TUA Series Ultrasonic Gas Flowmeter
●Multi-paths measurement, high stability
●High precision, good repeatability
●Wide rangeability, maximum measurement rangeability up to 1:700
●Very low starting flowrate
●No moving part for less maintenance
●Built-in communication module
●Low requirement for straight inlet and outlet pipe
●Long built-in battery life, can continuously work for at least 5 years
●Built-in corrector
Specifications
Measurement accuracy
●The measuring accuracy class within the range is: 1.0
●0.1Qmax~Qmax ≤ ±1.0%
●Qmin~0.1Qmax ≤ ±2.0%
●Repeatability：0.1Qmax~Qmax:≤±0.2%，Qmin~0.1Qmax：≤±0.4%
Ex Approval：Ex ib ⅡA T4 Gb
Protection Approval：IP65
Power supply
●Built-in 3.6V lithium battery, with real-time battery displayed
●Optional external power supply: 8~24VDC, ripple≤50mV
The following table provides the product types and specifications
Medium Temperature:-20℃~+60℃
●Environment Temperature：-20℃~+60℃
●Medium Pressure：0~1.0Mpa
●Optional built-in IoT module：2G/NB-IoT
●Optional two-way measurement
External Dimensions
External dimensions of ultrasonic flowmeter are shown in figure1 and 2. The unfilled sizes are listed in table 2. The flowmeter adopts flange connection, and the flange dimension follows standard of GB/T 9112 ~9113-2010 Steel Pipe Flange.
Figure1 External dimensions of TUA DN25-80
Figure2 External dimensions of TUA DN100-200
Installation Requirements
Built-in conditioner is standardly equipped in the meter. In the flow direction, the length of straight inlet pipe≥5DN, the length of straight outlet pipe≥3DN
Note：Installation requirments for meters without built-in conditioner : In the flow direction, the length of straight inlet pipe≥10DN, the length of straight outlet pipe≥5DN
Installation requirments for meters with two-way measurement: The length of straight inlet and outlet pipe≥10DN
LCD Display
●Total Volume: under standard condition 0~9999999999m³
under operating condition 0~9999999999 m³/h
●Instant flow rate: under standard condition 0~±999999m³
under operating condition 0~±999999m³/h
●Operation pressure:0~99999kPa
●Operation temperature：-99.9 ~+99.9℃
●Battery capacity： 
●External power access ： 
● Measuring state： 
● Failure state：
Mainboard system fault : 
Flow measurement fault：flow E-X
Pressure measurement fault: pressure E-X
Temperature measurement fault：temperature E-X
