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First, I would like to thank you for the great job in fixing Rohrer Amplifier on time. I have tested the amplifier and it demonstrated an amazing performance in both Voltage-mode and current-mode. Its output THD was better than 0.05% and DC offset was less than 0.01, which is even less than the documented values in the manual.
Dr. Amr Said
Research Associate, Measurement Science and Standards
National Research Council Canada / Government of Canada
1200 Montreal Road / Ottawa, Ontario K1A 0R6 / Canada
"We are very satisfied with the power amplifier. It looks good, is easy to use and our application also works as expected. High praise to you and all employees involved. .....
Thank you and greetings from Düsseldorf "
Josef K., TRW
“I would like to thank you for the prompt processing of my request. Everything is going well with the measuring amplifiers."
S. Sch., Teaching and research area materials science RWTH - Aachen
"... I never doubted for a moment that you could meet our requirements".
Dr. F., PTB
"... we have prepared everything for use ..."
Head of an international test center for an automotive supplier
"After we have had the best experience with the 3 existing amplifiers from your company, we would like to order a suitable amplifier for a larger H coil. The amplifier should run in current-controlled mode and we would then adapt the H coil as usual send to you. "
"With a few isolation amplifiers of the TV811A type, an offset shows (only) in the smallest measuring range. Could you please name the potentiometer with which I can carry out the offset correction?
Otherwise, these amplifiers still work perfectly. "
F. D., Rheinmetall
Highest precision, reliability and stability characterize the measuring devices and systems produced by Rohrer GmbH in Munich. Usually, the company manufactures the measuring and system technology in single pieces or in very small quantities, designed according to the special wishes and requirements of its customers worldwide.
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Start into the Chinese market, after we already have important contacts.
The company Rohrer Mess- & Systemtechnik develops and produces in Munich a sophisticated program of measurement devices and systems for the highest demands. We work hand in hand with our customers and suppliers to solve complex tasks.
We are partners of the research institutions of industry - universities - universities. We have successfully met this high standard for over 30 years. The diverse areas of application range from the automotive industry through aerospace engineering to chemistry and energy supply.
HERO®power, that is any current amplifier up to 20kA ++
Measure and control locally and remotely via a standard web browser for setup and operation.
HERO®power: Delivers 4-quadrant symmetrical / 2-quadrant asymmetrical and meets the standard requirements for the automotive industry LV124+LV148, ISO, IEC, VW, BMW, Ford, Daimler, Bosch, Continental, Schäffler and others.
HERO®power realizes tasks such as
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