minimized Heat Transfer for Optimal Conditions

An improvement over conventional designs, the G3 has better accuracy and performance at low humidity, improved thermal insulation and control, faster cool down characteristics, and better maintenance access.

Specifications

Operation

Documents

Warranty

Accessories

Specifications

Specifications

The G3’s specifications are outlined, below

Generated Humidity Output:
Water Vapor Concentration Range <1 PPB … 12000 PPM
Frost/Dew Point Temperature Range -120 °C FP … +10 °C DP
Frost/Dew Point Temperature Stability ±0.05 °C
Frost/Dew Point Temperature Accuracy ±0.1 °C (FP >-80 °C)
Generated Flow Rate Output:
Gas Flow Rate Range, per output 1 to 3 outputs at 0 … 5 slpm each
Gas Flow Rate Range, total 0 … 10 slpm
Gas Flow Rate Accuracy ±0.2 slpm
Gas Flow Rate Stability ±0.1 slpm
Temperature:
Saturation Temperature Control Range -120 °C … +20 °C
Saturation Temperature Control Accuracy ±0.05 °C
Saturation Temperature Control Stability ±0.03 °C
Test Temperature Connections 2 external temperature connections
Measurement Accuracy ±0.05 °C
Probe Type Pt100, 4-wire
Pressure:
Saturation Pressure Control Range Near ambient to 1 MPa (150 psia)
Saturation Pressure Accuracy ±0.05% FS
Test Pressure Measurement Range 0.07 … 0.12 MPa (11 … 17 psia)
Test Temperature Connections 2 external temperature connections
Test Pressure Accuracy ±0.05% FS
Utility Requirements:
Gas supply 0.3 … 1MPa @ 10 slpm. Max pressure 3 MPa
Gas Type Dry air or nitrogen
Supply Voltage 100-240 VAC, 50/60 Hz, Single phase
Power Consumption 1.5kW
Environmental:
Operating temperature +15 °C … +40 °C
Storage temperature 0 °C … +50 °C
Humidity 10 … 95 %RH, non-condensing
Weight and Dimensions:
Height 1.2m
Width 0.8m
Depth 0.8m
Shipping Weight 318 kg

Operation

Operation

The G3 is composed of multiple components and has specific facility requirements. Please read the entire G3 manual before operating.

Documents

Documents

Warranty

Warranty

RH Systems (RHS) warrants the products it manufactures or distributes to be free of defects in material and workmanship under normal use and service when operated within the specified design limitations for a period of 12 months from date of initial shipment. Under this Warranty, RHS will, at its discretion, repair or replace any component that upon examination by RHS or its duly authorized representatives proves to be defective during the warranty period provided the system is returned to the factory for inspection and repair shipping prepaid. Improper or unauthorized maintenance, storage, repair, or alteration of any kind by personnel other than RHS or its duly authorized representatives may void all warranties. Warranty may also be voided for misuse, neglect, accident, corrosion, and improper installation. This Warranty is exclusive and in lieu of any and all other warranties of merchantability, fitness for a particular purpose, or any other warranty, expressed or implied, and all other liabilities and obligations on the part of RHS. RHS will not be liable for any other claims or damages, either direct, indirect, or consequential arising out of the use of its products.

Accessories

Accessories

Let’s Chat

Let's Chat
Joshua Stine
Chief Relationship Engineer

At RH Systems, we’re constantly pushing ourselves towards advancing our products and services for a wide range of clients, setting a new standard for accuracy and paving the way for future breakthroughs.

Customer satisfaction is the foundation of our reputation, so we never take a one-size-fits-all approach. We work with you to understand your needs and provide customized solutions that work seamlessly right from the jump.

Ready to chat with our Sales Team? Send an email to sales@rhs.com and we’ll get right back to you.

Let’s Connect

Fill out the form below and we’ll be in touch soon.

    Frequently Asked Questions

    What are your hours?

    9am – 5pm Arizona Time
    Where are you located?

    1225 West Houston Ave, Gilbert, AZ 85233
    Do you offer virtual or in-person training?
    Yes, please contact sales@rhs.com for a quote.
    What products do you service?
    We service the entire RH Systems line of products, you may find our products here.
    Do you service products not manufactured by RH Systems?
    Yes, please contact sales@rhs.com for more information.
    Are you accredited?

    As a NVLAP accredited laboratory, RH Systems is reassessed to ensure that our quality and practices maintain such standards (NVLAP Laboratory Code 600161-0). The National Institute of Standards and Technology (NIST) administers the National Voluntary Laboratory Accreditation Program (NVLAP), which accredits public and private laboratories based on evaluation of their technical qualifications and competence to carry out specific calibrations or tests. 


    NVLAP provides an unbiased third-party evaluation and recognition of performance. Accreditation signifies that a laboratory has demonstrated compliance with NVLAP management and technical requirements, including quality systems, personnel, accommodation and environment, test and calibration methods, equipment, measurement tractability, sampling, handling of test and calibration items, and test and calibration reports. Learn more here.

    Where can I find the range for each unit?
    On our Product Page, click the specific unit. Then, click on download brochure.

    Brand Warranty

    At RH Systems, we proudly stand behind the quality of our products with a 12-month warranty from the date of shipment. If any part proves defective in material or workmanship under normal use, we’ll repair or replace it—just send it to us prepaid for inspection. To keep your warranty intact, all maintenance or repairs should be handled by RH Systems or an authorized representative. While the warranty doesn’t cover misuse, accidents, unauthorized modifications, or corrosion, you can count on us for expert support and reliable service every step of the way.
    See Our Warranty

    REVIEWS

    “Bob is more interested in the subject matter and the science behind his products than in making a sale. He wants to make sure that a solution will work for us. Beyond their products, RH Systems will continue to innovate and amaze the humidity community with new systems and instruments that will advance the metrological community.”

    Tee Yee Zheng Supertron Sensing

    RH Systems helped me understand the systems better. That makes me ask better questions and ultimately become a better technologist. They show that their customers are clearly everything. From the way they treat us, you can tell that people must absolutely love working there.

    Paul Gomez Sandia National Labs

    “Bob and the staff at RH Systems are the greatest and their undying devotion to supporting the community is greatly appreciated. They are prepping the next generation of professionals in our community for a continuation of support unparalleled in temp and humidity and should be a beacon for all metrology.”

    Joseph Rindone Metrologist at Paladin Metrology Advocates

    “RH Systems goes the extra mile, without fail. And they stand behind what they do. Customer service is a dying art. RH Systems still gives you one-on-one attention and they always pick up the phone. In our industry, we have a lot of red tape. Bob helps us navigate this and wants to take on the challenge of forming a custom solution. He is invested in what his customers need. That speaks volumes.”

    Roger Free Calibration Technician at Haleon

    “RH Systems has created the best frost point generator in the world. The G3 is very fast, has high precision and is still very easy to use. The three separately flow-controlled outputs give you maximum flexibility when connecting measuring devices.”

    Helmut Hager CEO, Techmetrics

    “I’ve never met anyone who wants to do more than what his customers expect than Bob. I respect and admire that philosophy so much! You will never regret doing business with Bob Hardy!”

    Janne' Mummert Business Consultant, JM Consulting
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