Model DFM 6.1
4Pages

Ideal for full pipes and any liquid containing gas bubbles or suspended solids Accurate Flow Measurement of “Difficult” Fluids from outside a Pipe Ideal for “Difficult” Fluids Greyline Doppler Flow Meters monitor the flow rate of dirty or aerated liquids including wastewater, sewage, slurries, abrasives, and viscous liquids. Recommended for full pipes and any fluid that contains solids or bubbles. External Sensor No Contact, No Maintenance The DFM 6.1 clamp-on sensor is mounted on the outside of any pipe 12.7 mm (0.5 in) diameter or larger. To measure velocity an acoustic signal is reflected to the sensor from moving particles or gas bubbles suspended in the fluid. Flow is calculated based on the configured pipe inside diameter. Installation is easy - without shutting down the flow system. No contact is made with the moving fluid and no pipe cutting or drilling is required. There is no fouling or scale build-up on the sensor. The DFM 6.1 Doppler Flow Meter includes an ultrasonic sensor, an easy to use 5-key configuration system, a large digital flow rate display with totalizer, isolated 4-20mA output, 26 million point data logger, and two programmable control relays. The sensor is classified as non-incendive for Class I Div 2 locations, and an intrinsically safe sensor is optional, for Class I Div 1 locations. Designed for “Difficult” Liquids The DFM 6.1 Doppler flow meter works best in applications that would defeat regular contacting flow meters. Because the sensor is mounted on the outside of the pipe, it is unaffected by abrasive or harsh fluids. There is no obstruction to flow and no pressure drop. I N F O @ P U L S A R M E A S U R E M E N T . C O M THE RIGHT METER FOR • Wastewater • Combined Sewers • Industrial • Natural Streams Effluent • Stormwater • Irrigation Water Enhanced Signal Processing & Industrial Noise Immunity for Reliable Accuracy The DFM 6.1 Doppler flow algorithm filters out background noise and interference. The high-speed digital signal processor discriminates against weak and distorted signals for increased reliability and accuracy. PUL S

Easy to Install Each DFM 6.1 Doppler Flow Meter includes a clamp-on ultrasonic sensor, an adjustable stainless steel mounting clamp, and sensor coupling compound. The sensor fits on the outside of any pipe diameter 12.7 mm (0.5 in) or larger. It takes just a few minutes to install. There is no need to shut down the flow. Simple, Single-Head Sensor design Ultrasonic signals are transmitted and received from a single-head sensor. The mounting clamp (included) ensures correct sensor alignment on horizontal or vertical pipes. The DFM 6.1 automatically self-tunes to the cable length up to 152.4...

Technical Specifications GENERAL SPECIFICATIONS Operating Parameters: Liquids containing suspended solids or bubbles minimum size of 100 microns, minimum concentration 75 ppm Electronics Enclosure: NEMA4X (IP66) polyester with a clear polycarbonate face Built-in 5-button keypad with English, French, or Spanish language selection ±2% of reading or 30 mm/s (1.2 in/s) whichever is greater. Requires solids or bubbles minimum size of 100 microns, minimum concentration 75 ppm. Repeatability: ±0.1%, Linearity ±0.5% White, backlit matrix — displays flow rate, relay states, 16-digit totalizer,...

DFM 6.1 Front & Side View SE4 Ultrasonic Doppler Sensor Greyline DFM 6.1 Doppler Flow Meter The DFM 6.1 flow sensor installs without cutting the pipe. It takes just a few minutes to mount on the outside of any pipe. Configuration is easy with the built-in, 5-button keypad. Select your choice of flow units and enter pipe diameter through the user-friendly calibration menu. Enable password protection to prevent tampering. Special Features • Digital processing system tracks flow signals accurately • Noise suppression circuitry filters background noise and electrical interference from...