The GF Signet 8150 Battery-Powered Flow Totalizer is a versatile and reliable instrument designed for precise flow monitoring and totalization in a wide range of applications. Specifically engineered for use with GF Signet 515 and 525 paddlewheel flow sensors, it provides a seamless integration for accurate flow measurement . Powered by two long-life 3.6 V lithium batteries, the 8150 is capable of providing uninterrupted flow data for up to 4 years, making it ideal for remote locations or installations where power wiring is impractical .

The 8150 features a large, easy-to-read LCD that simultaneously displays flow rate on a 4-digit upper line and totalized flow on an 8-digit lower line . A key feature is its three independent totalizers: one permanent, non-resettable totalizer for the life of the instrument, and two resettable totalizers. One of these can be reset from the front panel or remotely, while the other requires a user-programmable security code to reset, preventing unauthorized changes . An auto-calibration feature simplifies setup by allowing the user to enter a known flow value to match an external reference .

Designed for operational flexibility, the 8150 is available in both field-mount (integral) and panel-mount configurations, the latter fitting a standard 1/4 DIN cutout . The front panel is rated NEMA 4X/IP65, ensuring protection against water ingress and dust in harsh environments . Additional features include a no-flow indicator that displays elapsed time since flow stopped, a display averaging function (Speed) to stabilize erratic flow readings, and non-volatile memory that retains all programming and totalizer values even when batteries are removed . With its robust feature set, long battery life, and compatibility with proven Signet sensors, the 8150 Flow Totalizer is well-suited for applications including wastewater treatment, irrigation, filtration, process cooling water, and groundwater remediation systems .