Siemens Symaro QSM2100 User manual

Symaro™
Fine Dust Duct Sensors
QSM2100 / QSM2162 / AQS2100
The sensors acquire PM2.5 and PM10 concentrations, relative humidity and
temperature
●Operating voltage AC 24 V or DC 15…35 V
●Signal outputs DC 0...10 V or DC 0...5 V or 4...20 mA adjustable
●Range of use -5…45 °C / 5…95 % r.h. (non-condensing)
A6V11893002_en--_c
Smart Infrastructure
2021-07-05

2
Siemens
A6V11893002_en--_c
Smart Infrastructure
2021-07-05
Use
In air ducts of ventilation and air conditioning plants to enhance room comfort and optimize
energy consumption by providing demand-controlled ventilation. The sensor acquires:
●PM2.5 & PM10 concentrations
●Relative humidity of duct air
●Duct air temperature
NOTICE!
●Do not use the sensors as safety devices, such as gas or smoke warning devices!
●Do not use the sensors outdoors!
Type summary
Type
Order number
Description
QSM2100
S55720-S491
Fine dust duct sensor for PM2.5 and PM10
QSM2162
S55720-S492
Fine dust duct sensor for PM2.5 and PM10,
temperature, relative humidity
Order and delivery
When ordering, provide both name and type reference, e.g. fine dust duct sensor QSM2100.
The sensor is supplied complete with mounting flange, cable entry gland M16 and a pre-
installed AQS2100 in fine dust duct sensor.
Accessory
Name
Type
Order number
Filter cap (for QSM2162 replacement)
AQF3101
‒
Fine dust duct sensor module for replacement
AQS2100
S55720-S493
The accessory must be ordered separately.
Product documentation
Title
Document ID:
Mounting instructions (QSM21…)
A6V11892999
Mounting instructions (AQS2100)
A6V11910876
CE declaration
A5W00096641
RCM declaration
A5W00096643
Product environmental declaration
A5W00099435
All documentation can be downloaded at http://siemens.com/bt/download.
Equipment combinations
All systems and devices capable of processing the following sensor signals:
●DC 0...10 V or DC 0...5 V or 4...20 mA

3
Siemens
A6V11893002_en--_c
Smart Infrastructure
2021-07-05
Functions
The duct sensor acquires PM2.5 & PM10 concentrations. The output value is the moving av-
erage of latest sensor data within 10 s.
The duct sensor acquires the relative humidity in the air duct via its capacitive humidity sens-
ing element whose electrical capacitance changes as a function of relative humidity.
The electronic measuring circuit converts the sensor’s signal to a continuous DC 0...10 V or
DC 0...5 V or 4...20 mA signal, corresponding to a relative humidity range of 0...100 %.
The duct sensor acquires the temperature in the air duct via its sensing element whose elec-
trical character changes as a function of the temperature.
The change is converted to an active DC 0...10 V or DC 0...5 V or 4...20 mA output signal
( 0...50 °C or -35...+35 °C).
Mechanical design
The fine dust duct sensor consists of a housing, a printed circuit board, connection terminals,
a mounting flange, and an immersion rod. The immersion rod of the QSM2162 has a meas-
uring tip.
The bisectional housing consists of a base and a removable cover (snap-on design). The
measuring circuit and the setting elements are located on the printed circuit board inside the
cover, the connection terminals are located on the base.
The humidity and temperature sensing elements are located at the end of the measuring
probe and are protected by a filter cap.
Cable entry is made via the cable entry gland M16 (IP54) supplied with the sensor, to be
screwed into the housing.
Immersion rod and housing are made of plastic and are rigidly connected.
The sensor is fitted with the mounting flange supplied with the sensor. The flange must be
placed over the immersion rod and then secured as per the required immersion depth.
The setting elements are located inside the cover.
PM2.5 and PM10 have same DIP switch settings.
Note
Fine dust (PM2.5
& PM10)
Relative humidity
(QSM2162)
Temperature
(QSM2162)
Setting element

