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Voltcraft Energy logger 4000
Measurement and logging of voltage(V), current(A), frequency(Hz), Power consumption (W, also VA, and cos Phi), currently/min/max, energy consumption total, in payment units, devided into days, monthly and yearly forecast, memory for half a year logging, SD card for data transfer to a PC, PC software with graphing.
Here some measurements.
BM 518 given out to Jan H.
Czech rep., tranzistor multimeter. With probe voltage till 2GHz.
Mastech HY 1803D
AC 230V to DC 0-18V, 3A power supply. 9 x 15 x 21 cm. Transistor on the cooler: 2N3055.
ASWO Diagnose System - after separation and some work over of power parts.
1. Separation transformer
2. Power supply
ELV DTG 402
For testing multimeters. Power supply: 13-18 V DC / 200 mA.
|Voltage DC||±0,1%||0,1 V ±0,7%||1 V||10 V|
|AC||±1,5%||0,1 V||1 V||3 V|
|Current DC||±0,5%||1 mA||10 mA||100 mA|
|AC||±2%||1 mA||10 mA||100 mA|
|Resistance||±1%||100 Ω||1 kΩ||10 kΩ||100 kΩ||1 MΩ|
|Capacitance||±5%||100 pF||1 nF||10 nF||100 nF||1 µF|
AEG Optimator. For R, C and R-C combination.
The capacitors are pretty inaccurate. The 6.8 µF of this device is defective.
Also the 10 kΩ linear Potentiometer is not OK.
There were succesors of this device Optimator 2 and Optimator 3.
Optimator and Optimator 3 side by side.
AEG Optimator 3. For R, C, R-C combination and some other possibilities.
See production date.