Control Loops; General Information - RayTek 3i Operator's Manual

2.4.3.1 Control Loops

Each control loop has several modes, which are described in the following sections.

2.4.3.2 General Information

Before you begin using your portable instrument, you should be aware of the follow-
ing general operating rules:
• The instrument goes to "sleep" (low power consumption, no display, no laser, no
backlight) after different times for each loop, as follows:
– SET Loop (after last button use): 10 seconds
– RUN Loop (after releasing the trigger): immediately
– RECALL Loop (after last button use): 10 seconds
_ LOG Loop (after releasing trigger): immediately
• The backlight can be turned on or off in any mode.
• The laser can be used only in the RUN and LOG loops.
• The trigger has two stages. The first stage is for measuring temperature. The sec-
ond stage, when the trigger is pulled all the way in, is for storing temperature val-
ues in the LOG loop.
• The °C or °F icon flashes when the instrument is measuring temperature in the
RUN or LOG loops. It does not flash when values are recalled.
• You can lock the trigger in the RUN loop and the LOG loop.
• You must release the trigger to go into the SET or RECALL loops.
• When you simultaneously press the MODE and ACTIVATE buttons while in the
RUN loop, the instrument is reset to the RUN loop factory default settings (stored
data is unaffected). In the LOG loop, pressing the MODE and ACTIVATE buttons
not only resets the instrument to its LOG loop factory default settings, but also
clears all previously stored data. In both cases, the instrument will "beep" after
reinstalling the default settings. Section 3.6 lists default setting for each model as
well as non-model-specific default settings and range values.
For the short wavelength units (e.g., 2 µm and below)—Avoid taking
temperature measurements in bright sunlight. High levels of ambient
light may produce apparently valid high-temperature readings when
no target is in the thermometer's field-of-view.
Raynger 3i Series Operator's Manual
IMPORTANT
2-11