COSA Xentaur Xentaur XDT - Manual (Page 10)

Section 2: Sensor and Sampling Techniques
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2. Sensor and Sampling Techniques
2.1 Precautions using the sensor
The Xentaur HTF™ Al
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O
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sensor is designed and field proven to be highly reliable, rugged and
maintenance free. However the user should consider the following precautions:
•
If the instrument is used to measure moisture in toxic, flammable, or explosive gases, the sam-
ple outlet must exhaust to a safe place.
• Check the sample line for leaks before and after connecting.
• If measuring gases at high pressures, make sure the sample system is depressurized before
installing or removing the sensor probe, or other items e.g. filters.
• To avoid the need for prolonged dry-down (when expecting to measure dewpoints dryer than
–65ºC), do not expose the sensor to room air longer than necessary (1 - 2 minutes). Thus, do
not open the sensor container before you are ready to install the sensor.
• The sensor container has desiccant to keep the sensor dry during shipping and to avoid dam-
age due to condensation. Close the container immediately after removing the sensor to avoid
degradation of the desiccant.
• Do not throw away the sensor container, you may use it again to transport the sensor between
locations, to store it between uses or to ship it back to the factory for certification. The con-
tainer can be attached to the sensor cable, by trapping the cable with the lid strap.
• Do not expose the sensor to corrosive gases such as gases containing chlorine, ammonia or
HCl. (SO
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can be monitored when the moisture content is low).
• Except for the XTR65W sensor:
1. Do not expose the sensor to liquid water, as it may get damaged.
2. Do not breathe directly onto the sensor, as condensation may form which could damage
the sensor element.
• Do not install the sensor near heat sources such as radiators or air ducts.
• Do not install the sensor in places subject to extreme mechanical vibration or shock. If this is
not avoidable, use resilient mounting. If in doubt, call your representative.
• Do not disassemble the porous metal filter encapsulation, as this will damage the sensor and
void your factory warranty.
• Prior to installation of the probe, ensure that no contaminants are present in the system (e.g.
oil, liquid water).