Vaisala GMM111 Technical data

GMM111 Carbon Dioxide Module

www.vaisala.com

The Vaisala CARBOCAP® Carbon Dioxide Module GMM111 is a CO2 measurement module with flow-through aspiration.

Features/Beneﬁts

Compact CO2 module with

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ﬂow-through aspiration

Ideal for control of CO2

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concentrations in incubators

Incorporates Vaisala

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CARBOCAP®, the silicon based NDIR sensor with unique internal referencing

Advanced single-beam, dual

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wavelength measurement with no moving parts

Measurement range options

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0 ... 5 %, 0 ... 10 % and 0 ... 20 % CO

Excellent long-term stability

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GMM111

The Vaisala CARBOCAP® Carbon Dioxide Module GMM111 is designed especially for control of biological processes where high CO

concentrations are used. It has

3 optional measurement ranges 0 ... 5/10/20 % CO ow-trough model and has barbed connectors for attaching the in and out ow tubes. As the module is not mounted in the chamber, the chamber can be heatsterilized without removing the module.

The Vaisala CARBOCAP sensors have been proven to be accurate anddurable. They have an excellent long-term stability, which decreases maintenance. The superior performance of Vaisala

. The GMM11 is a

CO2

CARBOCAP from the stable reference provided by the electrically tunable Fabry-Perot Interferometer(FPI).

The tunable FPI lter measures CO absorption, and simultaneously a reference wavelength. This internal reference measurement compensates effectively for any changes in the optical path, such as light source intensity changes and contamination. In the HVAC market, this type of reference measurement is a unique feature to Vaisala CARBOCAP products.

The true internal reference measurement of Vaisala CARBOCAP CO

transmitters provides years of

stable CO

sensors results largely

measurements.

Technical data

TUBE I.D. Ø4

(TUBE O.D. Ø6)

V 0 B A 0

24V

V 0 B A 0

24V

65 6

Ø3.2

Performance

CO2 measurement range 0 ... 5 %, 0 ... 10 % or 0 ... 20 % Accuracy (including repeatability, non-linearity and calibration uncertainty) ±(1.5% of range + 3 % of reading) Long-term stability ±1 % CO Response time T

1 min at 0.5 l/min ﬂow

/2 years

Flow rate dependence

< 1 l/min ﬂow no effect

1 ... 10 l/min ﬂow 4 % of reading/ l/min Temperature dependence, typical -0.3 % of reading/°C Pressure dependence, typical +0.15 % of reading/hPa Warm-up time 1 min, 10 min for full

speciﬁcations

Product lifetime

> 10 years

Operating environment

Temperature +5 ... +55 °C (+41 ... +131 °F) Humidity 0 ... 99 % RH non-condensing Pressure 700 ... 1200 hPa Gas ﬂow

operating range < 10 l/min

recommended range 0.2 ... 0.8 l/min Electromagnetic compatibility

Complies with EMS Standard EN61326-1, Generic Environment

Dimensions

Dimensions in mm

Inputs and outputs

Outputs 4 ... 20 mA, 0 ... 10 V

RS485, 2-wire, non-isolated Operating voltage 24 V (±20 %) AC/DC Power consumption <2 W

For more information, visit www.vaisala.com or contact us at sales@vaisala.com

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