3A2-D2I FOXBORO

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3A2-D2I  FOXBORO Power module In Stock

The ripple and noise specifications prevent direct interference with the 3A2-D2I signals. The 

impedance limit ensures that 3A2-D2I signals recognize the power supply as a low impedance path, 

and prevents inadvertent coupling of multiple 3A2-D2I loops when powered from a common 

power supply. (The resistance of output fuses, if any, must be included when measuring this 

value.) The power supply voltage limits are determined by the instruments in the loop, and not by 

requirements of 3A2-D2I protocol.

The transmitter is completely sealed to resist moisture. However, improper routing of conduit for 

the power or sensor wires can allow moisture to collect inside the housing and provide conductivity

 paths between the various screw terminals. This can cause errors until the housing is dried out. 

In extremely humid environments where the conduit cannot be installed with recommended conduit

 drains as shown in Figure 9, Invensys Foxboro recommends installing a poured conduit seal 

at the conduit entries of the housing. This will eliminate the conduit moisture from entering the 

housing. Make sure to use a silicone sealing compound at all threaded connections between the 

poured seal and the transmitter housing.

One manufacturer of poured conduit seals is Cooper Industries, Crouse-Hinds Division (Phone 

315-477-7000 in U.S.A.).

Product details:

3A2-D2I  FOXBORO Power module

Contact information：

Contact person：Luna Chen

Email Address:：sales6@saulplc.com

WhatApp： +86 13358378970

We look forward to your inquiry and will get back to you as soon as possible.

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