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Vibrating Reed Frequency Meter
| DESCRIPTION | ||
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It is used to measure the applied frequency. Vibrating Reed 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 distinct indication. |
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| FEATURES | |
| • | Vibrating reed. |
| • | No aging effect. |
| • | Faster response. |
| • | Lighter in weight. |
| • | Low power consumption |
| • | Rugged construction |
| • | High reliability |
| ELECTRICAL SPECIFICATIONS | ||
| • | TYPE | Vibrating Reed |
| • | OPERATING VOLTAGE | 110V~125V, 220V~250V, 380V~440V. |
| • | POWER CONSUMPTION | Less than 0.3VA,0.6VA and 1.2VA for respective operating voltage in 72 & 96. 26 Sizes |
| Less than 0.6VA, 1.2VA, 2.4VA for respective operating voltage in 144 size. | ||
| • | DIELECTRIC STRENGTH | 2kV RMS for 1 minute. |
| • | OPERATING TEMP. | -10°C to 55°C |
| • | STORAGE TEMP. | -20°C to 70°C |
| • | HUMIDITY | Upto 95% RH |
| • | CONFORMS TO | I.S.1248 / I.E.C. 60051(Part4). |
| AVAILABLE RANGES | ||||||||
| MODEL | RFS 72 | RFS 96 | RFS96 | RFS 144 | RFS 144 | |||
| RANGE | Resolution | Reeds | Acc.# | Single Scale | Single Scale | Dual Scale | Single Scale | Dual Scale |
| 45 - 50 - 55 | * | 13 | ±1 |  |
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| 47 - 50 - 53 | 0.5Hz | 13 | ±1 | |
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| 55 - 60 - 65 | * | 13 | ±1 | |
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| 57 - 60 - 63 | 0.5Hz | 13 | ±1 | |
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| 45 - 50 - 55 | 0.5Hz | 21 | ±1 | -- | -- | -- | |
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| 55 - 60 -65 | 0.5Hz | 21 | ±1 | -- | -- | -- | |
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| # % of centre frequency Available models |
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| * | There are 11 reeds in a row in setps of 1Hz for range 45 - 50 - 55Hz (55 - 60 - 65Hz) with additional 2reeds for 49.5 and 50.5Hz (59.5 and 60.5Hz) respectively. |
| MECHANICAL SPECIFICATIONS | |||||
| MODEL | RFS 72 | RFS 96 | RFD 96 | RFS144 | RFD 144 |
| SIZE (mm) | 72 x 72 x 70 | 96 x 96 x 70 | 96 x 96 x 70 | 144 x 144 x 60 | 144 x 144 x 60 |
| PANEL CUTOUT (mm) | 68 x 68+0.7 | 92 x 92+0.8 | 92 x 92+0.8 | 138 x 138+1.0 | 138 x 138+1.0 |
| WEIGHT (Approx.) | 300gms. | 360gms. | 550gms. | 650gms. | 950gms. |
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| RFS 72 | RFS 96 / RFD 96 |
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| RFS144 | RFD 144 |
| Ordering information :1) Type 2) Operating Voltages 3) Model 4) Range |
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