Table of Contents

1 General Information on SF6
2 Gas sensors for the detection of SF6
3 Some relevant Applications to SF6

General Information on SF₆

Under normal conditions, sulfur hexafluoride (SF₆) is a colorless and odorless, non-toxic and non-flammable gas which, like nitrogen and CF₄, behaves in an extremely inert manner. Sulfur hexafluoride is used as an insulating gas in medium- and high-voltage technology, for example in gas-insulated switchgear (GIS) with high-voltage switches and in gas-insulated pipelines (GIL) in completely enclosed systems with operating voltages from 6 kV to 800 kV. SF6 also serves as an extinguishing gas to interrupt the switching arc in circuit breakers. Due to its high global warming potential (GWP=23500), this gas may only be used under strict conditions.

Gas sensors for the detection of SF₆

Gas Sensor, OEM Product

INFRA.sens AK2/P – SF6

Rugged sensor design
No cross-sensitivity to CF₄
Low power consumption <2W @ 24V
Different Interfaces (RS232, CANbus, Analog)
Pressure compensated (600-1200 mbar)
Inklusive MARS-Tool (Wi.Tec Software)

Gas Sensor, OEM Product

INFRA.sens AK100

CO2 CO N2O CnHm CH4 SF6 H2O

Rugged sensor design
Low power consumption <2W @ 24V
Different Interfaces (RS232, CANbus)
Low drift
MARS-Tool (Wi.Tec Software)

Gas Sensor, OEM Product

INFRA.sens AK250

CO2 CO N2O CnHm CH4 SF6

High dynamic range
Low power consumption <2W @ 24V
Different interfaces (RS232, CANbus)
Low drift
MARS-Tool (Wi.Tec Software)

Gas Sensor, OEM Product

Kombi.sens

CO2 CO N2O CnHm CH4 CF4 SF6 H2O O3 Cl2 SO2 H2S NO2

Optimal adaptation to the measurement task
Combination of IR and UV technology
High accuracy
Low power consumption
Compact size
Space-saving design
Up to 3 gases + O₂
Cross-charging among each other possible

Application

Gas Insulated Switchgear Monitoring

CO2 CO CF4 SF6 SO2

Detection limit (3 sigma) < 0,1 Vol.%
Linearity error < 0,5 % FS (Fullscale)
Including Temperature-compensation 5 - 45 °C
Including pressure compensation 600 - 1200 mbar
Ready to use module

INFRA.sens® AK2/μP compact // INFRA.sens® AK20G compact To save the atmosphere – for quality and leakage measurement In gas-insulated high- and medium-voltage switchgear, sulfur hexafluride (SF6) is used as an …

CF4 Sensor, CO Sensor, CO2 Sensor, Monitoring of gas-insulated switchgear, SF6 Sensor, SO2 Sensor

Application

Customer Specific Projects

CO2 CO N2O CnHm CH4 CF4 SF6 H2O SO2 O3 Cl2 SO2 H2S NOx NO2 NO

You have a measurement task that goes beyond the usual standards and are looking for a competent partner?
Please contact us. Your measurement task is our challenge!
The employees of Wi.Tec-Sensorik GmbH have extensive expertise in the field of industrial gas measurement technology and sensor signal processing.

Costumer specific projects, CF4 Sensor, CH4 Sensor, CL2 Sensor, CnHm Sensor, CO Sensor, CO2 Sensor, H2O Sensor, H2S Sensor, N2O Sensor, NDIR Sensor, NDUV Sensor, NO Sensor, NO2 Sensor, Non OEM, NOx Sensor, SO2 Sensor

Application

Humidity Measurement

CO2 CO N2O CnHm CF4 SF6 H2O

Detection limit: < 5 ppm H₂O
Fast response time (t90 < 10 sec)
Corrosion resistant design possible (processline)
Low maintenance operation
Can be combined with other gas measurements such as CO₂, CO, C_nH_m, CH_{4_etc.}

INFRA.sens® CO2 / HC / H2O – AK250GC / TBH piped Compact alternative to laser and dew point mirror sensors Humidity measurement is an important component of gas measurement technology, …

CF4 Sensor, CnHm Sensor, CO Sensor, CO2 Sensor, H2O Sensor, Humidity measurement, N2O Sensor, SF6 Sensor

General Information on SF6

Gas sensors for the detection of SF6