Sigma 980

Open Channel
Flowmeters

Sigma 980 Permanent Flow Meter

The Sigma 980 Flow Meter provides the versatility needed to handle a wide range of applications and site conditions. It has been designed to use three different sensing technologies so that you can choose the most appropriate one for your specific flow situation. In addition, the flow meter can connect to a wide variety of optional peripheral devices such as 4-20mA outputs, analog inputs, mechanical totalizer, rain gauge, sampler, pH sensor and modem that allow you to customize the 980 to your particular site needs.

The 980 Flow Meter also has several features designed to simplify installation, operation and maintenance. It has eight holes along the bottom of the case in order to provide access to power, sensor, control and communications wiring. The large LCD graphics display lets you quickly see the information you need, on site without the inconvenience of outdated paper charts. Industry standard MODBUS ASCII protocol has been incorporated, which will allow your MMI, SCADA or DCS system to directly communicate with the 980 Flow Meter without the use (or additional cost) of a PLC.

The 980 Flow Meter is ideal for:

	Influent Monitoring Effluent Monitoring
	WWTP Process Monitoring
	NPDES Stormwater Compliance
	CSO Monitoring
	Long Term/Permanent Flow Monitoring

Features/Benefits

	Three Different Level/Flow Sensing Technologies: Non-contacting ultrasonic; submerged pressure; Doppler velocity.
	Advanced Monitoring: Measures flow, level, pH, temperature, rainfall, and more.
	Large, Easy-to-Read Graphics Display: Provides maximum amount of graphed or tabular data at a glance.
	Flexible Power Supply: Automatically regulates input voltage (100 to 230 VAC, 50/60 Hz).
	Data Logging: Minimum of 396 days of three channels of user-selected readings at 15-minute intervals. Up to 300 events.
	Numeric Keypad: Sealed-membrane switch keypad. Audio signal confirms keystroke has registered.
	Built-in Flow Equations: Simply select the primary device. Or use the Manning Equation. For custom applications, enter up to 99 head-versus-flow data points. You select the level and flow units.
	Seven External Analog Inputs: Consolidate 4-20 outputs from other monitoring equipment into a standard format.
	Simple Documentation: Generate charts, graphs, and reports with American Sigma´s software package.
	Alarm Relays: Four user-assignable, setpoint and trouble alarms.
	Pacing: Will pace samplers or other equipment in proportion to flow.
	Water-Resistant Enclosure: Environmentally sealed NEMA 4X case for longer life and minimal service.
	Modbus® SCADA Communications: The Sigma 980 Permanent Flow Meter incorporates MODBUS Protocol for use in SCADA (Supervisory Control and Data Acquisition) systems. (MODBUS is a trademark of Scheider Automation, Inc.)

Address: Hach/Marsh-McBirney, 4539 Metropolitan Ct.
Frederick, Maryland 21704 USA
Telephone: U.S. and Canada 1-800-368-2723
Outside the U.S. 1-301-874-5599 - Fax: 1-301-874-8459