Sewage flowmeter plant

Sewage flowmeter plant

1、 Characteristics
Suitable for measuring open channels, underground channels, and river channels, as well as circular, rectangular, trapezoidal, and other shapes of channels, unaffected by river water rise, tides, and downstream water level changes.
2、 Main technical indicators
Using simulated sensors (diversion model) can expand the flow measurement range
Nominal diameter: DN50, 100, 200, 400, 600, 800, 1000mm
Accuracy: ± 0.5%; ± 2.0% (when used with simulated sensors)
Measurement range (flow velocity): 0-1m/s to 0-10m/s
Conductivity of the tested medium: greater than 5 μ s/cm
Deep diving depth: (diving type) 10m
Sewage flowmeter plant

Electrode materials: Stainless steel 1Cr18Ni9Ti, molybdenum containing stainless steel OCr18Ni12Mo2Ti, titanium Ti, Hastelloy C, special
Temperature range of the tested medium: O ℃ to+40 ℃
Sensor output signal: 0-0.2mVp-p to 0-2mVp-p
Flow meter output signal: 0-10mA · DC and 0-10KHz, 4-20mA · DC and 0-10KHz Digital communication: RS485, RS232, HRAT
When placing an order, it is necessary to select the appropriate sensor based on the measured object and measurement conditions, and please note the following points: (1) The full-scale flow rate of the flowmeter should not be lower than the large flow rate of the measured fluid, and the commonly used flow rate should exceed 50% of the range to achieve high measurement accuracy. (2) The electrode material should be selected according to the corrosion condition of the measured medium. (3) The nominal diameter of the sensor is selected according to the following regulations: First, calculate the average flow velocity inside the sensor based on the large flow rate of the measured channel using equation (1): Vm=353.7 × (QM/D × D) (1): Vm - flow velocity passing through the sensor at large flow rate (m/s) Qm - large flow value of the measured channel (m3/h) D - nominal diameter of the sensor (mm). Then, calculate the head loss h=(V × V × M)/2g using equation (2): h-head loss (m) g-gravity acceleration (g=9.81m/square meter). For example, if the calculated h>0.3m, the nominal diameter of the sensor can be increased or added. Simulated sensor. (4) When used in conjunction with simulated sensors, to measure high flow rates and avoid excessive water level differences, simulated sensors can be used to divert flow. The external dimensions and installation dimensions of MGG type submersible electromagnetic flow simulation sensor *. When a sensor is used in combination with one or several simulated sensors, the actual flow rate is the flow rate measured by one sensor multiplied by a multiple, as shown in the following diagram (the number of simulated sensors plus 1). For example, when one sensor and one simulated sensor are used in combination, the actual flow rate of the channel is the flow rate indicated by the sensor multiplied by 2, and so on. This method can save instrument costs. When sensors and simulated sensors are used together, their measurement accuracy is ± 2.0%.