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878x

878x Hybrid gas density monitor with switching contacts and current output

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Main features

Exact switching output at all temperatures
Fully temperature compensated by design
No contact bouncing
Continuous density measurement
Long term drift free sensor output signal
Maintenance free indoor and outdoor use

About

Swiss based Trafag offers precise, reliable and maintenance-free instruments, developed for density monitoring of SF₆ and alternative gases. Measurement is based on the gas density reference principle or the patented quartz tuning fork technology. Hybrid monitors combine both principles in one instrument. Thus offering the most reliable solution on the market by directly measuring the gas density.

Technical Data

More Information
Product code	878x
Designation	Hybrid gas density monitor with switching contacts and current output
Measuring range	max. 0 ... 60 kg/m³ max. 0 ... 1250 kPa abs. @ 20°C
Measuring principle	Monitor: Absolute pressure reference gas measuring system Sensor: Oscillating quartz
Designation of application	Density monitoring and measurement in insulating and quenching gas
Output signal	Monitor: Floating change-over contact (SPDT) Sensor: 4 ... 20 mA, 6.5 ... 20 mA
Ambient temperature	-40°C ... +80°C
Product category	Gas density monitoring
Applications	High voltage technology Medium voltage technology