An ultra-compact, intrinsically safe oxygen detector weighing only 110g. It can be clipped to a pocket or belt for continuous personal protection, or the sensor can be detached and lowered into a confined space using its 5-meter cord to check oxygen levels before a worker enters.
The GOA-7H-S utilizes a Galvanic Cell sensor (Model O2-204G). This sensor reacts chemically with oxygen to produce an electrical current. Because it is a “diffusion” style sensor, it monitors the air naturally passing over the sensor face. The device is optimized for extreme battery efficiency, running for approximately 4,000 hours (nearly 6 months of 24/7 use) on a single AAA alkaline battery.
Although, technology is always evolving, one demand on our products never changes: the demand for customer safety. Whenever we contribute to customer safety, we are presented with an opportunity to develop further.
GASTEC holds this corporate creed of safety and development in high esteem, as it strives to grow while always putting customer safety first.
| Feature | Specification |
| Measurement Range | 0.0 – 25.0% (Service range up to 42.0%) |
| Measurement Principle | Galvanic Cell (Sensor O2-204G) |
| Alarm Threshold | < 18.0% (Oxygen Deficiency) |
| Response Time ($T_{90}$) | Within 15 seconds (at 20°C) |
| Operating Temp | -10°C to +40°C |
| Battery Life | ~4,000 hours (1x AAA battery) |
| Weight | ~110g (including battery/sensor) |
| Dimensions | 48(W) x 105(H) x 37(D) mm |
