Measuring amplifier overview
ME-Meßsysteme GmbH offers a very wide range of measuring amplifiers. The different series GSV-1, GSV-2... differ in the technology used (e.g. “purely analog”, “16-bit”, “24-bit”, “multi-channel”...) and in the available equipment (top-hat rail housing, IP67 aluminum housing, display, USB, CANbus, RS232, voltage output, current output, ...).
Long-term availability guarantee
Most products are available for decades: The GSV-1 series is unique in its combination of properties (“purely analog measuring chain”, automatic zero adjustment via control line”, ‘high dynamics’, ‘low noise amplitude’) and is therefore integrated in many series applications worldwide. Over the decades, we have ensured “downward compatibility”, relying on branded products for processors and electronic components, so that a “GSV-1” or “GSV-2” is still leading today.
GSV, what does that mean?
DC voltage amplifier (for sensors with strain gages).
We rely on DC voltage measuring amplifiers as opposed to carrier frequency measuring amplifiers due to their higher dynamic range (i.e. higher frequency bandwidth), simpler design, insensitivity to cable movements and lower costs. Particularly with miniature sensors, changes in inductance and capacitance in the supply lines can prove to be a problem when using frequency or pulse excitation measuring amplifiers. Special cables with multiple shielding are not always suitable for industrial use.
We achieve zero signal stability and in particular the noise amplitude by selecting components of the same quality as a carrier frequency amplifier.
GSV-xx, which amplifier can do what?
in a maximum of 4 sentences...without formulas, without numbers
The GSV-1 series is characterized by completely analogue signal processing. This means that high bandwidths of 250Hz, 2.5kHz or 10kHz are possible. Single-channel versions are available as a printed circuit board (GSV-1L), in a top-hat rail housing (GSV-1H), in an aluminum housing (GSV-1A), and multi-channel versions in an aluminum housing (GSV-1A4, GSV-1A8). Can be used for compression and tension measurements and 3-axis force sensors due to the ±10V output. An automatic zero-setting function is available.
The GSV-2 series with “24-bit sigma-delta” technology was primarily developed for use as a single-channel measuring amplifier via RS232, USB, CANbus, display and SD card. In addition, a “real” logging output from the GSV-1 technology is available, e.g. for monitoring purposes. The two threshold value transmitters can only be configured via software or via a keyboard menu (for GSV-2FSD-DI, GSV-2TSD-DI).
The different housing versions are suitable for various applications, e.g. IP67 aluminum for field use, GSV-2TSD-DI for laboratory use or GSV-2MSD-DI for robust outdoor use by service technicians.
The GSV-2 also has an analog output. This analog output is characterized by completely analog signal processing. Therefore, the output signal is not scalable depending on the sensor signal. A zero setting function is available for the analog output. Only two variants can be set: 2mV/V at the input corresponds to 5V at the analog output, or 3.5 mV/V at the input corresponds to 5V at the analog output. Alternatively, devices with 10V analog output are also available (order option). The low-pass filter of the analog output adjusts in 3 steps depending on the set data frequency: 2.5Hz, or 260Hz, or 1.7 kHz.
The GSV-3 series was developed with 16-bit technology, preferably for use with a USB port, without an external power supply, with galvanic isolation, in a handy metal housing for your pocket, as a 1- or 2-channel device. It incorporates the technology of the GSV-1L for zero balancing before the A/D converter, so that the 16 bits are utilized 100%, despite a 100% reserve for zero balancing. Due to the small dimensions of the “basic module” GSV-3LS, the measuring amplifier is also known for integration into series products and for special tasks, such as wireless measured value transmission with Bluetooth (GSV-3BT) or for a variant with CANbus (GSV-3CAN).
The GSV-4 series has 4 channels in 24-bit sigma-delta technology, although there is only space for 16 bits per measurement channel in the data frame. This benefits a high data throughput of up to 4x 500 S/s via USB interface (GSV-4USB) or via UART interface with further processing via Bluetooth (GSV-4BT). In contrast to the GSV-1, GSV-2 and GSV-3, the GSV-4 already has configurable inputs for various sensors, such as sensors with strain gauges (quarter, half and full bridge), active voltage input for potentiometric sensors, etc.
voltage input for potentiometric displacement sensors or other active sensors, as well as for temperature sensors PT1000 and thermocouple type K.