RKI SC-01 Single Toxic Gas Monitor

RKI SC-01 Single Toxic Gas Monitor

Pine Item #56070

Built around RKI's latest smart sensor technology, the SC-01 is a versatile single toxic gas monitor. The smart sensors are  interchangeable, with the SC-01 automatically recognizing any sensor change without any set up or configuration changes.   The sensor's calibration information also stays with each sensor. Weighing only 7.6 ounces, it has many features which  set it apart from the competition. For example, it offers sensors for Arsine (AsH3), Ammonia (NH3), Carbon Monoxide  (CO), Chlorine (Cl2), Hydrogen Cyanide (HCN), Hydrogen Sulfide (H2S), Phosphine (PH3), and Sulfur Dioxide (SO2). The  SC-01's unique extender cable allows the sensor to be attached to the end of a 10 foot cable for remote monitoring and  quick response.   The SC-01's large LCD display shows the gas reading, battery level, current time, and will automatically backlight in alarm  conditions. Standard alarm types include vibration, visual, and audible alarms that can be set to latching or self-resetting.   Controlled by a microprocessor, the SC-01 continuously checks itself for sensor connections, low battery and circuit  trouble. The batteries are simple to replace, requiring no tools to access the battery compartment. One set of AA alkaline  batteries provides continuous operation for over 250 hours.   The SC-01 is equipped with datalogging capability as a standard feature which communicates through an IR port with an  optional Windows ® based datalogging software program. Calibration intervals and reminders are user adjustable and can  be set to either go into alarm or to lock the user out of normal measurement mode once a calibration period has expired.


Available for LEL, O2, H2S, or CO

Operates 3,000 hours on alkaline (GP-03 up to 35 hours)

Pocket size 2.1” x 2.6” x 0.9”

Lightweight, 2.8 ounces


Data log from 5 to 300 hours

Audible / visual / vibration alarms

Automatic backlight

Peak Hold, STEL & TWA

Intrinsically safe, ATEX & CSA

3 Year warranty H2S & CO

2 Year warranty LEL & O2


Hazardous Material



Refineries / Petrochemical

Water / Wastewater Treatment



Chemical Plants

Fire Services

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Technical Specifications

Model NameCO-03HS-03OX-03GP-03
Gas DetectedCarbon Monoxide (CO)Hydrogen Sulfide (H2S)Oxygen (O2)Combustible gas
Detection PrincipleElectrochemicalGalvanic cellCatalytic combustion
Detection Range
0 – 500 ppm
(1 ppm)
0 – 100 ppm
(0.5 ppm)
0 – 40%vol.
(0.1% vol.)
0 – 100% LEL
(1% LEL increments)
Alarm Set Points1st 25 ppm
2nd 50 ppm
TWA 25 ppm
STEL 200 ppm
Over 500 ppm
1st 5.0 ppm
2nd 30.0 ppm
TWA 1.0 ppm
STEL 5.0 ppm
Over 100.0 ppm
Low 19.5% vol.
High 23.5% vol.
Over 40.0% vol.
1st 10% LEL
2nd 50% LEL
Over 100% LEL
Alarm Types
  • Gas alarms: 1st and 2nd (user adjustable), OVER alarm, STEL and TWA
  • Trouble alarms: Sensor connection, low battery circuit failure, and calibration range error
Alarm Methods
  • Gas alarm: Flashing LED’s, intermittent buzzer, flashing gas value, and vibration
  • Trouble alarm: Flashing LED’s, intermittent buzzer, and display of error message
  • STEL & TWA alarms: Flashing LED’s, intermittent buzzer, flashing gas value, and vibration
Gas SamplingDiffusion
Response TimeT90 in 30 secondsT90 in 20 seconds
(Alarms within
5 seconds when exposed to 12% O2)
T90 in 30 seconds
which ever is greater
± 5% of reading or ± 5 ppm CO± 5% of reading or ± 2 ppm H2S±0.5% O2± 5 of reading or
± 2% LEL
Power OptionsAlkaline dry cell (2-AAA size)Alkaline dry cell (2-AAA size)
Ni-MH battery
Continuous OperationAlkaline dry cell: more than 3,000 hours
(at 25°C, no backlight)
Alkaline: 35 hrs
Ni-MH: 30 hrs
Safety RatingATEX/IECEx approved. CSA classified, “C/US”, as intrinsically safe, Class I, Division 1, Groups A, B, C, D
Dimensions & Weight2.1” W x 2.64” H x 0.94” D, (54 x 67 x 24 mm); 2.8 ounces (80 g)
DisplayDigital LCD, gas name & concentration, auto backlighting during alarm, operation icon, battery icon
Operating Temp. & Humidity-4°F ~ 122°F (-20°C ~ 50°C);
Humidity below 90% RH (non-condensing)
Manuals & Data Sheets