If you need an interface between your sensor and your data-acquisition card:
We've got it or we'll make it for you. Our signal condition product lines contain
a broad range of interface modules and instruments which will produce a normalised
voltage output (± 10 Volts, ± 5 Volts, 0-10 Volts) or 4-20 mA from any source signal.
Electronic filters
are used when the frequency spectrum or differential phase properties of dynamic signals
are analysed, or need bandwidth limitation before they are digitised. Signals often being filtered are :
Vibration, turbulence, noise, and other physical wave variables. Frequency Devices Inc.
design and manufacture high precision PCB filter modules, subassemblies, and instruments.
| Filter modules | | Filter instruments & amplifiers |
|---|
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| for OEM customers who design signal processing electronics as part of larger systems.
The modules housed in DIP packages are suitable for use as engineered and calibrated components.
These are available in fixed and programmable low-pass, high-pass, band-pass, and band-stop
(notch) versions with slope and characteristic of choice. |
| form a ready to use laboratory instrument housed in bench top enclosures
or rack systems. The Kemo model VBF8 has manual controls for adjusting cutoff frequency.
The cutoff frequency (highpass or lowpass) is adjustable from 0.01 Hz to 99.9 kHz. Gain *1 or *10. |
| Eurias assembles the filter modules into different enclosures.
For dedicated sensors and applications like:
- hydrophones
- conform SAE5211
- accelerometers with IEPE
- adjustable gain up to 60dB
- with matched channels
|
Isolation amplifiers are required when
signals are to be measured which cannot be connected to the measurement systems' earth point,
either for ground loop elimination, or because the signal source has a
potential with respect to ground. A typical example is a
thermocouple connected on top of a heating element, because of
that the thermocouple signal contains a lot of noise and 50 Hz
line interference. If it also electrically connected to the
heating element, the common mode voltage on the thermocouple must
be eliminated before it can be measured with a grounded
instrument. Long cable lengths may also be a risk factor when
measuring low level signals such as thermocouples. The cables
pick up common mode voltage induced by electrical and magnetic
fields which should be isolated from the measurement system
having a common or grounded earth. 5B modules are used world wide
for industrial signal conditioning.
We produce custom and multi-channel isolation amplifiers and signal conditioners in modular 19" rack systems or DIN-rail
mounted modules.
Impulse converters are
used for data-acquisition from sensors which provide one digital
pulse signal or a two phase (A/B) pulse signal. These source
signals may be used for event counting, accurate frequency
measurements, instant period time, speed, distance and angle
measurements. The most common devices are frequency to voltage
converters.
One of the specialty products is the converter which measures the
instant period time of a continguous impulse transducer. It has
the best possible response time for frequency and speed
measurement. The settling time of a period time measurement
module is just over one single period of the input pulse signal.
