ask:
What are the special features of the dredge marine encoders compared to ordinary grade encoders?
answer:
The encoder for offshore dredging ships is used to control the positioning of the crank arm of the dredging device on the deck, which is different from that in the under-deck and in the control room, but it is exposed to the sea wind salt, water vapor, and high temperature continuous operation environment for a long time. Below, so the standard for the use environment of this encoder is high:
First, the corrosion resistance of the shell material against salt and sea breezes. The shell of the encoder with absolute number 9600 is an all-metal aluminum alloy that has undergone a special surface oxidation treatment.
Second, the encoder's shell package. Code number 9600 is an absolute value multi-turn encoder housing package. It is an all-metal, screwless, one-time fastening and hermetic packaging technology. This technology can hardly consider the convenience of maintenance. It is generally used in encoders with high return rate. Do not dare to use. The reason why no screws are required, because the screw material is generally different from the aluminum shell, in the sea during the daytime temperature temperature difference at night, under the temperature difference due to thermal expansion and contraction, the sealing properties of different material screws can no longer be guaranteed. The sea breezes are rich in salt, and these salts are very permeable (commonly known as "salt creeps"). The ions in the salts are very damaging to electrical corrosion and can quickly damage the internal electrical components of the encoder and fail.
Third, continuous high-temperature operation, high daytime temperatures in the South China Sea region, continuous operation at high temperatures, not only the high temperature rating of the product, but also the screening and quality management of each internal part, There are high demands. Code number 9600 multi-turn absolute encoder, the product in the detection phase, it must pass through the high temperature oven at 80 degrees for four consecutive hours of power signal detection.
Fourth, maintenance inconvenience away from the mainland. This requires that the encoder must be absolute coded for the full stroke and that there is no error in long-term use. And in this relatively harsh working environment, the high temperature continuous operation, the failure rate must be extremely low, and, in the event of signal problems, the ship's staff must be able to simply find and eliminate problems. Code 9600 absolute multi-turn encoder provides a set of 4-20mA signal output and a set of RS485 signal output, 4-20mA signal can be detected by the ship's electrician with a multimeter, and RS485 signal can be used as Remote transmission to the control room monitoring, pre-judging the encoder in advance is working properly.
The code number 9600's absolute multi-turn encoder was first used 6 years ago for dredgers at Shanghai Yangshan Port. It was used for positioning control of dredging booms on the deck. After years of use, it was virtually trouble-free. return. For this reason, dredgers belonging to the China Railway Bureau ordered the 9600 absolute multi-turn encoder several times. In a recent order, customers revealed the application of dredgers in the South China Sea. We are proud that Chinese industrial control people can use China's manufacturing of industrial control products to build a force for the South China Sea!
Slide Switches
The Slide Switches is used to switch the circuit by turning the switch handle to turn the circuit on or off. It is different from our other serious switches, for example, Metal Switches, Automotive Switches, LED Light Switches, Push Button Switches, Micro Switches, The commonly used varieties of Miniature Slide Switches are single pole double position, single pole three position, double pole double position and bipolar three position. It is generally used for low voltage circuits, featuring flexible slider action, stable and reliable performance. Mainly used in a wide range of instruments, fax machines, audio equipment, medical equipment, beauty equipment, and other electronic products.
The Mini Slide Switches are divided into: low-current slide switches (right), and high-current slide switches (left). Small current slide switches are commonly used in electronic toys, digital communications. High current is generally used in electrical appliances, machinery, etc.
It can divided into 4 types modals, respectively are:
1. High-current sealed switch
Its rated current is as high as 5A, and it is sealed with epoxy resin. It is a large current sealed switch. It has a variety of terminal forms, contact materials are silver, gold, switching functions. Therefore, there are many types of subdivisions. Widely used in electrical appliances and machinery
2. Single sided snap-on surface mount type slide switch
The actuator is operated on the side and the pins are patch-type, so it is a unilateral spring-back surface mount type slide switch. Widely used in communications, digital audio and video
3.4P3T in-line slide switch
The contact form is 4P3T and the pin is in-line. It is 4P3T in-line slide switch. 4P3T determines that it has 8 pairs of pins. At the same time, there are two pairs of brackets that support, fix, and ground. Widely used in building automation, electronic products
4.Long actuator jacking type slide switch
Actuator 12mm, and located at the top of the switch, it is a long actuator jacking type slide switch. Widely used in digital audio and video, various instruments / instrumentation equipment
Slide Switches,Micro Slide Switch,2 Position Slide Switch,Momentary Slide Switch
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