Answer: Check whether the pipeline parameters are set correctly, the installation method is correct, whether the connection lines are in good contact, whether the mixture is fully applied, whether the pipeline is filled with fluid, and whether the probe is installed according to the installation distance displayed by the machine. Whether the installation direction of the probe is wrong.
Question: The pipeline is old, the inside wall of the pipeline is heavily fouled, and when the signal is not received or the signal is too weak during measurement, what should I do?
A: 1. Confirm that the pipeline is full of fluid.
2. The probe should be installed with the Z method (if the pipe is too close to the wall, the probe can be installed on the diameter of the pipe with an angle of inclination, but not necessarily on a horizontal pipe diameter);
3. Carefully select the dense part of the pipe and polish it thoroughly, apply a sufficient amount of chelating agent to install the probe;
4. Carefully and carefully move each probe near the mounting point to find the maximum signal point to prevent the ultrasonic beam from reflecting the expected area due to fouling of the inner wall of the pipe or due to local deformation of the pipe and miss the possibility of receiving a stronger signal. Installation point
5. Metal pipes with serious fouling of the inner wall can be used to make the scaling parts fall off or cracks. (Note: This method sometimes does not help the transmission of ultrasonic wave due to the gap between the scaling and the inner wall.)
Q: Why does the current loop have no output current?
A: Open the machine panel and check the hardware circuit settings. The short circuit near terminal 22 is set to the position 1-2, and the current output mode can be output directly. (2-3 position setting current loop output is required for external power supply. ).
Q: How does the current loop output current value appear to be wrong?
Answer: 1. Check the M55 window, whether the required current output mode is set;
2. Check whether the upper and lower limits of the current set by the M56, M57 window are appropriate.
3. Recalibrate the current loop and verify with M49.
Q: Obviously, there is flow in the pipeline, and the machine also shows “*R†status. At this time, the instantaneous flow rate displayed by the machine is zero. What is the problem?
A: Is “Static Zero Setting†used in the case of fluid flow (refer to M42 description). If yes, use M43 to restore the factory default zero setting.
Q: My unit's measurement site is harsh and the power supply voltage fluctuates greatly. I am concerned that the machine can work continuously for 24 years a day for several years?
A: The JC100 flowmeter is designed to work reliably under such conditions. Its internal use of intelligent signal processing circuits and algorithms, can adapt to strong interference occasions, and can adapt to changes in the strength of ultrasonic signals; its requirements for AC power supply voltage is 140V ~ 280V. The DC power supply voltage requirement is 8V~36V. So far, JC100 series flowmeters have not been placed or used due to instrument failure.
Q: The signal strength of the new flowmeter seems to be “smallâ€. Does it affect the measurement?
A: Compared with the fifth version of the flowmeter, it is "small"! This is only a superficial phenomenon because this value is a relative value. Never affect the measurement. Actually, you will find that the new Q value is high, the indication is very stable, and the measurement is more accurate.
Ball bearings consist of a series of round balls in a casing, within an inner and outer ring capable of supporting both radial and axial (thrust) loads. Ball bearings come in both single and double row configurations, in both metric and inch sizes, and can be found in a large range of applications from door hinges to roller skates.
Types of Ball Bearings
There are a number of different types of ball bearings, such as miniature, deep groove, and super precision.
Miniature Ball Bearings are small bearings with bore sizes between 1 and 10 mm or up to half an inch. Bearings Direct offers a number of miniature ball bearings in both metric and inch sizes that meet ABEC7 precision class.
Deep Groove Ball Bearings are incredibly versatile and the most widely used. Due to their low friction, they are capable of high rotational speeds, supporting both radial and axial loads. Bearings Direct offers both in metric and inch sizes , also we stock stainless steel made materials metric and inch sizes
Super Precision Ball Bearings are specifically designed with accuracy in mind for high-speed and precision applications. They are capable of high rotational speeds with low friction and noise.
Precision Angular Contact Ball Bearings carry combined loads, both radial and axial, designed, much like the super precision bearings, for high-speed and high-precision applications.
Double Row Ball Bearings are similar to both precision angular contact and super precision ball bearings in that they can accommodate a combined radial and axial loads. These bearings have two rows of balls inside making them capable of much higher loads. Bearings Direct supplies double row ball bearings that are open and with shielded or sealed closures.
Self-Aligning Ball Bearings are double-row ball bearings that can adapt to both static and dynamic angular misalignment. These bearings are particularly appropriate when shaft and housing alignment is a challenge.
Thrust Ball Bearings are ball bearings that can carry axial loads alone. Bearings Direct supplies thrust ball bearings that are single row, in both miniature and regular three-piece configurations.
Bearings Direct supplies all of these ball bearings and you can browse our inventory and purchase online using the links below.
Ball Bearing,Self-Aligning Ball Bearings,Pressure Ball Bearing,Thin-Walled Bearings
Shijiazhuang Longshu Mechanical & Electrical Equipment Trading Co., Ltd. , https://www.longsbearings.com