04 Series

Feature01

Among the longest battery life available

Designed to operate continuously for up to 9,000 hours (about one year of operation). Choose from dry cell or rechargeable batteries.

Feature02

Tested to 7-meter drop height for guaranteed durability

The 04 Series passed our 7-meter drop test, meaning it can withstand the impact of a fall from a height of 7 meters (about the height of a 2- or 3-story building), making it ideal for working at heights.

-->

Feature03

Detect a wide variety of gases

In addition to 3 standard gases (O₂, H₂S, CO), the 04 Series is equipped to detect a total of 12 different toxic gases, including SO₂, NO₂, HCN, and PH₃. Even allows for detection of both CO and O₂ with our new dual sensor, for a unique range of detectable gases in one unbelievably compact, portable device.

Product Name	SC-04	OX-04	HS-04	CX-04	CO-04(C-)	CO-04
Product Image
Product Subtitle	Portable Gas Monitor	Portable Gas Monitor	Portable Gas Monitor	Portable Gas Monitor	Portable Gas Monitor	Portable Gas Monitor
Product Type	Portable Gas Detector	Portable Gas Detector	Portable Gas Detector	Portable Gas Detector	Portable Gas Detector	Portable Gas Detector
Industries	Infrastructure, Sustainable Energy, Marine, Oil & Gas	Infrastructure, Sustainable Energy, Marine, Oil & Gas, Steel	Infrastructure, Sustainable Energy, Marine, Oil & Gas, Steel	Infrastructure, Sustainable Energy, Marine, Oil & Gas, Steel	Infrastructure, Sustainable Energy, Marine, Oil & Gas, Steel	Infrastructure, Sustainable Energy, Marine, Oil & Gas, Steel
Use Purpose	Safety management	Safety management	Safety management	Safety management	Safety management	Safety management
Single/Multi	Single	Single	Single	Multi	Single	Single
Certification	Japanese Certification, IECEx, ATEX, China Ex (China), etc.(dependsonthespecification)	Japanese Certification, IECEx, ATEX, China Ex (China), EN 50104, etc.(dependsonthespecification)	Japanese Certification, IECEx, ATEX, China Ex (China), etc.(dependsonthespecification)	Japanese Certification, IECEx, ATEX, China Ex (China), etc.(dependsonthespecification)	Japanese Certification, IECEx, ATEX, China Ex (China), etc.(dependsonthespecification)	Japanese Certification, IECEx, ATEX, China Ex (China), etc.(dependsonthespecification)
Detectable Gas	NH3, CL2, HCN, NO2, PH3, SO2	O2	H2S	CO & O2	CO with H2 elimination	CO
Detection Range	SO2：0.00 to 20.00 ppm(Display range 0.00 to 100.00 ppm) NO2：0.00 to 20.00 ppm HCN：0.0 to 30.0 ppm	0 to 25.0 vol%（Display range 0.0 to 40.0 vol%）	0.00 to 100.0 ppm（Display range 0.0 to 30.0 ppm / 30.0 to 200.0 ppm）	CO：0 to 500 ppm（Display range 0 to 300 ppm / 300 to 2000 ppm） O2：0.0 to 25.0 vol%（0.0 to 40.0 vol%）	0 to 500 ppm（Display range 0 to 300 ppm / 300 to 2000 ppm）	0 to 500 ppm（Display range 0 to 300 ppm / 300 to 2000 ppm）
Principle of Detection	Potentiostatic Electrolysis Method	Potentiostatic Electrolysis Method	Potentiostatic Electrolysis Method	Potentiostatic Electrolysis Method	Potentiostatic Electrolysis Method	Potentiostatic Electrolysis Method
Sampling Method	Diffusion	Diffusion	Diffusion	Diffusion	Diffusion	Diffusion
Ingress Proof Rating	IP66/67	IP66/67	IP66/67	IP66/67	IP66/67	IP66/67
Dimensions	Approx. 54 (W) x 67 (H) x 24 (D) mm (excluding projections)	Approx. 54 (W) x 67 (H) x 24 (D) mm (excluding projections)	Approx. 54 (W) x 67 (H) x 24 (D) mm (excluding projections)	Approx. 54 (W) x 67 (H) x 24 (D) mm (excluding projections)	Approx. 54 (W) x 67 (H) x 24 (D) mm (excluding projections)	Approx. 54 (W) x 67 (H) x 24 (D) mm (excluding projections)
Weight	Approx. 93g	Approx. 93g	Approx. 93g	Approx. 93g	Approx. 93g	Approx. 93g
