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| NV8A Filtering signal conditioner for sensor signal matching with an asymmetric 0...5V output voltage Features * * * * * * low noise and low drift no stabilized supply voltage necessary integrated reverse polarity protection outputs are short circuit proof highly stable supply voltage for sensor operation protection against reverse polarity of sensor connection * * * * * zero position and gain adjustable via potentiometers electronic components hermetically sealed optionally frequency programmable, active th 4 order low pass filter optional high pass filter different connector options Description The NV8A amplifies, filters and normalizes the output signals of SEIKA sensors. The asymmetric output signal enables unproblematic, subsequent signal processing with standard measuring equipment, such as oscilloscopes, transient recorders, A/D converters, multimeters, etc., operating with this asymmetric signal level. The NV8A requires a non-stabilized supply voltage in the range of 8...30 Volt. The NV8A provides a highly stable 5V voltage with short circuit current limitation as a sensor supply voltage. 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 NV8A has its application anywhere a SEIKA sensor is, without great expenditures and under optimal compatibility, to be connected to application specific measuring equipment and subsequent adjustment of amplification and zero position are necessary. The use of an asymmetric output voltage requires minimal electronics for further signal processing. Technical Specifications Dimensions Supply voltage Current drawn excluding sensor Operating temperature Internally generated sensor supply voltage Temperature drift of sensor supply voltage Maximum output voltage range Output signal range Zero offset range Output impedance Signal-to-noise ratio Signal-to-noise ratio with standard sensors see dimension drawing +8...+30 Volt (reverse polarity protected to -70Volt) approx.10 mA -40...+85C +5,00 Volt 20ppm / Kelvin +0,05 ... +4,95 Volt 2,52 Volt 2,4...2,6 Volt (larger ranges, e.g. for B1 in Z direction on request) approx.100 30Vs.s. approx. 80dB SEIKA Mikrosystemtechnik GmbH * Ellharter Str.10 * D-87435 Kempten * Tel: 0831-25532 Fax: 0831-25534 Tope Co., Ltd. Tel: (02) 8228-0658 Fax: (02) 8228-0659 httrp://www.sensor.com.tw e-mail: tope@ms1.hinet.net (7/2001) - NV 5 - NV8A Frequency range Electrical connections 0...10Hz, 0...200Hz, 0...2kHz, custom ranges on request pin connector 2,54mm, lenght 5,7mm, O 0,63mm gold-plated soldering pads optional Dimensions 50 10.22 5.5 25 6.185 2.54 2.54 2.54 27.94 2.54 2.54 1.12 Connections gain regulator zero regulator supply voltage +8...30 Volt GND 5.4 output voltage 0.5...4.5 Volt GND +5 Volt (max. 10mA) SENSOR sensor transmission line GND (common earth) Attention! Do not short circuit the supply voltage with the output. No problem with GND - all at same potential, even in mulitaxial systems! The sensor supply voltage (+5V, max 10mA) can/should (because of the high accuracy) be used as reference voltage for subsequent electronics, e.g. OPV or ADC. SEIKA Mikrosystemtechnik GmbH * Ellharter Str.10 * D-87435 Kempten * Tel: 0831-25532 Fax: 0831-25534 Tope Co., Ltd. Tel: (02) 8228-0658 Fax: (02) 8228-0659 httrp://www.sensor.com.tw e-mail: tope@ms1.hinet.net (7/2001) - NV 6 - |
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