NV4a

NV4a
Filtering signal conditioner for sensor signal matching with symmetrical +/- 4 V voltage output

Features

low noise and low drift
no regulated supply voltage necessary
internal generation of negative operating voltage
integrated reverse polarity protection
outputs are short circuit proof
highly stable voltage supply for operation of a sensor
protection against reverse sensor polarity
zero position and gain adjustable via potentiometers
electronic components hermetically sealed
optionally frequency programmable, active 5th order low pass filter
optional high pass filter
different connector options

Description

The NV4a amplifies, filters and normalizes the output signals of SEIKA sensors. The symmetrical output signal enables unproblematic subsequent signal processing with standard measuring instruments such as oscilloscopes, transient recorders, A/D converters, multimeters, etc.
Multiple internal switching variants allow for optimal adaptation of signal processing parameters, such as settling time, filter cut-off frequencies and amplification and zero point adjustment, to the measuring task.

Application

The NV4a has its application anywhere a SEIKA sensor is, without much expenditure and under optimal compatibility, to be connected to application specific measuring equipment with optimal matching conditions and subsequent adjustments to amplification and zero voltage are necessary.

Technical Specifications

Dimensions	see dimension drawing
Supply voltage	9V ... 30V (polarity protected up to -70Volt)
Current drawn excluding sensors	approx. 5mA
Operating temperature	0...70°C
Internally generated sensor supply voltage	5.00 Volt
Temperature drift of sensor supply voltage	20ppm / Kelvin
Output signal range	±3.5 Volt
Offset adjust range	2.4V ... 2.6V (larger ranges on request)
Output impedance	approx. 100 Ohm
Signal-to-noise ratio	30µVs.s.
Signal-to-noise ratio with standard sensors	approx. 80dB
Frequency range	0...10Hz, 0...200Hz, 0...2kHz, custom ranges on request
Electrical connections	pin connector 2.54mm, length 5.7mm, Ø 0.63mm gold-plated; solder pads optional

Dimensions (in mm)

Connections

Attention! Do not short circuit the supply voltage with the output.
The negative operating voltage for the symmetrical output voltage is internally generated from the only positive supply voltage!

SEIKA front page

print version (pdf)

SEIKA Mikrosystemtechnik GmbH - Söllerweg1- D 87487 Wiggensbach - email: seika@seika.de - Tel.+49 8370 9290070 - FAX:+49 8370 9290079

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