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S Series Diffusion Sensor and Transmitter

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The RKI S-Series gas sensor/transmitters are highly reliable and cost effective basic 4-20 mA transmitters for the detection of common gas hazards. The S-Series transmitters are available for LEL (catalytic), LEL (IR) CH4, LEL (IR) HC, O2, H2S, CO, or CO2 (IR). The electronics are encased inside a potted package to avoid damage from mechanical abuse or corrosion, and this assembly is installed inside an explosion-proof enclosure. All sensors are explosion-proof with flame arrestors and approved for use in hazardous atmospheres. There is also an optional version for oxygen for use in non-hazardous atmospheres.

Indoor or outdoor. Explosion proof for Class I, Div. 1, Groups B, C, and D.

Features
• Explosion proof housing
• Patented water repellent sensor coating
• Available for LEL, H2S, CO, O2 , and ppm HC
• IR sensors available for LEL & CO2
• Long life sensors (2 + years typical)
• Competitively priced
• UL or CSA classified (most versions)

The only tools required to calibrate the S-Series are a voltmeter, screwdriver, and calibration gas. The zero and calibration functions are performed by adjusting potentiometers on the amplifiers. The amplifier has test jacks for connecting to a voltmeter for calibration purposes, and the sensor response is viewed on the voltmeter as a 100 mV to 500 mV signal. Field calibration can be performed easily and quickly by one person.

The S-Series transmitters can be used either indoors or outdoors. The flame arrestors utilise a patented coating which make them water repellent, and splash guards are also available for use in very wet environments.

Applications
• Petrochemical Plants
• Refineries
• Gas Plants
• Offshore Drilling Platforms
• Water & wastewater treatment plants
• Pulp & paper mills
• Gas, telephone, & electric utilities
• Parking garages
• Manufacturing facilities
• Steel
• Automotive
• Chemical storage buildings

The transmitter operates from 24 VDC (11VDC to 30 VDC), and provides a 4-20mA signal which can be connected to a wide variety of controllers.

Ordering Information:

All S-Series include the sensor and explosion proof housing.

65-2513RK S-Series Oxygen (O2) sensor (capillary type) / transmitter, j-box (non explosion proof)

CSA Version
65-2400RK S-Series LEL sensor (catalytic) / transmitter with explosion proof j-box, UL version
65-2400RK-05 S-Series LEL sensor (catalytic) / transmitter with explosion proof j-box, CSA version
65-2450RK-05 S-Series LEL Hydrogen (H2) specific sensor / transmitter with explosion proof j-box, CSA version
65-2422RK-05 S-Series Hydrogen Sulfide (H2S) sensor / transmitter with explosion proof j-box, CSA version
65-2432RK-05 S-Series Carbon Monoxide (CO) sensor / transmitter with j-box, CSA version
65-2516RK S-Series Oxygen (O2) sensor (capillary type) / transmitter, explosion proof with conduit mounting and j-box, CSA version

UL Version
65-2450RK S-Series LEL Hydrogen (H2) specific sensor / transmitter with explosion proof j-box, UL version
65-2390RK-CH4 S-Series Methane (CH4) 0-100% LEL, IR sensor / transmitter with j-box, UL version
65-2390RK-HC S-Series Hydrocarbon (isobutane) 0-100% LEL, IR sensor / transmitter with j-box, UL version
65-2391RK-02 S-Series Carbon Dioxide (CO2) 0-5,000 ppm, IR sensor / transmitter with j-box, UL version
65-2391RK-03 S-Series Carbon Dioxide (CO2) 0-5%, IR sensor / transmitter with j-box, UL version…
65-2391RK-05 S-Series Carbon Dioxide (CO2) 0-50%, IR sensor / transmitter with j-box, UL version