Asense CO2 Duct Sensor
Installation and Operation
#NSA-ASENSE-D-LCD-REL, NSA-ASENSE-D-REL
– 11/14/2019
Specifications subject to change without notice.
Catalog No. 11-808-745-01
Page
1
of
9
Overview
The ASENSE Duct series with IP65 Rated Enclosure monitors the carbon dioxide (CO2) levels
in industrial, commercial, school, and office type environments. The concentration of CO2 is a
strong indication of the overall indoor air quality. The ASENSE Series is based on a single beam
non-dispersive infrared technology and is a cost-optimized solution for the climate control of
buildings and other processes. In addition, ABC software eliminates the need for manual
calibration. The ASENSE Series measures the CO2 concentration in the ambient air up to 2,000
ppm and converts the data into an analog output. This data can be used in conjunction with a
Building Automation or Demand Control Ventilation System to create a healthier indoor climate.
This series features an analog temperature output (32 to 122°F) and come with combined
output options of 0-10 VDC and 0 to 20 mA (4 to 20 mA and 2-10 VDC are field selectable via
an onboard jumper) or 0-
5 VDC for “-5” versions. A relay option is available for this series as
well. The UIP5 software and programming cable offer a configuration/test utility and provide
access to the main features of the ASENSE series.
Applications
: Commercial Office Buildings, Hospitals & Schools
Part Numbers
NSA-ASENSE-D-LCD-REL
NSA-ASENSE-D-REL
Specifications
Supply Voltage:
24 VAC/VDC ±20%; 50/60 Hz, 10.5 to 40 VDC maximum (Half-
wave rectified)
Power Consumption:
<1W
Wiring Connections:
0.00232 in² (1.5 mm²) screw terminals
Operating Environment:
Residential, commercial, and industrial spaces
Operating Temperature:
32ºF to 122ºF (0ºC to 50ºC)
Operating RH:
0 to 85% RH Non-condensing
Warm-Up Time:
<5 minutes (@ full specs 15 minutes)
Accuracy:
CO2
1
: ±30 ppm ±3% of reading |
Temperature
: ±1.8ºF (1ºC)
Repeatability:
±20 ppm ±1% of measured value
Annual Zero Drift:
<± 0.3% of measurement range
Operating Pressure:
+1.6% per 0.145 psi (1 kPa) deviation from normal pressure | (1
Atmosphere = 14.7 psi (1.013 KPa))
Sensing Method:
Single beam Non-dispersive Infrared (NDIR)
Sensor Life
2
:
>15 years
Response Time (T1/e):
<10 seconds @ 30 cc / minimum flow rate, <3 minutes diffusion
time
Sensing Range:
CO2
: 0 to 2000 ppm |
Temperature
: -4 to 140ºF (-20 to 60ºC)
Extended CO2 Ranges:
2000 to 10,000 ppm (factory set or programming cable required)
Extended Range Accuracy:
+/- 30 ppm and +/- 5% of reading
Coverage Area:
7500 sq. ft. maximum
Self-Diagnostics:
Complete function check, yellow LED; LCD error indication
(display model only)
Display (Optional):
4 digits, 7 segments LCD with ppm indicator
Calibration
3
:
Senseair ABC algorithm (Automatic Baseline Correction)
Outputs:
Out 1 (CO2)
: 0/2 to 10V, 0/4 to 20 mA, 0 to 2000 ppm
Out 2 (Temperature)
: 0/2 to 10V, 0/4 to 20 mA, 32 to 122ºF (0 to
50ºC)
Relay (Optional):
Out 3
: N.O. or N.C. rated 0.5A @ 125 VAC; 1A @ 24 VDC
