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For more than 60 years, GfG has been committed to protecting people, industrial facilities and the environment by developing and manufacturing gas detection systems. With an extensive range of portable gas detectors and fixed gas detection systems, GfG can supply you with a selection of products for many applications and industries. Our scope also includes on-site service and advanced training courses.


What distinguishes us from other manufacturers

We are specialists for gas detection solutions, not generalists in safety. No one can be the best at everything, but if you focus on one thing, you can achieve excellence. We work hard to provide you with the best gas detection equipment available, so you can focus on your task without having to worry about the risks that gases can pose. Because of that we invest more heavily in research and development than any other company. Approximately 13% of our annual turnover is reinvested in basic research and the development of new sensors and devices.


A “never say no” approach

This includes finding solutions for customers whose requirements are not met by “off the shelf” products. We take pride in our longstanding cooperation with the Singapore Civil Defence Force (SCDF), for example. For many years now, they have put their trust in GfG’s portable devices, which we optimized to adapt to the Singaporean climate and fulfill the special requirements for integration into the SCDF communication network.

The modern device design allows individual settings for many measuring and control tasks in industry and municipal areas, such as swimming pools, neutralisation plants, refrigeration plants, waste water plants, water treatment plants, etc. The compact design (short installation depth) is a major advantage for use in control panel installations or wall-mounted housings. Thanks to modern and space-saving technology, the VARIOCON is a universally applicable measuring and control device.

Measurement display and operation
The VARIOCON measuring amplifier always displays the currently measured value. Thanks to the clear and large display, the measured value can be read well and clearly even from greater distances. For indication of the measured variable and the states of the control and alarm relays, further LEDs are clearly visible on the front of the unit. The front gives the operator/user an immediate and clear overview of the functions. The respective function (calibration, manual/auto mode, programme levels) is selected and set by means of 5 push-buttons.

Matched system components
The VARIOCON system is a combination of optimally matched components. Measuring amplifiers, controllers, measuring electrodes and fittings are user-friendly and practice-oriented. You will find a selection of fittings at the bottom of this page.

Flexible adjustable
A total of 4 relays are available for controlling pumps, valves and other units. For example, the precise dosing of chemicals can be controlled. In addition, 2 analogue outputs (4 to 20 mA) ensure reliable transmission of the measured values for further evaluations. The controller has a wide range of control options so that no additional controllers are required. Relays can be assigned the following functions: ON/ OFF; over/under; PWM controller; PFM controller. mA outputs: linear range, continuous controller.

Temperature fluctuations
For pH measurements in media with strongly fluctuating temperatures, measuring fittings with temperature compensation are used. The VARIOCON is already equipped for this application. All that is needed is to connect an NTC temperature sensor to the VARIOCON. The compensation is activated via programming and is then carried out automatically. Even large temperature fluctuations in the measured medium no longer have any influence on the measurement results.

Would you like to know more?

Our team can help you with any product information, quotes, or any general questions you may have about the product.

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