Precision Transmission of Liquid Level in Open Tanks
The L100 Bubble-Tube Level System is a fully self contained instrument (liquid level system), requiring only connections to air or gas supply, dip tube and electrical power source to provide precise level measurment. Because only the stationary dip tube and the purge gas come in contact with the liquid, this system is ideal for applications involving hazardous locations or liquids which are highly corrosive, viscous, hot, (molten metal), explosive, slurry type or foodstuff. Some of the specific applications include waste and water treatment plants for municipalities and trash to energy plants. In addition, the electronic output from the L100 is compatible with almost all analog instrumentation, including local and remotely-located indicators, computers, data loggers, recorders and controllers.
The following ordering codes are sufficient to specify a complete bubble-tube system with the exception of the P/I transducer. The P/I transducer must be ordered separately. Please refer to ControlAir’s specifications for the Dahl P200 P/I Transducer.
Assemblies
| Ordering Code | Description |
| L100 | Basic bubble-tube system |
| L100R | Basic system with remote pressure sensing |
| L100A | Basic system with automatic blow-down |
| L100AR | Basic system with remote pressure sensing and automatic blow-down |
For a NEMA 4X Enclosure, add suffix E to end of part number. A large enclosure (L100A, L100AR, L100-L22) is needed when ordered with Digital readout.
Ranges
| Ordering Code | Description |
| L11 | 0-50″ WC to 0-166″ WC, specify |
| L12 | 0-167″ WC to 0-498″ WC, specify |
| L13 | 0-499″ WC to 0-830″ WC, specify |
Options
| Ordering Code | Description |
| L22 | Digital readout, scaled for range |
When ordering, it is necessary to specify the model number, range and all options in the following manner.
For a complete systems (remote sensing in NEMA 4X enclosure with digital readout):
L100RE
System with
remote sensing
in NEMA 4X enclosure
with digital readout | + | + P200 (0-60″ w.c.) |
For a panel without I/P transducer:
L100RE | + | L11 (for a range between 0-50″ and 0-166″ w.c.) |
The P/I transducer must be ordered separately. Please refer to ControlAir’s specifications for the ControlAir P200 P/I Transducer.
When ordering, please indicate the specific gravity of the liquid being measured if it is different from that of water.
