Retractable probe housing EXtract 825

pneumatic

Product description
EXtract 825 is a pneumatically operated retractable probe housing designed for installation on process tanks or piping using DN25 welding sockets (G1 1/4). The drive unit inserts the sensor into the process medium and retracts it into a cleaning chamber; pneumatic position signals indicate the "measuring" and "service" positions. In-line cleaning, rinsing and calibration are possible while the process runs. An integrated PTFE scraper enables use in abrasive or fouling processes.

Your advantages

• Integrated PTFE scraper for improved fouling protection
• Compatible with DN25 (G1 1/4) welding sockets
• Extends sensor lifetime and reduces maintenance
• Automatic safety lock when the sensor is removed
• Can be fully automated with the electropneumatic control unit EXmatic 470
• Material options: PP, PVDF or PEEK (wetted parts)
• Immersion length: 70 mm
• Suitable for ATEX areas
• Operational up to 10 bar and 140 °C
• Optional high-stability Alloy protection cage for PVDF version
• Maintenance-free drive unit

Applications

• For sensors Ø12×225 mm or Ø12×280 mm (liquid-filled) with PG13.5 thread (pH glass and ISFET, conductivity, temperature, turbidity and other optical sensors)
• Chemicals and process industry
• Water and wastewater treatment
• Rough processes where stainless steel is not suitable
• Where automated sensor cleaning or calibration is required

Configuration options (selection)

• Wetted materials: PP, PVDF, PEEK
• Wetted seals: EPDM (FDA/USP VI), FPM (Viton), FFKM (Kalrez)
• Sensor options: 225 mm PG13.5 gel-filled; 280 mm PG13.5 liquid-filled
• Process connection: G1 1/4" (DN25), O-ring position 25 mm
• Cleaning connections: G1/8" female, G1/4" female, 1/4" NPT female
• Position feedback: pneumatic or electrical (NAMUR)

Characteristics / technical specifications

• Process pressure: 0…10 bar
• Process temperature: -10…140 °C
• Ambient temperature: -10…70 °C
• Immersion length: 70 mm
• O-ring position: 25 mm
• Sensors: 225 mm Ø12 PG13.5 (option for 280 mm Ø12 liquid-filled)
• Materials (wetted): PP, PVDF, PEEK
• Seals (wetted): EPDM, FPM (Viton), FFKM (Kalrez)
• Process connection: G1 1/4" (DN25)
• Cleaning ports: G1/8", G1/4", 1/4" FNPT
• Operating supply: compressed air 4..6 bar
• Limit switches: pneumatic / electrical, integrated