Flow profile of the flow sensor is similar to the type of the document. A set of spiral guide vane is positioned at the entrance side. When the fluid enters the flow sensor, the guide vanes are forced to produce a violent vortex flow. When the fluid enters the diffusion section, vortex flow by the effect of the return flow, began to make a second rotation, the formation of gyro type vortex precession. The precession frequency and magnitude of the flow capacity is proportional to, is not influenced by the fluid physical properties and density, the detecting element measured fluid quadratic rotating precession frequency can be in a wide range of flow to obtain good linearity degree. Signal and amplified by preamplifier, filter, shaping conversion to and is directly proportional to the velocity of the pulse signal, then with temperature and pressure detection signal is sent to the microprocessor for integrating processing. Finally, the measurement results will be displayed on the LCD screen (instantaneous flow, tired product flow, temperature and pressure data).
Feature 1 Accuracy: the accuracy of the system for temperature and pressure correction; 2 A, B used to distinguish the same size of different traffic flow range. 3.2 standard condition: T=293.15K, P=101.325KPa 3.3 use condition: Environment temperature: the relative humidity of -30, +65, 5% ~ 95% medium temperature: -20, +80,, 86KPa, 106KPa 3.4 electrical performance index 3.4.1 working power supply: A. external power: 24VDC + 15%, the ripple < 5%, applicable on 4 ~ 20mA output, pulse output, alarm output, RS-485 etc.; B. internal power supply: 1 sets of 3.6V lithium battery (ER26500), when the voltage is lower than 3.0V, there is an under pressure indicator. 3.4.2 power consumption: A. external power supply: <2W; B. internal power supply: the average power consumption of 1mW, can be used for more than two years. Main product parameters Flow meter specifications, basic parameters and performance indicators
Work pressure（ MPa）
1/3 of absolute value less than basic error limit
1.6; 2.5; 4.0
Option information Flow(Normal flow,Max.flow,Min.flow)/Design pressure of the tested media/Work pressure/ Quantity