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V7-37

12 499 RUB
4 999 UAH
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5 pieces

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Voltmeter V7-37 (V737, V-7-37, V 7 37, b7-37, V-737, V 737, b737, b-7-37, b 7 37, b-737, b 737)

Voltmeter V7-37 is designed to measure DC voltage, rms AC voltage sine wave, AC and DC with an external shunt electrical resistance.
Technical characteristics of the instrument voltmeter V7-37:
The operating conditions of use of the instrument:
The ambient temperature of - 10 º C to +40 ° C;
Relative humidity 80% at 25 ° C;
Atmospheric pressure from 86kPa to 106kPa (from 650mm.rt.st. 800mm.rt.st up.)
Mains supply 220V ± 22V 50Hz ± 0,5 Hz and harmonic content up to 5%;
The range of the measured device B7-37 DC voltage from 10 V to 1000 V -4 overlapping sub-bands 0.1, 1B; 10V 100V and 1000V;
The range of the device being measured AC voltage input jack from 10 mV to 1000 V 0.1 V overlapped sub-bands, 1V, 10V, 100V and 1000V. Measured range voltmeter V7-37 probe alternating voltage from 0.1 V to 1000 V overlaps sub-bands 1, 10V and 100V. By applying a voltage divider DN-519 (1:100) provided AC voltage measurement from 100V to 1000V;
The range of measuring devices with a DC shunt from 10 -8 A to 10A overlapping sub-bands 10uA, 100uA, 1mA, 10mA, 100mA, 1A and 10A. In all sub-bands at the current values ​​of equal sub-band upper limit of the measurement, the voltage drop is 0.1;
Measured range voltmeter V7-37 with AC shunt from 10 -8 A to 10A sub-bands overlap 10uA, 100uA, 1mA, 10mA, 100mA, 1A and 10A. In all sub-bands at the current values ​​of equal sub-band upper limit of the measurement, the voltage drop of 0.1 V;
The range of measured electrical resistance of 1 ohm to 10 megohms overlapping sub-bands 1 k, 10 k, 100 k, 1000 ohms and 10 megohms;
The quantization step (discrete) of the device on the first sub-band measurements:
- 10 -4 V - when measuring input jack DC and AC voltage;
- 10 -5 - when measuring probe;
- 1 ohm - measurement of the electric resistance;
- A 10 -8 - when measuring AC and DC;
B7-37 measures AC voltage within the following frequency ranges:
when measuring the input jacks:
- 20Hz-50kHz sub-bands at 0.1 V, 100 V;
- 20Hz-10kHz sub-band to 1000 V;
When measuring probe:
- 10 kHz to 1000 MHz sub-bands 1B-100B;
- 10 kHz-300MHz sub-band to 10V with a divider 1:100 DN-519 (up to 1000V);
Frequency calibration of B7-37:
- 1 kHz - when measuring input jack;
- 100 kHz - when measuring probe;
The normal range of frequencies:
- 45Hz-20kHz - when measuring the input jacks on the sub-bands in the 0.1-100V;
- 20Hz-10kHz - when measuring the input jacks on the sub-band 1000 V;
- 10kHz-50MHz - when measuring probe on the sub-band 1B-100B;
- 50kHz-50MHz - when measuring probe on the sub-band-splitter 10V DN-519;
Operating frequency range V7-37:
- 45Hz and 20Hz-20kHz-50kHz - when measuring the input jacks on the sub-bands in the 0.1-100V;
- 50 MHz-1000 MHz in the measurement probe on the sub-bands 1B-100B;
- 10 kHz, 50 kHz and 50 MHz-300 MHz - when measuring probe for sub-band 10 with a divider DN-519;
Voltmeter V7-37 shunt measures the alternating current in the frequency range from 20 Hz to 1 kHz;
The frequency of 1 kHz calibration;
The basic relative error of the instrument when measuring DC voltage does not exceed the values ​​calculated by the formulas:
- For subbands 0, 1V, 1V:
δ = ± [0,25 +0,2 (U a / U x -1)];
- The subband-10V-1000V:
δ = ± [0,5 +0,2 (U a / U x-1)]
where δ - the limit of relative error in%;
U to - the value of sub-band measurements in B;
U's - reading device in B;
The main relative error of V7-37 in normal frequency ranges do not exceed the values ​​calculated by the formulas given in Table. 1;
 
Table 1: Main relative error in the normal frequency regions
Frequencies
The limit of relative error
Sub-bands for voltage measurements
input jack
0.1V, 1V
10V, 100V
1000V
20Hz to 10kHz
-
-
± [1,5 + 0,2 (U a / U x-1)]%
from 45Hz to 20kHz
± [1,0 +0,2 (U a / U x-1)]%
± [1,5 + 0,2 (U a / U x-1)]%
-
from 10 kHz to 50 MHz
-
-
-
from 50 kHz to 50 MHz
-
-
-
Frequencies
The limit of relative error
Sub-bands for voltage measurements
probe 1V, 10V, 100V
probe with DN-519
20Hz to 10kHz
-
-
from 45Hz to 20kHz
-
-
from 10 kHz to 50 MHz
± [2,5 +0,5 (U a / U x-1)]%
-
from 50 kHz to 50 MHz
-
± [4 + (U a / U x-1)]%

