S

  • S-Series Methane (CH4) 0-100% LEL, IR sensor / transmitter with j-box, UL version

    $1,075.00
  • S-Series Hydrocarbon (isobutane) 0-100% LEL, IR sensor / transmitter with j-box, UL version

    $1,075.00
  • S-Series LEL sensor (catalytic) / transmitter with explosion proof j-box, UL version

    $800.00

S Series Category

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.

The only tools required to calibrate the S series are a voltmeter, screwdriver, and cal 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 utilize a patented coating which make them water repellent, and splash guards are also available for use in very wet environments. The transmitter operates from 24 VDC (11 VDC to 30 VDC), and provides a 4-20mA signal which can be connected to a wide variety of controllers.
  • Explosion proof housing
  • Patented water repellent sensor coating
  • Operates independent of a controller
  • Available for LEL, H2S, CO, O2, and ppm HC
  • IR sensors available for LEL & CO2
  • H2 Specific LEL version available
  • Long life sensors (2 + years typical)
  • Competitively priced
  • UL or CSA approved
  • 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
LELO2H2SCOInfrared
CO2CH4HC
Part #65-2400RK65-2516RK65-2422RK-0565-2432RK-0565-2391RK-0365-2390RK-CH465-2390RK-HC
65-2400RK-05
Measuring Range0-100% LEL0-25% Vol.0-100 ppm0-300 ppm0-5% Vol.0-100% LEL
Max Current Draw
200 mA (power wires)25 mA (2 wire system)60 mA (power wires)
25 mA (signal wires), 3 wires25 mA (signal wires), 3 wires
Outputs4 - 20 mA signal4 - 20 mA signal4 - 20 mA signal4 - 20 mA signal4 - 20 mA signal4 - 20 mA signal4 - 20 mA signal
Response Time30 seconds to 90% of concentration20 seconds to 90% of concentration45 seconds to 90% of concentration30 seconds to 90% of concentration
Operating Environment
LocationIndoor/outdoor.Indoor/outdoor.Indoor or outdoor.
Explosion proof for Class I, Div. 1, Groups B, C, and D.Explosion proof for Class I, Div. 1, Groups B, C, and D. (65-2516RK)Explosion proof for Class I, Div. 1, Groups B, C, and D.
Temperature-40 to 185° F-4 to 113° F-4 to 122° F
Humidity0 - 99% RH, non condensing
HousingAluminum explosion proof enclosure
Sensors
TypeCatalytic CombustionGalvanic CellElectrochemicalInfrared
Life Expectancy1 to 2 years with normal intermittent exposure to flammable gas2 years normal service2 years normal service when intermittently exposed to H2S2 to 3 years normal service5+ years normal service
Controls
ZeroSets transmitter output to 4 mA with 0% LEL output from combustible sensorSets transmitter output to 4 mA with an inert gas (zero) output from O2 sensorSets transmitter output to 4 mA with zero output from H2S sensorSets transmitter output to 4 mA with zero output from CO sensorSets transmitter output to 4 mA with zero output from CO2 sensorSets transmitter output to 4 mA with 0% LEL output from combustible sensor
SpanSets transmitter output to 20 mA with 100% LEL output from
combustible sensor
Sets transmitter output to 17.44 mA with 20.9% Vol. O2 (fresh air) output from O2 sensorSets transmitter output to 20 mA with 100 ppm output from H2S sensorSets transmitter output to 20 mA with 300 ppm output from CO sensorSets transmitter output to 20 mA with 5% volume output from CO2 sensorSets transmitter output to 20 mA with 100% LEL output from combustible sensor
Operating Voltage11 VDC to 30 VDC
Approvals65-2400RK: UL65-2516RK: C CSA USC CSA USC UL US
65-2400RK-05: C CSA US
WarrantyOne year materials and workmanship
  • Placeholder

    Cal cup for IR 3/4” NPT sensor

    $15.00
  • Placeholder

    Cal cup, standard, fixed systems, for conduit mounting, LEL/O2/H2S/CO, (NPT type)

