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H70664b_8775_Gas_Density_Sensor_RS485_Modbus
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Catalog excerpts

H70664b_8775_Gas_Density_Sensor_RS485_Modbus - 1

Continuous density and temperature measurement Digital output signal RS485 Modbus for density, pressure and temperature Compliant with IEC61850 Extremely drift-free signal Maintenance-free trcifciq sensors controls

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H70664b_8775_Gas_Density_Sensor_RS485_Modbus - 2

Gas Density Sensor 8775 RS485/Modbus Unique electronic SF6 gas density monitoring with quartz tuning fork The Trafag gas density sensor type 8775 was specifically designed for the monitoring of insulation gases. This unique patented sensor technology opens new paths for the energy distributing industry to realize comprehensive trend analysis and monitoring. The digital output signal RS485/Modbus measures directly and continuously the gas density and the signal of the gas temperature. Advantages Continuous digital output signal RS485/Modbus usable for SF6 trend analysis Compliant with...

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H70664b_8775_Gas_Density_Sensor_RS485_Modbus - 3

Technical data Gas Density Sensor 8775 Principle Oscillating quartz measurement Material pressure connection Material tube Reaction time RS485 interface Operating & Media temperature –40 ... +80 °C Measuring range Output signal Supply voltage Electrical connections and wiring diagram Plug M12x1 data cable, shielded AWG26, twisted pair, 100Ω impedance 5 first and last device (120Ω) DC DC optocoupler microprocessor /RS485 driver

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H70664b_8775_Gas_Density_Sensor_RS485_Modbus - 4

A (Data—) B (Data+) GND Shield on cable For other available pressure connections: See data sheet www.trafag.com/H72502 Subject to change H70664b Trafag AG 10 /2013

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