Ref: KD-2446

Inductive eddy current sensor - 0.5 to 25 mm - 10 kHz - Analogue & digital output

Non-contact eddy current measurement system
Includes: Sensor + cable + electronics
Measuring range: 0.5 mm to 7 mm
Voltage output: 0-10VDC or 0-22 VDC at 10 kHz
Digital output: 30 Vrms or 60 VDC @ 100 mA- 3,3 kHz (digital output)
Power supply: 12 or 24Vdc, 4.2 mA
Electronics: DIN rail
Sealing: IP67 (sensor), IP40 (electronics)
Insensitive to oil, dust, humidity, magnetic fields
Operating temperature: -320.8°C to 401° (sensor + cable)

Non-contact proximity switch

Operating principle

The KD-2446 Eddy Current Probe is used for automated, non-contact detection of metal, magnetic or non-magnetic parts at distances up to 25mm.

When a part leaves the detection field of the KD-2446, an LED on the front of the conditioner lights up, and the digital output goes high. The detection distance limit is set via a potentiometer on the front panel. Switching times are 50µs approach, 250µs distance, i.e. a switch mode bandwidth of 3.3 kHz, corresponding to a maximum speed of 200,000 rpm in a speed measurement application.

The instantaneous distance is also transmitted by the KD-2446 on an analogue voltage output 0-10 V or 0-22 V. The bandwidth is 10 kHz.

Calibration / adjustment

Calibration of the KD-2446 is performed at the factory, with the probe and the metal target of the application, under the measurement conditions (temperature, supply voltage, etc.). As an option, calibration points can be specified to optimise accuracy. When installing the system or when using a new metal target, the gain and offset of the amplifier can be adjusted to optimise the linearity of the response.

More information on the principle of Eddy Current measurement: here