Meter for tank monitoring, pump control
Simple, Low Cost Level
with Display, 4-20mA output and relay.
Pump Station Level Controller
for lift stations and wet wells
with ultrasonic sensor and dual-technology sensor feature.
Differential Level Transmitter for
mechanical barscreen level control
plus open channel flow monitoring.
Greyline Flow Meters available in Vancouver, Victoria, Burnaby, New Westminster, Surrey, Abbotsford, Kelowna, Kamloops, Vancouver Island, Prince George and throughout BC.
Greyline Portable Flow Meters in Vancouver
Greyline PDFM Non-Contacting Doppler Flow Meter
Displays, Datalogs Transmits and Totalizes Flow in Closed Pipes
Versatile, Easy to Use
Use a Greyline PDFM Portable Doppler Flow Meter to monitor and balance flow, or to troubleshoot flow problems in pipes. It is ideal to full evaluate performance of in-line flow meters and can be installed, calibrated and started-up in minutes. Use it for projects where a permanent flowmeter is not required or to temporarily replace installed flow transmitters.
Ideal for Problem Liquids
The PDFM ultrasonic sensor is on the outside of a pipe. An clamped acoustic pulse is reflected back to the sensor from particles or gases in the flowing liquid. The flow rate of any fluid can be measured as long as it contains air bubbles or solids. It is ideal for wastewater, slurries, sludge, and most chemicals, acids, caustics, and lubrication fluids.
With its internal battery the PDFM can be operated all day and then recharged overnight. For continuous use it can be powered by a supplied 110-240VAC wall plug adapter. A 300,000 point data logger is built-in.
Quick, Easy Flow Measurements from Outside a Pipe
Each Greyline PDFM comes complete with carrying case, rugged watertight strap-on sensor and stainless steel mounting kit. Use the simple 5-key menu system to select units of measurement and to calibrate to any pipe diameter ½” (12.5 mm) or larger.
Simple start-up and Calibration
Sensor mounting and a full calibration can be done in just a few minutes. It is fast and easy! Put coupling compound ( ) on the sensor face gel included and mount on the outside of a pipe with the stainless steel mounting the sensor bracket (supplied). five Use the -key calibration system to enter pipe diameter and to select your choice of engineering units (gallons, litres etc.) The PDFM will immediately begin to display, transmit and totalize.
No Calculations – No Programming Codes
Select your choice of display units: the PDFM will display and totalize flow volume in gallons, liters, cubic feet or cubic rmeters. If you change from one measurement system to another, the PDFM will automatically and instantly calculate and convert the flow display and totalizer. Calibrate to pipe size using the keypad to enter inside diameter.
Built-in 50,000 point Data Logger and PC Software
Set up the PDFM's data logger to store time and datestamped flow values from 1 second to 5 minute intervals. Or use the convenient ‘Flow Report’ format where total, minimum,
maximum and average flow rates are stored in your choice of hourly or daily summaries. Transfer flow logs to your PC or laptop through the PDFM's output. Greyline Logger software (included) displays data in both graph and table formats and exports to graphic or text file formats for use in other programs.
“Sleep Mode” for Extended Data Logging on Battery Power.
Sleep mode extends battery life for long-term data logging at locations where AC power input is not available. Between logging intervals the flowmeter drops into a stand-by mode until a flow reading is requested by the data logger. Flow rates are sampled continuously for 10 seconds and then the PDFM returns to sleep until the next logger point is required. With 5 minute sample intervals the PDFM can data log for about 18 days on battery power.
New Signal Processing for reliable Accuracy
The PDFM Doppler flow algorithm filters out background noise and interference. The digital signal processor discriminates against weak and distorted signals. When the processor cannot measure accurately the meter will display zero flow and indicate low signal confidence.
Battery Powered a Full Day’s Work
With its built-in rechargeable battery, you can operate the PDFM . NiMH up to 18 hours continuously. Display brightness is adjustable to conserve power. (100-240VAC50/60Hz) to activate the 4-20mA output Plug into an AC outlet and recharge fully in to hours. You can continue to use the PDFM while charging.
Ideal for Tough Flow Applications
The PDFM works best with difficult liquids applications that would damage regular flow meters. Because the sensor is mounted on the outside of the pipe, there is no contact with the moving fluid. The sensor straps onto the outside of pipes ½ (12.5 mm) ID or larger and measures flow in common pipe materials: PVC, carbon steel, stainless steel, cast iron, fiberglass, and lined pipes…any pipe that conducts ultrasound.
