Broadley-James sensors have been used for more than two decades in the pulp and paper industry under conditions involving strong caustics, high temperatures, and harsh industrial environments. The ST977, ST864, and ST951 are rugged, sealed sensor assemblies designed specifically for in-line applications in pulp and paper mills and related chloralkali plants. A good control system provides repeatability to the paper mill operator. It is their knowledge that produces quality paper. The reliable sensor, however, allows them to consistently do this over and over again, with confidence. The DynaProbe’s® unique design offers distinct advantages which allow for a longer lifespan with less maintenance.