Inclinometer Amplifier NV4a

NV4a
Signal Amplifier / filtering electronics unit with
+/-4 Volt DC output

Features

can work directly on a non-regulated power supply from +8….+30VDC
internal zero setting of sensor off-set
internal protection against incorrect polarity
output is surge-protected
internal voltage regulation to sensor
zero and span adjustment by means of high quality potentiometers
electronics parts hermetically enclosed
programmable low-pass filter optional
high-pass filter also available
custom made connectors also possible

Description

The NV4a is used for excitation, for filtering and for standardisation of the different of SEIKA sensors output signals.
The symmetrical output signal permits a problem-free signal transfer to measurement equipment as an oscilloscope AD-cards in PC’s or to other OEM equipment.

Even with large changes in the unit power supply, the NV4a will act very stable both for offsetting the sensors zero point and for supplying an stable +/-4 VDC output that is linear with the sensors working range.

Application
The NV4a 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 0..5VDC output, please have a look at NV8a

For 4..20mA output, the NV6a is the correct solution.

Technical Data

Dimensions	Please se drawing
Supply voltage	+8...+30Volt (protected against polarity reversal to -70Volt)
Current consumption without Sensor	approx.2mA
Working temperature	0...70°C
Sensor supply	+5,00 Volt
Sensor supply-temp. drift	20ppm /°C
Max. Output voltage	±4 Volt

Active measuring range equal to sensor range	±3,5 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 the outputs

The negative operating voltage of the symmetrical VDC output is generated from the positive one.

print out .pdf brochure on NV4a