Transit Time Ultrasonic Flow Meters   Overview Series TFXP Portable Transit Time Flow Meters feature the world’s most advanced non-invasive flow measurement technology – providing a measuring system with unsurpassed accuracy, versatility, ease of installation and dependability. Although designed primarily for cleaner liquids, the flow meter can reliably measure liquids containing moderate amounts of suspended solids or aeration. TFXP is designed for long- or short-term flow measurement surveys on full-pipe liquid systems and is ideal for verifying calibration of permanently mounted flow meters of all types. The flow meter features a tactile keypad, 24-hour battery (rechargeable), removable 200,000-event data logger (optional) and a 128 x 64 pixel, back-lit graphics display – all integrated into a rugged, watertight enclosure. TFXP systems utilize Dynasonics’ proprietary dual time-base time expansion algorithm, advanced DSP and digital cross-correlation. TFXP also provides an optical interface that allows operation of the Windows® ULTRALINK™ software utility. The software utility allows simple in-field programming, calibration and software upgrades. The cost-effective and versatile TFXP flow meter comes complete with all accessories necessary for measuring piping systems 2" [50 mm] and higher.       Technical Specification   TRANSMITTERS Power Requirements Internal 12 V lead-acid Gel Cell battery provides 24 hrs. of continuous operation @ 20 °C. Charging: Wall mount power converter. 115 or 230 VAC 50/60 Hz ±15% @ 5 VA max.; 12-15 VDC @ 2.5 VA max. Velocity -40 to +40 FPS [-12 to +12 MPS] Inputs/Outputs All output modules are optically isolated from earth and system grounds. One module and one datalogger may be installed. Standard Options 4-20 mA 800 Ohms max.; 12-bit resolution; passive or active Data Logger 200,000 event, 16-bit, integral DB-9 RS232C connection, can be removed and installed without disconnecting system power, data transfer rates to 57.6K. Other Options Pulse Output MOFSET, 0.21 Ohms, 100 V max., 0-2,500 Hz Relay Two separate Form C relays, 200 VAC max. @ 0.5 A resistive RS232C Data rate to 57.6K RS485 Supports up to 119 drops Heatflow Supports two 1000 RTDs, multiplexed, 12-bit resolution Display 128 x 64 pixel graphics LCD, LED back-lit. Two user selectable font sizes 0.35" [8.9 mm] or 0.2" [5 mm] 8 digit rate, 8 digit totalizer (resettable) Units User configured - Feet, gallons, ft3, mil-gal, barrels, acre-feet, lbs., meters, liters, m3, mil-liters, kg (with Heatflow option: BTUs, calories, Watts, Tons) Rate Rate time: sec, min, hr, day Totalizer (NET, FWD, REV or BATCH) gallons, ft3, barrels, acre-feet, lbs., liters, m3, kg (with Heatflow option: BTUs, calories, Watts, Tons) Ambient Conditions -40 °F to +185 °F [-40 °C to +85 °C], 0-95% relative humidity, non-condensing Enclosure NEMA 4X [IP-66] while open, NEMA 6 [IP-68] while closed, ABS with SS hardware. Electronic enclosure: 14.00W x 6.06H x 10.56D inches [355.6H x 153.9W x 268.2D mm]; 14.8 lbs. [6.7 Kg] Accuracy Flow Rate ±0.5% of reading at rates > 1 FPS for field calibrated systems; ±1% of reading at rates > 1 FPS [0.3 MPS] uncalibrated; 0.1 FPS [0.003 MPS] at rates < 1 FPS [0.3 MPS] Sensitivity Flow: 0.001 FPS [0.0003 MPS] Repeatability ±0.01% of reading Response Time Flow: 0.3-30 seconds, user configured, to 100% of value, step change in flow Security Keypad lockout, four digit user selected access code Approvals Ordinary Area ULTRALINK™ Utility IBM compatible, Windows® 95/98/2000/XP operating system TRANSDUCER Liquid Types Supported Virtually all non-aerated liquids Transducer to (Std.) 20 Feet [6.09 meters], (Opt.) lengths to 990 feet [300 meters] Transmitter Distance Pipe Sizes (Std.) 2 inches [50 mm] and higher; (Opt.) small pipe (less than 2" [50 mm]): please contact factory Environment NEMA 6 (IP68) Pipe Surface Temperature DTTN: -40 °F to +300 °F [-40 °C to +121 °C]; DTTH: -40 °F to +400 °F [-40 °C to +200 °C] Ambient Temperature -40 °F to +185 °F [-40 °C to +85 °C], 0-95% relative humidity, non-condensing Housing Material DTTN: CPVC, Ultem® and Nylon; DTTH: PTFE, Vespel®, Nickel-Plated Brass Installation (Std.) General Purpose; (Opt.) Class I Division 1, Groups C and D