Inclinometer Amplifier NV8a

NV8a
Signal Amplifier / filtering electronics including an 0…. 5 Volt DC output

Features

very small size for OEM jobs
can work directly on a non-stabilized power supply from +8….30VDC
internal zero setting of sensor off-set
internal protection against incorrect polarity
output is surge-protected
high-stability 5V supply to the sensor
protection against wrong sensor wiring
zero and span adjustment by means of high quality potentiometers
electronics parts hermetically enclosed
can optionally be supplied to order with programmable 4^th order low-pass filter
optional also with high-pas filter
custom made connectors also possible

Description

The NV8a is used for excitation, for filtering and for standardization 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 PC’s 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.

Application

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-stabilized 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.

Technical Data

Dimensions	Please se drawing
Supply voltage	+8...+30Volt (protected against polarity reversal to -70Volt)
Current consumption without Sensor	app.10mA
Working temperature	-40...+85°C
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	30µV_s.s.
Signal audio-frequency noise at standard sensor	app.80dB
Frequency range	0...10Hz, 0...200Hz, 0...2kHz + others as custom wishes
Electrical connections	Pin 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 very high accuracy) used as voltage

reference to connected electronics, e.g. OPV or ADC electronics.

Print out data ! Nv8a.pdf

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Last modified: november 14, 2022