Expert’s answer: Installing a THUM with Rosemount 8712

Probably THUM with Rosemount 8712. You see, the wireless adapter THUM has more than one way to install on a field device, depending on whether the device has two wires or four.

With a four-wire device like the 8712, you also have four different ways you can install the THUM:

  • passive without a resistor
  • passive with a resistor
  • active without a resistor
  • active with a resistor

Take a look at this graphic based on an active device with a resistor:

THUM with Rosemount 8712
THUM installation – Courtesy of Emerson Automation Solutions

You also need to consider the wireless signal when setting up the THUM. For most networks, you should install it with the antenna pointing up. To do that, you may need an extra accessory, as you can see in the picture below:

Thum installation
Micro Motion with THUM installation – Courtesy of Emerson Automation Solutions

If you have more questions about how to set up your THUM, here we have a Q&A about configuration.

And you can see the market’s current wireless solutions here:

Other resources that might interest you

Rosemount 8712 and another flow sensor
Can you use a Rosemount 8712 with another brand sensor? 

Rosemount 8712 testing
Is there a tool that can simulate a flow meter?

K-factor for Rosemount 8712
How do you check the K-factor on a transmitter?

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