Dn25-Dn1000 Crossed Diameter Handheld Digital Ultrasonic Water Flow Meter

DN25-DN1000 Crossed Diameter Handheld Digital Ultrasonic Water Flow Meter  Product profileThe ultrasonic flow meter has been upgraded based on the previous ultrasonic flowmeter which is still the main product line of the company. The new Version retains most of the excellent features and functions of the previous versions: the pulse measurement technology, the ultrasonic igniting and the small signal receiving circuits etc. The main improvements are made on the battery supply circuit and on the transmitting circuits. All other circuits are simply integrated into this new version without major modifications, due to the fact that we have already applied the most advanced measurement technologies and attained a more reliable model of ultrasonic flow meter.  Features* Large-screen LCD                                    * Non-contacting measuring* Built-in data-logger                                   * Built-in rechargeable battery* High accuracy measuring                         * Wide measuring range* Small and light                                          * RS-232 serial interface           Principle of measurement The Handheld Ultrasonic Flow Meter utilizes two transducers that function as both ultrasonic transmitters and receivers. The transducers are clamped on the outside of a closed pipe at a specific distance from each other.  The transducers can be mounted in V-method where the sound transverses the pipe twice, or W-method where the sound transverses the pipe four times, or in Z-method where the transducers are mounted on opposite sides of the pipe and the sound crosses the pipe once. This selection of the mounting method depends on pipe and liquid characteristics.  The flow meter operates by alternately transmitting and receiving a frequency modulated burst of sound energy between the two transducers and measuring the transit time that it takes for sound to travel between the two transducers.  The difference in the transit time measured is directly and exactly related to the velocity of the liquid in the pipe, show as follows: Whereθ is the include angle to the flow directionM is the travel times of the ultrasonic beamD is the pipe diameterTup is the time for the beam from upstream transducer to the downstream one Tdown is the time for the beam from downstream transducer to the upstream one ΔT=Tup -Tdown Specifications for DN25-DN1000 Crossed Diameter Handheld Digital Ultrasonic Water Flow Meter Linearity0.5%Repeatability0.2%Accuracy±1% of reading at rates>0.2 mpsResponse Time0-999 seconds, user-configurableVelocity±32 m/sPipe Size15mm-6000mmTotalizer7-digit totals for net, positive and negative flow respectivelyLiquid TypesVirtually all liquidsSecuritySetup values Modification Lockout. Access code needs unlockingDisplay4x8 Chinese characters or 4x16 English lettersCommunication InterfaceRS-232, baud-rate: from 75 to 57600. Protocol made by the manufacturer and compatible with that of the FUJI ultrasonic flow meter. User protocols can be made on enquiry.Transducer Cord LengthStandard 5m x 2, optional 10m x 2Power Supply3 AAA built-in Ni-H batteries. When fully recharged it will last over 12 hours of operation.100V-240VAC for the chargerData LoggerBuilt-in data logger can store over 2000 lines of dataManual Totalizer7-digit press-key-to-go totalizer for calibrationHousing MaterialABSCase Size210x90x30mmHandset Weight500g with batteriesApplication:    Outstanding Features:  ----the signal receiving circuits feature self-adapting performance so as to ensure that the user can easily operate the instrument without any adjustment.       ----the built-in rechargeable Ni-H battery can work continuously for more than 12 hours without recharging.   /* January 22, 2024 19:08:37 */!function(){function s(e,r){var a,o={};try{e&&e.split(",").forEach(function(e,t){e&&(a=e.match(/(.*?):(.*)$/))&&1