Global Water 800-876-1172 • globalw.com FP111-FP211-FP311 Global Water Flow Probe User’s Manual 151 Graham Road P.O. Box 9010 College Station, TX 77842-9010 T: (800) 876-1172 Int’l: (979) 690-5560, F: (979) 690-0440 E-mail: global@globalw.
Global Water 800-876-1172 • globalw.com Congratulations on your purchase of the Global Water Flow Probe. This instrument has been quality tested and approved for providing accurate and reliable measurements. We are confident that you will find the instrument to be a valuable asset for your application. Should you require assistance, our technical staff will be happy to help. Table of Contents I. Checklist • • • • • • Page 3 II. Inspection • • • • • • 3 III.
Global Water 800-876-1172 • globalw.com I. Flow Probe Checklist a. Flow Probe: FP111, FP211 or FP311 b. Flow Probe Computer c. Manual d. Carrying Case II. Inspection Your Flow Probe was carefully inspected and certified by our Quality Assurance Team before shipping. If any damage has occurred during shipping, please notify Global Water Instrumentation, Inc. and file a claim with the carrier involved. Use the checklist to ensure that you have received everything needed to operate the Flow Probe. III.
Global Water 800-876-1172 • globalw.com The flow computer incorporates true velocity averaging for the most accurate flow measurements. The computer’s primary display shows the instantaneous velocity and is updated once per second. A secondary display can be toggled between average velocity, minimum or maximum velocity, and a timer than can be used to measure the length of time in seconds that measurements are being taken.
Global Water 800-876-1172 • globalw.com c. To extend battery life, a low power mode is incorporated that will take effect after 5 minutes of inactivity. If the propeller is stopped and none of the pushbuttons are pressed for 5 minutes, this mode will take effect and the velocity displays will go blank. Press any of the 4 pushbuttons to start the computer back up for taking measurements or viewing stored data. d.
Global Water 800-876-1172 • globalw.com V. Average Velocity The Flow Probe is used to measure the average water velocity. Stream flow velocity varies for several reasons: a. The velocities vary throughout the flow’s cross-section due to the friction between the water and the channel. In general, the velocities are greater in the center of the flow and less near the bottom and sides of the channel. b. The water surges in velocity with time.
Global Water 800-876-1172 • globalw.com The Flow Probe can be used in three ways to determine average velocity in a stream. a. For small streams and pipes, the probe can be moved slowly and smoothly throughout the flow during average velocity measurements. Move the probe smoothly and evenly back and forth from top to bottom of the flow so that the probe stays at each point in the flow for approximately the same amount of time. The timer function in the display can be used to monitor the measurement time.
Global Water 800-876-1172 • globalw.com flow profile at the center of each subsection: zero the averaging function and move the Flow Probe vertically from the surface to the bottom, up and down, slowly and smoothly for 20-40 seconds to obtain a good average. The average velocity (obtained with the Flow Probe) times the area of the subsection (use your graph paper diagram) equals the flow for the subsection (Q = V x A).
Global Water 800-876-1172 • globalw.com VI. Computer Operation Main Display In the main display, the 4 buttons are labeled as shown. The MODE button toggles the upper display between average velocity minimum, maximum and timer. The label next to this display changes to correctly indicate which parameter is shown. The MENU button is used to view stored data, delete data, set the flow units to FT/S or M/S, and change the calibration setting. Press the MENU button for 2 seconds to enter the setup menu.
Global Water 800-876-1172 • globalw.com last reset. Press the RESET button when beginning to take any new measurement. Save to Memory When the SAVE button is pressed, the save data screen is displayed and the function of the buttons is changed. In this mode, the averaging and accumulation of minimum and maximum values is halted. The upper display shows the next empty memory location, in this case 024. The lower display shows the current average reading.
Global Water 800-876-1172 • globalw.com Setup Menu To enter the setup menu, press and hold the MENU button for 2 seconds. Each press of the MENU button cycles through 1 of 4 options, Press BACK at any time to return to the main display mode. The 4 menu options are View data, Delete All Data, Set Velocity Units and Set Calibration Number; press SET to enter the setup screen for the current menu function.
Global Water 800-876-1172 • globalw.com Delete All From the Delete All menu screen, press SET to delete all stored data. The upper display shows the number of stored data sets and the lower display reads zero. As a warning, the display is flashing. Press BACK to abort the Delete All function and return to the menu screen. Press SET to delete all data from memory. Once deleted, the data cannot be recovered. Set Flow Units From the Set Units menu display, Press SET to change the Flow Units.
Global Water 800-876-1172 • globalw.com Set Calibration Factor From the Set Calibration menu screen, press Set to change the calibration factor. The calibration factor is factory set and will generally not need to be changed. If you wish to change it, press SET. Use the UP and DOWN arrow buttons to select a new calibration factor. Press SET to save the new selection and return to the menu screen. Press BACK to return to the menu screen without saving.
Global Water 800-876-1172 • globalw.com VII. Specifications Range: Accuracy: Averaging: 0.3-19.9 FT/S (0.1-6.1 M/S) 0.1 FT/S (0.1 M/S) True digital running average Updated once per second Display: LCD, Glare and UV Protected Sensor Type: Turbo-Prop propeller with magnetic pickup Length and Weight: FP111: 3’ to 6’, 2 Lbs. FP211: 5’ to 15’, 3 Lbs. FP311: 2.5’ to 5.5’, 2 Lbs. Shipping Weight (US): FP111: 10 lbs. FP211: 13 lbs FP311: 5 Lbs.
Global Water 800-876-1172 • globalw.com b. Battery: The flow probe computer’s battery is not replaceable. It should last approximately 5 years with normal use. There is a low battery indicator on the display that will come on when the battery becomes too low to ensure accuracy. The display will also start to become dim as the battery voltage drops. The display may normally become dim and show the low battery indicator in very cold conditions. It should return to normal at warmer temperatures.
Global Water 800-876-1172 • globalw.com magnet is necessary to generate the signal for the computer. c. Remove the computer holder from the pole handle by pulling the holder up away from the pole. The holder should come off with a snap sound. Make sure there is no moisture around the plug or socket. If the plug and socket are wet, dry the parts off and place both in a warm place overnight. Push the computer holder back on to handle until you hear a snap sound.
Global Water 800-876-1172 • globalw.com Be prepared to describe the problem you are experiencing including specific details of the application, installation, and any additional pertinent information. b. In the event that the equipment needs to be returned to the factory for any reason, please call to obtain a RMA# (Return Material Authorization). Do not return items without a RMA# displayed on the outside of the package. Clean and decontaminate the FP111/211 if necessary.
Global Water 800-876-1172 • globalw.com Appendix A: Calculations for Partially Filled Round Pipes B 0.01 0.02 0.03 0.04 0.05 0.06 0.07 0.08 0.09 0.10 0.11 0.12 0.13 0.14 0.15 0.16 0.17 0.18 0.19 0.20 0.21 0.22 0.23 0.24 0.25 0.26 0.27 0.28 0.29 0.30 0.31 0.32 0.33 0.34 0.35 0.36 0.37 0.38 0.39 0.40 0.41 0.42 0.43 0.44 0.45 0.46 0.47 0.48 0.49 0.50 C 0.0013 0.0037 0.0069 0.0105 0.0147 0.0192 0.0242 0.0294 0.0350 0.0409 0.0470 0.0534 0.0600 0.0668 0.0739 0.0811 0.0885 0.0961 0.1039 0.1118 0.1199 0.1281 0.
Global Water 800-876-1172 • globalw.
