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.

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.

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

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.

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.

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. 

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...

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.

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.

LIT25 Level Indicating Transmitter 
Controls Swimming Pool Level

A Surge Tank is used at the Okatokes 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.