Accumeasure HD
Picometer Resolution Capacitance Measurement System
The D200HD is a two-channel, picometer scale, capacitance based, displacement measurement instrument for conductive targets.
| Resolution ≤ 0.0000001 √(Hz) FSR Temp Amplifier useable from 0-40°C, Preamp up to 50°C, Probes up to 150°C Drift < 200 PPM / ° C (Amplifier & Probe Preamp ) Probe Standoff 10% of specified probe range Linearity ± 0.01% FSR (at 1X) Range extensions Up to 5X, and up to 10 range extensions per channel (2 standard) Digital Frequency response 5kHzt
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| Measurement Range | 0 to 2mm |
| Noise | ≤ 0.0000001 √(Hz) FSR |
| Repeatability | 100PPB |
| Digital Resolution (LSB) | 1pm |
| Long TermStability/Drift | 20ppm/month or better at 20°C |
| Digital Linearity Accuracy | ±0.01 % FSR |
| Digital FrequencyResponse | 5kHz |
| Output Data Rate | 20k (SPS) |
| Temperature Stability | ± 100 ppm/°C |
| Digital Butterworth Filter | 50, 100, 500, 1kHz, or 5kHz |
| Exponential Filter | No filtering |
| Range Extensions | 5X max |
| ADC bit count | 24 bits |
| Basic Interface | Command-Response, ASCII commands |
| Digital Output | Micro USB and RJ-45 Ethernet 10-100 |
| Digital Latency | < 4ms (Cap input to Ethernet output) |
| Encoder Input | 0-24VDC max A quad B 500k RPM |
| IncludedSoftware | MTI Basic, LabView, .NET and DLL Drivers |
| OperatingTemperature | 0-40°C, 95% non-condensing |
| OperatingEnvironment | IP40 |
| PowerRequirements | 24 VDC < 8W |
| Target Ground Return | Integrated with powerconnector |
| Input Protection | Reverse Polarity(Over volt to 35VDC) |
| ESD Protection | ± 4kV Contact and ±8kV Air |
| Amplifier Case Dimensions | 2”(53mm) H x 4”(103mm) W x 4.7” (120mm)D |
| Case Mount | DIN Mount Kit |
| Preamp Connectors | M12-8 |
| Power andConnectors | Phoenix screw terminal |
| Preamp to Amp cable length | 3 meters |
| Preamp Case Dimensions | 87mm L x 47mm W x 25 mm H |
| Probe Connectors | SMA |
| Probe to preamp cable length | 177mm (7 inch) |
| Number of Channels | 1-2) |
| Multi channel synchronization | Master Slave (simple wire) |
About Digital Accumeasure HD
The D200HD achieves very high resolution with the aid of external preamplifiers that are located close to the probes that eliminate parasitic capacitance effects which cause noise. Digital communication is provided via Ethernet or USB. The bandwidth and range extension of the probes are digitally programmable. Resolutions as low 20pm may be achieved with a 10um range probe.
MTI capacitance measurement system is based on the principle of parallel plate capacitor measurement. The electrical capacitance formed between a capacitance probe and a target surface varies as a function of the distance (gap) between these two surfaces. Capacitance-based measurement probes have long been employed as a means of non-contact measurement of electrically conductive materials. In a typical system, MTII’s capacitance probe acts as one of the plates and the grounded target the other plate. MTI’s amplifier converts the gap’s capacitance into an output voltage proportional to the gap. Capacitive measurements are very stable rivaling interferometer accuracy. The Capacitance is not adversely affected by temperature, humidity and pressure.
Related Products
Capacitance Displacement and Gap Measurement Probes
Accumeasure Analog Capacitance System
Accumeasure Modular Capacitance Rack System
Accessories
| P/N | Image | Model | Product Description |
|---|---|---|---|
| 8000-6925 |  | Power Supply | DIN mount (includes power cord and 24VDC harness) |
| 8000-6887 |  | Ethernet Cable | RJ45 to RJ45, 2.1 meter (7ft) |
| 8000-6929 |  | USB Interface Cable | Micro USB-Male to USB Micro USB-Male, 1 meter (3.1ft) |
| 8000-6882 |  | DIN Rail Section | 250mm (10inch) din rail for wall mounting power supply |
| 8000-6889 |  | T-Connector | Synchronization adapter to daisy chain multiple systems |
| 8000-6888 |  | Sync Cable | Cable to sync multiple systems (SMA-M to SMA-M) |
| 7500-6811 |  | Fixture | Non-conductIve Material Fixture |
