Description

RF20H retractable holders are attached to tanks or piping by an applicable process connection. In order to comply with the various process properties, the RF20H (Extract 810 and 820) retractable holder is fabricated of stainless steel, Alloy C-22 or plastic. You can further choose between different process and cleaning ports, sealing materials, and sensors.

Variations

Retractable holders are attached to tanks or piping by an applicable process connection. In order to comply with the various process properties the RF20H (Extract 810 and 820) retractable holder is fabricated of stainless steel, Alloy C-22 or plastic. You can further choose between different process and cleaning ports, sealing materials, and sensors.

Drive

Compressed air is supplied via the pneumatic connections on the drive unit. The drive unit inserts the insertion rod in the process medium up to the maximal insertion depth. For safety reasons this is only possible with a sensor installed.

Measuring

When reaching the final position of the “measuring” position, the control receives a pneumatic position feedback signal. In this position the sensor head is immersed in the drive unit and cannot be removed. The sensor measures the chemical or physical properties of the process liquid.

Service

Cleaning, rinsing and calibration of the sensor is possible while the process is running. For this purpose the holder must be moved to the “service” position. Another pneumatic position signal feedback is given when the final position is reached. In the “service” position the insertion rod seals the cleaning chamber against the process to prevent leakage of process liquid. The required liquid is introduced into the cleaning chamber via the cleaning port “IN” and subsequently drained via the cleaning port “OUT”.

Learn about other ORP Sensors available at BBP here.