• Skip to primary navigation
  • Skip to main content
  • Skip to footer

ProUmid

  • Deutsch
  • Products
    • Dynamic Vapor Sorption (DVS)
      • SPS
      • Vsorp
      • Accessories & Options
        • Video Camera
        • Raman Spectroscopy
        • Water Vapor Permeability
        • Large Objects Kit
        • Membrane Dryer
        • Sample Carousels and Sample Dishes
      • Optional Software
        • DVS Analysis Software
        • 21 CFR Part 11 Software
    • Moisture Equilibration
    • Humidity Generators
      • MHG32
      • MHG100
    • MCC Humidity Reference
  • Applications
    • Pharmaceutical Industry
    • Food Research
    • Building Material
    • Packaging & Polymer Films
    • Basics of DVS analysis
    • DVS Add-ons
    • Powder Conditioner for Moisture Equilibration
  • Seminars
  • Contract Analysis
  • Literature
    • SPS/Vsorp References
    • MHG References
  • Events
  • About us
  • Contact
  • Career
Home / Modular Humidity Generator MHG / Controlled humidity with the modular MHG32
Controlled Humidity MHG32

MHG32 – Controlled Humidity

The MHG32 system is designed for controlled humidity in challenging instrument environments where quick changes of RH in small volumes are required. The unique feature of the MHG32 is the generation and control of relative humidity directly at the target volume and thus enabling a fast and accurate response even at very low flow rates.

The MHG32 is available with maximum flow rates of 100ml/min, 500 ml/min or 1000ml/min and is suitable for chamber volumes from approx. 20ml up to 2000ml. The modular setup and easy adaption in combination with the broad temperature and humidity range makes the MHG32 a perfect match for all kind of applications. The large number of possibilities for customization allows for an easy integration of the MHG32 as an OEM product into analysis instrument solutions. Learn more about the special features of the humidity generators of the MHG series.

Controlled Humidity MHG32 - Central Control Unit
Controlled Humidity MHG32 - High degree of customization
Controlled Humidity MHG32 - Mixing Head

Unique system architecture

The patented design of the MHG32 is different from a standard instrument for controlled humidity. Usually, a flow of humid air is generated inside the instrument and then transported via a heated transfer line to the target system or volume to be humidified. Such a configuration results in a slow regulation behaviour and a large dead volumes in the supply line.

To avoid such issues, the MHG32 was designed differently. The MHG32 consists of a central control unit and an external mixing unit. The central control unit monitors and regulates the flow rates of gas and water and transports the media to the mixing unit in separate lines. The humid air is generated inside the mixing unit, that is directly attached to the outer wall of the target volume.

Fast and precise control of humidity

By generation of the gas flow inside the mixing unitdirectly connected to the target volume, any potential issues by a dead volume in the supply line are completely avoided. The MHG32 allows for a fast and precisely controlled humidity even at very small flow rates.

Closed regulation loop

The humidity sensor is placed directly inside the volume to be humidified. A closed regulation loop ensures a precise, stable and fast controlled humidity and makes the system unsusceptible against perturbations.

MHG32 System Architecture

Temperature and humidity range

The mixing unit is small but powerful and allows for precisely controlled humidity over the full temperature and humidity range.

Intergrated temperature control: MHG32 TC

The MHG32 with the option TC provides active temperature control with a heating system directly inside the mixing unit connected to the system to be humidified.

For precise humidity regulation at low flow rates: MHG32-100

The MHG32-100 is equipped with high precision flow controller for humidity regulation at very low flow rates up to 100ml/min.

External oder passive heating/cooling

The MHG32 is also available without active temperature control for applications around room temperature or in which a customer-specific heating/cooling system is used. The mixing unit can be externally heated or cooled in the range from 2°C to 95°C.

For applications without active temperature control, the unavoidable evaporation enthalpy when humidifying air is compensated by a heater inside the mixing unit, ensuring precisely controlled humidity up to saturation over the entire temperature range, even if the mixer head is only heated passively via heat conduction.

MHG32 TC with active temperature control
MHG32 Thermal Coupling
MHG Performance

High degree of customization

With the various available possiblities for customization, the MHG32 can be adapted to any target and allows for complete integration into instrument solutions as an OEM product.

Humidity sensor

The sensor interface is fully configurable. Any sensor with an analogue signal output can be connected.

Operation & software interface

The MHG can be operated localy via the front panel or by remote control via RS232 or Ethernet. The software interface is fully configurable and allows for complete integration into the control software of the target system.

