Before selecting a Rosemount transmitter, it is necessary to consider whether it is a threaded device or a flanged device, and the flanged device is divided into a single flange device and a double flange device. In order to let you better choose the flange, we have summarized some knowledge about the flange type:
Threaded Flange:
1. A kind of threaded flange has a low nominal pressure, which is generally used in galvanized steel pipes and other occasions that are not suitable for welding, and pipes with repeated temperature fluctuations or pipes higher than 260 °C and lower than -45 °C are also not suitable for use.
2. For high-pressure working conditions, the two pipe ends with external threads and processed into a certain shape sealing surface are sealed with lens pads.
Flat welded flange:
1. Plate flat welding flange, this flange has poor rigidity, and it is easy to cause flange surface deformation during welding, and even the flange will be deformed under the action of bolt force, causing leakage due to the angle of the sealing surface, so it is generally used for pipelines with low pressure and temperature, and relatively less important, and is generally only suitable for water, low-pressure steam and air pipelines with PN≤1.0MPa in the petrochemical industry.
2. Slip-on Flange: The short neck of this flange greatly improves the stiffness of the flange and its bearing capacity.
The deployment of Rosemount transmitter and flange, on the one hand, should be based on the needs of measurement, on the other hand, the requirements of the pipeline process, not only according to the actual needs, but also in accordance with the rules of the selection table, only in this way, can a transmitter that meets the requirements be selected.
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Eight ways to maintain your Rosemount 3051 pressure transmitter
1. When measuring steam or other high-temperature media, it is necessary to connect a condenser such as a buffer tube (coil), and the working temperature of the Rosemount transmitter should not exceed the limit.
2. When wiring, pass the cable through the waterproof joint or winding pipe and tighten the sealing nut to prevent rain from leaking through the cable.
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The meaning of the Rosemount transmitter fault code indication
Press Limit: The process variable read out by the transmitter is not within the transmitter range, which means that the range of the set volume exceeds the range of the transmitter cassette, and the solution is to replace the transmitter cassette.
Temp Limit: ...
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A summary of methods for on-site inspection of Rosemount transmitter failures
When something goes wrong with the Rosemount transmitter, you can first use the common methods of on-site inspection to check it, such as: query method: recall the ignition, smoke, odor, power supply change, lightning strike, wetting, misoperation, and mismaintenance before the fault occurs; Intuitive method: investigate external damage to the circuit, leakage of the impulse pipe, ...
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The Rosemount 3051 transmitter resets the range
There are three ways to reset the range of the 3051 transmitter:
1. Use only the communicator to reset the range
HART communicator shortcut keys 4 or 5. The simplest and most common way to reset the range using only the communicator is to change the values that mimic points 4 and 20 mA independently, without the need for pressure inputs.
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Features of the Rosemount 8732E Electromagnetic Flowmeter:
Features of the Rosemount 8732E Electromagnetic Flowmeter
1. The measurement is not affected by the changes in fluid density, viscosity, temperature, pressure and conductivity.
2. There are no blocking moving parts in the measuring pipe, no pressure loss, and the requirements for the straight pipe section are low. It has unique adaptability to slurry measurement.
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Rosemount 3051 transmitter mounting
What are the factors that affect the functionality of the Rosemount 3051 differential pressure transmitter? What are the factors that affect the functionality of the Rosemount 3051 differential pressure transmitter? Unique to Rosemount, the typical North and South American device method, the head-mounted 3051 transmitter with threaded sensors.
1. Heat ...
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Key Features of the Rosemount 248 Temperature Transmitter:
Top mount and rail mount applications provide 2-year stability.
The integrated LCD meter provides easy indication of the process and diagnostic indications.
Available as a ready-to-install solution, including a wide range of sensors, thermowells, and housings.
Polished stainless steel housing can be applied to ...
