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Frequency Meters, Analogue Type

‘‘INDOTECH’’ Frequency Meters are of two types :
(a) VIBRATING REED TYPE :

PRINCIPLE OF OPERATION :

The element of these instruments consist of steel reeds which are in the field of an electromagnet. These reeds vibrate in resonance with the energizing A.C. Only the reed whose natural frequency corresponds with the frequency of the A.C. supply will vibrate at full amplitude indicating the correct frequency on the dial.

SPECIFICATIONS :
MODELS AVAILABLE SR72, SR96 & SR144
ACCURACY Class 1.0 as per BIS-1248/03
TEST VOLTAGE2 kV, A.C.
VA BURDEN3.0 VA at 230V.
RANGES AVAILABLE45-50-55, or 47-50-53 Hz
NO. OF REEDS11 Reeds for 72x72 mm Models & 13
        Reeds for 96x96 & 144x144mm Models.
(b) TRANSDUCER TYPE :
PRINCIPLE OF OPERATION :

This basically consits of electronic circuit coupled with moving coil meter. Oscillator circuit gives the signal according to the frequency of supply which is indicated on the dial of the meter.

SPECIFICATIONS :
                                                           
MODELS AVAILABLEMR72, MR96 & MR144
ACCURACY Class 1.0 as per BIS-1248/03
TEST VOLTAGE 2kV, AC.
SCALE RANGE40-50-60 Hz
RATED VOLTAGE 110, 230 or 415V, AC. Single Phase.
Frequency Meter
Frequency Meter
 
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