Additional options

  • Miniaturized T/RH sensor for tiny volumes and narrow spaces
  • Additional temperature sensor for thermally separated samples (e.g. on a heat or cooling stage)
  • Sensor antechamber for systems that do not allow to place the RH sensor inside the target volume
MHG32 Application Example XRPD
MHG32 Application X-Ray Powder Diffraction

Contact us to receive a quotation for the MHG32

Get a Quote

Technical Specifications

MHG32MHG32 TCMHG32-100/TC
selectable flow rate0 … 500 ml/min or 0 … 1000 ml/min0 … 500 ml/min or 0 … 1000 ml/min0 … 100 ml/min
selectable humidity range2% RH to 98% RH (±0.8% RH at10 … 30 °C)*2% RH to 98% RH (±0.8% RH at10 … 30 °C)*2% RH to 98% RH (±0.8% RH at10 … 30 °C)*
applicable temperature rangecompensation of evaporation enthalpy, no active temperature control**ambient to 80°CAs TC, ambient to 80°C
water supplyremovable tank, 700 mlremovable tank, 700 mlremovable tank, 700 ml
gas supplycompressed air / nitrogen
2 bar to 10 bar
dry, clean, oil-free (class 1, ISO 8573-1:2010)
compressed air / nitrogen
2 bar to 10 bar
dry, clean, oil-free (class 1, ISO 8573-1:2010)
compressed air / nitrogen
2 bar to 10 bar
dry, clean, oil-free (class 1, ISO 8573-1:2010)
interfacesRS232
Ethernet (optional)
RS232
Ethernet (optional)
RS232
Ethernet (optional)
dimensions & weightwidth 450 mm, depth 320 mm, height 140 mm, weight 6.5 kgwidth 450 mm, depth 320 mm, height 140 mm, weight 6.5 kgwidth 450 mm, depth 320 mm, height 140 mm, weight 6.5 kg
* The minimum achievable humidity depends on the water content of the carrier gas. Deviation data based on Rotronic HC2A-S sensor.
** External heating / cooling can be adapted by the customer. Temperature range: Min. 2 °C to Max. 95 °C.
*** Other gases on request. By default, flow controllers are calibrated to air as the carrier gas.

Documents

PDF icon Data sheet- MHG32 PDF icon Product brochure – MHG

Footer

Legal Information

  • Legal notice
  • Privacy policy

Address

ProUmid GmbH & Co. KG
August-Nagel-Str. 23
89079 Ulm, Germany
+49 (0)7305 2030 440
info@proumid.com

Aftersales Service

Technical Support
Service Visit
Disposables

ProUmid GmbH & Co. KG

Copyright © 2025

    DVS Product Advisor

    Step 1: Select temperature range

    Step 2: Select additional sensors

    Step 3: Select additional measurement methods

    Step 4: Select instrument by sample size, sample sorption capacity or the type of application.

    If you can tell us about the samples you want to analyze, the available sample quantity, the sample hygroscopicity or your area of application, we can give you a recommendation for the device that meets your requirements best.

    Step 5: What is the average sample quantity available and/or how hygroscopic are the samples?

    Tiny: <10mg, very low hygroscopicity
    Small: >10mg, low hygroscopity
    Medium: >100mg, moderate hygroscopicity
    Large: >500mg, abundant hygroscopicity

    Step 5: Which field of application is most likely to apply to your samples?

    A: Pharmaceutical pre-formulation
    B: Pharma, Food, Fine Chemicals, Cosmetics, Material characterization, Polymers, Electronics, Fibres, Paper, Wood Analytics, Textiles
    C: Building Materials (concrete, wood, insulation), Fertilizer, Permeability and Packaging testing

    Recommended Instrument(s):

    Additonal sample trays such as the Permeability kit and the requirement for tiny samples do not match. Try to deselect the additonal sample tray or to increase the sample size.

    Additonal sample trays such as the Permeability kit and the application pharmaceutical pre-formulation do not match. Try dp deselect the additonal sample tray or to select a different field of application.

    Outside view of the product SPS23-100n

    SPS23-100n

    The SPS23-100n is a highly sensitive system with a gravimetric resolution of 100 nanogram. It is designed for applications where only very small quantities of sample material are available like in pharmaceutical preformulation. Read more about the SPS23-100n...

    vapor sorption analyzer - SPS - glass lid open

    SPSx-1µ-Advance

    The SPSx-1µ Advance model shows best weighing peformance and a very high reproducibility of better than ±2µg at a gravimetric resolution of 1µg. Small and medium sized samples are measured at extremely high resolution over the full load range from 10mg up to 22g. Read more about the SPSx-1µ-Advance...

    vapor sorption analyzer - SPS - glass lid open

    SPSx-1µ-High-Load

    With its dual weight range, the SPSx-1µ High Load enables to analyze small samples at a very high resolution of 1µg (±5µg reproducibility) as well as samples heavier than 22g at a resolution of 10µg. In combination with the largest number of samples that can be measured simultaneously this system is the most versatile vapor sorption analyzer on the market. Read more about the SPSx-1µ-High-Load...

