Instrumentation
Flow Indicators and Transmitters
DFM-IV Doppler Flow Meter PDFM-IV Portable Doppler Flow Meter
New DFM-IV Doppler Flow Meter
Non-Contacting Ultrasonic Sensor New! Greyline PDFM-IV

Portable Doppler Flow Meter
Strap-on Ultrasonic Sensor
Large, 4-Digit LCD Display Internal Battery and/or AC Powered 
10-Digit Totalizer Fast, Easy Operation
Isolated 4-20mA (1000 ohm) Built-in 3-Key Calibrator
3 Programmable Control Relays  Programmable Totalizer
Adjustable Sensitivity 50,000 point Data Logger
Intrinsically Safe Sensor Option RS232 Serial Output and software
Built-in 3-Key Calibrator 4-20mA Output
RFI Rejection Filters Adjustable Sensitivity
Portaflow Portable Transit Time Flow Meter DFS-II Doppler Flow Switch
New - Greyline Portaflow SE
Portable Transit Time Flow Meter
Strap-on Ultrasonic Sensors Greyline DFS-II

Doppler Flow Switch
Non-Contacting Ultrasonic Sensor
Internal Battery and/or AC Powered Easy Calibration
Easy Calibration and Set-up Accurate and Repeatable
50,000 point Data Logger 5 amp DPDT Control Relay
RS232 Serial Output  Adjustable ON/OFF Set-Points
4-20mA Output Adjustable Time Delay
Calibration is easy with the onscreen  Relay Status LED
menu system. Intrinsic Safety Option