low cost flow meter Introduction The T3 series is specially designed for urban water supply and building-use according to the GBT 778.1-2007,ISO-4064,JJG162-2009 standard. The conventional water meters suffer from the drawbacks that they are only operable at a higher flow rate and are insensitive to a small flow rate. However, the water meter can help tackle the bottleneck. And the meter is highly adaptable to diversified industrial conditions. The water meter be adapted by the company’s newly-developed unique advanced transit-time measurement technology , with the remarkable features of low power consumption, wide measuring range ratio, stable and reliable measurement. In the structure, the components take the IP68 program, that is, each component is of an IP68 protection level, to ensure long time operation though water in the inside meter.The wireless power and various communication interface can be matched to the meter to achieve remote meter reading. This series of water meter’s production process is automatic or semi-automatic, including automatic detection of circuit boards, the automation of the circuit board’s high-low temperature test machine, the automation of potting and calibration process, ensuring that every machines out of the factory are qualified. Features l Double beam ultrasonic sensors for high accuracy and reliable operation l Less than 0.01 m/s starting velocity l Multi line 9 digital LCD accumulative flow and 4 digital for instantaneous flow l Automatic power saving function under the empty pipe or long-term fluid stationary state l IP68 protection, ensure long-term operation though water in the inside meter l Date cumulative record and data acquisition function l Various kinds of communication interface:TTL levels pulse output and USART interface,convenient to connect the low power consumption equipment; RS485; Infrared communication interface; support CJ-188 communication l Support MODBUS,M-BUS ,HART communication protocol l Output: Two way isolated pulse output(pulse equivalent and output pulse can be arbitrary programmed); two-wired system 4-20mA output l Software online upgrade function l With the two way PT1000 temperature transducer, which can realize the heat measurement l Built-in batch controller and time accumulator l Various of Units selected, including Cubic meter, USA gallon, Cubic feet and Liter l Built-in Lithium battery for 6 years life expectancy Data Sheet
Item | Specification |
Measurement Range | Water, Sewage, Seawater(Other liquid need to customized), liquid should be full of the pipeline |
Medium Temperature | 0.1-30 |
Working Environment | Temperature:-10~45:Humidity≤100%(RH) |
Working Pressure | 1.6MPa/2.5Mpa optional |
The sensitivity of upstream flow field | U3 |
The sensitivity of downstream flow field | D0 |
Climatic and mechanical environment class | C class |
Electromagnetic compatibility class | E2 class |
Communication Interface | RS485/USART/Infrared |
Output Signal | Two way OCT output/TTL pulse output/4-20mA output |
Power supply | Built-in Lithium battery(3.6V)/ External DC 8~36V |
Protection Class | IP68 |
Digital Display | Multi line 9 digital LCD display accumulative flow, 4 digital display for instantaneous flow, state prompt and units |
Data Storage | EEPROM/FLASH |
Measurement Cycle | Measuring:1 times/second(2~4 times/second optional); Verification; 4 times/second |
Power Consumption | over 2.7AH/Year, 6 years life expectancy |
Performance Error Curve
Choose the installation point
ps:Arrow direction is fluid flow direction. Installation Method (1)Cut the pipeline on the installation point, the cutting length according to the water meter dimension(Water meter length L+sealing gasket thickness+10mm)
(2)Pls choose 3 point on the flange to be spot-welded, then take off the water meter, finish full welding the flange
(3)After the welding flange cooling, pls install the water meter between the flange with sealing washer and fasten the screw
Communication and Signal Output
Can complete the wiring junction without opening the water meter cover Provide below communication interface and output 1. RS485 2. M-BUS 3. DC8-36V 4. Two-wired system 4-20mA output 5. OCT1(open collector output 1) 6. OCT2(open collector output2) 7. C1(TTL level pulse output 1) 8. C2(TTL level pulse output 2) PS: when ordering, you can choose any two of the above communication interface or output, lead to the external junction box