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The DNM‑121 is a high‑precision digital nanoammeter engineered to accurately measure ultra‑low DC currents, from 100 pA to 200 µA, across four decade ranges with 100 % over-ranging. Featuring low‑leakage FET‑input design and high‑negative feedback, it offers excellent linearity, fast response, and accuracy of ±0.2 % across all ranges with resolution down to 0.1 nA. Current input is accepted from either polarity, and the instrument provides digital readout on a 3½‑digit LED display with auto polarity and decimal indication. The unit is built with rugged industrial casing for lab use and operates on a standard 220 V ±10 %, 50 Hz supply. Key Specs:
Designed for measuring ultra-low currents from devices like photomultiplier tubes, photometers, solid-state device leakage, FET gate currents, very high resistance samples, piezoelectric or pH electrodes. |
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