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If the pressure gauge is abnormal, first check whether there is a broken circuit in the line of the pressure gauge, or whether there is a blockage at the mouth of the pressure gauge?
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Of course, it has something to do with the water pressure, because the greater the water pressure of the remote pressure, the higher the pressure gauge.
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It is related, the longer the distance, the greater the pressure loss.
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The pressure water meter is definitely related to the pressure of the water, because if the pressure is too great, the pressure water meter may be his, and it is said that if you stand too high, this is the best.
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Is there a size between the remote pressure gauge and the water pressure gauge? The pressure gauge has nothing to do with the size of the water conservancy, there is no relationship between them. The remote pressure gauge is the remote transmission.
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OK. The remote pressure gauge is divided into output resistance signal, current signal and voltage signal, and their respective control systems are different. In the past, the constant pressure water supply system was commonly used to resist remote pressure gauges.
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The remote pressure gauge should have a certain relationship with the water pressure, so this should be necessary to control a certain pressure, otherwise they will not be able to use it if the pressure is not enough.
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Of course, it matters, only the greater the pressure of the water, the more pressure the water pressure of the remote transmission.
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It will have a certain relationship with the amount of water pressure, generally speaking, there will still be too much pressure or too little, and his reaction is different.
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The remote pressure BAI force gauge is suitable for measuring the pressure of liquids, vapors and gases that do not corrode steel and copper alloys.
A slip wire resistive transmitter is set inside the instrument, which can transmit the measured value to the secondary instrument far away from the measurement point with the electric value, so as to realize centralized detection and remote control, and the instrument can also indicate the pressure on the spot, so as to facilitate on-site process inspection.
The instrument consists of a spring tube pressure gauge and a slip wire resistive transmitter.
The principle of action of the mechanical part of the remote pressure gauge is the same as that of the general spring tube pressure gauge.
Because the resistance transmitter is arranged on the gear transmission mechanism, when the sector gear shaft in the gear transmission mechanism produces deflection, the rotating arm (brush) of the resistance transmitter can also be deflected accordingly, because the brush slides on the resistor, the change of the measured pressure value is transformed into the change of the resistance value, and is transmitted to the secondary instrument, indicating a corresponding reading value. At the same time, the primary gauge also indicates the corresponding pressure value.
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In this case, it should not have anything to do with it, and in this case, it is likely to have something to do with his power, so it should not have anything to do with it in this regard.
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I feel that there is a certain relationship with the amount of water pressure, the pressure is high and the pressure is small, and there are some changes to the front.
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Is there a relationship between the remote pressure gauge and the water pressure? Who does this have to do with it? If there is a corresponding connection, then there must be a certain relationship between them.
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Is there any difference between a pressure gauge and the same size as water? There is definitely a difference. These two.
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Does the Yuan Chuan pressure gauge have anything to do with the size of the water pressure, I think this Yuan Chuan pressure gauge has nothing to do with the water pressure.
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This is a bit related, depending on what kind of liquid it is.
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Pressure gauge. It is suitable for measuring the pressure of liquid, vapor and gas and other media that are not dangerous, non-crystallizing, non-solidifying and do not corrogate steel alloys. The equipment used to measure the pressure of the medium, the pressure gauge is to measure the pressure through elastic sensitive elements such as spring tubes.
With industrial automation.
Due to the popularity of the process and the need for process control processes, pressure gauges are increasingly used in industrial production.
The quality of the pressure gauge determines its performance and use results, so how to judge the worst of a pressure gauge?
1. The dial of the dial pressure gauge is the part to be observed when judging the quality, the numbers on the dial of the pressure gauge should be clear, complete and easy to identify, the scale should be evenly distributed, and the center angle should be 270°. A reasonable distance should be maintained between the pressure gauge pointer and the plane of the index plate, generally about 1-3mm.
2. The elastic and abrasive sensitive elements of the pressure gauge, such as the spring tube, are the most important components in the pressure gauge, which determines whether the measurement performance of the pressure gauge can meet the needs of use. The spring tube of the pressure gauge must be elastic enough to meet the requirements of the measurement, if the elastic sensing element is too small, it will affect the accuracy level of the pressure gauge.
3. There is generally a certain error in the measurement results of the display value pressure gauge, which is the situation that every pressure gauge will exist, but the display value of the pressure gauge cannot exceed the allowable error. If the indication of the pressure gauge exceeds the allowable range, the adjusting screw should be adjusted, and if the pressure gauge cannot be adjusted, it can only be judged as unqualified quality.
