Copyright HK Instruments 2017
www.hkinstruments.fi
Installation version 5.0 2017
INSTALLATION
INSTRUCTIONS
CARBON DIOXIDE TRANSMITTERS
CDT2000 Duct Series
• READ THESE INSTRUCTIONS CAREFULLY BEFORE
ATTEMPTING TO INSTALL, OPERATE OR SERVICE THIS
DEVICE.
• Failure to observe safety information and comply with
instructions can result in PERSONAL INJURY, DEATH AND/OR
PROPERTY DAMAGE.
• To avoid electrical shock or damage to equipment, disconnect
power before installing or servicing and use only wiring with
insulation rated for full device operating voltage.
• To avoid potential fire and/or explosion do not use in potentially
flammable or explosive atmospheres.
• Retain these instructions for future reference.
• This product, when installed, will be part of an engineered
system whose specifications and performance characteristics
are not designed or controlled by HK Instruments. Review
applications and national and local codes to assure that the
installation will be functional and safe. Use only experienced and
knowledgeable technicians to install this device.
SPECIFICATIONS
Thank you for choosing an HK Instruments CDT2000 Duct series
carbon dioxide transmitter. The CDT2000 Duct series is intended
for use in commercial environments in HVAC/R applications.
The CDT2000 Duct series measures carbon dioxide (CO
2
), utilizing
the industry standard NDIR measurement principle, and tempera
-
ture (T). Illuminated display ensures easy readability also from a dis
-
tance. The CDT2000 Duct has a screwless lid and an easily adjust
-
able mounting flange that make the installation of the device easy.
The CDT2000 Duct series transmitters calibrate themselves auto
-
matically using ABC
TM
logic. The ABC
TM
logic requires that the space
in which the transmitter is used needs to to be unoccupied for four
hours per day so that the indoor CO
2
concentration drops to the
outside level. CDT2000-DC Duct is a dual channel model with a
measuring channel and a reference channel that makes a continuous
comparison and the necessary adjustment accordingly. CDT2000-
DC Duct is also suitable for buildings that are continuously occupied.
CDT2000 Duct series devices are commonly used to monitor:
• CO
2
levels of incoming and return air in ventilation system
• CDT2000-DC Duct series devices can also be used in applications
where there is a constant source of carbon dioxide present (for
example hospitals and greenhouses)
SPECIFICATIONS
Performance
Measurement ranges:
CO
2
: 400–2000 ppm
Temperature: 0...50 °
°F
32...122
/
C
Accuracy:
CO
2
: ±40 ppm + 2 % of reading, DC model: 75 ppm or
10 % of reading (whichever is greater)
Temperature: <0.5 º
°F
<0.9
/
C
Technical Specifications
Media compatibility:
Dry air or non-aggressive gases
Measuring units:
ppm and °C
Measuring element:
CO
2
: Non-dispersive infrared (NDIR)
Temperature: NTC10K
Calibration:
Automatic self-calibration ABC Logic
TM
or continuous
comparison (DC)
Environment:
Operating temperature: 0...50 °
°F
32...122
/
C
Storage temperature: -20...70 °
°F
-4...158
/
C
Humidity: 0 to 95 % rH, non condensing
Physical
Dimensions:
Case: 119 x 100 x 44.7 m
1.76"
x
3.94
x
4.69
/
m
Probe: L=188 mm, d=12 m
d=0.47"
7.40",
L=
/
m
Mounting:
With flange, adjustable 0...188 mm
0...7.40"
/
Weight:
150
oz
5.30
/
g
Materials:
Case: ABS
Cover: PC
Probe: ABS
Protection standard:
IP54
Electrical connections:
4 spring loaded terminals
(24 V, GND, CO
2
, T)
0.2–1.5 mm
2
(12–24 AWG)
Electrical
Supply voltage: 24 VAC or VDC ±10 %
Current consumption: max 230 mA (at 24 V) + 10 mA
for each voltage output
Output signals for every media:
0/2...5/10 VDC, Load R minimum 1 kΩ
Conformance
Meets requirements for CE marking:
EMC Directive 2014/30/EU
RoHS Directive 2011/65/EU
WEEE Directive 2012/19/EU
INTRODUCTION
APPLICATIONS
WARNING
COMPANY WITH
MANAGEMENT SYSTEM
CERTIFIED BY DNV GL
= ISO 9001 = ISO 14001 =
RoHS 2
2011/65/EU
