Battery-Powered Electromagnetic Flowmeter for Remote Sites

Endress+Hauser’s newly released Proline Promag L800 battery-powered electromagnetic flowmeter is an ideal flow measurement device for water and wastewater systems located at remote sites. The flowmeter has an integrated Global System for Mobile Communications and General Packet Radio Services (GSM/GPRS) cellphone system that allows data, such as alarms or totalizer counts, to be transmitted as e-mail over the cellular network. All the flowmeter needs is a cellphone Subscriber Identity Card (SIM card) from the local cellphone provider. The flowmeter can then be configured as a point-to-point connection, or as a modem that can be openly accessed via the Internet or a company intranet. Once configured, an operator at a central control room can receive alarms, query totalizer readings, and change the flowmeter configuration. The flowmeter’s built-in data logger saves data on a 2 GB SD card. The flowmeter can be configured to send emails periodically (such as once a day) with an attached CSV file. It can be programmed to generate an alarm email only if flow deviates from setpoint, eliminating the need for continuous monitoring, and reducing cellphone charges.

The Proline Promag L800 uses three sets of size D lithium-thionyl chloride high-power batteries that last for 15 years. The flowmeter is available in sizes from 2 inches to 24 inches, operates at pressures up to 232 psi, and works with liquids having a minimum conductivity ≥50 µS/cm and a maximum flow rate of 33 ft/sec. (