V7-40/1 V7-40/1 Voltmeter V7-40/1 digital universal
4.9 63

Voltmeter V7-40/1 digital universal (V740/1, V-7-40/1, V 7 40/1, b7-40/1, V-740/1, V 740/1, b740/1, b-7-40/1, b 7 40/1, b-740/1, b 740/1)

Is designed to measure AC and DC voltage, DC and AC currents and electrical resistance, as well as to communicate with the public channel (CPC). Used to provide measurements for setup, testing and operation of various electronic equipment and allow you to use them as stand-alone or as part of information-measuring systems. It can be used in stationary and mobile objects that do not work on the go.

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Radiometric devices
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voltmeters V7
V7-40 (B7-40) device image.

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Product information updated 02 October 2024.

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Warranty:

12 months.

Warranty extension up to 5 years. 

Terms of delivery:

To all regions of the country, international delivery. 

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Product information updated 02 October 2024.

Found cheaper?

Let us know. Our price is the best. 

Warranty:

12 months.

Warranty extension up to 5 years. 

Terms of delivery:

To all regions of the country, international delivery. 

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Technical characteristics

Voltmeter V7-40/1 digital universal (V740/1, V-7-40/1, V 7 40/1, b7-40/1, V-740/1, V 740/1, b740/1, b-7-40/1, b 7 40/1, b-740/1, b 740/1)

