There are many types of Rosemount 3051 transmitters, and there are many types, today we will tell you about the most basic 3 types of transmitters of Rosemount 3051 transmitters, absolute pressure, gauge pressure, and differential pressure.
When the 3051CA absolute pressure transmitter Rosemount reference pressure is vacuum, the measured pressure value is the absolute pressure, which is usually referred to as absolute pressure.
When the reference pressure of the 3051CG gauge pressure transmitter is the local atmospheric pressure, the measured pressure value is the gauge pressure. When the gauge pressure is positive, it is referred to as pressure, and when the gauge pressure is negative, it is called negative pressure or vacuum. As far as the negative pressure of the Rosemount series transmitters is concerned, the higher the positive value, the lower the positive pressure, and the greater the vacuum.
When the 3051CD differential pressure transmitter is operating, the barrier diaphragm and the filling solution on the high and low pressure sides transmit the process pressure to the filling solution, which then transmits the pressure to the sensing diaphragm in the center of the sensor. When the pressure to be measured is felt at both ends of the transmitter, the difference between the pressures at the two ends is called differential pressure.
These are the 3 most basic types of Rosemount 3051 transmitters.
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Rosemount transmitter selection requires a good transmitter before use, so its selection is very important
1. According to the pressure interface mode
Generally, threaded connection is the standard interface method.
2. According to the required accuracy level
Measurement error of the transmitter ...
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1. After adjusting the zero point, use the standard pressure source to apply pressure slowly, and increase the pressure to the maximum scale, and the output value is about 20mA.
2. The verification regulations require that the two high and low pressure chambers of H and L are connected to the outside world, and observe that the zero position is not in the direction of 4mA.
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External factors influencing the failure of the Rosemount 3051 transmitter
1. The impulse tube is faulty
There are two simplest problems with the pressure duct of the Rosemount 3051 transmitter, which is blockage and leakage of the pressure duct. Once this problem is presented, the most obvious manifestation is that the leakage surface index of the impulse pipe will be abnormal.
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How to choose the Rosemount 3051DP differential pressure transmitter
1.3051D transmitter is a coplanar pressure transmitter, which can measure the pressure or the side differential pressure, and there are two options P is the differential pressure measurement and G is the gauge pressure.
2. To understand the range used in the field, select the corresponding code according to the range, a total of 5 options: the lowest - 6.216KPA and the maximum 13789.54KPA.
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How to solve the problem that the Rosemount transmitter cannot be powered on
Analysis and countermeasures when the Rosemount transmitter cannot be powered on.
1. There is something wrong with the leakage circuit breaker itself
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Top mount and rail mount applications provide 2-year stability.
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What factors affect the performance of the Rosemount 3051 differential pressure transmitter?
1. Effect of temperature
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Types of Rosemount transmitters
The intelligent Rosemount transmitter is also equipped with a hand-held terminal (external data setter or grouper) for setting the transmitter parameters, such as setting the type of transmitter, range adjustment, zero point adjustment, input signal selection, output signal selection, engineering unit selection and damping time constant.
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How to troubleshoot the Rosemount 3051 differential pressure transmitter if it encounters problems
1. Line failure
When the computer in the Rosemount transmitter monitoring system shows abnormal values, it is necessary to immediately check the line status of the junction box of the differential pressure transmitter to see if there is a short circuit, etc., and the way to check is to measure the resistance.
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1. The pressure of the 3051 transmitter does not go up to the output of the transmitter, the output of the pressurized transmitter does not change, and the output of the pressure transmitter changes suddenly, and the zero position of the pressure relief transmitter cannot be returned.
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