Series CFA225-T

High Precision Measuring Amplifier Series CFA225-T:
Maximum Precision for your Static Testing and Calibration Technology

Zweikanal-Präzisionsmessverstärker der Serie CFA225-T - GTM

Best-in-class Strain Gauge Measuring Amplifier with Outstanding Precision of 10 ppm

The new CFA225-T two-channel precision measuring amplifier with a precision class of 0.001 or 10 ppm is ideal for high-precision measurements with strain gauge full bridge-based force sensors and torque transducers. The measuring amplifiers of the CFA225-T series in a desktop housing are among the most precise strain gauge measuring amplifiers in the world, which makes them suitable for high-end stationary measuring, testing and calibration of strain gauge-based sensors.

The precision measuring amplifier CFA225-T supports and facilitates on-site operation in testing and calibration labs with diverse settings and configuration options, a user-friendly and intuitive key-based user interface, and an integrated touch display.

The two-channel high-precision measuring amplifier in a robust metal housing with carrying handles on the front features outstanding performance parameters, such as a maximum resolution of ±2,000,000, high long-term stability of <±10 ppm/a due to an internal inductive divider, and a seven-digit display with six decimal places. The carrier frequency bridge supply voltage of 5V/225 Hz offers the lowest uncertainty of measurement in traceability to national standards available today. Of course, strain gauge transducers are connected by means of 6 circuit technology. 

The precision DMS measuring amplifier CFA225-T is used both by sensor manufacturers who have to calibrate their own force or torque transducers, and in calibration labs, National Metrological Institutes (NMI) and technical universities.


+ Key Facts

  • Strain gauge precision measuring amplifier for static applications
  • Accuracy class: 0.001 or 10 ppm
  • Number of measuring channels: 2 x strain gauge full bridge 180 Ω – 2 kΩ
  • Bridge supply voltage: 5 V/225Hz CF
  • Interfaces: serial RS232, USB

+ Advantages

  • 10 ppm – high-precision and stable measurements
  • Flexible use via 2 amplifier channels, e.g. for comparing measurements of two strain gauge transducers with maximum precision
  • Large display with intuitive on-site control via touch display
  • Extensive functions such as filter settings and scaling modes 
  • Easy connection via RS232 or USB interface


  • High-quality measuring cables available as accessories
  • DAkkS certificate available on request
  • Factory calibration also available as measuring chain

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Force measurement technology, force transducers, load cells and force transfer standards from GTM define standards when it comes to the correct measurement of forces of all sizes. Force transducers from GTM are considered the benchmark for precision and technology.


Torque Transducer

We are your partner for high precision non-rotating torque measurement. Based on our many years of experience in strain gauge-based force measurement, we have developed high-precision torque transducers for non-rotating torque measurement, which are especially optimized for demanding metrological and industrial test bench applications.


Multi-Axis Transducers

GTM is your first address when it comes to reliable and innovative industrial multi-component measurement technology, whether standardized and application-optimized multi-axis sensors, multi-component measurement platforms, tire uniformity and torsion testing machines or wheel load sensors for the automotive industry.