Radiometric devices >> voltmeters

V7-41 (b7-41)

11 999 RUB
9 599 UAH
available:
6 pieces

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Voltmeter V7-41 digital versatile (V741, V-7-41, V 7 41, V7-41, V-741, V 741, b741, b-7-41, b 7 41, b-741, b 741)
 
Voltmeter V7-41 digital versatile is designed to measure basic electrical quantities: voltage and DC and AC, and DC resistance.
 
Technical characteristics of the devices voltmeter V7-41 digital versatile:
 
Operating conditions:
power supply
- 220V ± 22V 50Hz ± 0,5 Hz;
- 9V battery strain of "Crohn's VC" or "Corundum";
- Relative humidity up to 80% at temperatures up to 298K (+25 ° C);
- Ambient temperature - from 273K to 313K (0 º C to +40 ° C);
The instrument voltmeter V7-41 digital versatile provides measuring voltage, resistance and current in normal conditions in accordance with the data presented in Table 1;
The instrument measures the value srednevypryamlennoe AC voltage, and scaled to the rms value.
Comments:
- General jack allows the unit relative to the ground voltage DC or AC up to 500V;
- Constant voltage component when measuring AC voltage no more than 400;
 
Table 1 Parameters of the measurement instrument voltmeter V7-41 digital versatile voltage, resistance and current in normal conditions
Measurand
The range of measured values, V, Ohms, mA
The limits of measurement
Maximum permissible inaccuracy
Note
Direct current voltage
10 -4 -10 3
200mV, 2V, 20V, 200V, 1000V
± [0,2 +0,1 (U n / U x -1)]
 
AC voltage frequency 20Hz-40Hz
10 -4 -750
200mV, 2V, 20V, 00V, 750V
± [2,0 +0,25 (U n / U x -1)]
Kg ≤ 2%
AC voltage frequency 40Hz-5kHz
10 -4 -750
200mV, 2V, 20V, 200V, 750V
± [0,8 +0,2 (U n / U x -1)]
Kg ≤ 0,8%
AC voltage frequency of 5 kHz, 20 kHz
10 -4 -750
200mV, 2V, 20V, 200V
± [1,5 +0,25 (U n / U x -1)]
Kg ≤ 1,5%
750V
± [4,0 +0,25 (U n / U x -1)]
Kg ≤ 4,0%
AC voltage frequency 20kHz-100kHz
10 -4 -200
200mV, 2V, 20V, 200V
± [4,0 +0,5 (U n / U x -1)]
Kg ≤ 4,0%
DC Resistance
10 -4 -2 ∙ April 10
200 Ohm
± [0,4 +0,15 (R n / R x 1)]
 
2 k, 20 k ohms, 200 ohms, 2 MW
± [0,2 +0,1 (R n / R x 1)]
20 megohms
± [1,0 +0,2 (R n / R x 1)]
DC output
10 -4 -10 4
200mkA, 2mA, 20mA, 200mA, 2A
± [0,4 +0,1 (I n / I x 1)]
 
10A
± [1,0 +0,1 (I n / I x 1)]
AC current frequency 20Hz-40Hz
10 -4 -10 4
200mkA, 2mA, 20mA, 200mA, 2A
± [2,0 +0,25 (I n / I x 1)]
Kg ≤ 2%
10A
± [2,5 +0,25 (I n / I x 1)]
Kg ≤ 2,5%
AC current frequency 40Hz-1kHz
10 -4 -10 4
200mkA, 2mA, 20mA, 200mA, 2A
± [1,0 +0,2 (I n / I x 1)]
Kg ≤ 1,0%
10A
± [1,5 +0,2 (I n / I x 1)]
Kg ≤ 1,5%
Current AC 1kHz-5kHz
April 10 -2 ∙ March 10
200mkA, 2mA, 20mA, 200mA, 2A
± [1,0 +0,2 (I n / I x 1)]
Kg ≤ 1,0%
AC current frequency of 5 kHz, 10 kHz
10 -4 -2 ∙ February 10
200mkA, 2mA, 20mA, 200mA
± [2,0 +0,25 (I n / I x 1)]
Kg ≤ 2%
 
where K - THD; Ux, Rx, x - the reading device or a nominal value of the measure (for verification), voltage, resistance, amperage; Un, Rn, In - the limits of measuring voltage, resistance, amperage (Un limit for 1000V DC and 750V AC is equal to 2000V, In 10A to the limit equal to 20 A);
The limit of additional measurement error of the instrument voltmeter V7-41 digital versatile (change out) when the ambient temperature from the normal to the limit values ​​in the temperature range does not exceed half the limit of permissible basic error for every 10 K;
The input resistance of the device:
- 10 MW ± 0,1 MW - when measuring DC voltage;
- 1 MW ± 0,1 MW - when measuring AC voltage;
Input capacitance of the instrument voltmeter V7-41 digital versatile when measuring AC voltage does not exceed 100 pF;
Force the input current instrument for measuring the DC voltage does not exceed 0.1 mA;
The maximum value of the voltage drop measured on the instrument voltmeter V7-41 digital versatilel resistance does not exceed 5.5;
The device can withstand for 1 minute overload voltage and the power of direct and alternating current in accordance with Table 2;
The device provides attenuation of external noise, 50 Hz ± 0,5 Hz when measuring DC voltage:
- The normal form of not less than 40 dB noise level at not to exceed the limit of measurement Un and not more than 100V;
- The general form of at least 60 dB at 1 k unbalance input, at a voltage not exceeding 250V interference;
The instrument voltmeter V7-41 digital versatile provides a continuous audible indication when measuring the resistance of 200 ohms;
The device provides a visual indication of battery discharge, the polarity of the measured voltage and current, as well as going beyond the limit of measurement except upper limits of measurement of voltage and AC and DC;
 
