Riken Keiki OX-08 Handheld Oxygen Meter

Detection Principle: Galvanic cell with diaphragm

Target Gas: Oxygen

Detection Range: 0 to 40.0% (Resolution: 0.1%)

Indication Accuracy※1: Within ±0.7%

Alarm Setpoints:

1st Alarm / 2nd Alarm: 18.0%

Over Alarm: 40.0%

Alarm Types:

Gas Alarms: Two-stage alarm and over-range alarm

Fault Alarms: Sensor disconnection/break, low battery voltage, calibration error, system abnormality

Alarm Method: Latching

Alarm Operation:

For gas alarm: Flashing lamp, buzzer with alternating tones, blinking gas concentration value, vibration

For fault alarm: Flashing lamp, continuous pulsing buzzer, fault information display

Display: LCD with 7-segment gas concentration display + gas name + status information display

Operating Temperature Range: -20 to +50°C (no sudden changes)

Operating Humidity Range: 10 to 95%RH (non-condensing)

Operating Pressure Range: Atmospheric pressure (80 to 110 kPa)

Power Supply: Two AA alkaline batteries

Continuous Operating Time: Approx. 20,000 hours (with new batteries, at 25°C, no alarm, no backlight)

Response Time: Within 20 seconds for 90% response (at 20°C ±2°C)

Explosion-Proof Structure: Intrinsically safe explosion-proof (Explosion grade: Ex ia IIC T4 Ga)

Dimensions: Approx. 68 (W) × 150 (H) × 49 (D) mm (excluding protrusions)

Weight: Approx. 290g (including batteries)

Functions: Manual LCD backlight (automatic during alarm), peak value display