The HART multiplexer interface will help your field devices communicate with your maintenance station. Say, you want to use a plant asset management (PAM) system in your company. If you have an analog control system that you can’t upgrade or change the cards on, this will be difficult. Unless you have a HART multiplexer.

HART multiplexer interface
Courtesy of FieldComm Group

The Hart multiplexer

You can use the HART multiplexer to connect the field devices with your workstation, allowing you remote access and condition monitoring of your devices.

Once upon a time, I found myself fighting with a messed-up multiplexer. For some reason, it kept throwing variations into the control system signals. We managed to fix it, but it did wind up costing more money. Installing a signal barrier after the HART multiplexer killed the variance and allowed the analog output to travel on its merry way. The moral of the story: don’t forget the HART multiplexer interface!

You usually won’t encounter problems like that, though. In general, a multiplexer can help in a remote monitoring system. However, today there are cheaper and simpler options than a multiplexer, so do some shopping first!

More HART multiplexer interface resources

Other resources that might interest you

HART communication and Viator Bluetooth interface
Can I use Viator Bluetooth with an AMS suite device manager?

Communication, Calibration and HART Devices
What’s the difference between communication and calibration for HART devices?

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