4. The shell of the pressure gauge is firm and reliable, and the sealed pressure gauge shell should be leak-free. The shell of the pressure gauge should be designed with safety holes, and the safety control should be set with dust-proof settings to protect the internal components from corrosion or pollution, especially the diaphragm pressure gauge and other pressure gauges used for corrosion or other complex ring collision environments, and pay more attention to the quality of the shell.
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Measure the resistance between the three wires in pairs, and find the two wires with the largest resistance, that is, one for the high end and one for the low end. Connect one of these two wires to +5V, one to GND, and the other to IN.
Observe the pressure display value of the controller and the gauge.
If the display values are consistent, if not, the two display values are exactly the sum of the ranges, then the high and low terminals are reversed, swap the connection between +5V and GND, and then fine-tune the volume to make the two values consistent.
Remote transmission pressure gauge wiring method:
1. Determine the pressure sensor.
Measuring range and output range.
2. Measure the output signal (voltage or current) at the output end of the sensor.
3. Convert the output signal into a pressure value.
4. Check whether the converted pressure value is consistent with the display table, and the inconsistency may be that the range of the display meter does not correspond to the range of the sensor.
5. Because a sliding wire resistive transmitter is set inside the remote pressure gauge, the measured value can be transmitted to the secondary instrument far away from the measurement with electricity, so as to realize centralized detection and remote control.
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Summary. The remote pressure gauge is broken, which will affect the stability of the water pressure. If the pressure gauge is broken, it will not accurately reflect the change of water pressure, and it will not be able to respond to the change of water pressure in time, thus affecting the stability of water pressure.
The remote pressure gauge is broken, which will affect the stability of the water pressure. If the pressure gauge is broken, it will not be able to accurately reflect the change of water pressure of the key, and it will not be able to respond to the change of water pressure in time, which will affect the stability of water pressure.
Is there a workaround.
1.Replace the pressure gauge: replace the original pressure gauge with a new one; 2.
Maintenance of pressure gauge: send the original pressure gauge to a professional institution for maintenance of the hole bend; 3.Check the water source:
Check that the water source is stable, and if not, take steps to improve it; 4.Check the waterway: check whether the waterway has leakage, and if so, repair it in time; 5.
Turn on the automatic water replenishment system: turn on the automatic water replenishment system, which can make the water pressure and orange trembling stable; 6.Retrofitting of pressure reducing valves:
The installation of a pressure reducing valve can adjust the water pressure to keep the water pressure stable.
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1.Variable frequency motor is used to achieve constant pressure water supply. The variable frequency constant pressure water supply system takes the water pressure of the pipe network (i.e., the reading of the remote pressure gauge) as the set parameter, and controls the output frequency of the inverter through the microcomputer to automatically adjust the speed of the pump motor, so as to realize the closed-loop adjustment of the water pressure of the pipe network (PID), so that the water supply system is automatically stable at the set pressure value
That is, when the water consumption increases, the frequency increases, the pump speed accelerates, and the water supply increases accordingly; When the water consumption is reduced, the frequency is reduced, the speed of the pump is slowed down, and the water supply is also reduced accordingly, so as to ensure the water supply efficiency The user's requirements for water pressure and water volume are guaranteed, and the purpose of improving the quality and efficiency of water supply is achieved. The use of this equipment does not need to build a high-level water tank, water tower, water quality without secondary pollution, is an ideal modern building water supply equipment.
2.Constant pressure water supply is achieved with a regulating valve. The constant pressure water supply system takes the water pressure of the pipe network (i.e., the reading of the remote pressure gauge) as the set parameter, and controls the opening of the pump outlet valve through the microcomputer, so as to realize the closed-loop adjustment (PID) of the water pressure of the pipe network, so that the water supply system is automatically stable at the set pressure value
That is, when the water consumption increases, the valve opening increases, and the water supply increases accordingly; When the water consumption is reduced, the valve opening is reduced, and the water supply is also reduced accordingly, so as to ensure the water supply efficiency user requirements for water pressure and water volume, and at the same time achieve the purpose of improving the quality and efficiency of water supply, "how much water is used, how much water is supplied".
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What inverter do you use, and does it have a PID control function? If there is, use its PID function to set a given port and a feedback port, the potentiometer is connected to the given port, and the remote pressure gauge is connected to the feedback port.
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It must be an inverter with a PID regulator connected to the feedback loop. By setting the pressure value and PID parameters on the inverter, the system pressure can be adjusted automatically.
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The inverter is adjusted to "Advanced Parameters", and the corresponding parameters are set in the PID function, such as: setting channel, feedback channel, control structure, pressure gauge range, upper and lower limit values, etc. Operate and stop with keypad control or external terminal control, and adjust the pressure with a panel potentiometer.
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Please wire according to the requirements of the manual.