Table 2: Overload, which maintains the instrument voltmeter V7-41 digital versatile for 1 minute voltage and power AC and DC
Genus of
Measurement limit
Overload
Constant voltage
Rms alternating voltage
Value
Indication
Value
Indication
Measure the DC voltage
200kV
350V
Visual, audible
350V
Visual,
Sound
2B, 20V, 200V
1200V
Visual, audible
840V
Visual,
Sound
1000V
1200V
-
840V
-
Measurement of AC Voltage
200mV, 2V
400
-
100V
Visual,
Sound
20V, 200V
400
-
900V
Visual,
Sound
750V
400
-
900V
-
Measurement of DC resistance
200 ohms 2 ohms, 20 ohms, 200 ohms, 2 MW, 20 MW
100V
Sound
100V
Sound
Measurement of the DC
200mkA, 2mA, 20mA, 200mA
-
-
-
-
(2a)
-
-
-
-
10A
-
-
-
-
 
Genus of
Measurement limit
Overload
Direct current
Alternating current
Value
Indication
Value
Indication
Measure the DC voltage
200kV
-
-
-
-
2B, 20V, 200V
 
 
 
 
1000V
-
-
-
-
Measurement of AC Voltage
200mV, 2V
 
 
 
 
20V, 200V
 
 
 
 
750V
 
 
 
 
Measurement of DC resistance
200 ohms 2 ohms, 20 ohms, 200 ohms, 2 MW, 20 MW
-
-
-
-
Measurement of the DC
200mkA, 2mA, 20mA, 200mA
1A
Visual, audible
1A
-
(2a)
3A
Visual, audible
3A
 
10A
20A (10 sec)
-
20A (10 sec)
-
 
Time of measurement instrument voltmeter V7-41 digital versatile does not exceed:
- 2c - when measuring the voltage and constant current;
- 6s - the measurement of voltage and AC current and DC resistance at around 200 ohms, 2 ohms, 20 ohms, 200 ohms, 2 MW;
- 20s - when measuring DC resistance at the limit of 20 MW;
Electrical isolation between the network chains connected mains supply unit voltmeter V7-41 digital versatile and general jack stand for 1 minute without breakdown in the normal test voltage alternating current frequency of 50 Hz, the mean value is equal to 3000V;
The insulation resistance of network circuits mapped on a common power supply socket device must be in normal circumstances at least 20 megohms, at +40 ° C and relative humidity of 80% is not less than 5 MW;
The instrument voltmeter V7-41 digital versatile provides its specifications within the standards set in TU, after the time of establishing the mode of 1 minute;
The device allows for continuous operation under the operating conditions during the time of not less than 24 hours while maintaining its performance at the limits established in specifications;
The instrument voltmeter V7-41 digital versatile maintains its specifications within the rules established by the specifications, in battery voltage 6V-9V or AC 220V ± 22V, 50Hz ± 0,5 Hz and harmonic content up to 5%;
The power consumed by the device from the mains supply at the rated voltage does not exceed 5 V ∙ A; current consumption of the battery does not exceed 8mA;
Voltage industrial interference generated by the instrument does not exceed 66dB at frequencies from 150 kHz to 30 MHz;
MTBF instrument voltmeter V7-41 digital versatile - at least 30,000 hours;
Overall dimensions, no more than:
- Unit - 50h90h178mm;
- Shipping container - 200x330x400mm;
Unit weight voltmeter V7-41 digital versatile power supply not included - no more than 0.5 kg;
Weight of the device with transport container - no more than 7kg;
Unit weight voltmeter V7-41 digital versatile power source - no more than 0.7 kg.

Photos: V7-41 (b7-41)

V7-41 (b7-41) device image.
V7-41 (b7-41) device image.
V7-41 (b7-41) view panel of the device.
V7-41 (b7-41) view panel of the device.
V7-41 (b7-41) side view №1.
V7-41 (b7-41) side view №1.
V7-41 (b7-41) side view №2.
V7-41 (b7-41) side view №2.
V7-41 (b7-41) side view №3.
V7-41 (b7-41) side view №3.
V7-41 (b7-41) bottom view.
V7-41 (b7-41) bottom view.


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