Carrier NSA-ASENSE-D-LCD-REL Safety guide

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 1of 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:
CO21: ±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 Life2:
>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
Calibration3:
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

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 2of 9
Relay Trip Point4:
1000 ppm (factory set)
Relay Deadband/Hysteresis:
100 ppm (factory set)
Relay Durability:
Mechanical: 5,000,000 operations minimum (at 36,000
operations/hr)
Electrical: 100,000 operations minimum (under rated load, at
1,800 operations/hr)
Storage:
NSA-ASENSE-D: -40 to 158ºF (-40 to 70ºC)
NSA-ASENSE-D-LCD: -4 to 122ºF (-20 to 50ºC) 0 to 85% RH
Non-condensing
Enclosure:
Duct Box: PC & ABS blend, Flammability Rating UL94V-0
Cover: Makrolon® 6555 plastic, Flammability Rating UL94V-0
Pipe: PC & ABS blend, Flammability Rating UL94V-0
Product Dimensions:
(H) 5.95” (151.9 mm) x (W) 3.33” (84.6 mm) x (D) 1.85” (47 mm)
Product Weight:
0.812 lbs (0.368 kg)
Agency Approvals:
EMC Directive 2014/30/EC, RoHS Directive 2011/65/EU & RoHS
3 Directive 2015/863/EU
1Accuracy is defined after minimum three (3) ABC periods (1 period = 8 days) of continuous operations
2In normal Indoor Air Quality (IAQ) applications | Corrosive environments are excluded
3Building CO2 levels must drop to 400 ppm some time during the week for ABC to work properly | If the building is occupied 24 hrs/day,
ABC must be turned off
4Changes can be made using TTL-232R-3V3 cable and UIP5 software
Dimensional Drawing
Front and Top Views
Right View
Accessories
Part Number
Description
NSA-TTL-232R-3V3
USB programming cable

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 3of 9
Installation
1. Top part
2. Lid
3. Front part
4. Wall plate
5. Screw
6. Label with settings inside
the top part
Dismounting the sensor
Push the front part of the lid upwards
while keeping the wallplate steady
Fold the front part with the lid forwards and loose it
from the hooks (#1)

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 4of 9
Mounting the sensor
The wall plate is screwed onto the wall
The screw head diameter should be max 7,5 mm
The screw head height should be max 2,5 mm
(A) Put the top tabs of the front part into the top holes of the wall plate.
(B) Press the lower edge of the case onto the wall plate to latch
The top part is pushed under the locking hooks of
the wall plate and secured with a screw.
Terminals and jumpers on aSENSE RL.
The darker positions are default settings.
Terminals and jumpers are located under the top part.
CAUTION If the PCB must be removed, it must be handed carefully and protected from electrostatic discharge! Removing
the PCB is not normally required.

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 5of 9
Electrical connections
The power supply has to be connected to ⨤and ┴. ┴ is considered as system ground. If the analogue output is connected
to a controller, the same ground reference has to be used for the aSENSE RL unit and for the control system. Unless
different transformers are used, special precautions must be taken.
IMPORTANT The same ground reference has to be used for the aSENSE RL unit and for the control system. If possible
keep the sensor powered up after mounting. Connect the analogue output before measuring.
Connection
Terminal
Function
Electrical Data
Notes
⨤
┴
Power (+)
Power Ground (-)
24 VAC/DC+ (+-20%), 3W
24 VAC/DC-
2W without output load1
Out (1)
Out (2)
Analogue Output 1 (+)
Analogue Output 2 (+)
0-10 VDC or 0-20 mA, 2-10
VDC or 4-20 mA
Same as Output 1
According to positions of
OUT1 and start point jumpers.2
According to positions of
OUT2 and start point
jumpers.2, 3
5
6
7
Normally closed relay
Relay COM
Normally open relay
Contact free relay
minimum load 1mA/5V
rated load
0,5A/125VAC; 1A/24VDC
Triggered by register Out (3).
8
Not Used
1The ground terminal is used as negative power supply DC input or AC phase ground (halfwave rectifier). A single transformer may be
used for the entire system.
2aSENSE RL can deliver a voltage or a current loop for Out(1) / Out(2). To change between voltage and current output mode the
hardware jumpers are used. There is one jumper for Out(1) and one for Out(2), so that one output can be a voltage output and the other
a current output. Both, voltage output and current output can have start points 0 % (0-10 VDC or 0-20mA) or 20% (2-10 VDC or 4-
20mA). The same start point is used for both outputs. See the function manual.
3Please use voltage outputs for temperature measurements. The accuracy of temperature measurements is valid only for units
configured in voltage outputs mode.