QVM62.1 Air Velocity Sensor
Technical Instructions
Document Number 155-006
October 26, 2006
Siemens Industry, Inc.
Page 3
Connections
Mechanical
Screw connection
Electric
Screw terminal, maximum 2 × 18 AWG
Degree of protection
Degree of protection provided by enclosures
as per EN 60 529
Transducer
IP 42
Sensor head
IP 20
Degree of protection as per EN 60 730
III
Environmental conditions
Climatic conditions
Temperature
23°F to 113°F (-5°C to 45°C)
Humidity (non-condensing)
<95% rh
Mechanical conditions
Class 3M2
Chemical conditions
Class 3C2
Storage (transducer and immersion stem)
Temperature
23°F to 113°F (-5°C to 45°C)
Humidity (non-condensing)
<95% rh
Mechanical conditions
Class 1M2
Transportation
Temperature
23°F to 113°F (-5°C to 45°C)
Humidity (non-condensing)
<95% rh
Mechanical conditions
Class 2M2
Materials and colors
Housing bottom
Polycarbonate, RAL 7001 (silver-gray)
Housing cover
Polycarbonate, RAL 7035 (light gray)
Sensor pipes
Polycarbonate, RAL 7001 (silver-gray)
Sensor head, extension, enc
Polycarbonate, RAL 7035 (light gray)
Connecting flange
Polycarbonate, RAL 7001 (silver gray)
Sensor
Silicone-free
Weight
With packaging
12 oz (0.352 kg)
Engineering Notes
Place the sensor in a location where the airflow is quiet. Do not place it close to
dampers, registers or duct direction changes.
Figure 2. Sensor Placement.
Use a transformer with safety extra-low voltage (SELV) and separate winding for 100%
ON-time.
Observe all local safety rules and regulations pertaining to sizing and protecting
transformers.
Note the permissible line length to the controller.