Apps
Gas density monitoring of closed SF6 tanks
Suitable for indoor and outdoor applications, can be installed in switchgear using SF6 insulation

Features
Measurement range: 0 ... 10 g/L to 0 ... 80 g/L
Output signal: 4 ... 20 mA, 2-wire system
The wetted parts and outer casing are made of stainless steel, the ring welded structure
Protection level: IP 54 to IP 68 (highest), depending on electrical wiring
High long-term stability, strong EMI (anti-electromagnetic interference) capability, in line with CE standards

Description
Gas density transmitter can electronically compensate for the nonlinear state change of SF6 gas according to the Villi equation. The gas density transmitter collects the pressure and temperature of the SF6 gas in the equipment (tank). These two variables are then used to determine the current gas density through an electronic evaluation system. The system dynamically compensates for changes in the thermal sensing pressure so that it does not affect the output signal.
Gas density transmitter produces a 4...20 mA standard signal proportional to gas density.
Gas density transmitters have high long-term stability, eliminating the need for zero recalibration and maintenance.
The wetted parts are made of stainless steel (standard). The gas-tight welded measuring element maintains a good seal for a long time, and the measuring element is designed in a special structure, without any internal seals and without leakage.
Due to the above characteristics, this type of transmitter is not affected by atmospheric pressure fluctuations and installation height variations.
The EMI (anti-electromagnetic interference) performance of the transmitter is tested according to IEC 61000-4 to IEC 61000-4-6, which ensures safe signal acquisition, especially for high voltage switchgear.