Vaisala | CARBOCAP GMT220 SERIES | CEN Global GMT220 Datasheet B210827EN-C

www.vaisala.com
GMT220 Series Carbon Dioxide Transmitters
for Industrial Applications
The GMT220 transmitters withstand harsh and humid environments.
Features/Benefits
▪
Incorporates Vaisala
CARBOCAP® - the siliconbased NDIR sensor
▪
IP65 protected against dust
and spray water
▪
▪
▪
Several measurement ranges
Easy installation
Standard analog outputs
and two configurable relays
available
Applications include:
▪
▪
Horticulture and fruit storage
▪
Safety alarming and leakage
monitoring
▪
Demand controlled ventilation
in harsh environments
Greenhouses and mushroom
farming
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 CO2. The GMT221 is for higher
concentrations of CO2 and the
GMT222 for lower concentrations
of CO2. 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 CO2.
The interchangeability of the GMT220
transmitter’s probes truly facilitates
field maintenance.
The end user can carry out field
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.
Technical Data
Performance
Operating Environment
Measurement Ranges
GMT221
for high concentrations
0 ... 2 %
0 ... 3 %
0 ... 5 %
0 ... 10 %
0 ... 20 %
0 ... 2000 ppm
0 ... 3000 ppm
0 ... 5000 ppm
0 ... 7000 ppm
0 ... 10 000 ppm
Accuracy (including repeatability, non-linearity and
calibration uncertainty) at 25 °C and 1013 hPa
GMT221
±(1.5 % of range + 2 % of reading)
(applies for concentrations above 2 % of full scale)
GMT222
±(1.5 % of range + 2 % of reading)
Temperature dependence, typical
-0.3 % of reading / °C
Pressure dependence, typical
+0.15 % of reading/hPa
Long-term stability
<±5 %FS/2 years
Response time (63 %)
GMT221
20 seconds
GMT222
30 seconds
Warm-up time
30 seconds, 15 minutes full specifications
Inputs and Outputs
Outputs
Resolution of analog outputs
Recommended external load:
current output
voltage output
Two pre-or user-defined relay
outputs
Relay contacts
Connections
Operating voltage
Power consumption
0 ... 20 or 4 ... 20 mA
and 0 ... 10 V
12 bits
max. 400 Ohm
min. 1 kOhm
Mechanics
Housing material
transmitter body
probe
Housing classification
Weight:
GMT221
GMT222
Probe cable length
max. 280 g
max. 300 g
2 m and 10 m (optional)
Spare probe
GMP221, GMP222
(use the order form to define measurement range etc.)
Clips (2 pcs) for attaching the probe
25245GM
Mounting flange for the probe
GM45156
Probe cables
2m
25665GMSP
10 m
210848GMSP
Calibrator for interchangeable probes
GMK220
Wall Assembly Plate
GM45160
In-soil adapter for probe
211921GM
Serial COM adapter
19040GM
Calibration adapter for probe
26150GM
Dimensions
Dimensions in mm (inches)
.25
31.8 (1
max. 30VAC/60VDC, 0.5A
screw terminals, 0.5 ... 1.5 mm2
nominal 24 VAC/DC
<4 W
ABS plastic
PC plastic
IP65
Accessories
)
10
9
(4
.29
)
∅1
119 (4.69)
GMT222
for low concentrations
Operating temperature
-20 ... +60 °C (-4 ... +140 °F)
with display
0 ... +50 °C (+32 ... +122 °F)
Storage temperature
-30 ... +70 °C (-22 ... +158 °F)
Operating pressure (compensated range)
700 ... 1300 hPa
Humidity
0 ... 100 %RH, non-condensing
Electromagnetic compatibility
EN61326-1, Generic Environment
8.5
(0
.73
)
GMP221 probe
15
5
(6
.10
2)
∅1
119
(4.6
(0
.73
)
9)
GMT220 transmitter
For more information, visit
www.vaisala.com or contact
us at sales@vaisala.com
8.5
GMP222 probe
Ref. B210827EN-C ©Vaisala 2011
This material is subject to copyright protection, with all
copyrights retained by Vaisala and its individual partners. All
rights reserved. Any logos and/or product names are trademarks
of Vaisala or its individual partners. The reproduction, transfer,
distribution or storage of information contained in this brochure
in any form without the prior written consent of Vaisala is strictly
prohibited. All specifications — technical included — are subject
to change without notice.
GMT221 and GMT222 CO 2 Transmitters
1
3
4
5
6
7
8
9
10
TRANSMITTER UNIT
PROBE
2
1
Vaisala CARBOCAP® CO2 Transmitter
GM T 22
Vaisala CARBOCAP® CO2 Transmitter
Measurement range
0…2 %CO2
1
(GMT221)
0...3 %CO2
1
0...5 %CO2
1
0...10 %CO2
1
0...20 %CO2
1
(GMT222)
0…2000 ppmCO2 adjusted at 1000 ppm (*
2
0…2000 ppmCO2
2
0...3000 ppmCO2
2
0...5000 ppmCO2
2
0…7000 ppmCO2
2
0…10000 ppmCO2
2
Standard setting (25 °C)
Temperature compensation
Special setting (37 °C)
Probe installation
none
accessories
mounting clips, 2 pcs
(25245GMSP)
mounting flange
(GM45156SP)
Field check
none
adapter
(26150GM)
adapter
Display on cover
LED lights only
LED lights + backlit digital LCD display
Place holder for future option, not available at this time
probe in transmitter (wall model)
Wall/remote use
probe with 2 m cable (remote installation of probe)
probe with 10 m cable (remote installation of probe)
Alarm relay 1
setpoint not activated
custom setpoint for relay 1______ ppm / % CO2
2
3
4
5
6
0
7
8
9
10
11 12
0
PRICE
$840
H
J
K
L
M
B
C
D
E
F
G
0
1
N
A
B
$20
$50
0
1
$70
A
B
$120
0
N
(25665GMSP) A
(210848GMSP) C
$80
$100
1
X
Example: custom setpoint for relay 1 1000 ppm CO2
-> Relay will be activated above 1000 ppm CO 2
Alarm relay 2
A
X
setpoint not activated
custom setpoint for relay 2______ ppm / % CO2
Example: custom setpoint for relay 2 4% CO2
-> Relay will be activated above 4% CO 2
11
12
Accessories
Manual
no accessories
Serial COM adapter
no manual
English
(19040GM)
0
1
$100
A
B
TOTAL
QTY
TOTAL VALUE
(* special accuracy specification
Selections in bold are included in the prices of the basic versions.
Selections in italic are available at an extra price.
Examples of order codes with typical settings:
GM T 22 1 L 0 N 0 B 0 N 1 A 0 B
Accessories and Spare Parts:
Description:
In-soil adapter kit
Goretex membrane spare filter
plus cap for GMP221
Goretex membrane spare filter
plus cap for GMP222
Calibration Kit for interchangeable probes
Order Code:
211921GM
PRICE
$60
25378GMSP
$50
25879GMSP
GMK220
$50
$1,600
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