The TB47 conductivity cell can be directly inserted into, or removed from, lines and vessels without disturbing the process. Designed for service in systems exceeding pressure ranges of standard hot-tap sensors, these high pressure, hot-tap sensors also ensure worker safety. Closing a ball valve isolates an extraction housing, separating the operator from the sensor and process. The housing can be pressurized or depressurized and purged by installing flush and / or drain lines to the 1/4 in. NPT purge connections. Ruggedly constructed of 316 stainless steel, these sensors withstand the most demanding processes and measurement requirements.