Are bubbler systems still viable for measuring liquid level? Yes, they are. And Lesman can build one for you.
A bubbler system in an inexpensive yet accurate way to measure the fluid level in open or vented containers. A complete bubbler level measurement system consists of a source of compressed air, an air flow restrictor, sensing tube, and pressure transmitter.
Air bubbler systems contain no moving parts, making them suitable for measuring the level of water, viscous fluids, liquids with large quantities of suspended solids, slurries, sewage, drainage water and sludge. The only part of the sensor that contacts the liquid is a dip tube that is chemically compatible with the material being measured. Since the point of measurement has no electrical components, the technique is a good choice for most fluids and especially good for fluids classified as hazardous.
What makes the bubbler more safe is that the system controls are located outside the tank in a separate enclosure with only the pneumatic plumbing running to the tank, isolating the hazardous from the safe area.
Click the file icon to view the file online, or right-click on the file icon and select "Save Target As..." to download the file to disk for later viewing.
|Lesman Catalog Section: Level Measurement and Control Instruments||4.5MB|
|Lesman Bubbler System Diagram and Level Calculation Tips||133KB|
|Bubbler Theory 101: Air Bubblers for Liquid Level Measurement||195KB|
|Siemens Series 62 Constant-Differential Relay Specification Catalog||64KB|
|Siemens Series 62 Constant-Differential Relay User Manual||567KB|
|Siemens 91-HF Combination Filter-Regulator Specification Catalog||51KB|
|Siemens 91-HF Combination Filter-Regulator User Manual||138KB|
|Siemens SITRANS P DS-III Transmitter Specifications and Manuals||Varies|
|Honeywell SmartLine ST700 Transmitter Specifications and Manuals||Varies|
|Honeywell SmartLine ST800 Transmitter Specifications and Manuals||Varies|
Last Ed. Date: 11/23/2015 02:40 PM