Millivoltmeter analog AC V3-56 (V3 56, V356, Vз-56, b3-56, b3 56, b356)
Instrument scale Millivoltmeter analog AC V3-56 to calibrate the RMS values of a sinusoidal voltage and decibels. 0 dB is equal to 0.775 V.
The operating conditions of use of the instrument:
Ambient temperature from 243 to 323 K (from -30 to +50 ° C);
relative humidity of 98% at a temperature of 308 K (+35 ° C);
atmospheric pressure of 61.3 kPa to 104 (from 460 to 780 mm. Hg. centuries).
mains voltage of 220 ± 22 V, 50 Hz ± 0,5 and harmonic content up to 5%, 220 ± 11 at 400 ± 12 Hz and harmonic content up to 5%.
Measurement range of the instrument Millivoltmeter analog AC V3-56 voltage of 0.1 mV to 300V overlapping ranges with upper limits of 1 mV; 3mV, 10mV, 30mV, 100mV, 300mV and 1B, 3B, 10B, 30B, 100B and 300B. With a voltage divider DN-523 (1:10) measurement range of the instrument voltage 1 mV to 3V.
Frequency range voltages measured by the instrument, from 10Hz to 15MHz, 1kHz frequency calibration. Operating frequency range shown in Table. 1
Millivoltmeter analog AC V3-56 are output DC voltage of positive polarity with a nominal static characteristic of the transformation:
U out = U · · Vout N / Uc
U out - the nominal value of the output voltage, V;
Vout · N - normalized value of the output voltage, V;
U - the actual value of the input voltage, V;
U k - value of the input voltage V corresponding to the scale value for subband set. The normalized value of the output voltage Vout device · n, corresponding to the input voltage U is equal to 1V.
The basic error of the instrument Millivoltmeter analog AC V3-56, expressed as a percentage of the upper limit set sub-band measurements does not exceed ± 2,5% for all sub-bands of measurement and ± 4% with a divider DN-523.
Variation readings Millivoltmeter analog AC V3-56, expressed as a percentage of the upper limit established by sub-band does not exceed ± 1,5%.
Instrument error Millivoltmeter analog AC V3-56 in the working frequency regions, expressed as a percentage of the upper limit of the established sub-band, and the change of readings within the operating frequency ranges with respect to the frequency of calibration readings do not exceed the values listed in Table. 2.
Tolerance converting AC voltage to DC voltage does not exceed the values specified above.
Changes display and output voltage device Millivoltmeter analog AC V3-56, due to changes in ambient temperature from normal to any temperature within the operating temperature range does not exceed one half of the maximum permissible basic error for every 10 ° C change in temperature.
Millivoltmeter analog AC V3-56 has an output broadband amplifier with the following parameters:
- The output voltage of 100 mV ± 20% (at full deflection pointer);
- Output impedance 50 ohms ± 10%.
Electrical zero offset caused by the intrinsic noise does not exceed 5% of the upper limit of the sub-band set with a closed-circuit input.
Active impedance device, measured at a frequency of 45 Hz, less than 4 MW, and by using a voltage divider DN-523 of at least 1 megohm.
Input capacitance device do not exceed 30 pF subbands upper limits of 1-300 mV and 15 pF subbands upper limits of 1-300 V and a voltage divider using DN-523. Capacity imparted cable not more than 80 pF.
The output resistance of the device when you convert AC voltage to DC voltage of 1 ohm ± 10%.
Response time the device is less than 4 seconds.
Warm-up time 5 min.
Millivoltmeter analog AC V3-56 retain their characteristics when feeding them from an AC voltage of 220 ± 22 V and 50 ± 0,5 Hz, harmonic content up to 5% and 220 ± 11 at 400 ± 12 Hz, harmonic content up to 5% .
Allowable stresses the value of the sum of dc and rms value of the measured voltage 350 V.
The power consumed by the device Millivoltmeter analog AC V3-56 from the network at the rated voltage does not exceed 15 VA.
Millivoltmeter analog AC V3-56 allows continuous operation under the operating conditions for 16 hours while maintaining their performance.
Overall dimensions 171x209x332 mm max.
Dimensions of packing box 447x347x305 mm max.
Overall dimensions of shipping containers no more than 648x602x458 mm.
Unit weight is not more than 6 kg.
Weight of the device in the packing box is not more than 13 kg.
Weight of the device in transport containers not exceeding 35 kg.
Average lifetime 10 years.
Average life 10,000 hours