National Instruments PXIe-4081 PXI Digital Multimeter

The National Instruments PXIe-4081 (Part Number: 783130-01, 154888C-02L) is a 7½-Digit, ±1,000 V; Onboard 1.8 MS/s Isolated Digital Multimeter. The NI PXIe‑4081 is the industry’s most accurate 7½‑digit DMM, which provides the measurement capabilities found in a high-resolution 1,000 V DMM and a digitizer, which are two common test instruments. As a DMM, the PXIe‑4081 delivers speedy, precise AC/DC voltage, AC/DC current, 2‑ or 4‑wire resistance, and frequency/period measurements, as well as diode tests.

In the high-voltage, isolated digitizer mode, the NI PXIe‑4081 can acquire waveforms at sample rates up to 1.8 MS/s at the full input range up to 3 A or 1,000 V. Additionally, the user can choose a PXI DMM that can perform basic inductance and capacitance measurements. For the isolated digitizer, the voltage of the PXIe‑4081 ranges from ±100 mV to ±1000 V (DC or AC coupled), the current ranges from ±1 µA to ±3 A, and the sample rate range is 10 S/s to 1.8 MS/s.

The National Instruments PXIe‑4081 Digital Multimeter has an input impedance of 10 MΩ ± 2% in parallel with 90 pF, and the maximum DC voltage component is 400 V. This DMM has a frequency range from 15 Hz to 500 KHz and a period measurement range from 2 µs to 66.67 ms. This PXI Digital Multimeter has an ADC Linearity range up to 0.5 ppm of reading + 0.5 ppm.

The PXIe‑4081 has a warm-up time of 60 minutes, and should be calibrated once every 2 years. It has an input protection of 1000 VDC or Vpk, and a current mode fuse rating of T 3.5 A 1000 V, time-lag Minimum interrupt rating: 10 kA Siba 5019906.3,5. The NI device is compatible with the NI-DMM driver software and its hardware can be programmed using an application development environment such as LabVIEW or LabWindows/CVI. The device can be configured using the Measurement & Automation Explorer (MAX) tool.

The PXIe-4081 weighs 12 oz., and measures 8.5 x 5.1 x 8.5 in. in physical dimensions. It has a recommended operating temperature range of 0 °C to 55 °C, and a storage temperature range of -40 °C to 71 °C.

The PXIe-4081 is available to be calibrated. While the recommended calibration period for individual parts varies, most parts should be calibrated either annually or every two years to ensure accuracy. If you need the PXIe-4081 calibrated, Apex Waves provides options. We offer high-quality NIST accredited calibrations through a 3rd party, with an average turnaround time of 1 to 2 weeks. When you order the PXIe-4081 with us, you can request basic (unaccredited) in-house calibration that will calibrate the part to the manufacturer specifications prior to being shipped. Call or email us today for more information about calibrating the PXIe-4081!