V7-81 (B7-81) V7-81 (B7-81)
4.9 63

V7-81 voltmeter universal designed to measure voltage and constant current, root mean square ( RMS ) voltage and RMS AC current, electrical DC resistance, frequency and period of electrical signals.
Measuring range:
- A DC voltage - from 10 mcV to 1000 V;
- RMS AC voltage - from 1 mV to 750 V;
- DC Current - 0,1 mcA to 20 A;
- RMS AC current - 10 mcA to 20A;
- DC resistance - from 10 mOhm to 1 GOhm;
- Signal frequency - 10 Hz to 1 MHz.

Radiometric devices
voltmeters (V2-, V3-, V4-, V7-, V8-, V9-, F and others)

Production under the order: any quantity.


on request

  include VAT

Found cheaper?

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12 months.

Warranty extension up to 5 years. 

Terms of delivery:

To all regions of the country, international delivery. 

Found cheaper?

Let us know. Our price is the best. 


12 months.

Warranty extension up to 5 years. 

Terms of delivery:

To all regions of the country, international delivery. 

Technical characteristics

Voltmeter V7-81

Also, this device can be called: V781, V7 81, V-781, V 781, b7-81, b781, b7 81.

V7-81 voltmeter universal designed to measure voltage and constant current, root mean square (RMS) voltage and RMS AC current, electrical DC resistance, frequency and period of electrical signals.

Scope: development, testing, maintenance and repair of electronic equipment designs on objects sphere of defense, security and industrial facilities.

Specifications V7-81:

DC voltage:

- Measuring range - 10 mV to 1000 V;

- The measurement error - ± (0,0028-0,0043)%.

RMS AC voltage:

- Measuring range - from 1 mV to 750 V;

- Frequency range - 10 Hz to 10 MHz;

- The measurement error:

- F at 10 Hz to 100 kHz - ± (0,09-0,7)%;

- If F = (100-500) kHz - ± (0,3-1,5)%;

- If F = (0,5-10) MHz - ± (1,5-6)%.

Current DC:

- Measuring range - from 0,1 mA to 20 A;

- The measurement error - ± (0,012-0,2)%.

RMS AC current:

- Measuring range - from 10 mA to 20 A;

- Frequency range - 10 Hz to 5 kHz;

- The measurement error - ± (0,11-0,6)%.

DC resistance:

- Measuring range - from 10 mOhm to 1 GOhm;

- The measurement error:

- For R 10 milliohms to 10 MW - ± (0,007-0,015)%;

when R 10 Mohm to 1 GOhm - ± (0,2-5)%.

Signal frequency:

- Measuring range - 10 Hz to 1 MHz;

- The measurement error - ± (0,01% Fx 1 Hz).

Display Format V7-81 - 6,5 bits.

Measuring functions - DCV, DCI, ACV, ACI, R, F.

Extended frequency and dynamic ranges.

LED display with a size of 14×4,7 mm.

Four-line dot matrix LCD display with backlight.

External calibration measures on all bands at all physical quantities measured from the front panel or automatically as part of the AIS.

8 the measurement programs.

4 management support program.

B7-81 speed - 500 ms.

Sound analyzer.

The self.

Lifetime - no less than 15 years.

MTBF - not less than 15 000 h.

Dimensions - no more than 291×308×109,5 mm.

Weight - no more than 4,5 kg.

V7-81 voltmeter universal is a laboratory grade instrument accuracy with greater functionality, providing work independently and as part of automated measuring systems. The device can be used for precise measurements of physical quantities, and for the calibration and verification of measuring instruments working.

Voltmeter V7-81 equipped with interface RS-232C.

Operating conditions V7-81:

Ambient temperature - from +5° C to +40° C.

Relative humidity at a temperature of +25° C to - 80%.

Atmospheric pressure - 630 mm. hg. art. to 800 mm. hg. art.

Power supply AC - (220 ± 22) V.

Frequency AC - (50 ± 0,5) Hz.

Power consumption - no more than 20 V·A.

Photos: V7-81 (B7-81)

V7-81 (B7-81) device image.

V7-81 (B7-81) device image.

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