Vaisala GMP252 CO₂ Probe


  • Measurement range 0 … 10 000 ppm CO2.
  • Intelligent, stand-alone probe with analog and digital outputs.
  • Compatible with Indigo transmitters and Insight PC software.
  • Wide operating temperature range, −40 … +60 °C (−40 … +140 °F).
  • IP65-classified housing.
  • Integrated temperature measurement for CO2 compensation purposes.
  • Compensations also for pressure, oxygen, and humidity.
  • Sensor head heated to prevent condensation.

Dpstar is a leading supplier of environmental measurement sensors for temperature, relative humidity, pressure, dew point, CO2, and other environmental condition monitoring for industrial process application and research. Since the ’90s, we earned a reputation as a trusted partner to our clients through our commitment and dedication. We are an authorized distributor and supplier of measuring sensors solutions from renowned manufacturers Vaisala. Vaisala is a global leader in environmental and industrial measurement. Building on 80 years of experience, Vaisala provides observations for a better world. Vaisala is a reliable partner for customers around the world, offering a comprehensive range of innovative observation and measurement products and services.

Vaisala CARBOCAP Carbon Dioxide Probe GMP252 is a smart, standalone probe that measures CO2 at ppm levels. It’s designed for various industries such as agriculture, refrigeration, greenhouses, HVAC, and plant growth chambers. It works well in tough and humid CO2 environments, providing stable and accurate measurements. Vaisala GMP252 operates in temperatures from -40 to +60 °C and measures CO2 levels from 0 to 10,000 ppm. It can even measure up to 30,000 ppm with slightly reduced accuracy. Additionally, it can be placed in the Vaisala Radiation Shield DTR250 to measure outdoor CO2 levels dynamically. Vaisala GMP252 probe is part of the Indigo product family and can also be connected to the Indigo500 and Indigo200 series transmitters to extend its features, for example, for a display or relays. Vaisala GMP252 can also be used with with the free Insight PC Software. For spot-checking, the ideal choice is the Handheld CO2 Meter Vaisala GM70. Vaisala GMP252 replaces the following discontinued products: Vaisala GMM222 and Vaisala GMT222.


Key Benefits

Easy To Use & Clean

Vaisala GMP252 is a all-in-one probe, which makes it easy and fast to install. The probe is resistant to dust and most chemicals, such as, H2O2 and alcohol-based cleaning agents. The probe’s surface is smooth, which makes it easy to clean.

Reliable & Accurate

With the wide operating temperature range, Vaisala GMP252 is suitable for a large number of applications. The probe provides accurate and stable measurements also in varying conditions.


Vaisala GMP252 CO₂ Probe_DpstarGroup