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Although the remote pressure gauge is not very common in our lives, but the role of the remote pressure gauge is irreplaceable, it is mainly by measuring the pressure of various metal liquids, steam or other gas media, to see if the pressure is within the scope of our use, and then according to the required pressure to debug, to achieve the purpose of use, then, how to adjust the pressure of the remote pressure gauge, I believe that many people have not been exposed to it are not very good at using, now I will introduce to you the pressure regulation method of the remote pressure gauge.
How to regulate the pressure of the remote pressure gauge
Pressure gauge is no stranger to us, knowing that pressure gauge is a common one in the field of industrial process and scientific research, which is used to display the pressure change of each process link to monitor the safety movement of the production and operation process.
1. Install the pressure gauge on the pressure calibrator, and connect the variable resistor attached to the gauge to the ohm file of the ohmmeter or multimeter. Then, the pressure indication value of the pressure gauge is verified in the forward (pressurization) and reverse (pressure-down) directions, and the indication error should meet the requirements of the verification regulations. While verifying the pressure indication value, observe the change of the variable resistance value on the ohmmeter or multimeter ohmic file.
When observing, it is necessary to pay attention to the output of the resistance value before it can be read (this is the same as the requirements of JJG52-1999 on the reading of the signal error of the pressure gauge signal of the live contact signal device in principle). The change in resistance, like the change in the pressure indication, should be linear, and attention should be paid to its continuity. At the upper and lower limits of the pressure indication value, attention should be paid to whether the variable resistor is within the effective working range, otherwise it needs to be adjusted by changing the contact piece.
2. Check whether the conductivity between the moving contact of the variable resistor and the winding resistor is good, because it is directly related to the function of the connected line. First, check the contact pressure between the moving contact and the winding resistor, which should not be too small, that is, the two should not be too loose, if the contact is too loose, it should be adjusted by changing the shape of the moving contact. Then check the contact pressure between the moving contact and the winding resistance, it should not be too large, that is, the two can not contact too tightly, if the contact is too tight, cotton fiber dipped in alcohol can be used to clean the electrical contact layer of the moving contact.
In addition, increasing the contact pressure can also reduce the contact resistance.
3. The geometry and raw material properties of the variable resistor moving contact attached to the fan-shaped wheel of the remote pressure gauge should meet the requirements for easy adjustment. Otherwise, on the one hand, it affects the conductivity between it and the winding resistor; On the other hand, it is easy to make the moving contact slide out of the effective working range of the winding resistor, which causes the disconnection of the line connected to the variable resistor.
The remote pressure gauge has played a great role in the realization of many pressure control conditions in industrial processes and many scientific research and experimental conditions, of course, its technical requirements and accuracy requirements are standardized, and the operation is not very difficult. It mainly dissects its pressure regulation process into three steps, hoping to help readers who need to operate, these operation processes themselves are not difficult, but the process is more cumbersome, consumers should be cautious in the process of learning.
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The reasons for the slow pressure recovery of the remote pressure gauge when the water is discharged may be:
1. The capacity of the water tank is insufficient, when the water is discharged, the capacity of the water tank is not enough to clean the dust, the water level is reduced, and the pressure recovery is slow;
2. The output power of the pump is insufficient, when the water is discharged, the output power of the pump is insufficient, the water flow is insufficient, and the pressure recovery is slow;
3. The diameter of the water pipe is too small, when the water is discharged, the diameter of the water pipe is too small, the water flow is insufficient, and the pressure recovery is slow;
4. The resistance of the water pipe is too large, when the water is discharged, the resistance of the water pipe is too large, the water flow is insufficient, and the pressure recovery is slow;
5. There is stagnant water in the water pipe, when the water is discharged, there is stagnant water in the water pipe, the water flow is insufficient, and the recovery of the positive differential force is slow;
6. The water pump is damaged, when the water is discharged, the water pump is damaged, the water flow is insufficient, and the pressure recovery is slow;
7. Improper control of the water pump, when the water is discharged, the pump is not properly controlled, the water flow is insufficient, and the pressure recovery is slow;
8. Improper installation of the water pump, when the water is discharged, the water pump is improperly installed, the water flow is insufficient, and the pressure recovery is slow;
9. The water pump pipeline interface leaks, when the water is discharged, the water pump pipeline interface leaks, the water flow is insufficient, and the pressure recovery is slow;
10. There is a blockage in the water pipe, when the water is discharged, there is a blockage in the water pipe, the water flow is insufficient, and the pressure recovery is slow.
In addition, it is also possible that the pump is running unsteadily, which can lead to insufficient water flow, resulting in slow pressure recovery. In addition, the pump may be overloaded or underloaded, which can also lead to slow pressure recovery.
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