• Built-in Standard (ISO 1438) flow formulas
• Flow-proportional control of sampler
• Adapts to any kind of weir or flume
• Built-in stormflow function
• UL approved

• Supplied with high accuracy Shuttle® Ultrasonic Sensor or Expert 3400 Hydrostatic Pressure transmitter result in better than a 0.2% accuracy flow calculation
• Maximum accuracy with measuring ranges down to 0- 4"
• Flow Converter 713 is calibrated from the front panel
• Easy to operate with setup information in English / Spanish or other user-specified language
• Security access code can be programmed
• Built-in totalizer with counter
• Indication of average flow (Volume/hour) actual, the last hour, today, the last 24 hours
• Indication of accumulated flow (Volume) actual, the last hour, today, the last day
• If 713 is set as an emergency stormflow meter, the number of stormflows, stormflow time and volume and start and stop time for the last stormflow are counted
• Alarm can be set for high and low flow, and excess of 1- and 24-hour volumes

The sensor of the Flow Converter 713 measures the depth  in the flume/weir and calculates the flow rate based on the standard curve for the flume/weir used. This is typically based on the equation:

The exponent (x) and the constant depend on the type of flume/weir used

The Flow Converter 713 can calculate flow on the basis of one of the three following principles:

• Preprogrammed formulas for different dimensions of the most common flumes and weirs such as Parshall and Palmer Bouwlus flumes and retangular or V-notch weirs based on ISO 1438.
• When using non-standard flumes or weirs the existing calculation formula can be programmed.
• For flumes where no calculation formula exists, a number of known Level-flow values can be entered, on the basis of these a point-linearization is made.