Symaro™ Fine Dust Duct Sensors QSM2100 / QSM2162 / AQS2100 The sensors acquire PM2.5 and PM10 concentrations, relative humidity and temperature ● ● ● A6V11893002_en--_a 2020-03-13 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.
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.
Functions Fine dust (PM2.5 & PM10) The duct sensor acquires PM2.5 & PM10 concentrations. The output value is the moving average of latest sensor data within 10 s. Relative humidity (QSM2162) The duct sensor acquires the relative humidity in the air duct via its capacitive humidity sensing 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...
DIP switch configuration The sensor has two sets of DIP switches: S1 and S2. The different DIP switch positions mean the following: S1 Test mode V/I output PM2.
Test function active DIP X1 X2 X3 DIP1 (ON) DIP6 (OFF) DIP7 (OFF) 0V/0V 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 0V/0V 4 mA DIP1 (ON) DIP6 (ON) DIP7 (OFF) 10 V / 5 V 20 mA 0V/0V 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 S2 PM2.
Malfunction QSM2100 (PM2.5 + PM10) QSM2162 (PM2.5 + PM10 + temperature) 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) Product X2 (PM10) X3 (Temperature) QSM2100 QSM2162 PM2.5 communication error High High High ‒ √ High High ‒ √ *) ‒ PM2.
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 separate windings for 100 % duty. When sizing and protecting the transformer, the local safety regulations must be complied with.
● To avoid sunlight damage, do not mount the sensor on a rooftop. To ensure correct operation, the sensor’s ambient temperature must be in the range of -5…45 °C. ● The air inlet must be placed facing the air flow in order to achieve the uniformity and accuracy expected. ● Do not install the sensor in a vertical duct. Mounting instructions Mounting instructions are enclosed in the package.
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 signal output X2.
2. Remove the module by hand. 3. Replace the module by the new one.
4. Install the sub-housing on the main housing. NOTICE Turn off the device before replacing the sensor module. If not possible, insert a new sensor module 10 s after the old one is removed. Disposal The device is considered an electronic device for disposal in accordance with the European Guidelines and may not be disposed of as domestic garbage. ● Dispose of the device through channels provided for this purpose. ● Comply with all local and currently applicable laws and regulations.
FCC (Federal Communications Commission) This device complies with part 15 of the FCC rules. Operation is subject to the following two conditions: 1. This device may not cause harmful interference; 2. This device must accept any interference received, including interference that may cause undesired operation. Changes or modifications not expressly approved by the party responsible for compliance could void the user's authority to operate the equipment.
Technical data Power supply Operating voltage AC 24 V ±20 % or DC 15…35 V (SELV) or AC/DC 24 V class 2 (US) Frequency 50/60 Hz at AC 24 V External supply line protection (EU) Fuse slow max. 10 A or Circuit breaker max. 13 A Characteristic B, C, D according to EN 60898 or Power source with current limitation of max. 10 A Power consumption QSM2100 QSM2162 3.2 VA 3.8 VA Functional data (PM2.
Functional data (temperature with QSM2162) Range of use -5…45 °C Measuring range 0…50 °C/-35…35 °C Measuring accuracy at DC 24 V in the range of 20…25 °C 15…35 °C -35…50 °C ±0.3 k (typical) ±0.6 k ±1 k Time constant t63 < 3.5 min in 2 m/s moved air Output signal, linear (terminal X3) ● DC 0...10 V or DC 0...5 V 0...50 °C/-35…35 °C, max. ±1 mA ● 4...20 mA 0...50 °C/-35…35 °C, max. 500 ohm Functional data (humidity with QSM2162) Range of use 5…95 % r.h.
Standards, directives and approvals disposal). General Cable lengths for measuring signals Perm. cable lengths See device data sheet for signal handling Electrical connections screw terminals 1 × 2.5 mm2 or 2 × 1.
Diagrams Connection terminals QSM2100 16 Siemens Smart Infrastructure QSM2162 G Operating voltage AC 24 V (SELV) or DC 15...35 V G0 Ground and measuring neutral X1 Signal output DC 0...10 V, DC 0...5 V or 4…20 mA X2 Signal output DC 0...10 V, DC 0...5 V or 4…20 mA X3 Signal output DC 0...10 V, DC 0...
Dimensions Dimensions in mm Siemens Smart Infrastructure Datasheet 17 A6V11893002_en--_a 2020-03-13
Issued by Siemens Switzerland Ltd Smart Infrastructure Global Headquarters Theilerstrasse 1a CH-6300 Zug Tel. +41 58 724 2424 www.siemens.com/buildingtechnologies 18 Siemens Smart Infrastructure Document ID A6V11893002_en--_a Edition 2020-03-13 © Siemens Switzerland Ltd, 2020 Technical specifications and availability subject to change without notice.
