Kaman KD-2300 - Manual (Page 11)

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Part I: What is the KD-2300? KD-2300 Instruction Manual
Nonconductive materials intervening between the sensor and target have
little or no effect on system output. Because of this, environmental
contaminants, such as oil, dirt, humidity, and magnetic fields, have
virtually no effect on system performance. The function of a noncontact
displacement measuring system is to monitor the position of a target
relative to some reference plane. The magnitude of the analog output is
dependent upon the relative position of the target within the sensor’s
electromagnetic field—the farther the sensor is from the target, the higher
the analog output.
Reference
Plane
Reference
Plane
Target Target
System Configuration
The figure below shows a block diagram of the system configuration.
Every system contains an electronics oscillator / demodulator and a
sensor.
± Vdc input
POWER
CONDITIONING
STAGE
OSCILLATOR
STAGE
RF
CONTROL
STAGE
DC
CONTROL
STAGE
CALIBRATION
CONTROLS
Zero
Gain
Linearity (Coarse or Fine)
SENSOR DRIVE
CONNECTORS
System V out
TO SENSOR