Vaisala HUMICAP MMT310 Manual de servicio Pagina 100

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98
GMT220 Series Carbon Dioxide Transmitters
for Industrial Applications
The Vaisala CARBOCAP
®
Carbon
Dioxide Transmitter Series GMT220 is
designed to measure carbon dioxide
in harsh and humid environments.
The housing is dust- and waterproof
to IP65 standards.
The GMT220 series transmitters
incorporate the advanced Vaisala
CARBOCAP
®
Sensor. The patented
sensor has unique reference
measurement capabilities. Its critical
parts are made of silicon; this gives
the sensor outstanding stability
over both time and temperature. By
lengthening the calibration intervals,
the user saves both time and money.
Interchangeable probes
The user has a choice of
measurement ranges up to 20%
of CO
2
. The GMT221 is for higher
concentrations of CO
2
and the
The GMT220 transmitters withstand harsh and humid environments.
Features/Benefi ts
Incorporates Vaisala
CARBOCAP® - the silicon-
based NDIR sensor
IP65 protected against dust
and spray water
Several measurement ranges
Easy installation
Standard analog outputs
and two confi gurable relays
available
Applications include:
Horticulture and fruit storage
Greenhouses and mushroom
farming
Safety alarming and leakage
monitoring
Demand controlled ventilation
in harsh environments
GMT222 for lower concentrations
of CO
2
. The GMT220 probes are
interchangeable. They can be
removed and reattached or replaced
at any time – without the need for
calibration and adjustment. The
probes can be attached directly to
the transmitter body or, when used
with a cable, installed remotely into
hard-to-reach places or areas with
dangerously high levels of CO
2
.
The interchangeability of the GMT220
transmitter’s probes truly facilitates
eld maintenance.
The end user can carry out  eld
maintenance without any additional
equipment or heavy and expensive
calibration gas bottles by simply
replacing a probe.
Probes that have been replaced can
be sent to Vaisala for recalibration.
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