The RH Systems Model 973-SF6 Analyzer was specifically designed for measurement of humidity and SF₆ purity in gas insulated switchgear systems. Humidity measurement data is displayed in ppmv, ppmw and dew/frost point at either system pressure or standard pressure. Purity measurement is displayed directly in % volume SF₆. Both the humidity and purity measurements utilize accurate and reliable condensation techniques.

The RH Systems Model 973-SF6 Analyzer features:

• 115/230V Input
• Range: -55°C…+20°C DP, accuracy is 0.5 deg of reading
• 80-100%Vol SF6
• 10-20,000 ppmv
• 973-SF6 Moisture and Purity Analyzer for SF6
• Designed exclusively for SF6 with:
• 3-stage Peltier cooling
• Rhodium mirror
• Digital display
• Electronic flow meter
• Ice test for checking accuracy at 0°C
• 316 stainless steel internal tubing and fittings
• SH measuring head for 150 psi (10 bar)
• Internal pressure measurement
• Built-in recovery system for no-loss operation (approx. 3 samples capacity)
• ORIS – Optimal Response Injection System