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 Circuit
Board Carrier Demodulator Validyne CD101
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Low-Cost Circuit Board Carrier
Demodultor for VR Pressure Sensors
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Variety of Power, Signal and
Connection Options
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Ideal for OEM Use
Specifications
Mounting
Wiring
Circuit Board Carrier Demodulator
Description:
 The
CD101 is a complete Carrier Demodulator, designed to be used with
variable reluctance pressure transducers or LVDT displacement
sensors in a variety of industrial or OEM applications. The CD101
supplies a 5Vrms, 5khz carrier excitation and demodulates the
sensor output signal to +/-10 Vdc. The compact size and printed
circuit construction of the CD101 makes it possible to mount this
demodulator in panels, recorders or other system enclosures. Accessories
include optional brackets, stand-offs card-edge mounting, remote
or board-mounted zero and span adjustments and operation from
+/-15 Vdc, 115 or 230 VAC. The low pass output filter is set to
1000 Hz for dynamic or static applications. Both input and output
are protected against short circuits.
Circuit
Board Carrier Demodulator Specifications:
Input Sensitivity: minimum
+/-15 mV/V for +/-10 Vdc analog output signal. Continuously adjustable
by span control.
Maximum Input: 2.5 Vrms
Excitation Available: 5Vrms, 5Khz
Bridge Input: 2-arm variable reluctance or LVDT
Zero Control : +/-10 mV/V
Output: +/-10 Vdc; 10 mA into 1 Kohm
Output Ripple: 10 mVp-p maximum
Output Impedance: 10 Ohms, nominal
Frequency Response: Flat (+/-5%) to 1 Khz
Linearity: +/-0.05%
Stability: +/-0.1% long term
Temperature Range: 0 to 185 deg F
Thermal Effect on Zero: 0.005%/F, typical
Thermal Effect on Span: 0.01%/F, typical
Electrical Connections: Printed circuit board edge connection,
other options available.
Power Requirements: 105-125 VAC, 50-400 Hz or 205 -250
VAC, 50-400 Hz; 2VA or +/-15Vdc @+17, -25 mA
Size: 5" x 6". Max height, 1.6" above mounting
surface.
Circuit
Board Carrier Demodulator Mounting:
The CD101 can be mounted in a variety
of ways. Threaded standoffs for 6-32 screws are provided for mounting
the circuit board to any flat surface. If all of the electrical
connections are made via the edge connector, the CD101 circuit
board may be mounted using card edge guides.
Circuit
Board Carrier Demodulator Electrical
Connections:
The CD101 can be ordered in a variety
of configurations for electrical connections. The CD101 can be
powered with AC or +/-15 Vdc, as shown on the wiring diagram.
The pressure transducer connections may be made through the edge
connector, through a terminal strip, or by way of a six-pin (Bendix)
or 4-pin (Canon) connector mounted on the circuit board. Zero
and span pots may be ordered already mounted on the circuit board,
or they may be connected externally by the user via the edge connector
or terminal strip (if supplied).
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