Tianjin Pressure Transmitter Standard,Vortex Street Flowmeter Flow Display Accurate Trouble Solution!Xi'an Huaheng Instrument Online Answer:When we use Vortex Street Flow Timing,there will be a phenomenon that Vortex Street Flow Meter has medium flow in the pipeline without signal output or instantaneous flow without display.In this case,how should we deal with it?

 

　　首先檢查電路接線及電源電壓是否正確；

 

　　First,check whether the circuit connection and power supply voltage are correct.

 

　　確認(rèn)管道中確實(shí)有流量，且大于可測(cè)流量下限；

 

　　It is confirmed that there is flow in the pipeline,and it is larger than the lower limit of measurable flow.

 

　　檢查小流量切除值的設(shè)定是否過大；

 

　　Check whether the setting of small flow resection value is too large.

 

　　如果電路接線及電源電壓正確，將靈敏度電位器及放大倍數(shù)電位器順時(shí)針調(diào)到底。

 

　　If the circuit connection and power supply voltage are correct,adjust the sensitivity potentiometer and amplification multiple potentiometer clockwise to the end.

 

　　如果流量仍無(wú)顯示，累積量又無(wú)變化，說明電路板有問題，則需更換放大板；

 

　　If the flow rate is still not shown and the cumulative amount remains unchanged,indicating that there is a problem with the circuit board,the amplifier board needs to be replaced.

 

　　如果有信號(hào)輸出，則應(yīng)檢查管道中介質(zhì)流量是否超出渦街流量傳感器的可測(cè)流量范圍；

 

　　If there is a signal output,it should check whether the medium flow in the pipeline is beyond the measurable flow range of the vortex flow sensor.

 

　　如果介質(zhì)流量在可測(cè)范圍內(nèi)，說明傳感器的傳感頭靈敏度已偏低，需重新調(diào)整靈敏度；

 

　　If the medium flow rate is within the measurable range,the sensitivity of the sensor head is on the low side and needs to be readjusted.

 

　　檢查傳感器好壞。將傳感頭兩引線從放大板上拆下，用萬(wàn)用表測(cè)量傳感頭兩引線之間的阻值和傳感頭兩引線分別對(duì)外殼的阻值，都應(yīng)大于2MΩ，否則需更換傳感頭；

 

　　Check the sensor.Remove the two lead wires of the sensing head from the amplifier board,and measure the resistance between the two lead wires of the sensing head and the resistance of the two lead wires of the sensing head to the shell respectively with a multimeter.The resistance values of the two lead wires of the sensing head should be greater than 2M,otherwise the sensor head should be replaced.

 

　　如果傳感器沒有問題，則檢查壓力變送器和鉑熱電阻是否損壞，如果都沒有問題，則可判斷智能流量積算儀損壞。

 

　　If there is no problem with the sensor,check whether the pressure transmitter and platinum resistance are damaged or not.If there is no problem,the damage of the intelligent flow accumulator can be judged.