Frequency Meters
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Beemet Frequencey meters are used to measure the applied frequency. They come as Pointer Type with built in Trasducer and Vibrating Reed Type.
Salient Features
- Vibrating Reed Type Frequency meters indicate the supply frequency by means of individual reeds, when rated voltage+ 20% is applied across the terminals of the meter, the particular reed, whose natural frequency of vibration coincides with the supply frequency, vibrates with full amplitude. In case the supply frequency falls midway between two reeds both the reeds vibrate, at reduced amplitude. The amplitude of vibration at the tip of reeds is high enough for a distint indication.
- The Pointer Type Frequency Meter has a clear, well defined scale marking at 90 degree angle. The pointer indicates the applied frequency when voltage is applied across the terminals of the meter.
General Specifications
| Accuracy | ±1.5 / 2.0 of FSD |
| Measurable Quantities | AC and DC Voltage or Current |
| Pointer deflection | 0 - 90º |
| Frequency | 50/60Hz |
| Sensitivity | 1000Ω/V (Voltmeter); 2000Ω/V (ammeter) |
| Overload Capacity | According to IS: 1248 / IEC 51 |
| Short duration for voltmeter | 2 times for 5s: 1 overload 2 times for 0.5s: 9 overload |
| Short duration for ammeter | 10 times for 5s: 1 overload 10 times for 5s: 9 overload |
| Continiously | 1.2 times rated voltage or current |
| Operating Temperature | -10 to 55°C |
| Storage Temperature | -25 to 65°C |
| Relative Humidity | < 75% annaul average, non-condensing |
Range Chart
| Model | Description | Ammeter |
|---|---|---|
| SF - 72, 96 | Reed Type | 45-50-55 HZ, 47-50-53 HZ, 55-60-65 HZ |
| SP - 72, 96 | Pointer Type | 45-50-55 HZ, 47-50-53 HZ, 55-60-65 HZ |
Dimensions