Remarks	one touch calibration function	one touch calibration function	one touch calibration function	one touch calibration function	one touch calibration function	one touch calibration function
Power Source	AAA alkaline or Ni MH (eneloop) batteries (2 pcs.)	AAA alkaline or Ni-MH (eneloop) batteries (2 pcs.)	AAA alkaline or Ni MH (eneloop) batteries (2 pcs.)	AAA alkaline or Ni MH (eneloop) batteries (2 pcs.)	AAA alkaline or Ni MH (eneloop) batteries (2 pcs.)	AAA alkaline or Ni MH (eneloop) batteries (2 pcs.)
Continuous Operation	Approx. 3000 hours (AAA alkaline) Approx. 2000 hours (Ni-MH)	Approx. 3000 hours (AAA alkaline) Approx. 2000 hours (Ni-MH)	Approx. 9000 hours (AAA alkaline) Approx. 6000 hours (Ni-MH)	Approx. 4600 hours (AAA alkaline) Approx. 3000 hours (Ni-MH)	Approx. 6200 hours (AAA alkaline) Approx. 4200 hours (Ni-MH)	Approx. 9000 hours (AAA alkaline) Approx. 6000 hours (Ni-MH)
Operating Temperature Range	-40℃ to +60℃ [SO2,NO2](no sudden changes) -20℃ to +60℃ [HCN](no sudden changes) (Approx. 15-minute temporary use environment: -20℃ to +50℃[no sudden changes])	-40℃ to +60℃ (no sudden changes) (Approx. 15-minute temporary use environment: -20℃ to +50℃[no sudden changes])	-40℃ to +60℃ (no sudden changes) (Approx. 15-minute temporary use environment: -20℃ to +50℃[no sudden changes])	-40℃ to +60℃ (no sudden changes) (Approx. 15-minute temporary use environment: -20℃ to +50℃[no sudden changes])	-40℃ to +60℃ (no sudden changes) (Approx. 15-minute temporary use environment: -20℃ to +50℃[no sudden changes])	-40℃ to +60℃ (no sudden changes) (Approx. 15-minute temporary use environment: -20℃ to +50℃[no sudden changes])
Operating Humidity Range	0 to 95%RH (no condensation) (Approx. 15-minute temporary use environment: 10 to 90%RH[no condensation])	0 to 95%RH (no condensation) (Approx. 15-minute temporary use environment: 10 to 90%RH[no condensation])	0 to 95%RH (no condensation) (Approx. 15-minute temporary use environment: 10 to 90%RH[no condensation])	0 to 95%RH (no condensation) (Approx. 15-minute temporary use environment: 10 to 90%RH[no condensation])	0 to 95%RH (no condensation) (Approx. 15-minute temporary use environment: 10 to 90%RH[no condensation])	0 to 95%RH (no condensation) (Approx. 15-minute temporary use environment: 10 to 90%RH[no condensation])
Applicable Instruments

You may also be
interested in

Tips Fixed detector Portable detector

The Importance and Key Considerations of IP Codes When Choosing Gas Detectors

Learn why IP codes matter when choosing gas detectors. Discover how dust and water resistance ensure reliable performance and worker safety in harsh environments.

More Details

Tips Regulation Fixed detector Safety management Combustible gas

Heavy Fuel Oil and LNG

Heavy fuel oil powers global shipping with efficiency, affordability, and safety—maximizing cargo space and enabling long-distance voyages.

More Details

Fixed detector Application Concentration manage Combustible gas

Gas Monitoring for a More Sustainable Society

Riken Keiki aids sustainability with gas monitors, supporting circular economy efforts and eco-friendly manufacturing practices.

More Details

Application Surface analysis

Riken Keiki and the Mystery of the Mask of Tutankhamun

Riken Keiki technology revealed new insights into Tutankhamun’s golden mask, solving part of a mystery over 3,000 years in the making.

More Details

View All Posts

Why Customers Choose Us

Since our beginnings in 1939, Riken Keiki has continued to lead the way in gas detection technology, laying the foundations that support our modern society.

Discover why customers continue to choose Riken Keiki, the global standard in gas detection equipment.