Ifl 700 iq sludge level measurement - WTW - Envimart JSC - www.envimart.vn - ĐT: 028 77727979 - sales@envimart.vn - Nền tảng cung cấp thiết bị, vật tư ngành nước và môi trường.

1. IFL 700 IQ
Sludge Level Measurement
July, 2016

2. 2
“A sensor with the ability to locate and track
liquid/solid interfaces in solids settling clarifiers”
Interface
Principle

3. WWTP: where sludge level
measurement?

4. Principle
4
Ultrasonic measuring principle:
• Echo runtime: depth of
reflecting particles
• Echo profile characteristics:
density of reflecting particles
An ultrasonic sensor, located under the
surface of the liquid
Advantages:
• no moving parts
• never requires re-calibration
• seldom requires maintenance

5. 5
Smart signal processing for reliable sludge level measurement
raw data 🡪 signal processing 🡪 result
Easy way to ignore undesired changes of echo profile:
• Passing debris, rolling fluff, layer clouds
• Rising & falling of sludge layer due to passage of rake
Zero blanket, multiple echo situation…
Signal processing

6. Echo profile
6
Signal intensity
Bottom
Sludge
level
Settlement
zone
Clear water
Depth 2.43/0.62 m
Signal 28.1
Water surface

7. 7
Calibration-free (factory calibrated) 🡪
ready-to-go
Initial effort:
• Type in sensor immersion depth and
• Tank depth
(Advanced settings for demanding applications) IFL set up
Calibration/Settings

8. Maintenance
8
Maintenance-free automatic scraper
system
•Triple sealing
•High-tech materials (titanium, grivory)
•Operate without maintenance
→ no spare parts!
• No influence of bubbles
• Removal of algae layers
(smaller layers of grease or algae do not interfere)
IFL scraper

9. Sensor positioning
9
1. Keep distance to inlet (hydraulic
effects)
2. Avoid obstacles or walls
3. Use special accessory for moving
surface skimmers (deflector)
1. 3.
2.
Tank bottom

10. Wastewater Treatment - The Rectangular
Clarifier
10
Sensor location
Hopper

11. Wastewater Treatment -The Circular
Clarifier
11
Sensor location
IFL

12. 12
M
S
Starter Set
MIQ/WL PS SET
S
S S
Extension unit
MIQ/WL PS
M: Master
S: Slave
Radio connection I

13. 13
Network 1 Network 2
Network 4
Network 3
IQ SENSOR NET Controller
Radio connection II

14. 14
Radio connection III
IFL graph