Gas Density Monitoring – with Trafag

Gas Density Monitoring Instruments for High- and Medium Voltage Switchgear

Hybrid GAS Density Monitor

The Swiss based Trafag stands for its precise, reliable and maintenance-free instruments developed for the monitoring of SF6 and other gases in the field of high- and medium voltage switchgear. Trafag guarantees outstanding accuracy and operation in the widest temperature range on the market. As a customer oriented company Trafag offers application-tailored solutions as for example customized pressure connections or SF6 dial faces.

Trafags product range of gas density measuring devices splits into three different product groups:

• The Gas Density Monitor functions on the principle of reference gas comparison. It works electromechanically and is thus independent of electrical energy supply.
• The Gas Density Sensor was developed on the basis of the quartz tuning fork – a unique, patented technology. With the delivery of continuous output signals – analog or digital – Trafag opens new paths for the energy distribution industry to realize comprehensive surveillance or trend analysis of switchgear components by offering this electronically working sensor.
• The newly developed Hybrid Gas Density Monitor combines these two advantages in a very compact all-in-one apparatus. With its analog output it is therefore the ideal density monitor for SF6 gas management trending systems.

Gas Density Monitor

• most accurate device on the market
• high resistance against vibration and shock
• no bouncing of electrical contacts
• excellent low and high temperature capability
• intrinsic temperature compensation thanks to reference gas measurement
• protection degree IP 67 (NEMA 6, 6P)
• maintenance-free, no recalibration of switchpoints
• large SF6 indicator for good readability
• works with all mixed gases
• gas connections of all types and orientations available

„Robust and accurate – simply reliable under extreme conditions“.

Gas Density Sensor

• continuous output signal usable for SF6 trend analysis
• extremely drift free signal
• outdoor application without additional protection
• wide density range 0-10 bar SF6-pressure at 20°C
• electromagnetic compatibility (EMC) according to IEC standards
• digital or analog output signal available
• additional output of sensor temperature (digital version only)
• density measurement of all gases possible
• ready for EPA emission reporting

„Unique patented technology – for remote signal analysis“

Hybrid Gas Density Monitor

• very compact all-in-one device: mechanical density monitor with integrated electronic density sensor
• combined technology: local switching/read-out AND remote signal
• ready for SF6 gas management trending systems (e.g. EPA emission reporting)
• continuous analog signal
• maintenance-free

„Just combine the advantages“