Knick

SensoGate – Retractable Sensor Fittings for Reliable Process Measurement

Maintain Your Sensors Without Interrupting Your Process

In many processes, sensors are exposed to fouling, coating, or aggressive media. Over time, this affects measurement quality and increases the need for maintenance.

At the same time, stopping the process to service sensors is often not an option.

SensoGate retractable fittings allow you to remove, clean, calibrate, and reinstall sensors without interrupting operation – helping you maintain reliable measurements under real process conditions.

Niko Miettinen

Want to know more about our solutions from Knick?

Niko Miettinen

+358 40 714 2143 

Designed for Safe and Controlled Sensor Handling

SensoGate is a modular system of retractable sensor fittings designed for controlled insertion and removal of sensors in pressurised environments.

The system ensures a defined and safe sequence:

  • Sensor is retracted from the process
  • Isolated from process media
  • Cleaned or calibrated
  • Reinserted into operation

This allows you to maintain your measurement points without exposing operators or affecting production.

A key part of the design is the lock-gate principle, which ensures reliable shut-off during movement and protects both the process and the operator.

Build a Complete Measurement Solution

SensoGate fittings are typically used as part of a complete measurement system, including:

This allows you to design measurement points that are not only accurate – but also maintainable over time.

Choose the Right Level of Automation for Your Process

Different processes require different levels of automation. The SensoGate series allows you to match the solution to your operational needs.

Knick SensoGate WA130

SensoGate WA 130 – Fully Automated Operation

For processes where manual intervention is not practical.

  • Fully automated cleaning and calibration
  • Continuous measurement during maintenance
  • Integration with control systems and cleaning units
  • Monitoring of sensor position and media supply

Best suited for: Critical processes with high uptime requirements and strict measurement reliability

Knick SensoGate WA133

SensoGate WA 133 – Pneumatic / Semi-Automated Operation

For processes that require automation, but not full system integration.

  • Pneumatic operation with optional automation
  • Can be integrated with external or custom control systems
  • Maintains safe and controlled sensor handling

Best suited for: Applications where you want automation flexibility without full system complexity

Knick SensoGate WA133M

SensoGate WA 133 M – Manual Operation

For simpler installations where cost and simplicity are key.

  • Manual retraction and insertion
  • Maintenance possible under process pressure (up to 6 bar)
  • Modular design for easy adaptation

Best suited for: Applications with limited automation needs but still requiring safe sensor handling


Key Features That Ensure Long-Term Stability

Across the SensoGate series, the design focuses on maintaining performance over time:

  • Retractable design for in-process maintenance
    Service sensors without shutting down production
  • Lock-gate sealing system
    Prevents process leakage and ensures safe operation during movement
  • Integrated rinsing and cleaning functionality
    Reduces fouling and stabilises measurement conditions
  • Modular construction
    Allows adaptation to process requirements and easy retrofitting
  • Cyclone rinsing and scraper systems
    Improve cleaning efficiency and reduce wear on seals
  • Compatibility with standard sensors (Ø12 mm, 225 mm) Simplifies handling and reduces lifecycle costs
  • ATEX-certified versions available
    Suitable for hazardous environments

Where SensoGate Improves Your Process

You will typically benefit from SensoGate when:

  • Sensors are exposed to fouling or aggressive media
  • Measurement drift creates operational uncertainty
  • Manual maintenance is time-consuming or unsafe
  • Process shutdown is costly or not possible

Typical applications include:

  • Chemical and petrochemical processes
  • Water and wastewater treatment
  • Energy and power generation
  • Food and beverage production

What You Gain in Daily Operation

By integrating retractable fittings into your measurement setup, you change how maintenance affects your process:

  • Maintain reliable measurement data over time
  • Reduce manual intervention and maintenance effort
  • Improve safety during sensor handling
  • Extend sensor and component lifetime
  • Support stable and efficient process control

These products are used within these applications

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