    Vapor Sorption Analyzer – SPS – Big Sample Pans

    SPS11-10µ

    The SPS11-10µ system is a robust and easy to operate multisample vapor sorption analyzer. With the large load range of the balance, the system is perfectly suited for the analysis of bulky or heavy samples and for permeability measurements. Typical fields of application are fertilizer, building materials and packaging material. Read more about the SPS11-10µ...

    Moisture Sorption Analyser - Vsorp

    Vsorp Enhanced

    The Vsorp Enhanced combines very high resolution of 1µg for small and medium samples up to 22g sample mass and 10µg for samples up to 220g sample mass. In combination with the 23 available sample positions, the Vsorp Enhanced is a powerful and versatile moisture sorption analyzer. Read more about the Vsorp Enhanced...

    Moisture Sorption Analyser - Vsorp

    Vsorp Plus

    The Vsorp Plus accomodates small and medium samples at a gravimetric resolution of 10µg for samples up to 220g sample mass. Additional samples trays such as for permeability measurements make this system a versatile moisture sorption instrument. Read more about the Vsorp Plus...

    Moisture Sorption Analyser Vsorp - 5 sample carousel

    Vsorp Basic

    The Vsorp Basic is a very robust and easy to operate multisample moisture sorption analyzer. With the huge load range of the balance and the large sample dishes, it accomodates even the biggest bulky or heavy samples. Typical fields of application fertilizer as well as building materials. Read more about the Vsorp Basic...

      Please send me

      Quotation forInformation on

      Water Vapour Sorption Analyzer SPS
      SPS11-10µSPSx-1µ High LoadSPSx-1µ AdvanceSPS23-100n

      Moisture Sorption Analyzer Vsorp
      Vsorp BasicVsorp PlusVsorp Enhanced

      Disposables, Accessories and Hardware Options
      Option Camera
      Option Raman Spectroscopy
      Permeability Kit 5 samples
      Permeability Kit 11 samples
      Permeability Kit Inverted Wet Cup
      Large Objects Kit
      Membrane Dryer
      Reference Material for Humidity Validation

      Optional Software Packages
      DVS Analysis Software
      21 CFR Part 11 compliant software package

      Humidity Generator MHG32
      MHG32Option TCOption 1000ml/min

      Humidity Generator MHG100
      MHG100

      Powder Conditioner
      Powder Conditioner

      Ms.Mr.MxProf.Dr.

      * I have read and accepted the privacy policy.

      (* required fields)

      By clicking on the button "Submit", you are authorizing ProUmid GmbH & Co. KG to make use of the entered data in the contact form for contacting you so that we may answer your request and to provide you with information on the requested products and services. We will not pass your personal data to third parties. You will be able to unsubscribe from all of our e-mails at any time. Please have a look at our privacy policy for more information on how we use your data.

        Please send me a quotation for

        item no.

        Description

        quantity

        package size

        100913

        sample dishes 18 mm

        box (100 pieces)

        100914

        sample dishes 33 mm

        box (100 pieces)

        100486

        sample dishes 50 mm

        box (100 pieces)

        100916

        sample dishes 86 mm

        box (100 pieces)

        101655

        distance pieces

        set (12 pieces)

        101867

        mesh cover 50 mm

        set (12 pieces)

        101596

        PTFE inserts

        set (12 pieces)

        100485

        secondary sample dishes 38 mm

        box (10 pieces)

        100910

        sample carousel 5 sample positions

        piece

        100908

        sample carousel 11 sample positions

        piece

        100909

        sample carousel 23 sample positions

        piece

        Ms.Mr.MxProf.Dr.

        * I have read and accepted the privacy policy.

        (* required fields)

        By clicking on the button "Submit", you are authorizing ProUmid GmbH & Co. KG to make use of the entered data in the contact form for contacting you so that we may answer your request and to provide you with information on the requested products and services. We will not pass your personal data to third parties. You will be able to unsubscribe from all of our e-mails at any time. Please have a look at our privacy policy for more information on how we use your data.

