Retractable probe housing EXtract 811

pneumatic

Description
EXtract 811 is a pneumatically operated retractable probe housing designed for inline installation on process tanks or piping. The drive unit inserts and retracts sensors (immersion length up to 207 mm) between the process and a cleaning chamber, enabling cleaning, rinsing and calibration during operation. Position feedback is provided pneumatically or electrically when the probe reaches the measuring or service position.

Your advantages

• Robust design with integrated scraper
• Extends sensor lifetime and reduces maintenance efforts
• Automatic safety lock when sensor is removed
• Plug-and-play installation with colour- and size-coded connections
• Integrated limit switches
• Suitable for ATEX zones
• Immersion length up to 207 mm
• Wide variety of process connections and sealing materials
• Rated up to 16 bar and 140 °C
• Materials: Stainless steel AISI 316L / 1.4404 or Alloy C22
• Fully automatable with electropneumatic control unit EXmatic 470
• Maintenance-free drive unit

Configuration options (examples)

• Material (wetted parts): Alloy C22 (2.4602) or Stainless steel 1.4404 / 316L
• Sealing materials (wetted): EPDM (FDA/USP VI), FPM (Viton), FFKM (Kalrez)
• Sensor options: 325 mm PG 13.5 gel-filled; 380 mm PG 13.5 liquid-filled
• Process connections: Flange DN40 PN16, Flange DN50 PN16, ANSI 1 1/2" 150lbs, ANSI 2" 150lbs
• Cleaning ports: G 1/8" female, G 1/4" female, 1/4" NPT female
• Position feedback: pneumatic or electrical (NAMUR)

Applications

• For Ø12–325 mm sensors or Ø12–380 mm liquid-filled sensors with PG13.5 thread (pH glass and ISFET sensors, conductivity, temperature, turbidity and other optical sensors)
• Chemicals
• Water and wastewater treatment
• Abrasive or demanding process environments
• Situations requiring automated sensor cleaning or calibration

Technical specifications

• Process pressure: 0…16 bar
• Process temperature: -10…140 °C
• Ambient temperature: -10…70 °C
• Immersion length: up to 207 mm
• Sensors: 325 mm Ø12 PG13.5 (also 380 mm Ø12 PG13.5 liquid-filled)
• Materials: Stainless steel 1.4404 / 316L; Alloy C22 (2.4602)
• Seals: EPDM, FPM (Viton), FFKM (Kalrez)
• Process connections: Flange DN50 PN16 / DN40 PN16 / ANSI 2" 150lbs / ANSI 1 1/2" 150lbs
• Cleaning ports: G1/8", G1/4", 1/4" FNPT
• Operating power: compressed air 4...6 bar
• Limit switches: pneumatic / electrical, integrated