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Reference Manual
00809-0100-4811, Rev DA
Appendix A: Reference Data
January 2015
Reference Data
Smart Wireless THUM™ adapter
The optional THUM adapter can be mounted directly on the transmitter or by using a remote
mounting kit. IEC 62591 (WirelessHART) enables access to multi-variable data and diagnostics,
and adds wireless to almost any measurement point. See the Rosemount Smart Wireless THUM
adapter Product Data Sheet (document number 00813-0100-4075) and Smart Wireless THUM
Adapter for Rosemount Process Level Transmitter Applications (document number
00840-0100-4026).
Figure A-3. Smart Wireless THUM Adapter
External power supply
The input voltage (U
i
) for HART is 11 to 42 Vdc (11 to 30 Vdc in IS applications, and 16 to 42 Vdc
in Explosion-proof/Flameproof applications).
For flameproof/explosion-proof installations the Rosemount 3300 Series Transmitters have a
built-in barrier; no external barrier needed.
When a Smart Wireless THUM adapter is fitted, it adds a maximum drop of 2.5 Vdc in the
connected loop.
R = load resistance ()
U
E
= external power supply voltage (Vdc)
U
I
= input voltage (Vdc)
Figure A-4. External Power Supply for HART
IS electrical parameters
U
i
= 30 V, l
i
= 130 mA, P
i
= 1 W, L
i
= 0, C
i
= 0
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