Available with analog outputs or protocol for BACnet RS-485
Integrated set-point relay
Optional field replaceable RH elements
LCD with cover included
Applications
Controlling ventilation in response to occupancy
Facilitating compliance with ASHRAE 62.1 standard for air quality
Offices, conference rooms, and public assembly areas
The AQW series design allows customization for a sensor that meets project requirements for monitoring temperature, CO2 and relative humidity. The sensor can be ordered as stand alone temperature, CO2/Temp, RH/Temp or all-in-one CO2/RH/Temp with a 0-5/10V analog or BACnet RS485 output. Lower material costs and installation time by combining multiple sensors into a single sensor housing with standard LCD and optional add-on features.
Available with 0-5/10V analog or BACnet protocol communication
Protocol Version
BACnet RS-485 ready
Auto Configuration Wizard detects baud rate and first available MAC address on network
Adjustable set-point using button menu or optional 10k slider
Analog Version
LCD for easy setup of all parameters (concealment cover included)
Optional thermistors, sliders and override button
2% RH field replaceable sensor
On-board temperature compensation for RH eliminates temp coefficient errors achieving excellent measurement accuracy, high repeatability and offset stability
State of the art testing facilities. 8-point NIST traceable certification available - consult factory
Quality
Industry leading 7-year limited warranty/ 2-year RH element, 3-year CO2 element limited warranties
SPECIFICATIONS
Power Supply
12-30VDC/24VAC(1), 100mA max.
Analog Outputs
Temperature
0-5/10V standard, thermistor/RTD values optional; Scaling 50°F to 95°F (10°C to 35°C)
CO2 and RH
0-5/10V
Update Rate
Continuous
Analog Relay
Programmable
Solid-state output, 1A @ 30 VAC/DC, N.O.
Protocol Output
Protocol
BACnet
Connection
3-wire RS-485, with isolated ground
Data Rate
Locally set baud rate up to 115200 (9600, 19200, 28800, 38400, 57600, 76800, 115200)
Address Range
0-127
Protocol Relay Set-point
Programmable
Solid-state output, 1A @ 30VAC/DC N.O.
Source selectable: CO2, RH, Temperature
Relative Humidity
Type
Digital CMOS
Accuracy
2% models, ±2% over 10 to 90%RH range
Resolution
0.05%RH
Hysteresis
±1%RH
Temperature coefficient
Compensated on-board
Response time (2)
30s
Sample rate
3s
Operating range/Output Scale
0 to 100%RH (non-condensing)
Long term drift
<0.5%RH per year
Operating conditions (3)
-20° C to 60° C @ RH>90%
-20° C to 80° C @ RH=50%
Temperature (with RH element)
Type
Silicon Bandgap
Nominal Accuracy
±0.3° C (operating range)
Maximal Accuracy
±0.5° C (at 25° C), ± 1.0° C (operating range)
Resolution
0.01° C
Repeatability
0.1° C
Response time (2)
30s
Sample Rate
3s
Temperature (without RH element)
Type
NTC Thermistor
Nominal Accuracy
±0.5° C (operating range)
Maximal Accuracy
±1.0° C (at 25° C), ±2.0° C (operating range)
Resolution
0.05° C
Repeatability
±0.1° C
Sample Rate
100 milliseconds
Operating Environment
Temperature
32 to 122F (0 to 50C)
Humidity
0-95% non-condensing
Enclosure
Material
ABS Plastic
Dimensions
4.85"h x 3.25"w x 1.19"d
One side of transformer, secondary is connected to signal common. Dedicated transformer is recommended.
Time for reaching 63% of reading at 25° C and 1 m/s airflow
Long term exposures to conditions outside normal range at high humidity may temporarily offset the RH reading (+3%RH after 60 hours.)
