1. Sutron CFB Accubar Constant Flow Bubbler) Part Numbers Single Orifice Dual Orifice

2. Constant Flow Bubbler
-Self-Contained Bubble Gauge with built-in Logger -Log Capacity readings -SDI-12 Sensor -Easily Adjustable Bubble Rate -User Selectable Purge Scheduling -Auto-Purge on Blockage Detection

3. CFB Specifications Accuracy
0-20ft +/ ft ft. 0.05% reading
Desiccant Life -Approximately 1 year depending on humidity at station and bubble rate and purge rate
Average Power - 12V for 3 sec measurement 15 min. interval, no purge
Quiescent Current <1mA
Pump On Current - 4Amp max, 2.5Amp typical
Pressure Range - 0 – 25 psi ( ft or 17.5m of water)

4. More Specs Outputs -SDI-12, RS232, RS485 Bubble Rate Purge Pressure
-User Definable
Purge Pressure
-User Settable - 50psi Max (Default)
Enclosure -Nema 4 Fiberglass 12” x 15” x 7.5”

5. CFB Pneumatic System Single Orifice Sensor

6. CFB Dual Orifice Option

7. Dual Orifice Bubbler 2 Holding Tanks
2 Accubar Sensors / Can also use 1 Accubar
2 Outputs
Desiccant Mounts on Outside of the Enclosure
1 Pump

8. Dual Orifice Bubbler Dual Pressure Measurements Density Measurement
Measure Inflow and Outflow
Density Measurement
Measure Water Density
2 Outputs - Orifice Tube Connections
Desiccant Mounts Outside of the Enclosure

9. Setup
The CFB’s Default Setting Will Operate The System Properly For Most Users - Very Little Change To the Initial Setup Is Required. -Default Bubble Rate is 90 Bubbles per Min.
-Default Measurement Interval is 15 Minutes
-Default 10 Second Averaged Measurement -Default Measurement Units is Feet of Water
-Default Purge Pressure 50PSI

10. Setup -Continued 3 Ways to View and Modify the CFB’s Default Setting.
-Front Panel Key Pad and 2-Line Display
-SDI-12 Commands
-Command Line Interface Using Hyperterm or Procomm or Other Terminal Interface Software

11. Setup -Continued
There is a Visual Printout of the Menu Tree on the Inside of the Enclosure Door.

12. Setup -Continued -Command Line Interface
-Make Serial Connection to CFB using Hyperterm
-Baud Rate , No Parity, 8 Data Bits, 1 Stop Bit
Type “Help” at the command line prompt to see a list of commands including Measure, Log, Leak Test, Purge, Setup, Status…
For some commands type Help in front of the command to get more information. Such as Help Setup, or Help Log to view or download setup information or logged data.

13. Setup -Continued -SDI-12 Commands
-View and modify the CFB’s default setting via SDI-12 commands, using your data logger’s SDI-12 Interface
-Setting the Stage Level with SDI-12 Command
0XS ! – This command sets the water level reading to feet of water
-Changing measurement units
0XUP+4+3! – This command sets the units of water level measurement to Meters of Water (4) with 3 Right Digits resolution
See CFB Manual For a Complete List of SDI-12 Commands.

14. Purging the Orifice Tube
2 Setup Options for Purging
Auto Purge – Schedule an Orifice Line Purge at Regular Scheduled Interval
AutoBlockage Detection
If Auto Blockage Detection is Enabled the CFB Will Save Battery Life and Desiccant Life By Purging Only When a Blockage of the Orifice Line is Detected.

15. Bubbler Line Termination