After the radar level gauge signal is sent to a paperless recorder for display, how can it also be transmitted to the control room?
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Hello everyone. Currently, the signal from a radar level gauge is sent to a paperless recorder in a nearby cabinet for display; we also want to transmit this signal to the control room. How can this be achieved? Paperless recorder model: AX102-4-3; it seems to support 485 communication according to what I’ve checked. In this case, should a signal distributor be added to the cabinet with two wires running out to the remote control room, or should the signal be taken from the recorder? How to take it? Please explain in detail. What kind of thread should be used? Thank you!
Considering cost, convenience, and value for money. It can be controlled from the control room using MODBUS RS485. All signals from the recorder can be routed there.
The most reliable method is to use a signal distributor, one input and two outputs
A one-in-two-out safety barrier will do the trick, right?
The signal from a radar level gauge is generally an 4-20MA output. As mentioned on the 4th floor, you just need to purchase a 4-20MA two-way signal safety barrier to obtain two separate signals. It can be bought for a few hundred yuan. Install it in the paperless recorder cabinet, and transmit the signal to the recorder along the way. An additional signal cable is laid from the safety barrier to the control room.
It’s practical to use a series connection at a short distance; there’s an option where no power distribution is needed
What was said on the sixth floor is correct; it’s best to send the signals along two separate paths, or use a recorder for output, but there may be a delay in the signals
It seems that the eldest senior brother was right after all! The problem is solved