Our company independently develops and produces its products.
C900 is a capacitive displacement sensor with nanometer resolution and ultra-high precision.
It is a capacitive, non-contact displacement measurement instrument, featuring high resolution, excellent accuracy, stability, and repeatability, providing a perfect solution for many measurement applications that were previously unattainable. Its fast response time and extremely low noise levels make it an ideal choice for critical measurements of targets such as rotating spindles and shafts, discs, tires, and wafers.
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Features: |
Applications: |
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Performance Parameters
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Output Signal |
0~10Vdc |
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Maximum Adjustable Offset |
-5Vdc |
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Range |
0-12mm |
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Resolution |
0.000075%*√Hz*FS RMS 0.00167%*FS @500Hz RMS For example, range 500μm, resolution 8nm |
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Linearity |
±0.02% FS |
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Repeatability |
±0.02% FS |
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Frequency Response |
500Hz (default) Optional 100Hz, 1kHz, 5kHz or 660Hz |
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Output Noise |
-3dB@500Hz 0.20 mV rms, 1 mV p-p -3dB@1kHz 0.28 mV rms, 1.4 mV p-p |
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Warm-up Time |
30 minutes |
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Operating Temperature |
Controller |
0 ~ 40°C |
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Probe |
-120°C ~ 200°C Optional high-temperature probe-120°C ~600°C(ceramic package) |
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Input Voltage |
±15 Vdc, greater than300 mA |
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Temperature Stability |
±0.01% FS/°C (after 30 minutes of warm-up) |
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Time Stability |
±0.01% FS/100 hours (after 30 minutes of warm-up) |
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Weight, Dimensions |
200g, 152.5*108*30mm |
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FS=Full Scale =full scale |
ControllerC900
The standard version controllerC900, as shown in Figure1, is housed in an aluminum alloy box, providing excellent anti-interference capability. The front panel features2 SMA connectors for connecting the sensor probe and output signal, while the rear panel has anI/O port, which is a9pin connector.
Figure1, ControllerC900 schematic
Figure2, Actual image of the controller
Sensor Probe
Currently, only3 types of probes have been designed, all with a range of500μm, but with different structural forms. The standard versionC0815 is usually in stock, while the other2 types of probes may need to be ordered for production; the default cable length is2m, and all connectors areSMA male. Customization is also available upon request.
| Probe Model | Diagram |
| C0815Range 500μm |  |
| C0835-SMARange 500μm |  |
| C0810-PAN Range 500μm |  |
Table1, Sensor Probes
Order Example:
| C900 – C0815 | |
| (1) | (2) |
(1), Controller model, standard versionC900
(2), Probe model, see Table1. Probe cable length, default2m.C0835-SMA comes with a2m adapter cable.
Usage of Probe Range
It is recommended to use the full range of10%~90%, as shown in Figure2.
Figure2, Probe Range
Installation and Usage
1. Probe Connection
The controllerC900 has an SMA female connector labeled Probe on the front panel for connecting the sensor probe, which has an SMA male connector. It is particularly important to note that the probe housing carries approximately3V voltage, so the probe housing must be grounded or connected back to the power supply’s GND, as shown in the wiring diagram in Figure3.
2. Power and OutputI/O
I/O port is located on the rear panel of the controllerC900 labeled Power&Output, for power supply and output.
Power supply requirements are ±15Vdc( error±0.5Vdc), power noise less than0.01Vdc p-p, current not less than300mA.
3. OutputOutput
The output signal is an analog voltage0~10Vdc, which can be connected to the SMA connector labeled Output on the front panel of the controller or the output on the rear panel’sI/O port, which can be used to connect to a digital multimeter or data acquisition card.
Figure3, Wiring Diagram
Figure 4, Measured Resolution 2.7nm RMS, 22.6nm p-p
