Specifications
- Measuring ranges
- 10 µV – 20 V
- Accuracy
- ±(0.02% of reading + 0.01% of full scale) at 23 °C
- Input impedance
- floating input
- Outputs / interface
- parallel BCD
- Construction
- built-in supply 5, 10 and 15 V (adjustable), 300 mA; Metroset case
Sources: [1]
Description
The E0311 is a digital voltmeter with a voltage source for weighing equipment, made in the microproduction workshop of the ICE research institute in Bucharest, where it was designed [1]. Two units were made, for the static weighing of railway wagons at the Făgăraș chemical works and at the Sibiu weighing-machine factory (Balanța) [1]. It was well received and stayed in use for a long time [2].
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].
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, section II.8.1 „Până unde s-a ajuns” (I. Constantinescu), pp. 174–181