Table. 1 δ - the limit of relative error in%;
U to - the value of sub-band measurements in B;
U's - reading device in B;
The main relative error of V7-37 with shunt measurement DC max values ​​calculated by the formulas:
- The subband-10uA, 100uA:
δ = ± [0,4 +0,2 (I a / I x-1)];
- The subband-1mA, 10mA:
δ = ± [0,6 +0,2 (I a / I x-1)];
- Subband 100mA 1A, 10A:
δ = ± [1 +0,2 (I a / I x-1)]
where δ - the limit of relative error in%;
I to - the value of sub-band measurements in A;
I's - the instrument reading in A;
The main relative error of V7-37 with a shunt in the measurement of alternating current does not exceed the values ​​calculated by the formulas:
- The subband-10uA, 100uA, 1m A, 10mA:
δ = ± [1,5 +0,2 (I a / I x-1)];
- For sub-bands 100mA, 1A, 10A:
δ = ± [2 +0,2 (I a / I x-1)];
where δ - the limit of relative error in%;
I to - the value of sub-band measurements in A;
I's - the instrument reading in A;
The main relative error of V7-37 to measure electrical resistance of not more than the values ​​calculated by the formulas:
- For sub-bands 1 k, 10 k, 100 k, 1000 k:
δ = ± [1 +0,2 (R a / R x -1)];
- For sub-band 10 MW:
δ = ± [1 +0,2 (R a / R x-1)]
where δ - the limit of relative error in%;
To R - value of sub-band measurements in ohms;
R's - reading device in ohms;
The relative error of the voltmeter V7-37 in the working frequency ranges when measuring AC voltage input jack does not exceed the values ​​calculated by the formulas given in Table. 1a.
 
Table 1a relative error in the working frequency ranges when measuring AC voltage input jack
Frequencies
The limit of relative error
Sub-bands for voltage measurements
0.1V, 1V, 10V, 100V
probe 1V, 10V, 100V
probe with DN-519
20Hz to 45Hz
from 20 kHz to 50 kHz
± [2,5 +0,2 (U a / U x-1)]%
-
-
± [6 + 4 (U a / U x -1)]%
± [10 + 4 (U a / U x -1)]%
from 10kHz to 50kHz
from 50MHz to 300MHz
-
-
-
-
-
-
from 50MHz to 600MHz
from 600MHz to 800MHz
-
-
± [6 +4 (U a / U x-1)]%
± [10 +4 (U a / U x-1)]%
-
-
from 800MHz up to 1000MHz
-
± [20 +4 (U a / U x-1)]%
-

Table. 1a δ - limit relative error in%;
U to - the value of sub-band measurements in B;
U's - reading device in B;
Change readings caused by changes in ambient temperature from normal to anyone within the working temperature range, no more than the limit value of basic error for every 10 ° C change in temperature;
The active input impedance V7-37:
- 10 MW ± 1 MW when measuring DC voltage, AC voltage input jack at the frequency of 45 Hz;
- Not less than 75 ohm - the measurement probe at a frequency of 100MHz;
- Not less than 100 ohms - when measuring probe with a divider DN-519 at a frequency of 100 MHz;
Input capacity does not exceed:
- 100pF - when measuring input jack;
- 1.5 pF - when measuring probe;
- 3pF - when measuring probe with a divider DN-519;
Time for reading voltmeter V7-37 does not exceed:
- 2c - V dc;
- 4c - when measuring AC voltage;
- 3c - the measurement of electrical resistance on the subbands 1 kW, 10 kW, 100 ohms and 1000 ohms;
- 10s - when measuring the electrical resistance in the sub-band 10 MW;
V7-37 retains its specifications within the standards after exposure to no more than ten-10s handling AC or DC voltage measurement input jack, but not more than 1,5 kV;
Warm-up time 15 min;
The device V7-37 suppresses the interference of normal form's AC Power frequency when measuring DC voltage of at least 35 dB at a voltage equal to ten times the noise sub-band sub-band to 0.1 V, 10 V and the value of the sub-band subband-1B, 100B. At the sub-band sum of the measured voltage 1000V and voltage noise should not exceed 1000 V;
Voltmeter retains its specifications when powered by AC 220V ± 22V, 50 Hz ± 0,5 Hz;
The total power consumption of the network at the maximum voltage does not exceed 30V ∙ A;
The active power consumed by the network at the maximum voltage does not exceed 20W;
V7-37 allows continuous operation under the operating conditions for 8h;
Overall dimensions - no more 248x86x282mm;
Weight - no more than 2.4 kg.

Photos V7-37

V7-37 (B7-37) device image.
V7-37 (B7-37) device image.
V7-37 (B7-37) front view.
V7-37 (B7-37) front view.
V7-37 (B7-37) side view.
V7-37 (B7-37) side view.
V7-37 (B7-37) rear view.
V7-37 (B7-37) rear view.
V7-37 (B7-37) overhead view.
V7-37 (B7-37) overhead view.
V7-37 (B7-37) bottom view.
V7-37 (B7-37) bottom view.


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