ENGLISH
DPDQ 402000
DPDQ 402000
including mounting flange
APPLICATION:
Patented quality product (patent no. DE 10 2014 010 719.1)
The maintenance-free, microprocessor-controlled duct CO
2
sensor is designed for duct installation
and is used to detect the CO
2
content of the air. The measurement signals are converted to standard
signals of 0 -10 V or 4...20 mA.
The CO
2
content of the air is measured using an optical NDIR sensor (non-dispersive infra-red technology).
The detection range of the CO
2
sensor is calibrated for standard applications such as monitoring residen-
tial rooms and conference rooms. Room ventilation on an as-needed basis, improved well-being and
customer benefit, increased comfort as well as reduced operating costs through energy conservation are
just some of the benefits of employing CO
2
sensors.
A measuring system based on NDIR (non-dispersive infra-red technology) for CO
2
measurement consists
of a light source and a receptor. A certain range of wavelengths of light radiated by the source is damped
and absorbed by CO
2
molecules in the measured section. This damping is detected by the receptor.
TECHNICAL DATA:
Power supply:
24 V AC ⁄ DC (± 10 %)
Power consumption:
< 1.5 W ⁄ 24 V DC typical; < 2.9 VA ⁄ 24 V AC typical;
Peak current 200 mA
Sensor, CO
2
:
optical NDIR sensor (non-dispersive infra-red technology)
with automatic and manual calibration
Measuring range, CO
2
:
Multi-range switching
(selectable via DIP switches)
0...2000 ppm; 0...5000 ppm
Output, CO
2
:
0 -10 V
or
4...20 mA
(selectable via DIP switches)
1 changeover contact (24 V / 1 A)
switchpoint adjustable
Measuring accuracy, CO
2
:
± 30 ppm ± 3 % of measured value
Temperature dependence, CO
2
: ± 5 ppm ⁄ °C or
± 0.5 % of measured value ⁄ °C
(whichever is higher)
Pressure dependence:
± 0.13 % ⁄ mm Hg
Long-term stability:
< 2 % in 15 years
Gas exchange:
by diffusion
Warm up time:
approx. 1 hour
Ambient temperature:
–10...+60 °C
Response time:
approx. 1 minute
Electrical connection:
0.14 - 1.5 mm
2
, via screw terminals
Enclosure:
plastic, UV-stabilised, material polyamide, 30 % glass-globe reinforced,
with quick-locking screws (slotted ⁄ Phillips head combination),
colour traffic white (similar to RAL 9016)
Enclosure dimensions:
72 x 64 x 37.8 mm
Cable gland:
M 16 x 1.5; including strain relief, exchangeable,
max. inner diameter 10.4 mm
Protective tube:
PLEUROFORM
TM
, material polyamide (PA6), with torsion protection,
Ø 20 mm, NL = 202.5 mm, v
max
= 30 m/s (air)
Process connection:
via flange made of plastic (included in scope of delivery)
Protection class:
III (according to EN 60 730)
Protection type:
IP 65 (according to EN 60 529) enclosure only !
Standards:
CE conformity,
electromagnetic compatibility according to EN 61 326,
EMC Directive 2014 ⁄ 30 ⁄ EU
DIP switches
DPDQ 402000
CO
2
content
DIP 1
0...2000 ppm (default)
OFF
0...5000 ppm
O N
CO
2
automatic zero point
DIP 3
deactivated
OFF
activated (default)
O N
Output
DIP 4
Voltage 0 -10 V (default)
OFF
Current 4...20 mA
O N
Note:
DIP 2
is not assigned!
