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Introducing RH Systems Revolutionary

CGS-240 Humidity Generator

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RH Systems Founder, Bob Hardy, walks through what makes our CGS-240 revolutionary for calibration technicians.

Humidity Generation

The CGS-240 is a fully automated two-pressure, two-temperature humidity generator. This portable, self-contained system produces stable atmospheres of known humidity and temperature to provide accurate humidity and temperature for the calibration of humidity sensors, hygrothermographs, chilled mirror hygrometers, and other environmental measuring devices.
Large, Thermally Uniform Chamber
A cable management system, sample gas injection to the center of an air circulation fan, local pressure measurement, and a multi-position shelving system is surrounded by high performance thermal insulation and a soft silicone profile seal for perfect tightness. 
Continuous Run Time, No Down Time
The CGS-240 may run continuously without the need to shut down (the only requirement being that sufficient water level is maintained in the 20 liter distilled water reservoir). The reservoir may be filled at any time without the need to stop the system, thereby allowing uninterrupted generation of humidity for days, weeks, or months. 
Continuous Data Collection
RHS Control allows for various instruments to connect via digital communication for continuous monitoring, control, and associated data collection. Data is automatically stored to files during collection for later import to Excel and other post-process analysis and graphing programs.
Large Chamber, No down time, High-Accuracy

A Humidity Generator Built for Calibration Technicians

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Design Based On Fundamental NIST Developed Principles

A system capable of continuous, high-accuracy humidity generation over a wide range of humidity, temperature, and flow rates.

Specifications

Operation

Documents

Warranty

Accessories

Specifications

Specifications

The CGS-240’s specifications are outlined, below

Generating Range:
Relative Humidity 10 … 95 %RH (5 %RH optional)
Dew/Frost Point -25 … 70 °C DP, -23 … 0 °C FP
Chamber Temperature -0 … 72 °C (-10 & +85 °C extended ranges optional)
Chamber Pressure Ambient
Flow Rate 5 … 20 SLPM (5 … 50 SLPM optional
Accuracy: (0 to 70°C, 10 to 40 l/min)
Relative Humidity The larger of ±0.1 %RH or ±0.5% of indicated RH value
Dew/Frost Point ±0.10 °C
Temperature (TS, TC) ±0.030 °C
Pressure ±0.02% of full scale
Chamber Temp Uniformity <0.035 °C
Flow Rate ±1 SLPM
Integrated Sensors: Cal Range: Cal Uncertainty:
Low Range Pressure (PL) Ambient … 25psia ±0.005 psia
High Range Pressure (PH) Ambient … 150psia ±0.030 psia
Saturator Temperature (TS) -15 … 72 °C ±0.03 °C
Chamber Temperature (TC) 0 … 72 °C ±0.03 °C
Chamber Liquid Temp (TCL) 0 … 72 °C ±0.10 °C
Presaturator Temp (TP) 0 … 75 °C ±0.10 °C
Flowmeter 0 … 50 SLPM ±1 SLPM
Chamber:
Dimensions 15”H x 12”W x 12”D (380 x 300 x 300 mm)
Type Circulating air-jacket encased within liquid jacket
Adjustable Shelf Three shelf positions, one shelf supplied
Access Ports Three 50 mm diameter thermally controlled access ports
Window Size 14”H x 12”W x 12”D (370 x 300 x 300 mm)
Window thermal control Liquid jacketed, multi-pane, thermally controlled
Chamber light Integrated light with on/off touchscreen control
Integrated Control Interface:
Operation Software RHS Control Software
Calibration Software RHS Plateau Software
Display 18.5” Multi Touch Monitor with pinch/zoom/drag
Gas Inlet Pressure:
Using external pressure source 120 psig max
Using supplied air compressor 60 … 90 psig @ 20 l/min typical
Environmental Conditions:
Operating Environment 15 … 30 °C, 20 … 60 %RH
Storage Environment 0 … 50 °C, <95 %RH non-condensing
Power Requirements:
Voltage 208 … 240 VAC, 50/60 Hz, single phase
Current 20 Amps

Operation

Operation

The CGS-240 has specific facility requirements. Please read the entire CGS-240 manual before operating.

Documents

Documents

Learn more about our CGS-240 Humidity Generator

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

Design Based On Fundamental NIST Developed Principles

A system capable of continuous, high-accuracy humidity generation over a wide range of humidity, temperature, and flow rates.

Large, Thermally Uniform Chamber

The system incorporates a cable management system, sample gas injection into the center of an air circulation fan, local pressure measurement, and a multi-position shelving system. These components are enclosed within high-performance thermal insulation and sealed with a soft silicone profile to ensure a perfectly tight environment.

Continuous Run Time, No Down Time

The CGS-240 may run continuously without the need to shut down (the only requirement being that sufficient water level is maintained in the 20 liter distilled water reservoir). The reservoir may be filled at any time without the need to stop the system, thereby allowing uninterrupted generation of humidity for days, weeks, or months.

Continuous Data Collection

RHS Control allows for various instruments to connect via digital communication for continuous monitoring, control, and associated data collection. Data is automatically stored to files during operation for later import to Excel and other post-process analysis and graphing programs.

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

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    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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