SF₆ Gas Density Measurement SF₆ Gas Density Monitor SF₆ gas density pressure gauge MGD / SF6-Gas Pressure gauge Pressure transmitter for measuring SF₆ gas density EGD.357 Only for output 4-20mA EGD.358 Output 4-20mA & RS485 Bellows-type SF₆ gas density measurement switches and pressure transmitters GDT.855 Control switch GDT.857 Only for current output