FP101-FP201 Global Flow Probe User’s Manual Global Water The Leader in Water Instrumentation Visit Our Complete Online Catalog www.globalw.com • Call (800) 876-1172, 7:30 AM to 4 PM Pacific Time International: US (916) 638-3429 • FAX: (916) 638-3270 • E-mail: globalw@globalw.
Contents General Instructions 1 Average Velocity 2 Computer Operation 3 Computer Set-Up 4 Maintenance 5 Calculations 6 Extensions 7 Graphic Overview 8 Troubleshooting 9 Global Water Warranty 10
Congratulations on your purchase of a Global FP101 or FP201 Flow Probe! Our Flow Probe has been field-tested in several hundreds of locations throughout the world. Our customers praise the product’s ease-of-use, accuracy, durability, portability, and reasonable cost. Please follow the simple procedures for operation presented in this manual and you will be accurately and reliably monitoring realtime flow in no time.
Average Velocity The Flow Probe is used to measure the average water velocity. Streamflow velocity varies for two reasons: 1) The velocities vary throughout the flow’s cross-section. In general, the velocities are greater in the center of the flow and less near the bottom and sides of the channel. 2) The water surges in velocity with time. In a smooth running stream, the velocity at a specific point can easily vary 1-2 feet per second over the period of a minute.
Computer Operation The Flow Probe is calibrated at the factory. When you receive the product, you may wish to set the computer’s clock (see Computer Set-Up), otherwise you should not have to alter any of your computer settings. You will have to recalibrate the computer if you wish to change measuring units (English/Metric), and when you change your unit’s batteries (see Computer Set-Up). Normal battery life for the Flow Probe is 1 year or more. The Flow Probe computer has a simple 2- button operation.
Computer Set-Up The computer’s set-up sequence is entered automatically when the batteries are changed. You can also enter the set-up sequence at any time by holding both buttons simultaneously for 8 seconds. During the set-up sequence, all of the display segments are displayed first, and then “mi” appears for English units and “km” appears for metric units. The left button toggles between English and Metric units. If you wish to measure in English units (standard), or in “feet per second”, toggle to “mi”.
Maintenance Probe Handle: When the Flow Probe expansion joint becomes submerged, water enters the Probe handle. After use, dry the Probe by separating the two handle sections, draining the water inside the Probe handle, and letting the handle dry out in a warm place before reassembling. You can clean the Flow Probe handle with mild soap and water. DO NOT submerge the top of the pole and the computer. Water may cause the computer to short and a new computer will need to be purchased.
Calculations for Flow in Partially Filled Pipes B 0.010 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 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 0.1365 0.1449 0.1535 0.1623 0.1711 0.1800 0.1890 0.
Extensions The FP101 probe handle is expandable from 3’ to 6’ by loosening the locking nut on the handle, pulling out the top piece and retightening the nut. The FP201 is a three section rod expandable from 5’ to 15’. If you want to remotely read the computer, purchase a standard stereo phone jack extension cable from Radio Shack or your local electronics supplier. Pull the computer and computer holder up off the handle.
Global Flow Probe Graphic Overview FP101/FP201 - 8 Global Water Instrumentation, Inc. www.globalw.com • (800) 876-1172 • US (916) 638-3429 • FAX: (916) 638-3270 • E-mail: globalw@globalw.
Trouble Shooting If your Flow Probe does not seem to be functioning properly: 1. Blow on the propeller. The prop should spin freely and make a noise (chatter) when you blow on it. The prop should be loose on the shaft when you push it with your finger. If prop does not spin freely, rinse it with clean water or soak it in mild soapy water. 2. A small metal magnet covered with clear rubber is installed on the back side of the prop on one blade (or two blades if you ordered the low-flow option).
Global Water Warranty Our goal is to provide you with the finest water instrumentation at a reasonable price. Our products are always fully supported and 100% guaranteed. Global Water warrants that its products are free from defects in material and workmanship under normal use and service for a period of one year from date of shipment from factory.
