95/TX Operation & Maintenance Manual, Revision 1.0
Page 8
KEY FEATURES
BATTERY-POWERED COMBUSTIBLE MONITORS
In addition to standard low-power electrochemical sensors, the new GASMAX/TX supports an ultra-low
power infrared detector for methane, propane, general hydrocarbons as well as carbon dioxide gas. Dual-
channel GASMAX/TX monitors can be configured to measure both combustible and toxic hydrogen sulfide
gases with no external source of power.
LISTENER DEVICE AUTO-CONFIGURATION
Each GASMAX/TX gas monitor periodically broadcasts a
config data packet
that contains information on
tag name, engineering units, zero and span values, alarm levels and other user-adjustable settings. When
a C2/TX site manager or 95/TX alarm station receives a
config data packet, setup information in the
GASMAX/TX is automatically loaded into the listener’s channel information database. This makes it
unnecessary to independently program listener devices, and allows them to announce alarms using
customer-recognizable tag names such as “North Fence” or “Drillers Shack” previously programmed into
the individual GASMAX/TX monitor.
REMOTE ACCESS
The C2/TX Wireless Site Manager can be optionally configured for satellite or cellular remote access
packages. These packages include a dedicated satellite or cellular modem with optional GPS receiver,
antenna cable, lightning arrestor and antenna, and are custom programmed to query the C2/TX Modbus
database and transmit alarm and event data to network-based servers that display the information on a
“dashboard” display. Users can setup the dashboard to automatically generate emails, text messages or
cellular phone calls in the event of a gas alarm or maintenance event.
ADVANCED RF TECHNOLOGY
GDS Corp wireless products use 900 MHz or 2.4 GHz RF modems based on Frequency Hopping Spread
Spectrum (FHSS) technology. FHSS radios offers longer range and higher power than those found in typical
mesh networks. In the United States, Canada and selected other countries, 900 MHz is recommended due
to increased power output available (up to 1 watt), greater range and ability of lower frequency signals to
travel around interfering objects. Systems utilizing 2.4 GHz are license-free in most areas of the world and
tend to be less susceptible to interference from existing radio frequency sources.