Voltmeter V7-40/1 digital versatile designed to measure AC and DC voltage, DC and AC currents and electrical resistance, as well as to communicate with the public channel (CPC). Used to provide measurements for setup, testing and operation of various electronic equipment and allow you to use them as stand-alone or as part of information-measuring systems.
V7-40/1 can be used in stationary and mobile objects that do not work on the go.
Technical characteristics of the instrument voltmeter V7-40/1 digital universal:
The voltmeter is designed to operate on AC voltage 220V ± 22V, 50Hz ± 0,5 Hz with harmonic content up to 5% and ± 11V voltage 220V, frequency of 400 Hz ± 10 Hz with harmonic content up to 5%;
Ambient temperature - from -30 º C to +50 º C;
Relative humidity 98% at 25 º C;
Voltmeter V7-40/1 provides a DC voltage of positive and negative polarities of the value - 0.01 mV to 1000 V and the measurement range is 200mV, 2V, 20V, 200V, 2000V;
The limits permitted by the basic error in the measurement of the voltmeter DC:
- ± [0,05 +0,02 (U a / U-1)]% for the range 200mV, 2V;
- ± [0,1 +0,02 (U a / U-1)]% for the range 20V, 200V, 2000V,
where U to - the final value of the limit set of measurements; U - the measured voltage at the input;
B7-40/1 maintains all within measurement limits except 2000V 200V for 1 minute, a voltage equal to the final value of the next higher detection limit. Voltmeter stand for 1 minute at the limit of 200V voltage 1000V, 2000V to the limit - the voltage 1200V;
Input impedance voltmeter when measuring DC voltage is 10 megohms ± 0,1 MW on all ranges of measurements;
Input impedance of the high voltage divider DNV is 500 MW ± 25 MW;
Voltmeter V7-40/1 with a high-voltage divider, DNV provides a DC voltage of 1 kV to 30 kV, with the voltmeter match:
- 0,001 U DNV - V dc voltmeter with a high-voltage divider DNV;
- 0,0005 U DNV - V dc voltmeter with a high-voltage divider and shunt DNV "K2";
- 0,0002 U DNV - V dc voltmeter with a high-voltage divider and shunt DNV "K3";
where U DNV - the measured voltage at the input of the high voltage divider DNV;
The limits permitted by the basic error in the measurement of DC voltage:
- Voltmeter with a high-voltage divider DNV
± [0,4 +0,04 (U a / U-1)]%
- Voltmeter with a high-voltage dividers and shunts DNV "K2"
± [0,4 +0,04 (U a / U w1 -1)]%
voltmeter with a high-voltage divider and shunt DNV "short-circuit"
± [0,4 +0,04 (U a / U w2 -1)]%
where U to - the final value of the limit set of measurements voltmeter V7-40/1 (200 mV, 2 mV, 20 mV, 200 V);
U = 0,001 U DNV;
U w1 = 0,0005 U DNV;
U w2 = 0,0002 U DNV;
where U DNV - the measured voltage at the input of the high voltage divider DEV;
When measuring DC voltage rejection ratio of normal form voltmeter on the interference frequency 50 Hz, 400 Hz - not less than 40 dB;
When measuring DC voltage rejection ratio, common mode DC voltage voltmeter V7-40/1 - not less than 90 dB at 1 ohm resistance unbalance;
The voltmeter measures the mean-square value of AC voltage arbitrary waveform from 200V to 2 mV in the frequency range from 20 Hz to 100 kHz, more than 200V to 500V at frequencies from 20 Hz to 5 kHz, and has a limit of measurement: 200mV, 2V, 20V, 200V, 2000V. Crest factor of the measured voltage to a ≤ 3, and the maximum value of the input voltage voltmeter no more than 1000 V;
The limits permitted by the basic error of V7-40/1 in the measurement of AC-form with the values ​​of the measured voltage of up to 0,01 U U are equal to:
- ± [1 +0,1 (U a / U-1)]% in the frequency range 20Hz-40Hz;
- ± [0,6 +0,1 (U a / U -1)]% in the frequency range 40Hz-10KHz;
- ± [1 +0,1 (U a / U -1)]% in the frequency range 10kHz-20kHz;
- ± [5 +0,15 (U a / U-1)]% in the frequency range 20kHz-50kHz;
- ± [10 +0,4 (U a / U-1)]% in the frequency range 50kHz-100kHz;
to within 200mV of measurements; 2B, 20B, 200B;
- ± [1 +0,1 (U a / U-1)]% in the frequency range 20 Hz-40 Hz and 1 kHz, 5 kHz;
- ± [0,6 +0,1 (U a / U-1)]% in the frequency range 40Hz-1kHz;
at the limit of measurement 2000V,
where U to - the final value of the limit set of measurements; U-value of the measured voltage at the input;
Voltmeter V7-40/1 with variable voltage divider cash flow provides a measure of the mean square value of AC voltage by a factor of arbitrary shape and amplitude for the <3 from 500V to 1000V in the frequency range from 20 Hz to 1 kHz, with a maximum value of the input voltage divider may be a maximum 3000V4
Voltmeter readings correspond to 0,001 U of cash flow,
where U of cash flow - the measured voltage at the input AC voltage divider DPN;
The limits permitted by the basic error voltmeter V7-40/1 with variable voltage divider cash flow as measured rms ac voltage of arbitrary shape:
- ± [1 +0,1 (U a / U-1)]% in the frequency range 20Hz-40Hz;
- ± [1 +0,1 (U a / U-1)]% in the frequency range 40Hz-1kHz,
where U to - the final value of the limit set of measurements voltmeter; U = 0,001 CF;
The input resistance of V7-40/1 in the measurement of AC voltage is equal to 1 MW ± 0,1 MW.
Input shunt capacitance of less than 50pF, capacitance measurement accuracy of ± 5%;
Voltmeter V7-40/1 with RF probe provide a measure of the mean square value of the voltage sine wave in the frequency range of 50kHz-1000MHz. The ranges of the measured voltages with a voltmeter RF probe:
from 0.1 V to 15 V in the frequency range from 50kHz to 10MHz;
from 0.1 to a value determined by the formula
U max = (1,5 ∙ 10 August) / ƒ,
where ƒ-frequency voltage measured in the frequency range from 10MHz to 50MHz from 0.1V to 3V in the frequency range of 50MHz-1000MHz;
The limits permitted by the basic error voltmeter V7-40/1 with RF probe in the measurement of the mean square value of AC voltage sine wave:
- ± [10 +0,6 (U a / U-1)]% in the frequency range 50 kHz-50 MHz,
where U k - value of AC voltage equal to 15 V; U - value of the measured voltage to the RF input of probe B;
- ± [10 +3 (U a / U-1)]% in the frequency range of 50MHz-300MHz;
- ± [20 +2 (U a / U-1)]% in the frequency range of 300MHz-800MHz;
- ± [30 +2 (U a / U-1)]% in the frequency range of 800MHz-1000MHz;
where U to - the final value of the AC voltage measured with a voltmeter with high frequency probe equal to 3V; U - the measured voltage at the input RF probe;
When measuring AC voltmeter V7-40/1 with RF probe readout of measurement results of measurements carried out on the range 200mV, 1V, 2V, 20V mode DC voltage;
Input impedance of the RF probe at a frequency of 50 kHz - not less than 150 ohms;
Input shunt capacitance of less than 5pF. Measurement error of the input resistance and input capacitance of less than ± 10%;
Voltmeter V7-40/1 provides a measurement of DC current of 0.01 mA to 2000mA (Bypassed "10A", up to 10A) and has a measurement range limits: 200uA, 2mA, 20mA, 200mA, 2000mA;
The limits permitted by the basic error voltmeter for measuring the DC:
- ± [0,2 +0,02 (I a / I-1)]% on all ranges of measurements
where I to - the final value of the limit set of measurements; I - force value measured dc power input;
- ± [0,4 +0,02 (I a / I-1)]% of the shunt "10A"
where I to - the final value of the measured voltage meter with a shunt DC current equal to 10A; I - force value measured dc power input, A;
Voltmeter V7-40/1 provides a measure of the mean square value of AC current arbitrary waveform from 2mkA to 200mA in the frequency range 40Hz-20kHz, and more than 200mA to 2000mA (Bypassed "10A", up to 10A) in the frequency range of 40Hz-2kHz and has a limit of measurement: 200uA, 2mA, 20mA, 200mA, 2000mA;
The limits permitted by the basic error in the measurement of the mean square value of AC current arbitrary waveform with the values ​​of the measured current of up to 0,01 I I to:
- ± [1 +0,1 (I a / I-1)]% in the frequency range 40Hz-10KHz;
- ± [2 +0,1 (I a / I-1)]% in the frequency range of 10kHz to 20kHz range for measurements 200uA, 2mA, 20mA, 200mA;
- ± [1 +0,02 (I a / I-1)]% in the frequency range of 40Hz-2kHz at the limit of measurement and 2000mA with a shunt 10A,
where I to - the final value of the limit set dimension (for voltmeters with a shunt to I = 10A); I - force value measured AC input;
Voltmeter V7-40/1 provides a measurement of the electrical resistance of 0.01 Omdo 20 MW and has the measurement range: 200 ohms, 2 ohms, 20 ohms, 200 ohms, 2000 ohms, 20 MW;
The limits permitted by the basic error voltmeter to measure electrical resistance:
- ± [0,15 +0,05 (R a / R-1)]% in the range of 200 ohms, 2 ohms, 20 ohms, 200 ohms, 2000 ohms;
- ± [0,5 +0,1 (R a / R-1)] 20% at the limit MOhm
where R is a - the final value of the limit set of measurements; R - value of the measured electrical resistance at the input;
DC current flowing through the measured resistance is equal to the values ​​given in Table 3;
Table 3 DC current flowing through the resistance being measured
 
