Problem Phenomenon Check and test Solution 1: No output from the transmitter 1: Check whether the transmitter power supply is reversed; Connect the power supply to the correct polarity 2: Measure the power supply of the transmitter, whether there is 24V DC voltage; Must ensure the supply The transmitter's power supply voltage ≥12V (ie, the transmitter power supply input voltage ≥12V). If there is no power, you should check whether the circuit is broken, whether the instrument is selected wrong (input impedance should be ≤ 250Ω); and so on. 3: If it is with a header, check whether the header is damaged (you can short the first two lines of the header, if the short circuit is normal, then it is a header damage); header damage is required to replace the header, 4: Connect the ammeter to the 24V power supply circuit and check if the current is normal. If it is normal, the transmitter is normal. At this time, check whether other instruments in the circuit are normal. 5: The power supply is connected to the transmitter power input; connect the power cable to the power terminal. 2: Transmitter output ≥20mA 1: If the power supply of the transmitter is less than 12VDC, you should check whether there is a large load in the loop. The input impedance of the transmitter load should meet RL ≤ (transmitter supply voltage - 12V )/( 0.02A) Ω 2: The actual pressure exceeds the selected range of the pressure transmitter; Reselect the appropriate range of pressure transmitters. 3: The pressure sensor (Sensor) is damaged, severe overload can sometimes damage the isolation diaphragm. Need to send back to the manufacturer for repair. 4: Whether the wiring is loose; Connect the cable and tighten 5: The power line wiring is correct The power cable should be connected to the corresponding terminal 3: Transmitter output ≤ 4mAOutput ≤ 4mA 1: Transmitter power is normal If less than 12VDC, You should check whether there is a large load in the loop, the input impedance of the transmitter load should meet RL ≤ (transmitter supply voltage -12V) / (0.02A) Ω 2: The actual pressure exceeds the pressure transmitter selected Range; Re-select the pressure transmitter of the appropriate range (Pressure Transducer) is damaged, severe overload can sometimes damage the diaphragm. Need to send back to the manufacturer for repair. 4: Incorrect pressure indication Wrong indication 1: If the power supply of the transmitter is less than 12VDC, check whether there is a large load in the loop. The input impedance of the transmitter load should meet RL ≤ (transmitter power supply voltage - 12V )/( 0.02A) Ω 2: The reference pressure value is correct. If the accuracy of the reference pressure gauge is low, a more accurate pressure gauge must be replaced. 3: The range of the pressure indicating instrument is the same as that of the pressure transmitter. The range of the pressure indicating instrument must be the same as the range of the pressure transmitter 4: The input of the pressure indicating instrument and the corresponding wiring are correct. The pressure indicates the input of the instrument is 4 ~20mA, then the transmitter output signal can be directly connected; if the pressure indicator instrument input is 1 ~ 5V, then the pressure indicator must be connected to the input of a precision of one thousandth or more, resistance value 250Ω resistance, then connect to the transmitter input. 5: The input impedance of the transmitter load should meet the RL ≤ (transmitter supply voltage -12V) / (0.02A) Ω If not, according to its different can take appropriate measures: such as increasing the supply voltage (but must be lower 36VDC), Reducing load, etc. 6: If the multi-point paper recorder is not recording, whether the input end is open circuit; if it is open, then: 1. It can no longer carry other load; 2. Use other recorders with input impedance ≤ 250Ω when not recording. 7: The corresponding equipment enclosure is grounded. Equipment enclosure is grounded. 8: Is it separated from AC power supply and other power supply? Separate from AC power supply and other power supply. 9 Check whether the pressure sensor is damaged or not. Severe overload can sometimes damage the isolation diaphragm. Need to send back to the manufacturer for repair. 10: Is there any sand, foreign matter, etc. in the pipeline that will block the pipeline and impurities will affect the measurement accuracy? The impurities need to be cleaned and a strainer should be added in front of the pressure interface. 11: The temperature of the pipeline is too high, the use temperature of the pressure sensor is -25 ~ 85 °C, but the actual use is best within -20 ~ 70 °C. Add buffer tube to dissipate heat. Before use, it is best to add some cold water in the buffer tube to prevent the superheated steam from directly hitting the sensor, thereby damaging the sensor or reducing the service life.
Spiral Ribbon Mixer
The spiral ribbon mixer comprises of U-shape container, transmission parts and ribbon agitating blades which usually have double or triple layers with outside screw gathering the material from sides to center and inside screw transmitting the material from center to sides to form convection mix. It is a very good mixer in mixing viscosity and cohesion powder. It can also mix powder which needs to put liquid.
Spiral Ribbon Mixer, Spiral Ribbon Mixer Machine, Spiral Ribbon Blender, Spiral Ribbon Blending Machine
Jiangyin Jirui Machinery Manufacturing Co,LTD , https://www.jyjiruimachine.com