Owner's manual

4-3
System Operation
4.5 Environment/Operating Conditions
4.5.1 Environment
Omega’s wireless end devices and receiver units have been designed to be fixed
mounted and operated in a clean and dry indoor environment. Care should be
taken to prevent the components of your wireless system from being exposed to
moisture, toxic chemicals and extreme cold or hot temperature that are outside
the specifications listed in this manual.
4.5.2 Ambient Temperature Readings
The Sensing head can operate in an ambient temperature of 0 to 70°C (32 to
158°F). The Sensing head in the high temperature model (-HT) can operate in an
ambient temperature of 0 to 85°C (32 to 185°F) without any cooling required. The
Sensing head can operate up to 200°C (392°F) using the water cool jacket
accessory OS100-WC (See Fig. 3-6).
There is a warm up period of 3 minutes after power up. After the warm up
period, temperature measurement can be made.
When the ambient temperature around the sensor head changes abruptly the
sensor head goes through thermal shock. It takes a certain amount of time for the
sensor head to stabilize to the new ambient temperature. For example, it takes
about 30 minutes for the sensor head to stabilize going from 25°C to 50°C (77 to
122°F) ambient temperature.
The ambient temperature reading displayed on your screen when running the
TC-Central program, is the actual ambient temperature that your transmitter is
being exposed to. This reading is only provided as reference and to aid you in
proper installation of your unit. The ambient temperature reading will blink and
change to RED digits to alert you that the temperature has exceed the maximum
recommended safe operating limit for your transmitter. You should not rely on
this feature as sole protection. Additional protection should be taken the user to
protect your unit from extreme conditions.
Operating your transmitter outside the specified ambient conditions listed in Section
7 of this manual may cause your unit to malfunction and stop working correctly.
Atmospheric Quality
Environments with smoke, dust, and fumes dirty up the optical lens, and cause
erroneous temperature readings. To keep the surface of the optical lens clean, the
air purge collar accessory is recommended, OS100-AP, See Fig. 2-4.
Measuring Temperature
Before starting to measure temperature, make sure that the following check list is
met:
• The sensor head is connected to the main unit.
• The target is larger than the optical field of view of the sensor head (Fig. 7-1 ).
• The emissivity adjustment is set properly (Section 8).
4.5.3 Operating Conditions
The following is a list of basic good practice you should apply when operating
your wireless system.
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NOTE: