• Gossen Metrawatt
  • Camille Bauer

MAVOWATT 30,40,70 - How long can I record values

For which maximum recording time is the memory module (4 GB) in my Mavowatt laid out, or for how long can I record values with my Mavowatt?

There’s no single answer to this question, because memory capacity requirements depend on device settings and events which occur within the system.

The more quantities are recorded, the smaller the recording intervals are, and the more events are detected in the system, the more memory capacity is required.

In order to nevertheless be able to make a statement regarding memory capacity, we performed numerous measurements with the Mavowatt 70. Various events were simulated while recording was in progress, for example voltage dips and rises.

The results of this measurement series are included below along with the utilized settings, as well as required memory capacity:

Mavowatt 30/40/70 recording time and download speed:


  • With continuous recording at 10 second intervals (without events) including harmonics:
    Approx. 2 MB per hour: 256 MB = 128 hours = 5 days, 8 hours
  • With continuous recording at 1 second intervals (without events or harmonics):
    Approx. 5 MB per hour: 256 MB = 50 hours = 2 days
  • With continuous recording at 10 minute intervals (without events) including harmonics:
    Approx. 320 days
  • Approx. 50 kB per event with default settings (2 x 5 periods, waveform and 2 x 12 rms)

Download via NodeLink: @9600Bd = 45kB/Min,   @115200Bd = 180kB/Min

The instruments stop recording after max. 256 MB (default setting: 128 MB), and create a new directory on the CF card. Measured values and characteristic waveforms are first written to RAM, and subsequently to the directory created on the CF card. In this way, uninterrupted recording is assured.

Dialogue, Information and Actions: