The GM70 is a portable CO2 meter produced by Vaisala. It is small, light, easy to operate, accurate in measurement, and can be widely used in industry, agriculture and environmental protection.
The GM70 is a handheld CO₂ meter that measures gas concentration in ppm or percent and displays the values on a digital screen. It supports both diffusion and pump‑suction measurement methods and offers optional analog voltage output and Windows software for data handling.
The manual provides step‑by‑step guidance on initial setup, language and time configuration, operation of buttons and menus, analog output selection, data recording, field checks, probe calibration, and technical specifications such as measurement range and dimensions. This manual is written in Japanese.
| Measurement range | 0‑2000 ppm or 0‑20 % |
|---|---|
| Analog output voltage | 0‑10 V |
Select the desired language from the Display Language menu (see page 19).
Use the Date and Time setting option in the user interface to configure both values.
The GM70 can measure CO₂ from 0 ppm up to 2000 ppm, or 0 % to 20 %.