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) CFB Specifications
More Specs Outputs -SDI-12, RS232, RS485 Bubble Rate - User Definable Purge Pressure -User Settable - 50psi Max (Default) Enclosure -Nema 4 Fiberglass 12 x 15 x 7.5
CFB Pneumatic System Single Orifice Sensor
CFB Dual Orifice Option
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
Dual Orifice Bubbler Dual Pressure Measurements – Measure Inflow and Outflow Density Measurement – Measure Water Density 2 Outputs - Orifice Tube Connections Desiccant Mounts Outside of the Enclosure
Setup The CFBs 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
Setup -Continued 3 Ways to View and Modify the CFBs 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
Setup -Continued There is a Visual Printout of the Menu Tree on the Inside of the Enclosure Door.
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.
Setup -Continued -SDI-12 Commands -View and modify the CFBs default setting via SDI-12 commands, using your data loggers 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.
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. Purging the Orifice Tube