GMP251 CO2 Probe for %-Level Measurements, Voltage output, Current loop, Modbus

The Vaisala CARBOCAP^® Carbon Dioxide Probe GMP251 is an intelligent, stand-alone probe for measuring carbon dioxide in life science incubators, cold storages, fruit and vegetable transportation,and in all demanding applications where stable and accurate %-level CO₂ measurements are needed.This configuration is optimized for an independent use/integration, please see another configuration optimized for Indigo display here.

The GMP251 is based on Vaisala’s unique,second-generation CARBOCAP^® technology that enables exceptional stability. A new type of infrared (IR) light source is used instead of the traditional incandescent light bulb, which extends the lifetime of the GMP251.

The GMP251 incorporates an internal temperature sensor for compensation of the CO₂ measurement according to ambient temperature. The effects of pressure and background gas can also be compensated for. The measurement range is 0 ... 20 %CO₂ and the sensor performance is optimized at 5 %CO₂ measurement.

The operating temperature range of the probe is wide (-40…+60 °) and the probe housing is classified as IP65.Condensation is prevented as the internal sensor head is heated.

The GMP251 is resistant to dust and most chemicals, such as, H₂O₂ and alcohol-based cleaning agents.

The GMP251 replaces the following discontinued products:GMM221, GMP221, GMT221.

Please note that spare parts for the GMP221 probe are still available and can be purchased in the Vaisala online store.

The package includes:

• GMP251 probe