Specifications
- Function
- reciprocal frequency meter
- Measuring ranges
- 20 mV – 2 V rms (sine), 0.3–10 Vpp (pulses)
- Frequency range
- 1 Hz – 100 kHz
- Accuracy
- resolution from 0.1 mHz (1–10 Hz) to 1 Hz (10–100 kHz); time base ±5 × 10⁻⁶ / 24 h
- Input impedance
- 1 MΩ ∥ 50 pF
- Display
- 5 digits, LED
- Power supply
- 220 V ±10%, 50/60 Hz
- Power consumption
- max 50 VA
- Dimensions
- 310 × 105 × 415 mm (W × H × D)
- Weight
- 6 kg
Description
The E0205 is a digital frequency meter, made by IEMI in Bucharest and designed at the ICE research institute [1]. It was also made in variants [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 is a reciprocal frequency meter with a five-digit LED display [2]. IEMI’s production table lists 1,647 units made in 1979–1985 [2].
Its list price, set in 1982, was 16,380 lei [3].
Annex III.2.7 says it measured low frequencies (1 Hz – 100 kHz) and rotational speeds with high resolution, for adjusting and calibrating oscillators in automation and power systems and for testing motors and other rotating parts; it chose its range automatically, showed the decimal point and the unit and could hold the displayed result. The prospectus gives a mean time between failures of about 1,000 hours [4].
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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.2.5 „Lista cu prețurile produselor – IEMI”, pp. 393–396
- [4]N. Millea (coord.) et al. – „Electronica românească. O istorie trăită”, vol. II „Electronica profesională”, AGIR, annex III.2.7 „Frecvențmetre”, pp. 614–617