Riken Keiki GW-3, Руководство по эксплуатации

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2. Important Safety Information 2-2. Warning information
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2-2. Warning information
WARNING
Fresh air adjustment in the atmosphere

When air calibration is performed in the atmosphere, check the atmosphere for freshness before starting.
The presence of interference gases will prevent proper air calibration. The presence of interference gases is
also extremely dangerous because the product may not detect actual gas leaks correctly.
Battery level check

Check battery levels before using the product. The battery may become depleted if not used for extended
periods.
Always replace with a new battery before use.
The battery types are as follows:
・
Japan models: One CR2450 (Murata)
・
Export models: One CR2450 (Murata), CR2450B (Sony), or DL2450 (Duracell)

If a low battery voltage alarm occurs, gas cannot be detected. If a low battery voltage alarm occurs during
use, turn off the power and replace the battery.
Handling the calibration gas

The calibration gas is nitrogen and a toxic gas. Inhaling the gas may lead to loss of health or even death.
When using calibration gas, discharge outside, perform calibration in a well-ventilated area, or use local
ventilation equipment.

For calibration, use a standard gas consisting of the detection target gas diluted with nitrogen or air.
Calibration can be performed with a gas mixture that includes other components; however, such calibrations
will result in poor sensitivity and inaccurate concentration readings.