Application Notes and Case Studies


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Non-Contacting Flow Meters for Dredging Slurry 

Case Study - Dredge Manufacturers Improve Operating Efficiency with Greyline Clamp-on Flow Meters 

Dredge operators need accurate real-time flow information to properly manage production. But dredging slurries are very abrasive and pumped at high velocity so flow measurement is difficult. Manufacturers find the solution with Greyline clamp-on flowmeters...

Solution for Acidic Flow Measurement

Case Study - Minera Escondida, Chile
Non-Contacting Flow Solution for Heap Leach Mining

The world's largest single producer of copper was faced with a challenge in their heap leaching process in the Atacama Desert of northern Chile. Finding an accurate, reliable non-contacting flow meter was a difficult task...

Thurston County Chooses Greyline Flow Meters

Thurson County, Washington
Comments on Greyline Flowmeters

Since 2007 Thurston County has deployed Greyline Area-Velocity Flow Meters in open channels resulting in thousands of dollars in savings every year. Read their comments here...

Pump Station Call Outs Solved

Case Study - Town of Eckville Stops Pump Station Call Outs With New PSL 5.0 Pump Station Level Controllers

Town operators were plagued by high level alarm call outs at two new sewage lift stations. Read how they used Greyline's hybrid ultrasonic level controllers with dual sensor capability to put an end to level alarms.

Clamp-on Sensors Solve Crude Oil Flow Problems

Case Study - Clamp-on Flowmeters
Solve Flow Problems At Crude Oil Battery Site

Wax and solids build-up were plugging off pipes and in-line flowmeters at this oil battery site in Alberta. Read how Petrobakken Energy solved the problem by switching to Greyline DFM 5.0 Doppler Flow Meters with non-contacting ultrasonic sensors.

Wastewater Level Measurement Techniques

Wastewater Level Measurement Techniques

Chapter 36 from the Wiley & Sons publication: Environmental Instrumentation and Analysis Handbook. This is an informative summary of applications and level instrumentation used in Wastewater Treatment Plants.

Golf Course Irrigation with Greyline TTFM 1.0 Transit Time Flowmeter

Case Study - Golf Course Irrigation
Flow Monitoring from Outside a Pipe

A new TTFM 1.0 Transit Time Flowmeter monitors and logs irrigation water pumped to sprinklers at Summerheights Golf Links. The clamp-on flowmeter is used to comply with a Ministry of Environment permit.

Irrigation Water Flow Meter

Case Study - Irrigation Water Flow Measurement
For Open Channels and Partially Filled Pipes

Greyline AVFM Area-Velocity Flow Meters monitor and totalize irrigation water distributed through a network of canals, channels and pipelines in the United Irrigation District.

Submerged Flow Solution

Case Study - Solution for Irrigation Water
Flow Monitoring in Submerged Culverts

Greyline DFM 5.0 Doppler Flow Meters with waterproof ultrasonic sensors measure flow in submerged concrete culverts in the Raymond Irrigation District in Alberta, Canada.

Area-Velocity Flowmeters in Denmark 

Case Study - Area-Velocity Flowmeters in Denmark

Greyline AVFM Area-Velocity Flow Meters are installed thoughout the country by Teletronic Denmark to monitor municipal sewage and stormwater. Application photos and descriptions illustrate flow monitoring in manholes and open channels.

Quarry De-Watering Flowmeter 

Case Study - Quarry Dewatering Flowmeter
at the Bray Quarry in Eastern Ontario

A Greyline AVFM Area-Velocity Flow Meter monitors and data logs water discharged from the Bray Quarry to the South Raisin River. The Quarry is required to measure flow for environmental permit compliance.

Dear Greyline...

DLT 2.0 Differential Level Transmitter
Open letter from a Greyline customer

The septage receiving station in Whynott's Settlement, Nova Scotia needed a simple, compact solution to control VFD-driven vertical turbine pumps, chlorine injection plus flow through a V-Notch Weir with display and 4-20mA outputs...
Solution: the Greyline DLT 2.0 Differential Level Transmitter

Troubleshooting with Portable Greyline Flowmeters

Case Study - Flowmeter Troubleshooting
at The Township of North Glengarry

An Ontario municipality deploys Greyline portable flowmeters to solve flow rate discrepancies between a magmeter installed on the forcemain in their pump station and an open channel flowmeter at the sewage lagoon.

Greyline OCF for WWTP Influent Flow 

OCF 5.0 Open Channel Flow Monitors
Monitor Infulent at Long Sault WWTP Plant

After 16 years of service, the Long Sault WWTP replaced two older Greyline Open Channel Flow Monitors with new data logging OCF 5.0 models. This SBR treatment plant's influent is measured with flow through two 6" Parshall Flumes.

Greyline SLT for Culligan Water Plant Tank Level 

SLT32 Ultrasonic Level Monitors
for Water Bottling Plant Level Control

Culligan Water installs Greyline SLT32 Level Monitors to control tank levels in their bottling plant in Calgary, Alberta. With non-contacting ultrasonic sensors the SLT32's control fill and discharge valves in five tanks containing spring water, reverse osmosis water and distilled water.

Water Accountability - Using Greyline Stingrays to Identify Excess Flow

Case Study - Water Accountability
Portable Monitoring Instruments Solve Flow Rate Mystery

The Glen Walter Sewage Collection System was built to service 1,080 customers in 1989. At the time the population was 850 but by 1995 the sewage treatment plant had already reached capacity. Plant operators and the municipality had concerns about the excess flow...

Greyline Doppler for Sand Slurry Flow

DFM 5.0 Doppler Flow Meter
for Frac Sand Slurry Flow Monitoring

CanFrac Sands Ltd. of Lloydmister, Saskatchewan install a Greyline DFM 5.0 Doppler Flow Meter to measure fracturing sand slurry when their in-line flowmeters were being damaged by the  abrasive slurry.

Greyline AVFM for Lagoon Discharge Flow

AVFM 5.0 Area-Velocity Flow Meter 
Monitors Sewage Lagoon Discharge Flow

The Township of South Glengarry installs a new Greyline AVFM 5.0 Area-Velocity Flow Meter to measure continuous discharge from their municipal sewage lagoon. The sealed ultrasonic sensor is mounted in a horizontal 12" PVC pipe. The AVFM replaced a magnetic flowmeter that was unable to measure seasonal low flow rates.

Greyline LIT for Swimming Pool Level Control 

LIT25 Level Indicating Transmitter 
Controls Swimming Pool Level

A Surge Tank is used at the Okotokes Rec Centre Swimming Pool to regulate pool level. By monitoring level in a surge tank the non-contacting Greyline LIT25 Level Indicating Transmitter controls makeup water flow through a solenoid valve.  


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Information in this document is subject to change without notice.