HY-3D displacement (differential expansion) monitoring and protecting device uses CWY-DO proximity sensor to achieve axial displacement (differential expansion measuring and protecting. Axial displacement (differential expansion) monitoring device uses proximity sensor as primary element- a kind of non contacting sensor, widely used in power, mechanical, chemical and metallurgy firms, its principle of measuring displacement is used proximity effect when measured object in high frequency electromagnetic field. The advantages of this kind of sensor have wide linearity range, high precision and sensitivity, wide frequency response, good temperature property, the value inspected will not be influenced by other medium e.g. oil vapor.

1. High intelligentized, parameters can be set on screen, suitable for
on-line monitor in a long term, easy to install and commissioning.
2.
Axial displacement output display, minus and positive alarm value can
be set according to customer, minus and positive trip relay output,
contact output DC27V/2A or AC220V/2A
3. Up and lower limit of full scale can be set according to required, 4-20mA currency output.
4. Measuring probe installation direction can be set on screen, and installation zero position can be adjusted.
5. Auto memorize trip shutoff operating, auto monitor shutdown. Trace maximum value of sampling signal.

1. Measuring range:
        axial displacement:-1.00～+1.00mm(with CWY-DO-Φ8 proximity sensor);
        axial displacement:-2.0～+2.00mm(with CWY-DO-Φ11 proximity sensor);
        differential expansion : -3.00～+5.00mm(with CWY-DO-Φ18 proximity sensor);
        differential expansion :-4.00～+6.00mm(with CWY-DO-Φ25  proximity sensor)
2. Measurement accuracy: 0.5, linear error≤±0.5%;
3. Display model: LED display or LCD display;
4. Signal output: 
        a. currency output: 4～20mA (in full scale range, resistance≤850Ω);
        b. RS485 signal output;
        c. On-off output: two on-off output for each channel (AC250V/5A, DC27V/2A);
5. Environmental temperature:-15℃～65℃ (relative humidity≤85％);
6. Supply voltage: AC 85V～265V or DC 120V～370V;
7. Installation: in panel or local protecting box
        Overall size: 160×80×200(mm);
        Hole dimension:152×76 (mm);
        CWY-DO-Φ8 proximity sensor thread: M10×1.0;
        CWY-DO-Φ11 proximity sensor thread: M14×1.5;
        CWY-DO-Φ18 proximity sensor thread: M25×1.5;
        CWY-DO-Φ25 proximity sensor thread: M30×2.0;
        CWY-DO overall size: 81×61×45mm;