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How to maintain the United States rosemount3051 pressure transmitter
Rosemount pressure transmitters often have some common faults in the whole process of accurate measurement, and the immediate judgment and resolution of common faults is especially important for the manufacturing that has been carried out. According to the work experience in the usual maintenance, people have summarized and sorted out some ...
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How to maintain the Rosemount 3051 pressure transmitter
United States rosemount 3051 pressure transmitter maintenance is mainly divided into two points:
1. In the whole process of accurate measurement, some common faults often occur in the Rosemount pressure transmitter, and the immediate judgment and analysis and resolution of common faults are especially important for the production and manufacturing that has been carried out.
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The difference between a Rosemount transmitter and a Siemens transmitter
The difference between Siemens' transmitter and Rosemount's transmitter: Siemens' transmitter is a piezoresistive pressure transmitter, and Rosemount's transmitter is a capacitive pressure transmitter.
The transmitter converts the output signal of the sensor into a signal that can be recognized by the controller.
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Summary of problems in the use of the Rosemount 3051 transmitter
1. What kind of output signal does the Rosemount transmitter need to obtain: mV, V, mA and frequency output digital output, and the choice of what kind of output depends on a variety of factors, including the separation between the Rosemount transmitter and the system controller or display, whether there is "noise" or other electronic interference signals.
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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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What to do if the Rosemount pressure transmitter measurement is inaccurate
Common Rosemount pressure transmitter measurement incorrect situations:
1. The input impedance of the Rosemount transmitter load should be in line with RL≤ (transmitter supply voltage -12V)/(0.02A)Ω if necessary, if it does not match, corresponding measures can be adopted according to its differences: such as increasing the power supply ...
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In 2018, the Rosemount electromagnetic flowmeter received new certification
In 2018, NAMUR passed the technical certification, and the Rosmont 8700 series electromagnetic flowmeters were finally certified by NAMUR, allowing automation products to better enter the European chemical market
The Germany Committee for Measurement and Control Standards "designates NAMUR as a standard, which is based on industrial ...
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Problems encountered during the use of the Rosemount 3051 transmitter
1. What kind of output signal does the Rosemount transmitter need to get: mV, V, mA and frequency output digital output, and the choice of what kind of output depends on a variety of factors, including the separation between the Rosemount transmitter and the system controller or display, whether there is "noise" or other electronic interference signals.
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Rosemount 3051 Pressure/Differential Pressure Transmitter Zero Point Adjustment Method
Rosemount differential pressure transmitter zero point adjustment
Before zeroing, admit that the balancing valve is nearly open, and use a flathead screwdriver to turn the zeroing screw. The clockwise conditioning output increases, the counterclockwise conditioning output decreases, and the zeroing resolution can reach 0.01% of the set range.
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What are the main advantages of Rosemount temperature transmitters?
What are the main advantages of Rosemount temperature transmitters?
1. Only by adapting to harsh environments can it be strong
Rosemount temperature transmitters generally work in a wide range of environments, from extremely cold to extremely hot areas, many of which work in the open air.
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Factors to consider when installing a Rosemount 644 temperature transmitter
Rosemount 644 temperature transmitter must be considered when installing the factors, only we solve these unfavorable factors, in the installation of the Rosemount temperature transmitter will not encounter some unnecessary things
routine
Electrical temperatures such as RTDs and thermocouples ...
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Features that Rosemount Instrument Thermowells have
Rosemount Instrument Heat Jacket has the following features:
1. Similar tags – when presenting some similar applications that only need to be changed slightly, it should be possible to imitate the application value of a specific tag, and then there is no need to re-enter the repetitive information, only change the variables that need to be changed in the new use.
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Rosemount Models 2088, 2090F, and 2090P Pressure Transmitters Quick Installation Guide
1.Rosemount 2088
Install it directly to the impulse pipe without the need for an additional mounting bracket, or use the optional mounting bracket to mount it directly to a wall, panel, or 2" pipe.
2. Rosemount 2090P
Use of existing welded short casings ...
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