Trafag 8781 Hybrid Gas Density Monitor

Trafag

Product Code: 8781
Brand: Trafag



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Description for Trafag 8781 Hybrid Gas Density Monitor

ApplicationsHigh voltage switchgearCategoryHybrid gas density monitorsDielectric strengthMicroswitch: 2 kV terminal groundOutput signal sensor: 250V against mass (EN60255-5)Measuring principleMechanical monitoring: Principle: Reference gas measurementElectronic monitoring: Principle: Oscillating quartz measurementVibrationAt min. 5 kPa distance from switch point no contact bouncingunder 20...100 Hz: 4 gMedia temperature-40°C ... 80°CShock50g/ 8 msAmbient temperature-40°C ... 80°CSensor1.4435, 1.4404, 1.4571 (AISI316L, AISI316)ProtectionIP67Output signalMechanical monitoring: floating change-over contactElectronic monitoring/sensor: analogue: 6.5...20 mA current loopOutput signal 6.5...20 mAcurrent loop 0...0.85MPa absolute SF6 @ 20°C 0...56.1 kg SF6 /m3Measuring rangeMechanical monitoring, measuring range absolute: 0...1.1 MPa (0...1100 kPa)Electronic monitoring/sensor, measuring range absolute: 0...0.85MPa SF6 @ 20°C 0...56.1 kg SF6 /m3

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