Retractable probe housing EXtract 811M

manualpneumatic

Product overview
EXtract 811M is a manually operated retractable probe housing for inline pH and analytical sensors, suitable for installation on process tanks and piping. Constructed from stainless steel (AISI 316L / 1.4404) or Alloy C22 (2.4602), it provides an extended immersion length up to 207 mm. The drive unit inserts the sensor into the process medium and retracts it into a cleaning chamber; a safety knob automatically locks the measuring or service position. Cleaning, rinsing and calibration can be performed while the process remains running.

Your advantages

• Robust design with integrated scraper
• Automatic locking system with clear indicators for measurement and service positions
• Automatic safety lock when sensor is removed
• Materials: stainless steel AISI 316L / 1.4404 or Alloy C22 (2.4602)
• Suitable for use in ATEX zones
• Immersion length up to 207 mm
• Wide choice of process connections and sealing materials
• Rated up to 16 bar and 140 °C
• Maintenance-free manual drive unit
• Easy retrofit to pneumatic drive possible

Configuration (options)

• Material (wetted parts): stainless steel 1.4404 / 316L or Alloy C22 (2.4602)
• Sealing materials (wetted): EPDM (FDA/USP VI), FPM (Viton), FFKM (Kalrez)
• Sensor type: 325 mm Ø12 PG13.5 gel-filled or 380 mm Ø12 PG13.5 liquid-filled
• Process connections: Flange DN40 PN16, Flange DN50 PN16, ANSI 1 1/2" 150 lbs, ANSI 2" 150 lbs
• Cleaning connections: G 1/8" female, G 1/4" female, 1/4" NPT female
• Position feedback: without or electrical (NAMUR) limit switches

Applications

• For all 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 rough processes
• Sensor replacement or maintenance under running process conditions

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 (option: 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" 150 lbs / ANSI 1 1/2" 150 lbs
• Cleaning ports: G1/8", G1/4", FNPT 1/4"
• Drive unit: manual rotary drive (retrofit to pneumatic possible)
• Limit switches: optional electrical (NAMUR)