Process steps and precautions for assembling the transducer

The person who assembles the transducer must operate in strict accordance with the following process

A: Familiar with the structure of the transducer 2: The floor must be dragged once a day in the assembly room, smoking is strictly prohibited, and the cleaning of the assembly room is guaranteed. 3: Ceramic sheets, copper sheets are lightly ground with 360# metallographic sand, the purpose is to remove the ceramic sheets. Glitch and measurement of the flatness of the ceramic sheet 4: The two faces of the transducer assembly and the rear platen must be ground to the mirror surface. First sanding with sand and then using 360# metallographic sanding to the mirror with a knife ruler 30-45 °C measuring the entire plane without seeing is qualified five: mark on the periphery of the ceramic sheet + number six: electric and copper inner diameter first brush insulation Note that the electrode plane cannot be oiled (pre-made)
Seven: electrode sheet, ceramic sheet, transducer contact surface, the back cover must be cleaned with acetone before 2-3 sides to the paper with acetone to wipe the invisible black. Eight: in order to install the electrode, ceramic The film, gland, and hand holding device must take the outer circle nine: Φ50, the pressure of the two-piece transducer is generally 220KG, the four-piece is generally 260KG, the electrode must be short-circuited when pressing, pay attention to the ceramic piece of the pressure block and The verticality of the transducer assembly, pay attention to the screw length when the screw is turned to the end, the remaining 1mm. Outside the screw, it is necessary to cover 2-3 layers of 0.3mm out of print. Pay attention to the verticality of the outer circle in the ceramic sheet. Ten: Test: Two-piece transducer, absolute resistance = 500. The impedance should be below 10 ohms, the Φ value is above 2000, the impedance of the four-piece package should be less than 5 ohms, and the Φ value should be 1500 or more. (Note that the impedance parameters vary slightly with the thickness of the ceramic piece)
Eleven: All transducers are assembled and tested in an oven at 90 ° C for 2-3 hours. Before the oven is shorted to the oven for 3 hours, the surface of the ceramic sheet is insulated when the temperature is lowered to 60-70 ° C. Brush the 702 gel silicone gel at the screw gap: before the transducer is aging, enter the warehouse. Each transducer must have a stamp code to record the fine data harmonic frequency, anti-shock frequency, impedance, θ value, capacitance thirteen: the link between the transducer and the horn: connect the two sides with water sand. Metallographic sanding flat (light) is cleaned with acetone and the parameters are checked to correct the parameters and the position of the node. The position of the node is tightened with a frequency of less than 50H2.

Bedside hand grip

FALL PREVENTION & MOBILITY INDEPENDENCE - Bedside hand grip to help you get in and out of bed safely. Allow disabled individuals or anyone with physical limitations or injuries to get out of bed unassisted or perform their daily tasks (e.g. eating, reading, working) without having to get off their beds.Bed Assist Rail Handle can be placed on either side of the bed.
Bed rail assist handle support legs SAFE & DURABLE - Heavy-duty powder-coated steel provides a strong
SLIP-RESISTANT FOAM PADS - Slip resistant handle, foam padding, horizontal stabilizer bars and floor standing legs work to provide increased stability for user

MODERN DESIGN UNIVERSAL BED RAIL - Adjustable bed rail height and width allows product to fit onto any sized beds (twin, full, double, queen, king) and on either side of the bed (right or left). Modern bed rail design will blend in nicely in any bedroom.