Innovative Hygrometry

RH Systems’ 373 Dew Point Mirror features a full-color, high-resolution LCD touch screen that displays data clearly, ensuring you get the information you need, when you need it. With intuitive configuration customizations, you can set up your screen exactly how you want it, and the system will remember, showing the same configuration every time you power it up. A front-mounted mirror provides quick and easy access for cleaning.
Ensure Frost With Rapid Cooling
Automatically force all sub-zero condensation to a known state of frost, allowing dew point temperature and other humidity parameters to be mathematically computed from the measured frost point temperature 
A Simpler Solution For High Dew Point
Dew point condensation difficulties are averted with the addition of an externally connected heated hose
Customize Mirror Check Intervals
Our automated Mirror Check procedure dries the mirror, compensates for residue on the mirror, then returns the system to its previous operational status

Specifications

Operation

Documents

Warranty

Accessories

Specifications

Specifications

The 373 Dew Point Mirror's specifications are outlined, below

Model 373LHX 373LX 373L 373S3 373S 373H 373HX
Measuring range:
Dew/Frost point -70
+95ºC
-95
+20ºC
-80
+20ºC
-60
+20ºC
-40
+20ºC
-30
+70ºC
-20
+95ºC
% RH @ 20C 1–100% 2–100% 5–100%
ppmv, minimum 2.5 0.05 0.5 11 130 375 1000
Thermoelectric mirror cooling: 3-stage 2-stage
Cooling: Refrigeration Air/Water
Measuring-head heating: +100ºC +40ºC +40ºC None None +60ºC +100ºC
Accuracy:
(Dew/Frost Point)
± 0.1°C
Reproducibility: ± 0.05°C Dew/Frost Point
Display: Active Matrix Color Graphic LCD
Digital I/O: RS-232
Analog output: 2 (optional 4) selectable ±10V 4 … 20mA
Gas couplings: VCR Cajon 1/4″ Swagelok 1/4″
Mirror temperature sensors: PRT-100
Sample gas pressure: 35 psia (2.5 bar abs.)
150 psia (10 bar) optional
Sample gas flow rate: 0.5 … 1 l/min, internal pump and flowmeter
Sample gas circuit: 316L stainless steel, electropolished
Operation temperature: +15 … +35°C
Storage temperature: -10 … +50°C
Ambient humidity: 90% RH max., non condensing
Voltage: 100 … 120 VAC, 50/60 Hz
or
200 … 240 VAC, 50/60 Hz
100 … 240 VAC, 50/60 Hz
Power consumption: 500 W 200 W 300 W
Width, inch
(mm):
17.75
(440)
20.50
(520)
17.75
(440)
17.75
(440)
17.75
(440)
17.75
(440)
17.75
(440)
Height, inch
(mm):
9.25
(236)
10.00
(255)
9.25
(236)
9.25
(236)
9.25
(236)
9.25
(236)
9.25
(236)
Depth, inch
(mm):
18.25
(461)
19.75
(500)
20.25
(511)
18.25
(461)
18.25
(461)
18.25
(461)
18.25
(461)
Weight, lb
(kg):
75
(34)
100
(45)
100
(45)
45
(20)
45
(20)
45
(20)
55
(25)

Operation

Operation

The 373 Dew Point Mirror has specific facility requirements. Please read the entire 373 Dew Point Mirror 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

Ensure Frost With
Rapid Cooling

Automatically force all sub-zero condensation to a known state of frost, allowing dew point temperature and other humidity parameters to be mathematically computed from the measured frost point temperature.

A Simpler Solution For High Dew Point Measurement

Dew point condensation difficulties are averted with the addition of an externally connected heated hose.

Customize Mirror Check Intervals

Our automated Mirror Check procedure dries the mirror, compensates for residue on the mirror, then returns the system to its previous operational status.

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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