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Trafag 8782 2-Stage Hybrid Gas Density Monitor

Country: Switzerland (Trafag Company, accurate developer and no need to maintain density and gas pressure instruments)

Mark: Trafag - Hybrid Gas Density Monitor (878X)

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Technical specifications and performance

This device has a precise combination of two gas density measuring technologies in one tool:

1. Mechanical Monitoring:

• Based on Reference Gas (Reference Gas Chamber)

• Output: Floating Change-Over Contact contacts for warning

• Motion Domain: 0… 1100 KPA Absolute (about 0… 1.1 MPa) @ 20 ° C  

2. Electronic Monitoring with Quartz sensor:

• Right and without error over time, suitable for continuous monitoring

• Output: Analog Flow Ring 6.5… 20 MA

• Measurement of SF₆ gas density or equivalent gas mixture, up to 0.85 MPa or 56.1 kg/m³ @ 20 ° C 

Key Features:

• Sustainable performance at -40 ° C to +80 ° C

• IP65 / IP67 environmental protection and high resistance to tremor and impact  

• High mechanical durability (up to 1 million contact cycles) and excellent accuracy in detecting gas density change 

• SF₆ gas insulation, suitable for medium and high pressure equipment such as GIS and Pressure Posts 

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Summary in table form

Description attribute

Swiss Country (TRAFAG Company)

Mark/Trafag Series - Hybrid Gas Density Monitor (8782 two -step)

mechanical monitoring of reference gas with SPDT output (0… 1100 kpa)

Electronic Quartz Sensor Supervision, Output 6.5… 20 MA, Domain Up to 0.85 MPa/56 Kg/M³

ambient temperature -40 ° C to +80 ° C

IP65 or IP67 Environmental Protection - Anti -vibration and impact

The main application of SF₆ density monitoring in GIS and pressure equipment, with alert and data output

This device is suitable for projects like Al Dhafrah 400 KV Lota that requires accurate monitoring and reporting,