User Manual

ManualsBrandsSiemens ManualsSensors Air qualityDuct air quality sensors QPM11x4

A6V101101338_en--_a Building Technologies

2017-03-14

Duct

air quality sensors

QPM11x4

· Maintenance-free CO

sensing element based on optical infrared absorption

measurement (NDIR = non dispersive infrared)

· No recalibrations required

Use

In air ducts of ventilation and air conditioning plant to enhance room comfort and to

optimize energy consumption by providing demand-controlled ventilation. The sensor

acquires CO

concentrations and temperature.

The sensors may not be deployed as safety devices, e.g. as gas or smoke warning

devices!

Type summary

Type Order number Designation

QPM1104 S55720-S455 Duct sensor CO

QPM1164 S55720-S456 Duct sensor CO

The sensor is supplied complete with mounting flange and cable entry gland M16.

Engineering notes

The sensor must be powered by a transformer for safety extra low-voltage (SELV) with

separate windings, suited for 100 % duty.

On applications with EMC problems, use shielded cables. For secondary power lines

and signal lines, use twisted-pair cables.

Mounting notes

To ensure degree of protection IP54, the sensor must be fitted with the cable entry

pointing downward.

Important!

Cable routing and

cable selection

Mounting location and

orientation

Summary of content (4 pages)

PAGE 1
Duct air quality sensors QPM11x4 · Maintenance-free CO2 sensing element based on optical infrared absorption measurement (NDIR = non dispersive infrared) · No recalibrations required Use In air ducts of ventilation and air conditioning plant to enhance room comfort and to optimize energy consumption by providing demand-controlled ventilation. The sensor acquires CO2 concentrations and temperature. Important! The sensors may not be deployed as safety devices, e.g.
PAGE 2
Caution · · Mounting instructions If used in connection with steam humidifiers, the distance to the humidifier must be a minimum of 3 m. If permitted by the installation, the distance should be as great as possible, but no more than 10 m The sensing elements in the immersion rod are susceptible to impact and shock. Any impact or shock should therefore be avoided. Mounting instructions are enclosed in the package.
PAGE 3
Cable entry gland Directives and Standards PA, RAL 7035 (light grey) Sensor (complete assembly) Silicone-free Packaging Corrugated cardboard Product standard EN 60730-1 Automatic electrical controls for household and similar use Electromagnetic compatibility (Applications) For use in residential, commerce, light-industrial and industrial environments Environmental compatibility *) EU Conformity (CE) CE1T1962xx RCM Conformity CE1T1961en_C1 UL UL 873, http://ul.
PAGE 4
Issued by: Siemens Switzerland Ltd. Building Technologies Division International Headquarters Gubelstrasse 22 6301 Zug Switzerland Tel. +41 41-724 24 24 www.siemens.com/buildingtechnologies © Siemens Switzerland Ltd.