Digital Accumeasure Gen 3

Digital Accumeasure Product

Nanometer accuracy, high precision capacitance measurement sensor offering nanometer accuracy and stability.

The Accumeasure D capacitance displacement sensor series amplifier is a revolutionary design that uses the latest technology to convert a highly reliable capacitive electric field measurement (displacement) directly into a highly precise 24 bit digital reading to accurately measure position, thickness, motion and vibration.

About Digital Accumeasure Gen 3

Our new capacitance amplifier converts the probe capacitance directly to target gap (distance). This direct conversion approach eliminates errors that traditional analog amplifiers have due to analog filtering, linearization, range extension and the summing of channels to obtain thickness or step measurements.  With the Accumeasure D series, filter frequency response, sample rate, linearization and probe range are all digitally controlled. This ensures the most accurate data capture, lossless processing and the freedom from having to purchase additional acquisition hardware.

The standard feature quadrature encoder input, provides probe positional information simultaneously with its displacement signal by synchronizing displacement measurements to the probe position to provide accurate surface profiles of various conducting and semi-conducting targets.  MTI’s Digital Accumeasure capacitance displacement sensor amplifiers comes standard with 24 bit USB/Ethernet digital output. The analog output model includes the analog output in addition to the standard digital output. Both may be used simultaneously. This is ideal for closed loop applications or integration into systems that require analog.

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.

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P/N Image Model Product Description
8000-6925 power supply accessory Power Supply DIN mount (includes power cord and 24VDC harness)
8000-6887  ethernet cable Ethernet Cable RJ45 to RJ45, 2.1 meter (7ft)
8000-6929 USB interface cable USB Interface Cable Micro USB-Male to USB Micro USB-Male, 1 meter (3.1ft)
8000-6882  DIN rail section accessory DIN Rail Section 250mm (10inch) din rail for wall mounting power supply
8000-6889  T connector T-Connector Synchronization adapter to daisy chain multiple systems
8000-6888  sync cable Sync Cable Cable to sync multiple systems (SMA-M to SMA-M)
7500-6811  fixture 7500 6811 Fixture Non-conductIve Material Fixture