User Manual

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Siemens Building Technologies Duct sensor QFM66/C CM1N1863E
HVAC Products 05.05.2003
Fitting notes
Install the sensor at approximately the middle of the duct wall (ideal air mixture).
If the sensor is to be installed downstream of a steam humidifier, maintain a distance of
at least 3 m from it. A bypass is recommended if space is limited.
For dew-point control, install the sensor in the extract air duct.
The sensor can be installed with or without the installation flange.
If the installation flange is used, the flange is installed on the duct wall. The sensor
needs only to be inserted into the flange and clamped.
Install the cable on the removable plug connection of the sensor (see fitting instruc-
tions).
• The seal between housing and cover must not be removed, or else degree of pro-
tection IP 65 will be no longer ensured.
• The measuring rod's sensing elements are sensitive to impact. Avoid any such im-
pact on mounting.
The fitting instructions are enclosed with the sensor.
Commissioning notes
Perform a wiring check on commissioning. The settings required for air conditioning
control, compensation and limitation are made at the devices to which the QFM66/C
sensor is connected. Do not attempt to make adjustments to the sensor.
Rekalibrierservice
Siemens Building Technologies provides a recalibration service
1)
for used sensors.
The recalibration should be performed at 12 month intervals under "normal" conditions,
i.e. within the comfort range for humidity and temperature, and at air contamination
levels that are not above average.
(Re)calibrated sensors should not be stored longer than 12 months before commis-
sioning.
Recalibration or readjustment with repair can be refused if a sensor is more than
10 years old and in poor condition.
The recalibration service
1)
includes the following:
Calibration
2)
with recording of values for humidity (B1) and temperature 0…50 °C (B2)
• Sensor test, including repair and replacement of wear parts; filter every time, sensor
elements if required.
• If necessary, readjustment
3)
and repeat calibration
• Issue and enclosure of a new calibration certificate
• Shipping and registration (the customer gets the same sensor back)
1) The recalibration service is performed and billed under the designation S/QFM66/C
2) The test candidate is connected to a measurement standard. Any deviations found are recorded but not
corrected. Calibration is performed at three points for humidity and temperature.
3) The test candidate is connected to a measurement standard. Any deviations found are corrected.
Location
Caution!
.
.
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Fitting instructions
Services provided