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Environment
4 Environment
Sensor location and configuration depends on the application. Before deciding on a location, you need
to be aware of the ambient temperature of the location, the atmospheric quality of the location
(especially for 1-color temperature measurements), and the possible electromagnetic interference in
that location. If you plan to use air purging, you need to have an air connection available. Also, wiring
and conduit runs must be considered, including computer wiring and connections, if used. The
following subsections cover topics to consider before you install the sensor.
4.1 Ambient Temperature
The sensing head is designed to operate in ambient temperatures between 0°C (32°F) and 65°C
(149°F). The internal ambient temperature can vary from 10°C (50°F) to 72°C (162°F). Internal
temperatures outside this range will cause a failsafe error. In ambient conditions above 65°C (149°F),
an optional air/water cooled housing is available to extend the operating range to 120°C (250°F) with
air cooling, or 175°C (350°F) with water cooling. When using the water cooled housing, it is strongly
recommended to also use the air purge collar to avoid condensation on the lens. In ambient conditions
up to 315°C (600°F), the ThermoJacket accessory should be used.
When using air or water cooling with air purging, make sure air and water supplies are installed
before proceeding with the sensor installation.
Water and air temperatures for cooling should be 15-30°C (60-86°F) for best performance. Chilled
water or air below 10°C (50°F) is not recommended. For air purging or air cooling, clean (filtered) or
"instrument" air is recommended.
4.2 Atmospheric Quality
Smoke, fumes, dust, and other contaminants in the air, as well as a dirty lens are generally not a
problem when using the 2-color mode (as long as the attenuation is equal in both spectral bands).
However, if the lens gets too dirty, it cannot detect enough infrared energy to measure accurately, and
the instrument will indicate a failure. It is good practice to always keep the lens clean. The Air Purge
Collar helps keep contaminants from building up on the lens.
If you use air purging, make sure an air supply with the correct air pressure is installed before
proceeding with the sensor installation.
4.3 Electrical Interference
To minimize electrical or electromagnetic interference or "noise" be aware of the following:
Mount the electronics enclosure as far away as possible from potential sources of electrical
•
interference such as motorized equipment producing large step load changes.
Use shielded wire for all input and output connections.
•
Make sure the shield wire from the electronics to terminal block cable is earth grounded.
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For additional protection, use conduit for the external connections. Solid conduit is better than
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flexible conduit in high noise environments.
Do not run AC power for other equipment in the same conduit.
•
18
info@Raytek-Direct.ca
Rev. E1 Sep 2015
ENDURANCE 1R
1.800.868.7495
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