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Turbidimeter Typical Sensor Mounting


Drawing of sensor mounting

There are no restrictions on the maximum pipe diameter into which the sensor can be installed. However, if a 2-inch or smaller line is to be monitored, install a 2-inch or larger T to prevent the sensor from blocking the line.

While any position on the periphery of the process pipe may be used to install the sensor, a position above the horizontal plane is recommended, particularly if the sensor is to be removed frequently. The sensor may either be installed through a "T" or a weldment that has been installed on the process pipe.

An insertion depth between 1" and 4" is suggested. If the process pipe is empty or filled with a clean fluid, position the sensor at a depth where a minimum reading is obtained on the meter. This is to assure that any internally reflected light from the process piping can be zeroed out. To further reduce internally reflected light, rotate the sensor so that the small center punch located below the junction box is facing upstream. In other words, if the process pipe is horizontal and the sensor is inserted into the top of the pipe, the center punch should be facing in line with the flow towards the upstream side. This permits a "scrubbing" action on the windows, and helps eliminate any buildup on the sensor while keeping reflected light at a minimum.