Sensors by Installation Methods

The first consideration when selecting a pH sensor is how will it be mounted into the process.  Examples of various process mounting configurations are shown below. 

In-line Sensor Mounting
In-line installations are common on sample streams off the main process. Isolation valves should be upstream / downstream of sensor for removal.

Hot Tap Sensor Mounting
Hot Tap refers to the ability to remove the sensor from the process while under pressure. A ball valve is used to isolate the sensor for removal.

Submersible Sensor Mounting
Submersible mounting installations are required when the measurement is needed directly into a tank, reactor vessel or open channel. Typically the sensor must be mounted on a "dip tube" which is the hardware to submerge the sensor in the application.

Installation Mounting Orientation
Sensor mounting for optimum performance should be considered prior to installation. The illustration below shows examples of vertical and horizontal installations.


Mounting Orientation

  • submersible group
    Submersible Applications

    Certain applications require that the pH / ORP sensor must be submerged into tanks, vessels, or open channels. The 546 sensor provides the ideal design for these installations.

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  • Isolation and Ball valve applications
    Ball Valve & Hot Tap Applications

    Retractable "hot tap" pH/ORP sensors provide quick, accurate response by inserting the sensor directly into the process instead of remote measurement in a sample stream. Compression fittings in materials such as 316 Stainless, Titanium, Hastelloy C-276, PVDF (Kynar), and Teflon ensure that the sensor is held securely in place against process pressure. The sensor can be easily removed from the process without shut-down through the use of an isolation ball valve. Optional insitu Clean / Calibrate / Purge fittings can be included to further reduce the need to remove the sensor from the process. Rugged Barben Analytical sensors are best suited for these applications. The patented Axial Ion Path® reference design greatly slows poisoning of the sensor reducing pH offset readings. The high temperature (130°C / 266°F) and high pressure (up to 300 PSIG depending on design) allow the sensor to work without the need for sample conditioning. These features result in increased sensor longevity with less maintenance than competitive designs.

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  • in line applications group
    In-Line Threaded Applications

    In-line mounting is commonplace in sample line applications where the pH / ORP sensor will mount between isolation valves. The isolation valves are used to stop the process flow past the sensor so it can be temporarily removed for cleaning, calibration, or replacement. This style of mounting is most common when a sample stream off the main process is desired. Barben Analytical has a wide variety of in-line mounting options with process connections from 3/4 to 1-1/4 inch Male NPT as well as adjustable compression hardware to vary the sensor insertion depth when extended pipe nipples or tee's are used.

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    In-Line Flange Applications

    Depending on the process, in-line mounting of pH / ORP sensors in sample lines may require special features such as flanged connections or cleaners. Barben Analytical's versatile sensor designs allow for different length options to accommodate extended pipe nipples and flanges. In-line cleaning of the glass electrode through either jet spray or mechanical cleaners is also available for those applications that have soft coatings, oils, and other deposits. Here are just a few examples of special in-line applications. Contact Barben Analytical for options.

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