Polcon - Sentry Recorder

Polcon Sentry Recorder is a unique, solid state, microprocessor-type recorder that senses and records differential pressure obtained from a Pitot rod, which is then used to determine the flow rate through a pipe or water-main. The recorder can be programmed to monitor flow for short or long-term testing, is self-contained, light-weight, and fits into the standard 20.25” manhole entrance.  It’s portability makes it ideal for real-world applications.