The NV8a is used for excitation, for filtering and for standardisation of the different of SEIKA sensors output signals
The asymmetrical output signal permits a problem-free signal transfer to measurement equipment as an oscilloscope, transient recorders, AD-cards in PCs or to other OEM equipment.
Even with a high range of changes at the power supply to the unit, the NV8a will act very stable both for off-setting of the sensors zero point and on supplying an stable 0 5VDC output linear to the sensors working range.
The NV8a is used everywhere where a SEIKA sensor should be combined with a user-specific demand for high voltage output / special wishes for filtering of the sensor signal, plus where a non-stabilised 8 30VDC supply can be an advantage for the system.
For 4 20mA output please have a look at NV6a
For +/-4VDC output the NV4a is the correct solution.
|Dimensions||Please se drawing|
|Supply voltage||+8...+30Volt (protected against polarity reversal to -70Volt)|
|Current consumption without Sensor||app.10mA|
|Sensor supply||+5,00 Volt|
|Sensor supply-temp. drift||20ppm / Kelvin|
|Max. Output voltage||2,5 ±2 Volt|
|Active measuring range equal to sensor range||±+0,05 +4,95 Volt|
|Off-set range||2,4 ...2,6 Volt (larger for e.g. B1 in Z-direction)|
|Output impedance||app.100 W|
|Noise value on power supply||30µVs.s.|
|Signal audio-frequency noise at standard sensor||app.80dB|
|Frequency range||0...10Hz, 0...200Hz, 0...2kHz + others as custom wishes|
connector 2,54mm, length 5,7mm, Ø 0,63mm gold plated
optional soldering pads
Caution !Do not short-circuit the operating voltage(8 to 30V) with output signal
No problems with GND all on the same Potential, also in case of increased axes systems! The sensor operating voltage is +5V/max.10mA can also be (because of the ver high accuracy) used as voltage
reference to connected electronics, e.g. OPV or ADC electronics.
Print out nv8a.pdf
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Last modified: januar 08, 2015