4
Siemens
A6V11893002_en--_c
Smart Infrastructure
2021-07-05
The sensor has two sets of DIP switches: S1 and S2.
The different DIP switch positions mean the following:
Test mode
V/I output
PM2.5/PM10
range
selection
Output
parameter
selection
Temperature
range selection
Work
mode
Function
1
2
3
4
5
6
7
8
‒
OFF
OFF
‒
‒
‒
‒
‒
DC 0…10 V
(default)
‒
OFF
ON
‒
‒
‒
‒
‒
DC 0…5 V
‒
ON
OFF
‒
‒
‒
‒
‒
4…20 mA
‒
ON
ON
‒
‒
‒
‒
‒
Back to default
‒
‒
‒
OFF
OFF
‒
‒
‒
0…500 μg/m3
(default)
‒
‒
‒
OFF
ON
‒
‒
‒
0…300 μg/m3
‒
‒
‒
ON
OFF
‒
‒
‒
0…100 μg/m3
‒
‒
‒
ON
ON
‒
‒
‒
0…50 μg/m3
‒
‒
‒
‒
‒
OFF
‒
‒
PM2.5 + r.h. +
temperature
(default) 2)
‒
‒
‒
‒
‒
ON
‒
‒
PM2.5 + PM10 +
temperature 2)
‒
‒
‒
‒
‒
‒
OFF
‒
0…50 °C (default) 2)
‒
‒
‒
‒
‒
‒
ON
‒
-35…35 °C 2)
‒
‒
‒
‒
‒
‒
‒
OFF
Continuous work
mode (default)
‒
‒
‒
‒
‒
‒
‒
ON
Smart work mode
ON
‒
‒
‒
‒
OFF
OFF
‒
Test MODE 1 1)
ON
‒
‒
‒
‒
OFF
ON
‒
Test MODE 2 1)
ON
‒
‒
‒
‒
ON
OFF
‒
Test MODE 3 1)
ON
‒
‒
‒
‒
ON
ON
‒
Test MODE 4 1)
Note:
1) For detailed information on the test mode, see Activating test function [▶5].
2) These functions are only for QSM2162.
Use the test function to check whether the sensor value inaccuracy is caused by the analog
output error. Users can configure DIP1, DIP6 and DIP7 to check if the actual signal output of
terminals (X1, X2, X3) corresponds to the values defined in Test function active [▶5] table.
Test function of X3 is valid only for QSM2162.
Activating test
function
DIP switch config-
uration
S1

5
Siemens
A6V11893002_en--_c
Smart Infrastructure
2021-07-05
Test function active
DIP
X1
X2
X3
DIP1 (ON)
DIP6 (OFF)
DIP7 (OFF)
0 V / 0 V
4 mA
5 V / 2.5 V
12 mA
10 V / 5 V
20 mA
DIP1 (ON)
DIP6 (OFF)
DIP7 (ON)
5 V / 2.5 V
12 mA
10 V / 5 V
20 mA
0 V / 0 V
4 mA
DIP1 (ON)
DIP6 (ON)
DIP7 (OFF)
10 V / 5 V
20 mA
0 V / 0 V
4 mA
5 V / 2.5 V
12 mA
DIP1 (ON)
DIP6 (ON)
DIP7 (ON)
5 V / 2.5 V
12 mA
5 V / 2.5 V
12 mA
5 V / 2.5 V
12 mA
PM2.5 calibration mode 1)
Function
1
2
OFF
OFF
Mode 1 (default)
OFF
ON
Mode 2
ON
OFF
Mode 3
ON
ON
Reserved
Note:
1) Mode 1 is for standard use. Mode 2 and Mode 3 are for advanced application.
●Mode 1: The sensor is calibrated using the TSI device as reference in Arizona A1 dust.
●Mode 2: The sensor is calibrated using the GRIMM device as reference in Arizona A1
dust.
●Mode 3: The sensor is calibrated using the GRIMM device as reference in KCL dust.
S2

6
Siemens
A6V11893002_en--_c
Smart Infrastructure
2021-07-05
Malfunction
In the following table:
●High means the signal output of terminal is 10 V/5 V/20 mA after 60 s.
●Low means the signal output of terminal is 0 V/0 V/4 mA after 60 s.
Malfunction
Signal output
Product
X1 (PM2.5)
X2 (PM10)
X3 (Temperature)
QSM2100
QSM2162
PM2.5
communication
error
High
High
High
‒
√
High
High
‒
√ *)
‒
PM2.5 sensor
module
replacement
warning
High
Low
Normal output
‒
√
High
Low
‒
√
‒
Temperature
sensor fault
Normal output
Normal output
High
‒
√
Notes:
*) If the signal output of X1 & X2 is 10 V or 20 mA, the cause of the error is one of the follow-
ing:
●The selected measuring range of PM2.5 & PM10 is below the measured PM2.5 or PM10
value. E.g., if the selected measure range is 0…50 μg/m3, but the measured PM2.5 or
PM10 value is 100 μg/m3, the signal output of X1 & X2 will be 10 V or 20 mA. Selecting a
higher range resolves this error.
●If the signal output is still 10 V or 20 mA after changing the selected measuring range,
the cause is a PM2.5 communication error.
In the following table:
●High means the signal output of terminal is 10 V/5 V/20 mA after 60 s.
●Low means the signal output of terminal is 0 V/0 V/4 mA after 60 s.
Malfunction
Signal output
X1 (PM2.5)
X2 (r.h.)
X3 (Temperature)
PM2.5 communication
error
High
High
High
PM2.5 sensor module
replacement warning
High
High
Low
Temperature sensor fault
Normal output
High
Low
Humidity sensor fault
Normal output
High
Normal output
Sensor data refresh frequency
The sensor data refresh frequency only applies to smart work mode (DIP8 = ON). It is de-
fined as per the real-time concentration of PM2.5 & PM10 and the interval is 3…8 min. The
data is updated under the following conditions:
Interval
8 min
7 min
6 min
5 min
4 min
3 min
Continuous
Concentration
Differential between real-time and last measurement
< 100 μg/m3
±2 μg/m3
±4 μg/m3
±6 μg/m3
±8 μg/m3
±10 μg/m3
±12 μg/m3
Bigger
> 100 μg/m3
±2 %
±4 %
±6 %
±8 %
±10 %
±12 %
Bigger
QSM2100 (PM2.5
+ PM10)
QSM2162 (PM2.5
+ PM10 + temper-
ature)
QSM2162 (PM2.5
+ r.h. + tempera-
ture)

7
Siemens
A6V11893002_en--_c
Smart Infrastructure
2021-07-05
Notes
Security
CAUTION
National safety regulations
Failure to comply with national safety regulations may result in personal injury and property
damage.
●Observe national provisions and comply with the appropriate safety regulations.
Engineering
Powering the sensor requires a transformer for safety extra low-voltage (SELV) with sepa-
rate windings for 100 % duty. When sizing and protecting the transformer, comply with all lo-
cal safety regulations.
When sizing the transformer, consider the sensor's power consumption.
For correct wiring, see the related device data sheets.
Observe all permissible line lengths.
Cable routing and cable selection
Note that when routing cables, the longer the cable runs and the closer the cables, the
greater the electrical interference. Use shielded cables in EMC-prone environments.
Twisted pair cables are required for both secondary supply lines and signal lines.
Mounting
To ensure degree of protection IP54, the sensor must be fitted with the cable entry pointing
downward!
Mount the sensor where it can be easily accessed by service.
●If used after humidifier, a certain distance is required between humidifier and sensor, so
that the vapor or mist generated by the humidifier can evaporate before reaching the
sensor. This distance is marked on the diagram as BM. The minimum distance between
the humidifier and the sensor must be no less than BM.
●Avoid any impact or shock to the sensing elements in the immersion rod.
●To avoid sunlight damage, do not mount the sensor on a rooftop. To ensure correct op-
eration, the sensor’s ambient temperature must be in the range of -5…45 °C.
Mounting location
and orientation

8
Siemens
A6V11893002_en--_c
Smart Infrastructure
2021-07-05
●The air inlet must be placed facing the air flow in order to achieve the uniformity and ac-
curacy expected.
●Do not install the sensor in a vertical duct.
Mounting instructions are enclosed in the package.
Mounting instruc-
tions

9
Siemens
A6V11893002_en--_c
Smart Infrastructure
2021-07-05
Replacing AQS2100
NOTICE! Only trained engineers may replace the sensor module.
The sensor module must be replaced under the following conditions:
●QSM2162 (PM2.5 + r.h. + temperature): An output signal of 10 V/5 V/20 mA is provided
at signal outputs X1 and X2 and an output signal of 0 V/4 mA at signal output X3.
●QSM2100/QSM2162 (PM2.5 + PM10 + temperature): An output signal of
10 V/5 V/20 mA is provided at signal output X1 and an output signal of 0 V/4 mA at sig-
nal output X2.
Replacing the sensor module:
NOTICE! As the replacement on QSM2162 and QSM2100 is identical, the steps to re-
place the QSM2162 sensor module serve as an example.
1. Detach the sub-housing from the main housing.
CAUTION! Avoid touching any exposed electrical elements.

10
Siemens
A6V11893002_en--_c
Smart Infrastructure
2021-07-05
2. Remove the module by hand.
3. Replace the module by the new one.