SQ-72-HZ Pointer Type AC 100/220V/380V Analog Panel Frequency Meter Tester Gauge Indicator 45-55Hz 45-65Hz 55-65Hz 72x72mm 1Pcs(45-55Hz,110V)

GaugesMain technical parameters1. The accuracy is 1.5 and 2.5;2. Service conditions: - 25 - 40'c, relative humidity 80% (25 );3. Mechanical properties: it can withstand acceleration of 30 m / s, impact frequency of 80-120 times per minute, and 2-hour transportation bumps;4. Insulation strength: AC voltage of 50 Hz, 2 kV, duration of 1 minute;5. Voltage influence: when the self rating value changes by ± 15%, the error of indication value does not exceed the basic error;Plate surface shell aspect:The base is made of flame retardant TBT plastic, Vicat temperature is 130 . The shell is made of flame retardant ABS plastic, and the Vicat temperature is 85 .In terms of the amount of change caused by temperature:The reference temperature was 23 ± 2 . Within the temperature range of 13 ~ 23 and 23 ~ 33 , the allowable change of temperature effect is not more than ± 100% of grade index.Installation position and installation method:Unless otherwise specified, instruments are normally installed in a vertical position. Other installation positions such as horizontal installation and inclined installation can be made according to customer requirements. The corresponding accuracy level is only valid for the specified installation position. The instrument is divided into two kinds of indication angles: right angle 90 ° and wide angle 250 °.The influence of vibration and shock resistance is as follows

• Gauges