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V7-18 (B7-18)

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    Voltmeter V7-18 (V7-18, v 7-18, v-7-18 v 7 18; v7-18; v7 18; v 7-18; v-7-18; v 7 18)

    Voltmeter V7-18 - Universal panel meter for measuring DC voltage, DC current, DC resistance, frequency, sinusoidal oscillations of electrical f ormy, AC voltage (in co-operation with the converter B9-1).

    Range:
    - Constant voltage - 0.1 V - 1 kV;
    - DC - 1 uA - 100A;
    - Resistance - the 1st - 10MOm;
    - Frequency - 10Hz - 1MHz;
    - AC voltage - 0.01 V - 100 V (common with transmitter B9-1).
    Overall dimensions - 190 × 135 × 475mm.
    Weight - no more than 25kg.
 
    Specifications V7-18
 
    Voltmeters V7-18 allow the basic error of measuring DC voltage, which is determined by the formula:
 
,
    where: - δ - basic accuracy,%;
    - N - number one - 0.02, 0.03, 0.3, 1c corresponding measurement time, and with 0.1 to 0.01;
    - - The measured voltage;
    - - Set a limit of measurement B.
    Voltmeter V7-18 allow the basic error in the measurement of current and resistance, calculated by the formulas:
 
- By between 1 uA to 1 mA and from 1K to 0.1 MW,
 
- To within 10 mA and 10MOm,
 
    where: - δ - basic accuracy,%;
    - N - number one - 0,1, 2, 1c corresponding measurement time, and with 0.1 to 0.01;
    - - The measured current or resistance;
    - - Set a limit of measurement.

    The device B7-18 with admissible repents basic frequency measurement error, calculated by the formula:
 
,
    where - δ - basic accuracy,%;
    - Δ with - relative error defined by varying the frequency of the internal reference oscillator frequency or frequencies introduced exemplary action;
    - - The measured frequency;
    - T - time measurements.
    Etnos be discriminatory measure DC voltage, current and resistance served in Table 1.
 
    Table 1.
Time pulses
Measurement limits
0.1
1 uA
1K
1c
10mkV
0.1 nA
0.1 Ohm
0.1
10mkV
1nA
1om
0.01 seconds
100mkV
10on
10 Ohm
   
    The device V7-17 has an input impedance:
    - When measuring DC voltage, no less - 100K on the limit of measurement of 0.1 V at the limit of measurement 1M 1B; 10MOm to within the measurement 10V and 1000V: 9MOm; at the limit of measurement 100V to the limit;
    - Current measurement - no more than 10 Ohm at the limit of measurement 100mkL, 0.5 ohms at rest within a dimension;
    - Frequency measurement - at least 50kOm with shunt capacity not exceeding 100 pF.

    Voltmeters for V7-18:
    - The burden of a measurement: 0.01 s, 0.1 B 1s.
    - The burden in the zone; 0.05 ± 0,015 with; 0,2 ± 0,06 a; 0,5 ± 0 15; ± 0,5 s and 5 ± 2,5 s.

    Time itself is warm and voltmeter:
    - 2 hours for the frequency measurement;
    - 1:00 in the measurement of DC voltage, current and resistance tion;
    - 2 hours ace for DC measurements I, current, and of resistance at a relative humidity of 95% at 30 ° C.
    Power consumption of the voltmeter does not exceed 100 tons in.

    In measurements of the post oyannogo voltage and current devices V7-18 provide surge pom Laughter.:
    - As a general form by constantly mu current, and the AC frequency of 50 well ± 0,5 Hz for at least 110dB;
    - Serial form at a frequency of 50 Hz ± 0,5 at least 40 dB.
    Devices V7-18 th t ime lifespan of at least 5,000 hours of aces. Mean time between failures - not less than 800 hours. Lifetime B7-18 - at least 5 years.

    Operating conditions V7-18
 
    Voltmeters V7-18 are designed for use in the following conditions:
    - Ambient temperature - 15 ° C to 40 ° C;
    - Relative Humidity - 95% at 30 ° C;
    - Atmospheric pressure - 750 ± 30 mm Hg. Art.

Photos: V7-18 (B7-18)

V7-18 (B7-18) voltmeter image.
V7-18 (B7-18) voltmeter image.
V7-18 (B7-18) front view.
V7-18 (B7-18) front view.
V7-18 (B7-18) side view.
V7-18 (B7-18) side view.
V7-18 (B7-18) rear view.
V7-18 (B7-18) rear view.
V7-18 (B7-18) overhead view.
V7-18 (B7-18) overhead view.
V7-18 (B7-18) bottom view.
V7-18 (B7-18) bottom view.


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