Purchase should Principles 1. Install the transmitter of pressure sensitive axially perpendicular to the direction of gravity, if installed digital smart transmitter conditions, adjust the transmitter zero value to the standard fixed should be installed. [5] 2. The residual pressure not released, so that the sensor zero and get down. The best way to rule out the reason for this is to remove the sensor directly observe the zero level is normal pressure smart transmitters, try again if the normal replacement ring. 3. The pressure transmitter output does not change, then a sudden change in pressure transmitter output, pressure relief transmitter zero return. The reason for this phenomenon is most likely caused by a pressure sensor ring 4. meets the power requirements; whether the wiring between the power supply and the transmitter and load device error. If there is no voltage on the transmitter terminal block or reverse polarity can cause the transmitter no signal output. 5. Pressure Transducer and Transmitter housing in general needs to be grounded, the signal cable must not be mixed with the laying of power cables, sensors and transmitters around strong electromagnetic interference should be avoided. Sensors and transmitters in use should be periodic verification industry regulations. 6. When the user selects a pressure sensor and transmitter smart transmitters, we should fully understand the conditions of pressure measurement system, a reasonable choice according to need to make the system work in the best condition, and reduce the project cost. 7. transferred to a measurement on both sides of the diaphragm and filling liquid through the spacer element within. Electrodes measuring diaphragm on each side of the insulating sheet to form a capacitor. 8. Pressure transmitter requires checked once a week, once a month test, mainly to remove dust inside the instrument, carefully check the electrical components of the current value of output should always proofread internal pressure transmitter is weak, certain To the outside world apart with strong electricity. Two-wire transmitter: two-wire transmitter site refers to the control room instrumentation contact only two conductors, two lines both power lines, but also a signal line. Two-wire and three-wire (a positive power line, two signal lines, including a total of GND) and four-wire (two positive and negative power lines, two signal lines, including a total of GND) compared lower measurement accuracy. Thermal resistance is the temperature change is converted to a change in resistance of components, usually on the resistance of the signal transmitted to the computer control means or other primary instrument through leads. Installation of industrial thermal resistance at the production site, there is a certain distance between the control room and, therefore thermal resistance leads have greater influence on the measurement results. Digital Smart Transmitter | Smart Transmitter | Hua Hui science and technology provided by the Jinan-Technology Co., Ltd. Jinan Huahui Technology Co., Ltd. (www.cnhuahui.com/) strong, credible, in Jinan, Shandong pressure instrumentation industry has accumulated a large number of loyal customers. The company better work attitude and constantly improving innovative ideas will lead China-Technology into the brilliant and you work for a better future!