Imitation
reactive printing with pigment on various cotton or polyester fabrics.
Printed fabric surface is
smooth and soft, not sticky; good color fastness, good cost performance, does
not contain APEO, low formaldehyde emission.
Pigment
printing on cellulose fibers and their blends.
Binders,Printing Binder,Formaldehyde-Free Printing Binder,Low-Formaldehyde Pigment Printing Binder,Pigment Printing Binder Dymatic Chemicals, Inc. , https://www.dymachem.com
It can be used to measure the absolute vibration of a bearing housing, housing or structure with respect to free space. Its output voltage is proportional to the vibration speed, so it is also called a speed-type vibration sensor. The output can be the magnitude of the speed value, or it can be converted into the displacement signal output after the integral of the speed. This measurement can be used to evaluate the overall operating conditions of rotating or reciprocating mechanisms.
Most of the most common mechanical vibration problems stem from the rotor. Such as imbalance, misalignment, friction, etc. However, for some machines, the vibration of the shaft is almost completely transmitted to the bearing shell. In this case, the vibration of the bearing shell (measured using a speed sensor mounted on the housing) can be measured and provided for the comprehensive work of the machine. Meaningful information. These machines include: machines with rolling bearings and machines with oil film sliding bearings.
For most machines, for vibration measurements, it is best to use an eddy current sensor that can directly detect the actual vibration of the shaft in a non-contact manner. However, due to various reasons (installation restrictions and environmental factors, etc.), it is inconvenient to install eddy current sensors. For such machines, if the vibration of the shaft is transmitted to the bearing shell, the mechanical vibration can be adopted. A speed sensor mounted on the bearing performs the measurement.
When designing explosion-proof vibration velocity sensors, full consideration was given to the purpose of exploding explosive mixtures when the explosive mixture intrudes into its interior and explodes for some reason, from the strength of the shell and the gap between the components of the shell. , Length, and other critical conditions that limit the maximum surface temperature of the enclosure, to ensure flameproof performance.
The external grounding of the explosion-proof vibration velocity sensor is an important measure to ensure its safe operation. The sensor and the object to be measured are firmly connected through the stainless steel mounting screw and reliably grounded.
It is an inertial sensor that uses the principle of magnetic induction to convert vibration signals into electrical signals. It is mainly composed of magnetic circuit system, inertial mass, spring damping and other parts. A magnet is rigidly fixed in the sensor, and the inertial mass (coil assembly) is suspended by a spring element. When working, the sensor is installed on the machine. When the machine vibrates, the coil and the magnet relatively move within the working frequency range of the sensor and cut the magnetic force line to generate an induced voltage in the coil. The voltage value is proportional to the vibration speed value. Match with the secondary instrument, you can display the vibration speed or displacement size.
XHVSG-2EX-A30-B01-C02-D02 explosion-proof vibration speed sensor