GESTRA NRG21-51 Capacitance Level Electrode

The GESTRA NRG21-51 is a capacitance level electrode designed for continuous level measurement in both conductive and non-conductive liquids. With a measuring range of up to 15 metres and a pressure rating of PN6 (6 bar), it handles a broad range of industrial process conditions with reliable accuracy.

Built from 316Ti and 316 stainless steel with a PTFE construction, the electrode is well suited to demanding process environments where resistance to chemical exposure and mechanical durability are required. It carries an IP65 protection rating, making it appropriate for wet or dusty conditions, and operates at temperatures up to 164°C.

The G 1½ A process connection (ISO 228-1) allows for straightforward installation across a range of standard process fittings. Weighing approximately 2.1 kg, the unit is compact enough for practical handling on site. Note that the NRG21-51 is not ATEX rated and is not suitable for use in explosive or hazardous atmospheres.

Applications:

• Continuous level monitoring in conductive liquids (e.g. water, aqueous solutions)
• Continuous level monitoring in non-conductive liquids (e.g. oils, solvents)
• Industrial process tanks and vessels operating at up to 6 bar
• High temperature process environments up to 164°C
• Installations requiring IP65 rated equipment

Summary:

• Type: Capacitance level electrode
• Measurement: Continuous level measurement
• Medium: Conductive and non-conductive liquids
• Measuring range: Up to 15 m
• Pressure rating: PN6 (6 bar)
• Max temperature: 164°C
• Process connection: G 1½ A, ISO 228-1
• Construction: 316Ti / 316 stainless steel and PTFE
• Protection rating: IP65
• Weight: ~2.1 kg
• Hazardous area use: Not ATEX rated; not for explosive atmospheres