Filtering signal conditioner for sensor signal matching to a 4...20mA, 2-wire interface
The NV6a amplifies,
filters and normalizes the output signals of SEIKA sensors. The
symmetrical output signal enables unproblematic subsequent signal
processing on the basis of 4...20mA current loop technology.
The NV6a does not require a separate supply voltage, as the internal operating voltage feeds off the current loop. The NV6a furthermore provides a highly stable 5V sensor supply voltage with short circuit current limitation.
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.
The NV6a has its
application anywhere a SEIKA sensor is, without much expenditure
and under optimal compatibility, to be connected to measuring
equipment operating on 4...20mA, 2-wire current loop basis and
subsequent adjustment of amplification and zero position are
Typical applications are the coupling with memory programmable control systems and the signal transmission over long distances with little transmission line setup.
|Terminal voltage||10V ... 30V (reverse polarity protected to -70Volt)|
|Minimum loop current excluding sensor||2.5mA ... 3.5mA|
|Maximum loop current||22mA ... 26mA|
|Operating temperature||-40°C ... +85°C|
|Internally generated sensor supply voltage||+5.00 Volt|
|Temperature drift of sensor supply voltage||20 ppm/Kelvin|
|Maximum allowable sensor current||approx. 2mA|
|Signal loop current range||4...20mA|
|Compensation range of sensor offset voltage US_offset||2.3V ... 2.7V (larger ranges, e.g. for B1 in Z direction on request)|
|Amplification range with respect to a loop current of 12±8mA||US_offset±100mV, US_offset±300mV (on request)|
|Maximum load resistance at 24V supply voltage||500 Ohm|
|Signal-to-noise ratio with standard sensors||> 65dB|
|Frequency range||0...10Hz, 0...200Hz, 0...1kHz, custom ranges on request|
connector 2.54mm, length 5.7mm, Ø 0.63mm gold-plated
soldering pads optional
Dimensions (in mm)
Attention! Sensor GND and NV6a GND (both at
same potential) must be isolated from current loop! In a
multiaxial arrangement (e.g. SW3), all sensor grounds
must be isolated from each other. When ordering, look for
"Sensor internally insulated, compatible with NV6a"!
SEIKA Mikrosystemtechnik GmbH - Ellharter Strasse 10 - 87435 Kempten - Germany - EMail: email@example.com