Voltmeter S508 (S 508, S-508, c508, c 508, c-508)
Voltmeters showing S508, analog, direct conversion are designed for direct measurement of AC voltage over a wide range of frequencies and DC voltage, and for the less precise calibration instruments.
Voltmeter S508 is designed for use: - in a temperate climate in enclosed dry heated rooms at the ambient temperature of 10 to 35 ° C and a relative humidity of 80% at a temperature of 25 ° C.
Voltmeter S508 -04.1 - in dry and humid tropical climate in closed rooms with air conditioned or partially air-conditioned at the ambient temperature from 1 to 45 ° C and a relative humidity of 80% at a temperature of 25 ° C.
Accuracy class 0.5 in accordance with GOST 8711-78 after setting the operating mode for any time of continuous operation. Voltmeters S508 produced single band with the parameters specified in the table. Maximum permissible error in a range of measurements in the normal range of frequencies and direct current is ± 0,5% of the final value of the measuring range. Warm-up time (the time of pre-heating the rated load) voltmeters no more than 15 minutes.
The limit of additional error caused by the frequency deviation from the upper limit of the normal range of frequencies to any frequency value in the working frequency range is ± 0,5% of the final value of the measuring range. Voltmeters S508 can be used in the frequency range up to 5 MHz. Limits of error voltmeters S508 in this range are indicated in the table.
The limit of additional error voltmeters S508 caused by changes in ambient temperature from normal to any temperature within the operating range is ± 0,5% of the final value of the measuring range for each 10 ° C change in temperature. The normal value of the ambient temperature of 20 ° C voltmeters or specified in purchase order. Tolerance ± 2 ° C.
Response time voltmeters S508 is less than 6 seconds. Input impedance voltmeter DC (insulation resistance measurement circuit between terminals) in normal conditions of use at least October 11 ohms.
Supply chain is the light index voltmeters AC voltage (220 ± 22) V, 50-60 Hz transformer, can be combined with a voltmeter S508, either on AC or DC voltage (4 ± 0,4) B. Dimensions: voltmeters - (205 ± 1,45) x (290 ± 1,6) x (135 ± 2,0) mm, transformer housing, no more than 65x85x45 mm. Weight does not exceed: voltmeters - 3.6 kg; transformer - 0.5 kg.