GE ultrasonic flow meter, how to connect?

-

i'm wondering best way connect flow meter arduino uno.  ultrasonic flow meter multiple outputs.

http://www.ge-mcs.com/en/flow/ultrasonic-liquid/aquatrans-at868.html

http://www.ge-mcs.com/download/sensing-manuals/910-218d.pdf

i have experience hooking 10 dollar flow meter.

http://www.adafruit.com/product/828

the cheap model has voltage, ground, , signal output.  can powered arduino, , connect signal pin 2 using interrupts.  no problem.

the expensive model has sig (+) , rtn (-) outputs 4-20ma line , sig (+) , rtn (-) outputs frequency/totalizer line.  has it's own power line.

i'm assuming frequency/totalizer line pulse line?  can feed sig(+) line pin 2 , pulse line cheap model?  if so, ground return line?  better using 4-20ma analog line?

no, wish could, cannot test confirm.  i'm building has flow meter overseas, need guess correctly first time.  can make few code changes after fact, need understand how accept output arduino before send it.


stoutfiles wrote:
quote
so need guess correctly first time
don't guess when doing work this. research doing , calculate correct first time. guessing assumptions , lead frustration , errors.

read on 4-20ma current loop interfaces, have been around in industrial automation many many years.

normally, if wish read 4-20ma signal voltage based analog input, place precision resistor across loop generate voltage proportional loop current. typically resistor 250Ω resistor. resistor needs or better 0.1%.

with 4-20ma loop, have 1 - 5 volt signal @ arduino ananlog input.
4ma develop 1 volt drop across 250Ω resistor.
20ma develop 5 volt drop across 250Ω resistor.
and between proportional.

also, think needed protection, if sensor mounted distance away or near other equipment generates emi.
____
paul


Arduino Forum > Using Arduino > Sensors > GE ultrasonic flow meter, how to connect?


arduino

Comments

Post a Comment

Popular posts from this blog

invalid use of void expresion in FlexiTimer2 library

-
Image
hello, first post asking in forum patient if dont correctly   well, im trying make robot evades obstacles , uses interrupts in order distances. ive used flexitimer2 run void function each 5ms, problem whe try verify program says me there error in use of flexitimer.    code: [select] flexitimer2::set(1, 1.0/1000, rastreodistanciamin()); i copy code below, please can tell error , how solve it, ive been loking dont know do. thank you code: [select] #include <flexitimer2.h> #include <servo.h> //motor a int ena = 7; int in1=6; int in2 = 5; //motor b int in3=11; int in4=10; int enb=9; servo cabeza; //hc-sr04 device int echo = 13; int triger = 12; //it use hc-sr04 determine , return distance in front of him int calculodistancia(){   volatile int tiempo;   volatile int distancia;   digitalwrite(triger,low); /* por cuestión de estabilización del sensor*/   delaymicroseconds(5);   digitalwrite(triger, high); /* envío del pulso ultrasónico*/   delaymicroseconds(10);   tiem
Read more

error: a function-definition is not allowed here before '{' token

-
i'm new member. me pls code: [select] void manhinh1(){                              tempc = analogread(adc);   tempc = tempc * 0.48828125;                                          lcd.setcursor(0, 0); lcd.print("nhiet: ");                                      lcd.setcursor(7, 0); lcd.print(tempc);   lcd.setcursor(13,0); lcd.print((char)223);    lcd.setcursor(14,0); lcd.print("c");   if(max > min){     if (tempc > max)            {digitalwrite(fan, low);           lcd.setcursor(2, 1); lcd.print("lam mat.....");}     else if (tempc < min)           {digitalwrite(hot, low);           lcd.setcursor(2, 1); lcd.print("dang suoi...");           delay(10000); }     else if (tempc > min && tempc < max)           {digitalwrite(fan, high);            digitalwrite(hot, high);            lcd.setcursor(2, 1); lcd.print("on dinh!!");}              }    else if (max < min){    lcd.setcursor(0, 1);               
Read more

LED Strip Code

-
i downloaded code. here have several single leds flashing music microphone. in project, instead of single rgb leds, have 5 rgb led strips. need change in code? led strip 10m supernight rgb strip cut 5 equal strips. // arduino pin numbers const int do_pin = 2; const int ao_pin = 0; int sound; int led1 = 8; int led2 = 9; int led3 = 10; int led4 = 11; int led5 = 12;   void setup() {   pinmode(do_pin, input);   pinmode(led1, output);   pinmode(led2, output);   pinmode(led3, output);   pinmode(led4, output);   pinmode(led5, output);   serial.begin(9600); }   void loop() {     if (sound > 31) {     digitalwrite(led1, high);   }     if (sound < 31) {     digitalwrite(led1, low);   }     if (sound > 35) {     digitalwrite(led2, high);   }     if (sound < 35) {     digitalwrite(led2, low);   }     if (sound > 40) {     digitalwrite(led3, high);   }     if (sound < 40) {     digitalwrite(led3, low);   }     if (sound > 45) {     digitalwrite(led4, high);   }     if
Read more