The EJA115 small flow transmitter is a differential pressure transmitter with an internal orifice plate, which is particularly suitable for small flow measurement. Output a 4-20mADC signal corresponding to the measured flow rate. There are six inner diameters of the internal orifice plate, ranging from 0.508mm to 6.350mm. By selecting differential pressure transmitters with different measurement ranges and internal orifice plates with different inner diameters, large-scale small flow measurements can be carried out. EJA115 can also communicate with each other through the BRAN controller, CENTUM CS/XL, or HART 275 controller for setting and monitoring purposes.