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Measuring Instruments

V.T.V.M (Vacuum Tube Voltmeter VM-10) :

(ZES-20)

Specification  
AC Voltage 0-1.5,5, 15,50,150,500,1500volts
DC Voltage 0-1.5,5,15,50,150,500,1500volts
Resistance 0-1k, 10k, 100k, 1M, 10M, 100M, 1000meg.ohms.
Calibration Accuracy AC Voltage ±4% on all ranges.
DC Voltage ± 3% on all ranges.
Resistance within ±2% on all ranges.
Frequency Response Within range of 50c/s to 5Mc/s flat.
Input Impedance DC Voltage 11M ohms on all ranges for AC
voltages 5M
Ohms in Parallel with 25P.F.
Meter Using 80mm Diameter
Source of Supply 230volts 50c/s AC.

 

Fet Multimeter (IN LIEU OF V.T.V.M.) :

(ZES-22)

Input Impedance 10Megohms
Specification  
Input 230volts
Input Impedance 10Megohms
Range AC/DC 0-1500 Volts in seven range. Accuracy ± 3%
(a) 0-1.5volts
(b) 0-5volts
(c) 0-15volts
(d) 0-50volts
(e) 0-150volts
(f) 0-500votls
(g) 0-1500volts
Resistance up to 1000 Mega ohms.
 

Absorption Wave Meter

(ZES-23)

This instrument is designed to measure the frequency of Oscillators. It has six set
of coils.

(1) 100Kc/s-300Kc/s
(2) 300Kc/s-1Mc/s
(3) 1M/c-3Mc/s
(4) 3Mc/s-10Mc/s
(5) 10Mc/s-30Mc/s
(6) 30Mc/s-100Mc/s
 

Power Output Meter

(ZES-24)

Input 230volts AC 50Hz
Range 0-.5watts, 0-5watts, 0-50watts.
Load Resistance 4,8 and 15 ohms
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