Regarding the protection of signal cables between split-type instrument transmitters and probes
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I would like to ask the experienced colleagues: Is it necessary to take protective measures for the signal cable connecting the split-type instrument transmitter and the probe? What is usually done in this case? I am extremely grateful~
This post was last edited by Qiu Gege Bawangzi on 2016-3-3 14:32. Generally speaking, a quality signal cable has a good shielding layer and rubber protection. When using the factory, it is only necessary to pay attention to basic points such as placing the cables properly, ensuring they are not placed in the same slot as the power cords. . . It is also advisable to include a U-turn for the wire before it enters the transmitter and the sensor, in order to prevent water vapor from condensing and seeping into the instruments along the cable.
It’s the signal cable between the separate instruments. It’s usually exposed outside – is any additional protection needed?
It’s not visible at the moment; if you’re worried, you can cover it with a PVC tube
Generally, it is wound up and tied together, with both ends sealed using glue knots. If conditions permit, snake pipes or flexible tubes can be used, but they are not actually necessary. Instrument cables are quite durable; they can withstand most types of harsh operating conditions.
Rodent-proof, explosion-proof, short-circuit and circuit-breaker protection......
Indeed. . The owner is worried that it might get damaged by small metal pieces = =+ But if that happens, no protection will be of any use
Did a small iron object break it? ? If the working environment is harsh, or if the distance is great, or if it’s on the ground... you can use a section of conduit; protective caps can be used on both ends, as well as rubber hoses or flexible tubes. When I installed it on-site, I used six-mm wire ducts between the meter and the accumulator, with flexible hoses connecting the ends. If installing wire ducts, the routing of the ducts should be neat; it’s best to have them run along columns or similar structures……
It’s like walking through capillaries: place it inside channel steel/angle steel and then secure it.
If it is a capillary tube, protect it with angle iron; drill a few holes in the angle iron to secure the capillary tube, which can effectively prevent damage from impacts and sparks. We’ve had sparks from welding upstairs fall on the capillaries before, causing holes in them. Additionally, for those detachable split-type wires, such as split electromagnetic or split vortex flow meters, the wire can be protected by inserting it into a flexible tube or snake tube; near heat sources, it can be secured with wire to prevent scalding or melting due to being too close to the heat. In the end, it still depends on the specific circumstances – on what potential hazards exist in the actual environment on site. Then there is the reinforcement of inspections. Hope it’s useful to you.
If no tubing is used, generally, the shielding layer and inner and outer sheaths of the instrument cable can be armored if necessary. When laying the cables and making connections, be careful to bend the cables before they enter the transmitter, in order to prevent water vapor from condensing and seeping into the instrument along the cables. Also, protect the transmitter terminals with gland seals and heat-shrink sleeves.