WirelessHART Toxic & Combustible Gas Detector
IM_TCD60-01
www.ueonline.com/vanguard
17
2.7 Antenna Placement Considerations
This device complies with Part 15 of the FCC rules: may not cause harmful interference; must accept any
interference, including that which may cause undesired operation of the device.
To comply with IC RF exposure compliance requirements, the antenna used for this device must be
installed to provide a separation distance of at least 20cm from all persons.
FCC ID SJC-ETERNA2 contains IC 5853(A)-ETERNA2 CE0976
Wall mounting could affect the signal strength of the device.
The antenna supplied with the device is an omnidirectional antenna, permanently affixed to the product.
In order to facilitate communication with other WirelessHART devices as part of a wireless mesh network, it
is recommended that the device be mounted with a minimum of obstructions and noise interference. The
maximum range of communication between the device and other devices
(instrumentation, repeaters, gateways) is 750 feet (229 meters).
2.8 Network Configuration
A Network ID and Join Key are required to communicate over the wireless network.
It is recommended that network configuration be performed right after battery installation to maximize bat-
tery life. The device must be configured to communicate over the wireless network. A Network ID and Join
Key are required, and must match the Network ID and Join Key of the wireless gateway and other wireless
devices in the network.
This device sends critical gas concentration information reliably and securely via WirelessHART
communication protocol, version 7.2. Configuration can be completed using the UE Vanguard
Configurator Unit, any HART handheld communicator, or directly into the control system using a HART
modem. HART terminals are located inside the intrinsically safe battery compartment and are clearly marked
(see Figure 24).
Configuring the gas detection device in the hazardous area requires a suitable, approved intrinsically safe device
(such as a handheld communicator, etc.). The entity parameters of the device being connected must be compat-
ible with those of the gas detection device.
Before connecting any device in the hazardous location, the following entity parameters must be verified:
U
o
< U
i
prog L
o
> L
i
prog
I
o
< I
i
prog
U
i
> U
o
prog
P
o
< P
i
prog
I
i
> I
o
prog
C
o
> C
i
prog
Gas Detector Intrinsic Safety Entity Parameters:
U
o
= 4.935V; I
o
= 0.179A; P
o
= 0.22W; C
o
= 25uF; L
o
= 0.25mH
U
i
= 3.8V; I
i
= 64uA; Ci = Negligible; Li = Negligible