          Please send me the following Application Note / White paper

          Application Notes

          Food

          AN_20-01 Amorphous lactose in food
          AN_20-02 Amorphous fractions in sucrose and sucrose containing model food systems
          AN_20-03 Deliquescence and deliquescence lowering of food ingredients and blends
          AN_20-04 Dehydration behavior of bread crumb and crust

          Pharma

          AN_20-05 Amorphous lactose in the pharmaceutical industry
          AN_20-06 Hydrate formation of L-lysine HCl
          AN_20-09 Hydrate formation of creatine

          Building materials

          AN_20-07 Water vapor sorption of plaster
          AN_24-02 Water Vapor Permeability of Barrier Foils

          Permeability of Packaging material and Foils

          AN_12-01 Water vapor permeability of films
          AN_15-01 Water vapor sorption of product packages
          AN_24-01 Inverted-Wet-Cup: Water vapor permeability of packaging materials

          DVS Basics

          AN_17-01 Speed-vs-Accuracy
          AN_18-01 Humidity sensor calibration
          AN_18-02 MCC Reference-Certification
          AN_18-03 MCC Reference-Humidity Validation

          PowderConditioner: Moisture Equilibration

          AN_25-01 Powder Conditioner: Moisture Equilibration of Powders

          White Papers

          Universal

          WP_20-01 Amorphous content lactose

          Food

          WP_20-02 Amorphous fractions in sucrose and sucrose containing model food systems
          WP_20-03 Deliquescence and deliquescence lowering of food ingredients and blends

          Pharma

          WP_20-06 Hydrate formation of L-lysine HCl

          Permeability of Packaging material and Foils

          WP_24-03 Shelf-life calculation of dry food products

          DVS Basics

          WP_21-01 Moisture Sorption Isotherms

          DVS- Add ons
          WP_24-04 DVS in combination with in-line Raman measurements

          Your Contact data

          Ms.Mr.MxProf.Dr.

          * I have read and accepted the privacy policy.

          (* required fields)

          By clicking on the button "Submit", you are authorizing ProUmid GmbH & Co. KG to make use of the entered data in the contact form for contacting you so that we may answer your request and to provide you with information on the requested products and services. We will not pass your personal data to third parties. You will be able to unsubscribe from all of our e-mails at any time. Please have a look at our privacy policy for more information on how we use your data.

            Technical Support

            Ms.Mr.MxProf.Dr.

            * I have read and accepted the privacy policy.

            (* required fields)

            By clicking on the button "Submit", you are authorizing ProUmid GmbH & Co. KG to make use of the entered data in the contact form for contacting you so that we may answer your request and to provide you with information on the requested products and services. We will not pass your personal data to third parties. You will be able to unsubscribe from all of our e-mails at any time. Please have a look at our privacy policy for more information on how we use your data.

              Service visit

              Ms.Mr.MxProf.Dr.

              * I have read and accepted the privacy policy.

              (* required fields)

              By clicking on the button "Submit", you are authorizing ProUmid GmbH & Co. KG to make use of the entered data in the contact form for contacting you so that we may answer your request and to provide you with information on the requested products and services. We will not pass your personal data to third parties. You will be able to unsubscribe from all of our e-mails at any time. Please have a look at our privacy policy for more information on how we use your data.

                Please send me

                Quotation for

                Contract Analysis: Dynamic Vapor Sorption (DVS)
                Sorptions Isotherm, Sorptions KineticsPermeability, Water Vapor Transmission Rate (WVTR) of foils or packaging materials

                Ms.Mr.MxProf.Dr.

                * I have read and accepted the privacy policy.

                (* required fields)

                By clicking on the button "Submit", you are authorizing ProUmid GmbH & Co. KG to make use of the entered data in the contact form for contacting you so that we may answer your request and to provide you with information on the requested products and services. We will not pass your personal data to third parties. You will be able to unsubscribe from all of our e-mails at any time. Please have a look at our privacy policy for more information on how we use your data.

                MSAS Registration

                  The 12th MSAS will be held from 26th to 27th April 2023 in Ulm, Germany.

                  I want to register for the 12th Moisture Sorption Analysis Seminar - MSAS

                  Ms.Mr.MxProf.Dr.

                  Payment method
                  Payment after receipt of the invoice

                  Details on the seminar venue, seminar program, hotel accomodation and conference dinner can be found on the ProUmid website.

                  * I have read and accepted the privacy policy.

                  (* required fields)

                  By clicking on the button "Submit", you are authorizing ProUmid GmbH & Co. KG to make use of the entered data in the contact form for contacting you so that we may register you for the MSAS.