Saelig Introduces NanoRanger® NR-01 3.5 Digit DC Nanoammeter

NanoRanger® measures currents from 1nA - 800mA with 10pA resolution. Factory calibrated, eliminating the requirement for high-cost precision components, keeping purchase price low.
ROCHESTER, N.Y. - Oct. 29, 2021 - PRLog -- Saelig Co. Inc. has introduced the NanoRanger® NR-01 - an affordable, highly accurate 3.5-digit DC ammeter designed for accurately measuring very low currents.  With automatic dynamic ranging (9 ranges across 8.5 decades), NanoRanger® measures currents from 1nA up to 800mA with a maximum resolution of 10pA.  Factory calibrated  keeps the purchase price low. The 12-bit ADC is oversampled and averaged to produce a 16-bit result. Samples are taken every 170uS, readings shown every 300mS, built up from 180 averaged samples to eliminate line noise (both 50 Hz and 60 Hz). An alternative 'Fast Sample' Mode can sample at 150 msmts/sec.

The backlit 11-digit 128 x 64 LCD display provides a wealth of information for current readings; for instance, mA, uA, nA, and pA are all on one line. A Running Average reading (current and time elapsed) allows the user to measure power consumption of specific events, such as radio transmissions.

NanoRanger® is designed with a fully isolated USB interface for device control and data export.  Being fully isolated means that a USB connection will not adversely affect the measurements.
  • Low Burden Voltage (<0.05V) on all ranges.
  • User-configurable Auto Power-off timer.
  • 5.8" x 3.6" x 1.2"; 7oz
  • Measure leakage currents over time.
  • Understand and manage IoT power budgets.
  • Two AA batteries allow 150 hours of operation

As engineers strive for more efficiency from new and existing products, the measurement of current consumption of devices is becoming more critical. One of the challenges in working with low power analog and digital circuits is the problem of burden voltage - the voltage drop caused by current flowing through a current measuring device that uses an internal shunt resistor network, common in most DMMs.  The NanoRanger® has been designed specifically to minimize burden voltage to less than 50mV when taking low power current measurements. A large burden voltage can affect the circuit being measured, corrupting the measurement. For this reason, it is desirable for burden voltage to be kept as low as possible.

NanoRanger is designed by UK-based AltoNovus, which specializes in designing and building low power products.  Aimed at the low power development community, including IoT and energy harvesting technologies, NanoRanger is available now from Saelig Company, Inc.
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