- April 03, 2019
- Emerson Automation Solutions
April 3, 2019 – Emerson has announced the creation of a single-use sensor technology for biopharmaceutical manufacturers. The Rosemount 550pH single-use sensor and the Rosemount 550DW dissolved oxygen single-use sensor adapter are designed to deliver the same stability and performance as Emerson’s stainless-steel sensors. The Rosemount 550pH sensor offers the capability of being stored wet for immediate verification and standardization, eliminating the initial stabilization process, which can generally slow startup by 30 minutes to two hours.
The Rosemount 550pH sensor is an electrochemical, fully disposable device with sensor stability of less than 0.005 pH change per day verified by testing. The Rosemount 550pH sensor provides stability and requires no maintenance or calibration after initial one-point standardization.
Since the Rosemount 550pH sensor is stored wet, it overcomes the problem of inserting a dry sensor into the single-use bioreactor only to discover it’s not working properly and having to discard the entire processing unit to start again. The sensor is packaged with its own calibration fluid, giving it a two-year shelf life. Wet, one-point standardization before startup means that the sensor’s characteristics and functionality are verified before any solutions or buffers are added to the bioreactor bag. It also means that the verified sensor begins measuring immediately after being introduced into the bag with no extensive wait time.
The Rosemount 550DW dissolved oxygen (DO) sensor adapter is compatible with standard stainless-steel DO sensors and enables placement into the bioreactor single-use bag. Only the gamma-irradiated adapter touches the process solution, meaning the sensor can be reused for multiple batches. The sensor can be air-calibrated prior to startup to verify functionality with no fill product needed in the bioreactor.
Both the Rosemount 550pH sensor and the Rosemount 550DW dissolved oxygen sensor adapter operate with the Rosemount liquid analytical 56 transmitter. In addition, the sensor technologies and the Rosemount 56 transmitter are fully compatible with the Emerson DeltaV control system, which is used in the life sciences industry.