The experts for the generation of test gases!

Since 1997, we have been developing and producing the HovaCAL® calibration gas generators for the generation of gas vapor mixtures.

Our expertise lies in the dynamic generation of a wide range of test gases for a variety of applications.

All devices can be customized to specific requirements. Custom-made special designs for individual applications are one of our strengths.

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HovaCAL® N MF

The HovaCAL® N MF is a compact calibration gas generator for all gaseous components used in emission measurement technology and is the successor to the proven HovaCAL® digital. It consists of a supply unit with dosing devices for liquid and gases and an evaporator.

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HovaGAS N

The HovaGAS N is a highly variable gas mixer for the dynamic mixing and dilution of test gases and the successor to the proven HovaGAS digital.

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HovaPOR

The HovaPOR series of universal evaporators generates pulsation-free vapors and gas-vapor mixtures from a wide range of fluids. Depending on the requirements, different evaporator types and evaporation methods are used.

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Core competencies

Our devices are used wherever precise calibration gases are needed. Thanks to the dynamic evaporation of liquid, we are able to precisely generate calibration gases of a wide range of components in different concentrations.

Thanks to the continuous development and improvement of our devices, we are now able to penetrate into the trace gas range (ppb to ppt) with the HovaCAL® VOC device series.

Our extensive product range offers many standard solutions, but individual requirements are often specific. We are happy to adapt our products to your individual applications.

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Dosing

At the beginning of the production of a precise calibration gas is the dosing of liquid and gas. Depending on the type of fluid, the appropriate dosing method is selected: volumetric, gravimetric or thermal. Traceability to a primary method is always crucial.

Evaporating

The evaporation must be complete and uniform. If the evaporation is incomplete, the vapor concentration would be too low. If the evaporation is uneven, the concentration over time would also be uneven. Our evaporation systems are precisely tailored to these requirements.

Calibrating

Ideally, gas analyzers or sensors should be checked with a test gas that is similar to the sample gas. In particular, if moisture is a significant component of the sample gas, it must not be neglected during the check. This is achieved by dosing and evaporating water or aqueous solutions with the HovaCAL®.

Fields of application

Our devices are used wherever precise calibration gases are required. Thanks to the dynamic evaporation of liquid, we are able to precisely generate calibration gases of a wide range of components in different concentrations. You can find a selection of the many applications here.

Waste Incineration

Emission monitoring / CEMS

Immission monitoring

MS / IMS

Hydrogen

Fuel cell development

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Your application is not listed or you are unsure? We are happy to adapt our products to your individual application!

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All application areas

We lead the market!

As specialists in our field, we develop and manufacture precision devices for generating gas-vapor mixtures for all areas of gas analysis.

Our HovaCAL® calibration gas generators are constantly setting new standards and are used worldwide to ensure a clean environment and a resource-efficient energy supply.

To achieve this, we combine our globally unique evaporator systems with various liquid and gas dosing methods. This enables our devices to evaporate a wide range of liquids over a very wide dosing range.

How do we do it? With our well-coordinated team, with shared motivation and enthusiasm for the highest quality and innovative technologies.

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Services

We offer inspections and recalibrations for our devices. This contributes significantly to the usability and longevity of the devices.

In addition, a variety of spare parts developed specifically for our devices is available. We offer customized calibration solutions for the operation of our devices.

Maintenance

Regular maintenance of the HovaCAL^®, HovaPOR and HovaGAS devices is recommended to ensure the long-term precision of the gas and gas-vapor mixtures. During these inspections, we check the functionality, clean any surfaces that come into contact with gas and vapor, and adjust the built-in sensors and measuring devices. Please make an appointment with us!

Spare parts

All wear parts for the HovaCAL® calibration gas generators have been developed and tested specifically for these devices.

Calibration solutions

All calibration solutions are specially formulated for the HovaCAL® calibration gas generators, and are tested and verified.

We also offer solutions that are not listed – e.g. formaldehyde, alcohols, organic acids, hydrogen peroxide, hydrogen bromide; almost all components that can be produced and evaporated as aqueous solutions.

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