Omega OSP SERIES - Manual (Page 22)

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In measuring mode, press the <*> key to enable (disable) the laser spot. After one second the message “LAS EN” (“LAS
DIS”) will be displayed.
When enabled, the laser can be turn on by pressing the <Trigger> button for more than 1 second; a flashing emission
indicator symbol “*” will appear on the lower display.
ee
°C
The laser will go out automatically releasing the <Trigger> button.
NOTE: T O PREVENT ANY COLLATERAL RADIATION IN EXCESS OF THE LIMITS DURING THE OPERATION OR MAINTENANCE , THE LASER
BEAM WILL AUTOMATICALLY SWITCHED OFF WHEN TRIGGER IS RELEASED ( ALSO IN LOCK OPERATION MODE ).
9.5 Unstable temperature measurement
When measuring a very unstable temperature process, is necessary a slow and stable reading. OSP is equipped with an
advanced average mode that works with the following parameters :
! Working band
! Weight
The working band is used to define the maximum difference between the actual and previous measurement values
where average mode has to be operative. It means that if you are measuring ambient temperature ( for example 23°C )
and you point the instrument to the process ( for example 600°C ) you don’t need a slow increasing due to average ( The
difference is 600 – 23 = 577 °C ).
If working band is set at 100°C instrument don’t apply any average and it will pass directly to temperature of the process
( 600°C ) otherwise with standard average you will see the temperature slowly growing from ambient to the target point.
When instrument is measuring the process the difference due to unstable temperature is inside working band so it will
works in average mode.
More unstable is the process higher has to be the weight of the average. Higher is the weight ,slower will be the reading.
Indicated values with
weighted average = 0
Weighted average effect
Input temperature
fluctuations Indicated values with
weighted average = 2 Indicated values with
weighted average= 32
Temperature
fluctuation Measured value with weighted
average=32 and working band
excluded
Measured value with weighted
average=32 and working band
included
Working band effect
To enable/disable the average mode follows the procedure below: