Data Sheet for Product
Technical Specification Sheet
Document No. 149-909
July 26, 2019
Siemens Industry, Inc.
Page 1 of 2
QPM Series Indoor Air Quality Duct
Sensors
Description
The QPM Series Indoor Air Quality Duct 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 32F
to 122F (0C to 50C) or -31F to 95F (-35C to
35C).
The QPM2102 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.
QPM Series Air Quality Duct Sensors and.
QPM21xxD Indoor Air Quality Duct 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 recalibration.
• Field-selectable output provides 0 to 10V, 0 to 5V,
or 4 to 20 mA output signal(s).
Ordering Information
Part
Number
Description
QPM2100
Duct CO
2
Sensor
QPM2102
Duct CO
2
+ VOC Sensor*
QPM2102D
Duct CO
2
+ VOC Sensor w/Display*
QPM2160
Duct CO
2
+ Temperature Sensor
QPM2160D
Duct CO
2
+ Temperature Sensor w/Display
QPM2162
Duct CO
2
+ Temperature + RH Sensor
QPM2162D
Duct CO
2
+ Temperature + RH Sensor w/Display
* Siemens CO
2
+ VOC sensors are designed to help maximize
occupant comfort and are not suitable for use in life safety
applications.