Millivoltmeter V3-55 (V3 55, V355, b355, b3 55, b3-55)
Designed to measure the rms AC voltage sine wave.
Measuring range 0.1 mV to 300V
The basic error of ± 2,5%
Millivoltmeter V3-55 is designed to measure the rms AC voltage sine wave. Instruments' scales in the RMS values of a sinusoidal voltage in decibels. 0 dB is equal to 0.775 V.
The operating conditions of use of the instrument Millivoltmeter V3-55:
ambient temperature from 278 to 313 K (from +5 to +40 ° C);
relative humidity up to 95% at a temperature of 303 K (+30 ° C);
atmospheric pressure of 61.3 kPa to 104 (from 460 to 780 mm Hg. centuries).
supply voltage of the two elements 373, or an external DC voltage source 3 +0.1 / -0.6 V.
supply voltage of the power supply from the AC voltage of 220 ± 22 V, ± 0,5 at 50 Hz and harmonic content up to 5%.
Measurement range of the instrument Millivoltmeter V3-55 voltage of 0.1 mV to 300V overlapping ranges with upper limits of 1 mV, 3mV, 10mV, 30mV, 100mV, 300mV, 1V, 3V, 10V, 30V, 100V and 300V.
Frequency range measured by the instrument Millivoltmeter V3-55 strains from 20 Hz to 1 MHz is divided into three work areas: I region from 45 Hz to 200 kHz (incl.); II region of 20 to 45 Hz (ex); III area of more than 200 kHz to 1 MHz (inclusive). Frequency of calibration of 1 kHz.
Maximum permissible error of the instrument at a frequency of 1 kHz calibration, expressed as a percentage of the upper limit established by sub-band measurements is ± 2,5%.
Variation readings does not exceed 1.5%.
Changes evidence and permissible error of the instrument in the working frequency regions, expressed as a percentage of the upper limit established by sub-band measurements do not exceed the values given in Table. 1.
Change readings Millivoltmeter V3-55 caused by a deviation of 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 K temperature change.
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 1 Mohm. Input capacitance of the device is less than 30 pF. Capacity imparted cable not more than 80 pF.
Response time the device is less than 4 seconds. Warm-up time 1 min. The device maintains its performance under its power from two elements 373 3 V +0.1 / -0.6 V or via the power supply from the AC voltage of 220 ± 22V at 50 ± 0,5 Hz, and harmonic content up to 5% .
Current consumption device Millivoltmeter V3-55 of the two elements 373, does not exceed 85 mA. The power consumed by the device from the network through the power supply at rated voltage does not exceed 4.5 A.
Continuous operation of the device is allowed Millivoltmeter V3-55 operational conditions for 16 hours while maintaining their performance. Continuous operation of the device in circuits with DC. Please keep in mind that the amount of DC voltage and rms ac voltage component shall not exceed 350 V.
Dimensions, not more 145h110x254 mm. Dimensions of packing box 369x210x203 mm max. Overall dimensions of shipping containers no more than 648x602x458 mm. Unit weight (with elements 373) is not more than 2.2 kg. Weight with packing box no more than 9.0 kg. Weight with transport container is not more than 30 kg. The average service life of 10 years. Average life 10,000 hours