Data Sheet for Product

Technical Specification Sheet
Document No. 149-910
July 26, 2019
Siemens Industry, Inc.
Page 1 of 2
QPA20xx Series Indoor Air Quality
Room Sensors
Description
The QPA20xx Series Indoor Air Quality Sensors
optimize room comfort by enabling demand-controlled
ventilation. Models are available that measure CO
2
,
CO
2
and temperature, or CO
2
, temperature and
relative humidity.
For models with humidity, a capacitive humidity
sensing element changes capacitance as a function of
the relative humidity. An electronic measuring circuit
converts the humidity signal to a voltage or current
(field-selectable) signal that corresponds to a relative
humidity range of 0 to 100%. For models with
temperature, the sensor acquires room temperature
with a sensing element that changes electrical
resistance as a function of the temperature. The
resistance is converted to a voltage or current output
signal that corresponds to a temperature range of 32F
to 122F (0C to 50C) or -31F to 95F (-35C to
35C).
The QPA2002 models measure both CO
2
and volatile
organic compounds (VOC) for optimized indoor air
quality. A single output signal is automatically adjusted
to reflect the higher of the two values. A secondary
output provides CO
2
data. This enables the
combination CO
2
+ VOC sensor to be easily
substituted for a CO
2
sensor in any demand control
ventilation control system.
These wall-mounted sensors are designed for use with
all systems and devices capable of acquiring and
handling a 0 to 10 Vdc or 0 to 5 Vdc output signal.
QPA20xx Series Room Indoor Air Quality Room Sensor and
QPA20xxD Series Room Indoor Air Quality Room Sensor
with Display.
Features
• Non-Dispersive Infrared (NDIR) CO
2
sensing
technology is ideal for use in facilities that are
occupied 24/7.
• Combination units enable a single sensor to take
the place of up to three individual sensors.
• Maintenance-free infrared CO
2
sensing element
never requires re-calibration.
• Field-selectable output provides 0 to 10V, 0 to 5V,
or 4 to 20 mA signal(s).
Ordering Information
Part
Number
Description
QPA2000
Room CO
2
Sensor
QPA2002
Room CO
2
+ VOC Sensor*
QPA2002D
Room CO
2
+ VOC Sensor w/Display*
QPA2060
Room CO
2
+ Temperature Sensor
QPA2060D
Room CO
2
+ Temperature Sensor w/Display
QPA2062
Room CO
2
+ Temperature + RH Sensor
QPA2062D
Room CO
2
+ Temperature + RH Sensor w/Display
ARG70
Mounting Plate
(Required for installation on 2” × 4” electrical box.)
* Siemens CO
2
+ VOC sensors are designed to help maximize
occupant comfort and are not suitable for use in life safety
applications