CO₂ Probe GMP251

The Vaisala CARBOCAP® Carbon Dioxide Probe GMP251 is an intelligent, stand-alone, %-level probe for measuring CO2 in life science incubators, cold storages, fruit and vegetable transportation, and in all demanding applications where stable and accurate percentage-level CO2 measurements are needed. The operating temperature range is -40 … +60 °C and the measurement range is 0 … 20%CO2.

The GMP251 probe is part of the Indigo product family and can also be connected to the Indigo 200 Series transmitters to extend its features, for example, for a display or relays.

For spot-checking, the ideal choice is the Handheld CO2 Meter GM70.

The GMP251 replaces the following discontinued products: GMM221 and GMT221. Please note that spare parts and accessories for the GMP221 probe are still available and can be purchased in the Vaisala online store.

See the video below for an introduction.

Measurement range 0 … 20 %CO2

Intelligent, stand-alone probe with analog (V, mA) and digital (RS485) outputs

Superior long-term stability with the 2nd-gen proprietary CARBOCAP® technology

Wide operating temperature range -40 … +60 °C

IP65 classified housing

Full temperature and pressure compensations

Integrated temperature measurement for CO2 compensation purposes

Compensations for background gases, O2, and humidity

 Sensor head heated to prevent condensation