Combined device F4318 (F 4318, F-4318; f 4318; f 4318; f-4318)
Combined instrument F4318 - a device for measuring the force and the DC voltage, rms power and AC voltage sine wave DC resistance, electrical capacitance, the absolute level of the signal voltage AC circuits.
Accuracy class: 1.5, 2.5.
- Voltage: 1 mV-1000V;
- Current: 1mA-30A;
- Voltage: 0-5MOm;
- Capacity: 0-500mF;
- The level of the signal from 70 - to 50.
In the combined F4318 devices used measuring unit with a magneto system vnutriramochnym magnet. Operation of these mechanisms is based on the interaction of the measured current flowing through the conductors of the movable coil and the magnetic field of the permanent magnet.
The combined devices F4318 allow basic error of measurement, the value of which does not exceed 2.5%. Basic error readings do not exceed 2.5% under normal conditions or factors affecting normal values, namely:
- Working position - horizontal with a tolerance of ± 2 °;
- Temperature 15 ° C to 25 ° C;
- Humidity - 80%;
- Shape of the current or voltage - sinusoidal.
Changing the readings at a deviation from their normal position from horizontal to 10 ° in any direction does not exceed the permissible errors.
Combined appliances F4318 have additional error indications caused by change in temperature of 10 ° C operating temperature range that does not exceed the basic errors.
Changes evidence admitted for F4318, caused by changes in the frequency of border regions to the nominal value of any in the extended frequency ranges when measuring AC voltage and current, the relative level of the AC voltage does not exceed the allowable values of basic errors.
Measurement error, which has a combined unit F4318 due to the deviation of the shape of the current or voltage of substantially sinusoidal under the influence of the second, third or fifth harmonic of 5% rms values of the measured voltage or current does not exceed 2.5%.
Insulation combined appliances F4318 between all isolated circuits and housing units at normal temperature and humidity can withstand for 1 minute test voltage of substantially sinusoidal waveform with a frequency of 50 Hz.
The combined devices F4318 designed for indoor use with the following conditions:
- Ambient temperature - from -10 º C and +40 º C;
- Relative humidity up to 90% at 30 º C.