The GMP343 is available as an open path, diffusion aspirated model (left) and as a flowthrough
model (right).
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| Carbon Dioxide Probe for Demanding Measurements |
| model GMP343 |
The GMP343 is available as an open path, diffusion aspirated model (left) and as a flowthrough model (right). |
|
| Features/Benefits |
• Excellent accuracy and stability • Vaisala CARBOCAP® Sensor, a silicon-based non-dispersive infrared (NDIR) sensor • A single-beam, dual-wavelength CO2 measurement with no moving parts • Compensation options for temperature, pressure, humidity and oxygen • Low power consumption and heat emission • Designed for outdoor use • Compact and lightweight |
| The Vaisala CARBOCAP® Carbon
Dioxide Probe GMP343 is an accurate
and rugged probe-type instrument
for ecological measurements. Typical
applications include: • CO2 soil respiration • Ambient CO2 monitoring • Plant growth chambers • OEM applications |
| Open path, diffusion aspirated probe |
The product concept eliminates the
need for bulky and power-consuming
gas sampling systems. The power
consumption of the GMP343 itself is
low, even below 1 W. |
| Novel solution for soil respiration measurements |
The use of diffusion aspiration
eliminates the measurement error
caused by pressure differences
often present in pump-aspirated
measurement systems. |
| Rugged metal structure |
The body of the GMP343 is IP67-
classified and suitable for harsh
environments. The sensor’s diffusion
filter protects it from dust and dirt.
Heated optics prevent the formation of
condensation. |
| User-configurable measurement |
The GMP343 can output both
numerically filtered and raw
measurement data. The instrument
can also compensate the measurement
with an internal temperature
measurement and user-set relative
humidity, pressure and oxygen values. |
| MI70 |
In combination with an MI70 indicator,
the GMP343 provides an ideal tool
for accurate in-situ measurement.
The MI70 is used as a display,
communication, and data-login
device. To achieve most accurate
measurements, a Vaisala HMP75
humidity probe can be connected
to the MI70 indicator for automatic
humidity compensation. In that case
a manual compensation is not needed.
The optional MI70 Link Windows® software allows transferring logged and real-time data of the GMP343 from
the MI70 to a PC. |
| Calibration |
Each GMP343 is calibrated using ±0.5 %
accurate gases at 0 ppm, 200 ppm, 370
ppm, 600 ppm, 1000 ppm, 4000 ppm
and 2 %. Calibration is also done at
four temperature points, -30 °C, 0 °C, 25 °C and 50 °C. If needed, the customer
can recalibrate the instrument using
the multipoint calibration (MPC)
feature allowing up to 8 user-defined
calibration points. With the optional mounting flange, the
GMP343 can for example be installed
directly into a soil respiration box.
The diffusion-aspirated probe eliminates
sampling systems and errors related to
pressure differences caused by pumps. |
|
 |
With the optional mounting flange, the
GMP343 can for example be installed
directly into a soil respiration box.
The diffusion-aspirated probe eliminates
sampling systems and errors related to |
| Technical Data |
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