Mettler Toledo InTrac Retractable Housing 777M/100/4404/D00/Vi/A00 316L SS

The Mettler Toledo InTrac 777M/100/4404/D00/Vi/A00 is a high-quality retractable sensor housing designed for industrial process analytics applications. It allows pH, ORP, dissolved oxygen, conductivity, and other analytical sensors to be safely inserted, removed, cleaned, calibrated, or replaced without shutting down the process. This significantly reduces maintenance downtime while improving measurement reliability and sensor service life. The InTrac 777M is widely used in chemical processing, pharmaceutical manufacturing, food & beverage production, water treatment, and biotechnology industries.

Key Features

• Retractable process sensor housing
• Suitable for pH, ORP, dissolved oxygen, conductivity, and analytical sensors
• Enables sensor maintenance without interrupting production
• TRI-LOCK™ safety system for enhanced process and operator safety
• Manual operation
• 100 mm insertion length
• 316L stainless steel wetted construction
• Sensor detector prevents operation without an installed sensor
• Designed for harsh industrial environments
• Compatible with automated cleaning and calibration systems
• Suitable for hazardous area installations (configuration dependent)

Specifications

• Manufacturer: Mettler Toledo
• Model: InTrac 777M/100/4404/D00/Vi/A00
• Series: InTrac 777M
• Function: Retractable sensor housing
• Operation: Manual
• Insertion Length: 100 mm
• Material: DIN 1.4404 / AISI 316L Stainless Steel
• Functional Pressure Range: 0 to 5 bar
• Maximum Process Rating: Up to 16 bar at 140°C (316L version)
• Wetted O-Rings: Viton® (Vi)
• Process Measurement Compatibility:
  • pH
  • ORP (Redox)
  • Dissolved Oxygen
  • Conductivity
  • CO₂
  • Turbidity (sensor dependent)
• Weight: Approx. 4.5 kg
• Available Process Connections: DN25, Flange, NPT, Tri-Clamp, Varivent (configuration dependent)
• Certifications: CE, PED, ATEX, FM approvals available on applicable models

Function

The InTrac 777M retracts the installed sensor into a maintenance chamber where it can be cleaned, calibrated, inspected, or replaced while the process remains pressurized and operational. The integrated TRI-LOCK™ safety mechanism and sensor detection system help prevent accidental removal and improve overall plant safety. This makes the housing ideal for critical process control applications where continuous operation is required.

Typical Applications

• Chemical processing plants
• Pharmaceutical manufacturing
• Food & beverage production
• Biotechnology facilities
• Water and wastewater treatment
• Process pH monitoring systems
• Automated process analytical installations