Indigo 202 transmitter with CO2 probe, Display, Modbus, Relays - Vaisala Online Store

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Indigo 202 transmitter with CO2 probe, Display, Modbus, Relays

The Indigo 202 is a transmitter with digital Modbus communications. It is a host device for Indigo compatible probes. A display and two relays are available.

Probes can be connected directly or with a remote cable (available as accessories) to the Indigo 202. User configuration and temporary viewing of data is easy and convenient with a wireless browser-based user interface.

The GMP251 and GMP252 are intelligent probes. They are ideal for measuring carbon dioxide in agriculture, refrigeration, greenhouses and demanding HVAC applications. They are suitable for harsh and humid CO2 measurement environments where stable and accurate CO2 measurements are needed.

These probes are based on Vaisala’s unique, second-generation CARBOCAP® technology that enables exceptional stability. The measurement range is:

  • GMP252: 0 ... 20000 ppmCO2
  • GMP251: 0 ... 20%CO2

See all Indigo probes
See all Indigo Transmitter bodies

The package includes:

  • GMP251 or GMP252 probe
  • Indigo 202 transmitter

Note that probe and transmitter may be shipped separately.

Watch the video to learn more about the Indigo 200 Series host device:

Indigo 202 transmitter with CO2 probe, Display, Modbus, Relays
Indigo 202 transmitter with CO2 probe GMP252 for agriculture, refrigeration, greenhouses and demanding HVAC applications.
Standard delivery time for single unit: 1 week
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Warranty: 24 months
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Detailed information

Measurement parameter(s)Carbon dioxide
Measurement rangeGMP251: 0 ... 20 %CO2
GMP252: 0 ... 20000 ppmCO2
Measurement accuracyat 25 °C and 1013 hPa:
GMP251:
at 5% CO2 ±0.1%CO2
at 0 ...8% CO2 ±0.2%CO2
at 8 ...20% CO2 ±0.4%CO2
GMP252:
0 ... 3000 ppmCO2 ±40 ppmCO2
3000 ... 10 000 ppmCO2 ±2% of reading
Up to 30 000 ppmCO2 ±3.5% of reading
Operating temperature-40 ... +60 °C
Operating voltage24 VDC
Digital outputsModbus RTU over RS485
Housing classificationIP65
Links See full specifications on Vaisala.com
Download user guides and other product documents on Vaisala.com


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