Wireless Considerations - Emerson Smart Wireless THUM Adapter Reference Manual

Section 1: Introduction
March 2014
Temperature limits
Operating Limit
–40 to 185 °F
–40 to 85 °C
1.3.6

Wireless considerations

Power up sequence
Power should not be applied to any wireless device until the Smart Wireless Gateway
("Gateway") is installed and functioning properly. Wireless devices should also be powered up
in order of proximity from the Gateway, beginning with the closest. This will result in a simpler
and faster network installation. Enable Active Advertising on the Gateway to ensure that new
devices join the network faster. For more information see the Smart Wireless Gateway Manual
(Doc. No. 00809-0200-4420).
THUM adapter position
If possible, the THUM Adapter should be positioned vertically, either straight up or straight
down, and it should be approximately 3 ft. (1 m) from any large structure, building, or
conductive surface to allow for clear communication to other devices. If the THUM Adapter is
mounted horizontally, wireless communication range may be decreased.
Figure 1-1. THUM adapter position
Conduit entry
When installing the THUM Adapter into the conduit entry of a wired device, use an approved
thread sealant. Thread sealant provides a water tight seal. The thread sealant also provides a
lubrication to ensure easy removal of the THUM Adapter.
M20 conduit adapter
When using the M20 Conduit Adapter on the THUM Adapter, use an approved thread sealant
and tighten wrench tight to the THUM Adapter. When installing the M20 conduit adapter into a
conduit tighten to 32.5 Nm/25 ft-lb. to ensure water tight seal.
4
Storage Limit
–40 to 185 °F
–40 to 85 °C
Reference Manual
00809-0100-4075, Rev CA
Introduction