The RKI Direct Connect series gas sensors are highly reliable and very cost
effective for the detection of common gas hazards. The direct connect series
are available for LEL, H2 Specific LEL, LEL IR, Oxygen, H2S, CO, CO2, and for a
variety of toxic gases. The sensors for LEL, H2, Oxygen, H2S, CO2, and Carbon
Monoxide are explosion-proof with flame arrestors, and approved for use in
hazardous areas (Class 1, Div. 1 Groups B, C, D). An optional non-explosion
proof version is available for oxygen, H2S, CO, and CO2 for use in nonhazardous
atmospheres.

The Direct Connect sensors can be used in two different ways. The sensors
can be mounted directly to the controllers as a complete stand alone system,
or they can be mounted to explosion proof junction boxes for remote detection.

The toxic sensors are electrochemical type plug-in sensors, which provide
high specificity, fast response, and long life. The plug-in design allows quick
replacement in the field with no tools required. Toxic sensors are designed
for use in Class I, Div. 2 hazardous locations. Sensors are available for NH3,
AsH3, Cl2, ClO2, HCN, PH3, and SO2.

The Direct Connect sensors can be used either indoors or outdoors. The
flame arrestors for the explosion-proof versions utilize a patented coating
which make them water repellent. Also, splash guards are available for use in
very wet environments. An optional stainless steel junction box is available for
corrosive environments.

All of the Direct Connect sensors are designed to specifically interface with
RKI Beacon 110, 200, and 410A controllers.

Features
• Available gases include
• Available gases include
    ◦ LEL, H2S, CO, & CO2
    ◦ Toxic sensors include NH3, AsH3, Cl2, ClO2, HCN, & SO2
• Infrared sensor for combustibles and CO2
• Patented water repellent sensor coating
• Explosion proof construction
• Optional stainless steel junction box