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Vaisala’s New Indigo CO2 Probes Stand alone CO2 measurement
probes
ppm level measurements up to 10 000 ppmCO2
% level measurements up to 20 %CO2
2017-02-08 AHR Expo: New CO2 Probes and Indigo 2002
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Vaisala’s New Indigo Hosts
2017-02-08 AHR Expo: New CO2 Probes and Indigo 2003
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The CARBOCAP® Technology Optical, infra-red measurement technology Single-beam, dual-wavelength NDIR technology
The amount of infrared light passing through the gas is measured at two discrete wavelengths: the absorption wavelength (4.3 µm), where CO2 absorbs strongly the reference wavelength (3.9 µm), where CO2 has no absorption
2017-02-08 AHR Expo: New CO2 Probes and Indigo 2004
Vaisala CARBOCAP® sensorOne IR source, one tunable filter CO2 and reference wavelengths = true referencing!
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2nd-Generation CARBOCAP® TechnologyMiniature filament light bulb replaced with a
microglow – a micromechanical component manufactured by Vaisala Compared to a filament lamp it has: Longer lifetime: >15 years Low power consumption Stable light output Fast response at startup Single-beam, dual-wavelength NDIR measurement
technology in a compact structure
2017-02-08 AHR Expo: New CO2 Probes and Indigo 2005
Schematic of the GMP252 sensor operating principle
2017-02-08 AHR Expo: New CO2 Probes and Indigo 2006
CARBOCAP® technology with continuous internal referencing1. Reliability
– Only one light source and one detector - and a tunable filter - needed
2. Stability– Tunable filter enables measuring continuously a CO2
signal and a reference signal – ensures a stable measurement in all conditions
3. Tolerates harsh environments– Due to internal referencing minimal maintenance in harsh
environments is needed
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Indigo 201 and CO2Probes
2017-02-08 AHR Expo: New CO2 Probes and Indigo 2007
Display and non-display versions Probe directly attached or with remote cable Supports one probe, detachable without
opening cover Plastic, IP65 classified housingOperating temperature -40 ... +140 °F, with
display -4...+140 °F Analog outputs (mA and V), 2 relaysWireless configuration interface for easy
access
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Wireless Configuration Interface Easy access with any device
with a WLAN connection and a browser – typically a mobile phone, tablet or a laptop Temporary viewing of
measurement data in numeric and graph views Changing the settings of Indigo
201 and attached probe
2017-02-08 AHR Expo: New CO2 Probes and Indigo 2008