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Views: 20 Author: Site Editor Publish Time: 2021-08-09 Origin: Site
3051 pressure transmitter error code display and debugging, let's talk about the menu content first, 3051 pressure transmitter liquid crystal meter displays abbreviated operation, error and warning information to facilitate the troubleshooting of the transmitter. The display order of the information is arranged according to its priority, and the information of normal operation is displayed at the end. In order to determine the reason for the displayed information, the HART communication device is used to further inquire the transmitter. Let's tell you what the letters on the LCD display mean.
Fault | Corrective Action |
Transmitter milliamp reading is zero | Check whether the signal terminal is connected to the power supply Check whether the polarity of the power cord is reversed Verify that the terminal voltage is between 10.5 and 42.4 V dc Check if the open diode crosses the test terminal |
The transmitter cannot communicate with the HART communication device | Verify that the output is between 4 and 20 mA or is at a saturation level Verify that the transmitter's DC power supply is clean (the maximum AC noise between peak and peak is 0.2 volts) Check the loop resistance, the minimum is 250 ohms (power supply voltage-transmitter voltage / loop current) Check if the unit address is correct |
Transmitter mA reading is high or low | Test the pressure applied Check 4 and 20 mA range points Check that the output is not in alarm state Verify that 4-20 mA output fine adjustment is required |
The transmitter does not respond to changes in the applied pressure | Check test equipment Check whether the impulse line or valve block is blocked Verify that the applied pressure is between the 4 and 20 mA set points Check that the output is not in alarm state Verify that the transmitter is not in loop test mode |
Digital pressure variable reading low or high | Check the test equipment (inspection accuracy) Check whether the impulse pipeline is blocked or the lower part of the wet section is blocked by filling Verify that the transmitter is calibrated correctly Check the measurement pressure calculation |
Digital pressure variable reading is unstable | Check the measuring system to determine whether the pressure line has faulty equipment Verify that the transmitter cannot directly respond to the on/off of the device Verify that the measurement damping is set correctly |
Unstable milliampere readings | Verify that the power supply of the transmitter has sufficient voltage and current Check for external electrical interference Verify that the transmitter is properly grounded Verify that the shield of the twisted pair is grounded at only one end |