Doppler signals cannot be transmitted through pipe walls which contain air pockets (materials like concrete and wood), or loose insertion liners (with an air gap between the liner and pipe wall). Because the sensor is so easy to install you can test any application and pipe material in a few minutes.
How it Works
The PDFM ultrasonic sensor injects high frequency sound through the pipe wall and into the flowing liquid. Gas bubbles or solids suspended in the liquid reflect the ultrasonic signal back to the sensor. When this sound is reflected from moving bubbles or particles it is returned to the sensor at an altered frequency. This frequency shift is called the Doppler effect. The PDFM continuously measures the change from its transmitted frequency to the received frequency to accurately calculate flow.
PTFM Portable Ultrasonic Flowmeter
Accurate Flow Measurement of Clean Liquids with Non-Contacting Transducers
Non-Contacting Flow Measurement
Recommended for fluids like water, glycol, oil and most chemicals. The PTFM ultrasonic transducers strap-on the outside of pipes from ½" to 48" (13 to 1200 mm) diameter. The ultrasonic signal works through all common metal and plastic pipe materials. Transducers can be mounted without shutting down flow and there is no obstruction or pressure drop.
User-Friendly Operating System
Calibration is easy with the onscreen menu system. Just enter the pipe diameter, wall thickness and pipe material. The PTFM is powered by an internal, rechargeable NiMH battery or can be operated continuously with AC power adapter. Each PTFM includes a watertight carry case, transducer set, cables and mounting clamps.
Measures Flow from the Outside of a Pipe
The PTFM Portable Transit Time Flow Meter works by measuring the “transit time” or “time of flight” for ultrasonic sound pulses transmitted from one transducer to another. The transit time in the direction of flow is faster than the transit time against the flow. By comparing these differences with precision timing circuits, the PTFM is able to accurately calculate the flow rate.
Choice of V, Z or W mounting method depends on the application and pipe diameter. VMount is the most common method while Z-Mount is used for larger pipes or weak signal applications and W-Mount for smaller pipes.
Works with Common Pipe Materials
Mount the ultrasonic transducers on the outside of metal or plastic pipes including carbon steel, stainless steel, ductile iron, cast iron, PVC, PVDF, fiberglass, copper, brass, aluminum and pipes with bonded liners including epoxy, rubber and Teflon. Avoid pipes made with porous materials (e.g. wood or concrete) or with loose insertion liners.
Measures Clean Liquids in Full Pipes
The PTFM Portable Transit Time Flow Meter is designed to measure clean, non-aerated liquids like water, chemicals and oils with less than 2% solids or bubbles . The ultrasonic transducers can be mounted on vertical or horizontal pipes.
Simple Menu System for Easy Start-up and Calibration
Calibration and start-up can be done in a few minutes. Use the built-in 5-button keypad to enter the pipe material and OD, wall thickness and fluid type. The PTFM will display the correct transducer separation distance. Secure the stainless steel pipe clamps and align the mounting brackets on the outside of the pipe. Put coupling compound (included) on the transducer faces and insert them into the mounting brackets. The PTFM will immediately begin to display, transmit and totalize flow.
Built-in Data Logger with Windows Software Included
Set up the 300,000 point data logger to store time and date-stamped flow readings from 10 second to 5 minute intervals. View the convenient on-screen 'Flow Report' where total, minimum, maximum and average flow rates are stored in a 24 hour daily summary. Transfer flow logs to your PC or laptop through the PTFM's USB outpu t. Greyline Logger software (included) displays data in both graph and table formats with one-click export to Microsoft Excel®, images or CSV files for use in other programs.
Easy to Install
The PTFM Portable Transit Time Flow Meter is designed to measure clean liquids in full pipes . I t works by injecting sound through the pipe wall and into the flowing liquid. The battery-powered flow meter, transducers, mounting clamps and accessories are supplied with a rugged watertight carrying case. Use it for troubleshooting, flow studies and for testing calibration of inline flow meters. The PTFM works on metal and plastic pipes and measures forward or reverse flow. A built-in data logger and Windows software is included.
Easy to Calibrate
Use the 5-button keypad and menu system to set up the flowmeter by entering the pipe material, diameter and wall thickness. The PTFM calculates the transducer separation distance and mounting method automatically.
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Information in this document is subject to change without