Part #	LEL 35-3000RKA-LEL	O2 35-3000RKA-O2	H2S 35-3000RKA-H2S
Min Operating Voltage	23 VDC
Max Operating Voltage	30 VDC
Max Current Draw	250 mA	200 mA
Signal Output	4 mA at 0% LEL 20 mA at 100% LEL	4 mA at 0 % Oxygen 20 mA at 25% Oxygen	4 mA at 0 ppm H2S 20 mA at 100 ppm H 2 S
Response Time	30 seconds to 90% of concentration	20 seconds to 90% of concentration	45 seconds to 90% of concentration
Operating Environment
Location	Indoor or outdoor
Temperature	30 to 120° F
Humidity	0 - 99% RH, non condensing
Housing	Wall mounting grey polycarbonate with hinged cover. NEMA 4X
Sensor Type	Catalytic Combustion	Galvanic Cell	Electrochemical
Life Expectancy	1 to 2 years normal service	2 years normal service	2 years normal service
Dimensions	Height 8.5" (216 mm) Width 7.0" (178 mm) Depth 4.3" (109 mm)
Sampling Method	Sample draw pump
Display	Flow meter, LED's for operational status; pilot, fail
Warranty	One year, materials and workmanship

Part #	CO 35-3000RKA-CO	HC 35-3000RKA-HC
Min Operating Voltage	23 VDC
Max Operating Voltage	30 VDC
Max Current Draw	200 mA	250 mA
Signal Output	4 mA at 0 ppm CO 20 mA at 300 ppm CO	4 mA at 0 ppm 20 mA at 500 ppm Hexane. Linear.
Response Time	30 seconds to 90% of concentration
Operating Environment
Location	Indoor or outdoor
Temperature	30 to 120° F
Humidity	0 - 99% RH, non condensing	5 - 95% RH, non condensing
Housing	Wall mounting grey polycarbonate with hinged cover. NEMA 4X
Sensor Type	Electrochemical	Metal Oxide Semiconductor
Life Expectancy	2 to 3 years normal service	5 to 10 years typical
Dimensions	Height 8.5" (216 mm) Width 7.0" (178 mm) Depth 4.3" (109 mm)
Sampling Method	Sample draw pump
Display	Flow meter, LED's for operational status; pilot, fail
Warranty	One year, materials and workmanship

The 35-3000RK series is a compact sample draw detector assembly with a built-in pump that accepts a 24VDC input. This
unit features a NEMA 4X enclosure making it dust, water and corrosion resistant. It also features a flowmeter with
adjustable flow and a low flow alarm which warns of any obstructions or restrictions in the flow system. Combustibles, oxygen,
hydrogen sulfide and carbon monoxide versions are available with or without a 4-20 mA transmitter. The 35-3000RK
is also available with both LEL and oxygen sensors in one unit.
The 35-3000RK is capable of single person calibrations and remote sampling at up to 5,000 ft. from a controller, and interfacing
to any RKI or third party control system (utilizing a 4-20 mA feedback signal). Multigas versions of this efficient sample
draw system are available with up to four sensors, LEL, O2, H2S and CO all in one enclosure. This is a very cost effective
way of monitoring for several gases that may be in the same place.