    $40.00
  • Placeholder

    Cylinder, N2 100%, 17L steel

    $45.00
  • Placeholder

    Cylinder, Propane 50% LEL in air, 34L steel

    $85.00
  • Cylinder, Zero air, 34L steel

    $45.00
  • Placeholder

    Reducer, 3/4 NPT male x 1/2 NPT female, xplprf

    $6.00
  • Placeholder

    Regulator, econo, no gauge, no knob, 17/34L, 0.5 LPM

    $80.00
  • Placeholder

    Screwdriver, pot adjust, no logo

    $5.00
  • Placeholder

    Xmtr, 4-20 mA, H2S/CO, S type

    $225.00
  • Placeholder

    Xmtr, 4-20 mA, LEL, S type

    $250.00
  • Placeholder

    Cylinder, CO 50 ppm in air, 34L steel

    $55.00
  • Placeholder

    Cylinder, H2S 25 ppm in N2, 34AL

    $125.00
  • Placeholder

    Cylinder, Hexane 15% LEL/air, 34L steel

    $55.00
  • Placeholder

    Tubing, polyurethane, 3/16 OD x 5/16 ID, per foot

    $2.00
  • Placeholder

    Charcoal Filter for CO sensor (GX-82A/-86A), fixed system CO sensors

    $6.00
  • Placeholder

    Cylinder, CH4 50% LEL in air, 34L steel

    $85.00
  • Placeholder

    Cylinder, N2 100%, 34L steel

    $55.00
  • Regulator, with gauge & knob, 17/34L, 0.5 LPM

    $125.00
  • Placeholder

    Boot, filter, for ES-1531-CO filter

    $9.60
  • Placeholder

    Gasket, CT-7 Sensor Housing

    $1.50
  • Placeholder

    J-box lid, standard blank, for Killark HKB

    $170.00
  • Placeholder

    J-box w/o lid, machined for xmtrs

    $200.00
  • Placeholder

    Sensor, Hydrogen Sulfide (H2S) 0-100 ppm, plug-in type, CT-7 style, cCSAus version

    $195.00
  • Sensor, Hydrogen (H2) 0-2000 ppm sensor only, 1/2 NPT, UL version

    Sensor, Hydrogen (H2) 0-2000 ppm sensor only, 1/2 NPT, UL version

    $400.00
  • Sensor, LEL combustible (catalytic), direct connection (no transmitter, no j-box), cCSAus version

    Sensor, LEL combustible (catalytic), direct connection (no transmitter, no j-box), cCSAus version

    $300.00
  • Sensor, LEL combustible (catalytic), direct connection (no transmitter, no j-box), UL version

    Sensor, LEL combustible (catalytic), direct connection (no transmitter, no j-box), UL version

    $250.00
  • Placeholder

    Sensor, LEL H2 specific, explosion proof direct connection, with silicone resistance, cCSAus version (no transmitter, no j-box)

    $450.00
  • Placeholder

    Sensor, LEL Hydrogen (H2) specific, 1/2 NPT, with guard, with silicone resistance, UL version (no transmitter, no j-box)

    $400.00
  • Sensor, Oxygen (O2) 0-25%, capillary type, plug-in replacement for O2 assembly (65-2514RK & 65-2497RK)

    Sensor, Oxygen (O2) 0-25%, capillary type, plug-in replacement for O2 assembly (65-2514RK & 65-2497RK)

    $140.00
  • Sensor, Oxygen (O2) 0-25%, non explosion proof direct connect, partial pressure type (no transmitter, no j-box)

    Sensor, Oxygen (O2) 0-25%, non explosion proof direct connect, partial pressure type (no transmitter, no j-box)

    $250.00

  • S-Series LEL sensor (catalytic) / transmitter with explosion proof j-box, CSA version

    $850.00
  • S-Series Hydrogen Sulfide (H2S) sensor / transmitter with explosion proof j-box, CSA version

    $900.00
  • S-Series Carbon Monoxide (CO) sensor / transmitter with j-box, CSA version

    $900.00
  • Sensor, Carbon Monoxide (CO), H2 compensated, S series sensor / transmitter, with j-box

    $995.00
  • S-Series LEL Hydrogen (H2) specific sensor / transmitter with explosion proof j-box, UL version

    $900.00
  • S-Series LEL Hydrogen (H2) specific sensor / transmitter with explosion proof j-box, CSA version

    $950.00