Physical Specifications; Specifications And Reference Data - Emerson Smart Wireless THUM Adapter Reference Manual

Reference Manual
00809-0100-0775, Rev AA
March 2009

Specifications and Reference Data

Appendix A
Specifications
Functional
Specifications
Physical
Specifications
Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . page A-1
Dimensional Drawings . . . . . . . . . . . . . . . . . . . . . . . . . . . . page A-3
Ordering Information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . page A-4
Input
Any 2- or 4-wire HART 5.0 powered device.
Output
WirelessHART.
Humidity Limits
0–100% relative humidity
Burst Rate
User selectable, 8 sec. to 60 min.
Electrical Connections
The THUM™ is connected into a powered 4–20 mA loop, powering itself by scavenging power. The THUM causes a voltage
drop across the loop. The drop is linear from 2.25 volts at 3.5 mA to 1.2 volts at 25 mA, but does not effect the 4–20mA signal
on the loop. Under fault conditions, the maximum voltage drop is 2.5 volts.
Power Supply
Minimum load on loop 250 Ohms to maintain normal operating functions of the sub-device, the power in the loop must have at
least a 2.5 V margin at a 250 Ohm load.
HART Communicator Connections
Utilize sub-device HART connections.
Materials of Construction
Enclosure
Housing - Low-copper aluminum
Paint - Polyurethane
Antenna
Poly butadine terephthalate (PBT)/Polycarbonate (PC) integrated omnidirectional antenna
Weight
.65 lbs. (.29 kg)
Enclosure Ratings
Housing option code D is NEMA 4X, and IP66.
Smart Wireless THUM Adapter