• Approved by explosion prevention test
  • Approved by Nippon Kaiji Kyokai(NK) type testing
  • Approved by HK test


Model OMA-3A
Sampling by Diffusion
Measuring Range 0 - 25%
Resolution 1%
Accuracy ±0.7%O2
Display Method Analog
Alarm Setting 18%以下
Alarm Method Buzzer
Explosion proof i2G4(Roken No.24340)
Response Time 90% of the response within 10 seconds
Power Source 2 size D manganese batteries
Continuous Operation Up to 150 hours
Power Alarm Checked by switching
Operating Temperature Range -10 - 40℃
Dimensions 162(W)×173(H)×104(D) mm
Weight 1.3kg
Standard Accessories Sensor cord(5m), leather case