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low noise and low drift
2-wire connection - power supplied by current loop
loop current limitation
integrated reverse polarity protection
highly stable sensor supply voltage
protection against reverse polarity of sensor connection
zero position and gain adjustable via potentiometers
electronic components hermetically sealed
optionally frequency programmable, active 3rd order low pass filter
optional high pass filter
different connector options
Description
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.
Application
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 necessary.
Typical applications are the coupling with memory programmable control systems and the signal transmission over long distances with little transmission line setup.
Technical Specifications
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
Zero current 12mA
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 30μVs.s.
Signal-to-noise ratio with standard sensors > 65dB
Frequency range 0...10Hz, 0...200Hz, 0...1kHz, custom ranges on request
Electrical connections pin connector 2.54mm, length 5.7mm, ? 0.63mm gold-plated
soldering pads optional
NV8a
Filtering signal conditioner for sensor signal matching with an asymmetric 0...5V output voltage
SEIKA front page
print version (pdf)
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 4th 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 9...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
Supply voltage +9...+30 Volt (reverse polarity protected to -70Volt)
Current drawn excluding sensor approx. 5mA
Operating temperature -40°C ... +85°C
Internally generated sensor supply voltage 5.00 Volt
Temperature drift of sensor supply voltage 20ppm / Kelvin
Maximum output voltage range 0.05V ... 4.95V
Output signal range (2.5±2)Volt
Zero offset range 2.4V ... 2.6V (larger ranges, e.g. for B1 in Z direction 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, lenght 5.7mm, ? 0.63mm gold-plated
soldering pads optional
SW3
Sensor cube for multiaxial arrangement of SEIKA accelerometers and/or SEIKA inclinometers
SEIKA front page
print version (pdf)
Description
The SW3 can accommodate SEIKA sensors for measurements in up to three directions. The SEIKA inclinometers N3, N4, NB3 and all SEIKA accelerometers can be integrated in any combination according to customer's specifications.
Application
The interface converter connects any SEIKA sensor with RS485 data output interface to the RS232 port of a computer.
Technical Specifications
Material nickel-plated brass
Weight excluding sensors 78 grams
Weight including sensors approx. 145 grams
Electrical connection cable or single wires as required
SBBS1, SBBB1, SBBW1
Fixing plates from stainless steel for sensor boxes
[+]
SEIKA front page
print version (pdf)
Application
The fixing plates are used for the simplified fixing and positioning of the sensor boxes SB.. at the point of measurement, without the sensor box must be opened for this purpose.
Technical Specifications
Material stainless steel
Weight SBBS1, SBBB1, SBBW1 without sensor box 102, 128, 272 grams
Weight accessorys (screws and tapped bushings) approx. 10 grams
Dimensions see dimension drawings
Accessorys (screws and tapped bushings) including
Dimensions SBBS1 (in mm)
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上海滄燦自動化科技有限公司
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