The G-3080 module is used to demodulator the signal from a 5 or 6 wire LVDT
(LVDT = "Linear Variable Differential Transformer" or "Linear
Variable Displacement Transducer"...) sensors, for accurate displacement/position
measurement, at frequencies up to 20KHz. The board is using a special ratiometric
measurement circuit, which is insensitive to noise and Temp. drift problems,
common to other measurement techniques.
The module consists of a LVDT excitation and a LVDT demodulator circuitry which
together form a high speed displacement measurement system. With an appropriate
sensor it can measure displacement as small as 1 micron and at frequencies up
to 20 KHz.
The module is assembled from high linearity and low drift components, and operates
with most common LVDT sensors.
The amplifier can be operated by batteries and it's output signal can be transferred
to the data acquisition system via the AFL-500 Analog Fiber optic Link for complete
isolation of the system: AFL-500
Analog Fiber Optic Link
Specifications
Bandwidth
up to 20KHz
Primary to Secondary phase shift:
Excitation Voltage
Power Supply
Linearity
better than 0.05% of FS
Transducer null voltage:
Insensitive
Rejection
100ppm/dB
Voltage Range
±7V to ±18V
Gain Drift
50ppm/ºC of FS max
Transducer cable length:
up to 30m
Output Current
30mA RMS
Current (@ no load)
18mA
Offset Drift
50ppm/ºC of FS max
Output cable length:
up to 100m
Short Circuit Current
60mA
Temperature range
0-70ºC
Output
Unipolar or Bipolar
Excitation
Frequency Range
20-20000Hz (with component change)
LVDT sensor type
any 5 or 6 wire sensor
Excitation range:
3-20V RMS
Excitation Frequency T.C.
200ppm/ºC
Supply Voltage
±15V
Excitation T.C.
600ppm/ºC
THD
-50dB
Output Voltage
±11V
Block Diagram
For more information about our Amplifiers and Signal Conditioner products , please click here.
The G-3080 module is used to demodulator the signal from a 5 or 6 wire LVDT
(LVDT = "Linear Variable Differential Transformer" or "Linear
Variable Displacement Transducer"...) sensors, for accurate displacement/position
measurement, at frequencies up to 20KHz. The board is using a special ratiometric
measurement circuit, which is insensitive to noise and Temp. drift problems,
common to other measurement techniques.
