The equipment supplied is of "Danubia Schlumberger"; Year 1991; 40A max; 480 U / kWh. There are slight scratches in the housing and the glass is slightly turbid (only marginally). On the cover of the terminals is a bit to the screw stopped what was supposed to hold the seal (does not impair the function, could also be on purpose?). If delivery of the count to "0 kWh".
The "Not approved for billing purposes" sticker can be easily peeled off. For the intermediate meter is not automatically more accurate)
Had I grown by the long-term average consumption of various appliances to determine the differential counter.
This electronic power meter from different vendors with similar price are unfortunately very inaccurate in the Storm measurement. Thus arise in the electronic Leisungsmessern straight when measuring standby consumption too large inaccuracies. For example. measures a present device in 0.05A increments. Thus, the display changes from 0 to 11.5 watts (0 * 230 and 0.05 * 230). This is so obviously useless. The electronic meters require a button cell to (if too thick bread was stuffed into the toaster and therefore the FI flies or) not to mention the value during a power outage.
The delivered device already starts the meter disc (extremely slow but just barely visible) to rotate when a power strip with built-in lighting switch is connected. VCR, DVD player, satellite receiver and TV together in standby let the meter disc visibly slow circles. A few degrees lopsided effect that the counter plate increased from less fuel. So could be a source of measurement error.
The equipment must be hung on a wall / board or at least stand vertically, otherwise the wheel does not rotate cleanly. The meter is supplied without a plug / socket. So if you want to measure the consumption of individual devices can be (appropriate expertise / training etc. required) separating a short extension cord or the supply a power strip and grind the counter.