The limit of resistance measurement
Amperage
200 ohms
1mA ± 0,05 mA
2 k
1mA ± 0,05 mA
20 kohms
1 uA ± 0,05 mA
200 k
1 uA ± 0,05 mA
2000 ohms
1 uA ± 0,05 mA
20 M
1nA ± 0,05 nA

The maximum value of the DC voltage to the measured resistance (voltage on the open sockets) not more than 10V. Voltage measurement error not exceeding 5%;
Voltmeter V7-40/1 with the measuring cable K1 measures a constant voltage of 0.01 mV to 40 V and RMS AC voltage arbitrary waveform amplitude by a factor of K and N ≤ 2 mV to 40 V from a frequency range of 20Hz-100kHz;
Voltmeter maintains its specifications within the standards set specifications, when powered from the mains AC 220V ± 22V, 50Hz ± 0,5 Hz with harmonic content up to 5% or 220V ± 11V, frequency of 400 Hz ± 10 Hz with harmonic content up to 5%;
Power consumed by the V7-40/1 from the power supply at rated voltage not exceeding 30 V ∙ A. The error of measurement of power consumption is not more than ± 5%;
Life more than 8000 hours. The bodies of multiple control and regulation provide 30,000 switching cycles;
Gamma-percent life voltmeter B7-40/1 - of at least 10,000 hours at γ = 90%;
Gamma-percent service life of at least 10 years old at γ = 90%;
Average recovery time less than 10 hours;
The probability of no latent failures not less than 0.95 for calibration interval 12 months, with an average utilization rate of 0.04;
Dimensions voltmeter - 304h80h320mm;
Weight V7-40/1 - no more than 5.5 kg;
The device V7-40/1 has a built in timer operating time. Operating time counter records the time of use in temperatures ranging from -10 º C to +50 ° C.
Rate the product: V7-40/1
Number of views: 2204
Product rating: 4.9
Number of grades: 506
* rating and all product statistics are updated once a month; information is current as of 16 October 2024

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