PDFM-IV Portable Doppler Flow Meter

• Strap-on Ultrasonic Sensor
• Internal Battery and/or AC Powered
• Fast, Easy Operation
• Built-in 3-Key Calibrator
• Programmable Totalizer
• 50,000 point Data Logger
• RS232 Serial Output and Windows software
• 4-20mA Output
• Adjustable Sensitivity

It's ideal for flow troubleshooting, balancing and checking performance of permanent flow meters. The new PDFM-IV is fast and easy to operate – you can mount the sensor on the outside a pipe in less than a minute. Use the built-in keypad and calibration menu to set up the flowmeter for your application. The PDFM-IV works on any liquid containing bubbles or solids and is recommended for "difficult liquids" like wastewater, slurries, sludge, chemicals, viscous liquids and abrasives. Measures flow through most metal and plastic pipes including PVC, ductile iron, carbon steel and stainless steel.

The Greyline PDFM-IV is AC/DC powered with a built-in battery and charger. With its 4-20mA output you can even use the PDFM-IV as a spare transmitter in critical applications. For flow studies and troubleshooting use the built-in 50,000 point Data Logger. Retrieve data logs with 'Greyline Logger' software – included free with each PDFM-IV. Connect the RS232 output directly to the serial port on your PC or Laptop, or by dial-up connection through modems and phone lines.

DFM-IV Doppler Flow Meter

• Non-Contacting Ultrasonic Sensor
• Large, 4-Digit LCD Display
• 10-Digit Totalizer
• Isolated 4-20mA (1000 ohm)
• 3 Programmable Control Relays
• Adjustable Sensitivity
• Intrinsically Safe Sensor Option
• Built-in 3-Key Calibrator
• RFI Rejection Filters

Measure flow from outside a pipe. The Greyline DFM-IV is ideal for "difficult liquids" that would damage regular flow meters - wastewater, slurries, sludge, chemicals, viscous liquids and abrasives. There is no obstruction to flow and no pressure drop. The standard, strap-on ultrasonic sensor fits any pipe 1/2" (12.5 mm) Inside Diameter or larger. The electronics/display enclosure can be mounted nearby.

Use the isolated 4-20mA to transmit flow to remote displays, recorders or controllers. The 3 programmable relays can be used for flow control, pump protection or flow proportionate pulse. Calibration is easy with the built-in 3-key calibrator. Display and totalize flow in your choice of engineering units (gallons, liters etc.)

Sensor cable can be extended up to 500 ft. (152 m) with no loss of signal. The DFM-IV can be equipped with intrinsic safety barriers for sensor installation in hazardous rated locations. Other options include high temperature sensors, dual-head sensors and a built-in 50,000 point Data Logger.

DFS-II Doppler Flow Switch

• Non-Contacting Ultrasonic Sensor
• Easy Calibration
• Accurate and Repeatable
• 5 amp DPDT Control Relay
• Adjustable ON/OFF Set-Points
• Adjustable Time Delay
• Relay Status LED
• Intrinsic Safety Option

Control Flow from outside a pipe. Recommended for "difficult liquids" including wastewater, slurries, sludge, chemicals, viscous liquids and abrasives. The Greyline DFS-II is ideal for pump protection or to activate flow/no-flow alarms.

The DFS-II strap-on Sensor mounts on any pipe over 1/2" diameter without cutting the pipe or shutting down flow. It installs in minutes and requires no maintenance. Includes one 5 amp DPDT control relay with 0-60 second adjustable time delay. Bright LED indicators show relay status and signal strength. Electronics are housed in a watertight enclosure and Sensor cable is shielded and can be extended up to 500 ft. (152 m).

MFS1000 Microphone Flow Switch

• Low Cost
• For Liquids and Solids
• Non-Contacting Acoustic Sensor
• 5 amp SPDT Control Relay
• Sensitivity/Set-Point Adjustment
• Power and Relay Status Indication
• Watertight Enclosure

Use this low cost flow/no-flow switch for liquids or solids. The acoustic Sensor mounts on the outside of any pipe and listens for flow noise (like a microphone). Recommended for liquids, pneumatically conveyed or gravity flow solids. Adjust the Switch's sensitivity for flow/no-flow control. Remote mounted electronics amplify the flow noise signal and activate the control relay at the adjustable flow noise level.

The Greyline MFS100 face panel includes power and relay indicator LED's. The Sensor includes armored, flexible cable for connection to the electronics enclosure.