GMP343 CO₂ probe

User 's Manual

Designed for demanding measurements, the GMP343 carbon dioxide probe is an accurate and robust probe type instrument for ecological measurements. Typical applications include carbon monoxide 2 soil respiration, environmental carbon monoxide monitoring, plant growth chambers, and OEM applications. GMP343 uses single-beam, dual-wavelength CO₂ measurement without moving parts. The GMP343 outputs digital filtering and raw measurements, and can also compensate measurements with internal temperature measurements and user-set relative humidity, pressure, and oxygen values. Combined with the hand-held GM70, the GMP343 provides a tool for accurate in-situ measurements. The GM70 can be used as a display, communication and data recording device.

Excellent accuracy and stability

Visala CARBOCAP® sensor, silicon based non-dispersive infrared (NDIR) sensor

Single beam, dual wavelength CO₂ measurement, no moving parts

Temperature, pressure, humidity and oxygen compensation options

Wide operating temperature and humidity range

Diffusion and circulation models

Suitable for harsh environment

Main Advantages:

Low operating cost:

GMP343 is a compact, lightweight but sturdy diffused aspirated or circulation CO₂ probe with low power consumption and heat dissipation. It is designed for harsh environments, especially outdoor environments, to reduce operating costs.

Stable and reliable:

GMP343 has good stability in both time and temperature, and it also has good stability in flow.