RKI Instruments

RKI Instruments SC-04 Series Cl2 Single Gas Monitor 73-0075

Usually ships in 3 - 4 days


RKI Instruments SC-04 Series CL2 Single Gas Monitor is is a single-gas toxic personal monitor designed to operate for many years with field replaceable sensors and filters. With a protective rubber boot and an IP-67 rating, the 04 Series is built to operate for a long time.

Applications: Hazardous material, Mining Refineries / petrochemical, Water / wastewater treatment, Pharmaceuticals, Utilities, Chemical plants, Fire Services

Key Features:

  • Personal monitoring for CL2
  • Operates 3,000 hours on alkaline
  • Pocket size 2.1"(W) x 2.6"(H) x 0.9"(D)
  • Light weight 2.8 ounces
  • Impact, dust, and water resistant (IP-67)
  • Replaceable rubber boot
  • Data log 10 to 600 hours with adjustable intervals
  • Audible / visual / vibration alarms
  • Automatic backlight
  • Low battery alarm
  • Intrinsically safe, ATEX and C / US approvals
  • 1 year warranty 

  • Gas Detected: Chlorine
  • Detection principle: Electrochemical
  • Detection range: 0 ~ 20.00 ppm (0.05 ppm)
  • Alarm set points: 1st: 1.00 ppm, 2nd: 2.00 ppm, 3rd: 10.00 ppm, TWA: 0.5 ppm, STEL: 1 ppm
  • Alarm types: Gas alarms: 1st, 2nd and 3rd (user adjustable), OVER alarm, STEL and TWA, Trouble alarms: Sensor connection, low battery, circuit failure, and calibration range error
  • Gas sampling: Diffusion
  • Response time: T90 in 10 seconds
  • Accuracy: ± 10% of reading or ± 5% of full scale (whichever is greater)
  • Data logging: 10 second intervals = 5 hours, 5 minute intervals = 150 hours, 10 minute intervals = 300 hours Instrument records alarms, alarm trends, gas readings, calibration & bump test history, instrument information and settings.
  • Continuous operation: Alkaline dry cell: 3,000 hours (at 25°C, no backlight)
  • Safety rating: ATEX/IECEx approved. QPS classified, “C / US”, as intrinsically safe, Class I, Division 1, Groups A, B, C, D
  • Enclosure: Dust and water resistant with IP-67 rating
  • Display: Digital LCD, gas name & concentration, auto backlighting during alarm, operation icon, battery icon

Monitor Includes:

  • Rubber protective boot
  • Alkaline batteries
  • Alligator clip
  • Data log software

Please Note: Once activated, these units cannot be shut down and will continue to run for their life span prohibiting these items from being shipped because the alarm may be activated during transit. Additionally, these items are unable to be resold after activation. Of course, if you haven't yet activated your monitor, we will happily take it back.

Optional Accessory: Downloading cable, USB / IrDA adapter

Specification Sheet: 

SC-04 Manual: 

04 Series User Setup Program Operator’s Manual: 

04 Series Data Logger Management Program Operator’s Manual: 

Part Number:

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Additional Information

Gas Type:
Chlorine (Cl2)
Country of Origin:
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