SA-3300XL Eddy Current Displacement Sensor

The SA-3300XL eddy current displacement sensor is a measuring device that can convert mechanical displacement, vibration amplitude, or speed into electrical signals for output. It consists of a sensing head, preamplifier, extension cable, and measured conductor, and is an ideal non-contact sensor for measuring displacement, amplitude, and speed.

working principle

If there is a very high frequency (usually taken asWhen a current of 1MHz flows from the oscillator into the sensor coil, the sensor coil generates a high-frequency oscillating magnetic field. If a piece of metal approaches this magnetic field, eddy currents will be generated on the surface of the metal. The intensity of eddy current varies with the distance between the sensor coil and the metal, as this distance affects the impedance of the sensor coil. Therefore, distance measurement can be achieved by measuring impedance. The eddy current sensor outputs a DC voltage signal that is a single valued function of distance. As shown in the figure below:

Application field

CZ600Eddy current displacement sensorIt can be widely used in online monitoring and fault diagnosis of axial displacement, radial vibration, differential expansion, eccentricity, phase detector, swing, and shaft speed of large rotating machinery. Large machinery such as steam turbine units, water turbine units, compressors, large cooling pumps, induced draft fans, gearboxes, coal mills, blowers, water pumps, wind turbines, etc

It has also been widely used in material identification, surface roughness measurement, metal plate thickness measurement, material deformation measurement and other application fields.
feature

1. High sensitivity

2. High resolution

3. Wide measurement range

4. Dynamic response width

5. Can be transmitted over long lines

6. Strong adaptability, able to work in environments with oil, water, high air pressure, and strong interference

7. Non contact measurement and monitoring of displacement, vibration, speed, size, thickness, without mechanical measurement force

Technical Specifications

Probe specifications		Φ5mm	Φ8mm	Φ11mm	Φ25mm
probe diameter		5 mm	8 mm	11 mm	25 mm
measurement range		1 mm	2 mm	4 mm	12 mm
linear error		<1%	<1%	<1%	<1.5%
Static sensitivity		Depending on the output signal and corresponding range
power supply voltage		1、 +24Vdc (output signals: 1-5V, 1-10V, 4-20mA) 2. -24Vdc (output signal: -2~-18V) Note: Different output methods result in different power supplies
output signal		1～5V、1～10V 、4～20mA、-2～-18V
output method		Three wire system (power supply, signal, common terminal)
resolution		0.001mm
System temperature drift		0.1%/℃
frequency response		0～5KHz(0.5dB)
Output ripple		Voltage output:<20mV; Current output:<30uA
operating power consumption		<10mA (excluding 4-20mA current output)
output load		Voltage output: Load capacity<10K Current output: Load capacity<500 Ω
Environmental temperature during calibration		（20±5）℃
use temperature	Proximitor	-30℃～+70℃
	probe	-40℃～+150℃
	cable	-40℃～+150℃
weight		500g±3%
Total length of cable		5m or 9m
Extend cable length		4ｍ、4.5ｍ、8ｍ、8.5ｍ
Probe cable length		1ｍ、0.5ｍ
Normal working environment		No strong magnetic field, no corrosive vapor liquid, no strong vibration source
insulation resistance		＞500MΩ
Insulation strength		＞500V
Size of preamplifier		90mm(W)×35mm(L)×70mm(H)； Installation of guide rails or screws
Installation of preamplifier		1. Bottom plate installation, 51mm × 51mm, using four M4 × 12 GB29-76 bolts for installation; 2. Rail installation, can be easily installed on standard 35mm rails.
Connection of preamplifier and probe cable		Using SpringLoc terminals with automatic fastening function, wiring can be done without the need for installation tools. As there is no need for bolt fixation, it will not loosen.