Specifications
- Function
- DC voltage
- Measuring ranges
- 0.2 / 2 / 20 / 200 / 1000 V
- Accuracy
- ±(0.15% of reading + 0.05% of full scale)
- Input impedance
- 0.1 MΩ (0.2 V), 1 MΩ (2 V), 10 MΩ (higher ranges)
- Display
- 4½ digits, seven-segment, telephone lamps
- Outputs / interface
- BCD, for a digital printer
- Construction
- transistors
- Power supply
- 220 V ±10%
- Power consumption
- 70 VA
- Dimensions
- 20 × 43 × 37 cm (H × W × D)
- Weight
- 20 kg
Description
The E0301 is a digital voltmeter, made by IEMI in Bucharest and designed at the ICE research institute [1].
ICE’s laboratory for electronic instruments for measuring electrical quantities designed all the institute’s generations of oscilloscopes, voltmeters, multimeters, signal generators, frequency meters, logic analysers, RLC bridges and stabilised AC power supplies; they went into production at IEMI or in ICE’s own microproduction workshop, and equipped industrial laboratories and production lines as well as teaching and research laboratories [1]. In the 1970s and 1980s about half of the components of measuring instruments were imported; after 1980 about three quarters were Romanian [1].
It measures DC voltage [2].
Annex III.2.8 says it measured DC voltages from 100 µV to 1000 V with automatic polarity indication, by successive approximation; with suitable transducers it could also measure non-electrical quantities such as temperature, pressure, dimensions or gas concentrations, and its results could be recorded in binary-coded decimal on a digital printer. It was fully transistorised, with a seven-segment display made of telephone lamps [3].
Gallery
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Schematics
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Documents
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References
- [1]N. Millea (coord.) et al. – „Electronica românească. O istorie trăită”, vol. II „Electronica profesională”, AGIR, section II.4.1 „Laborator aparate electronice pentru măsurarea mărimilor electrice”, pp. 109–115
- [2]N. Millea (coord.) et al. – „Electronica românească. O istorie trăită”, vol. II „Electronica profesională”, AGIR, sections III.2 „Producția IEMI” and III.3 „Comentarii tehnico-economice”, pp. 302–317, and annex III.2.3 „Producția IEMI – aparate electronice de măsură și industriale”, pp. 383–386
- [3]N. Millea (coord.) et al. – „Electronica românească. O istorie trăită”, vol. II „Electronica profesională”, AGIR, annex III.2.8 „Voltmetre – multimetre – wattmetre”, pp. 618–627