Omega Engineering OMEGASCOPE OS533 - Manual (Page 22)

2.2.1 Measurement Techniques
You can use the IR Thermometer to collect temperature data in any
one of five different ways:
• Spot Measurement — Measures the temperature of discrete objects
such as motor bearings, engine exhaust manifolds, etc.:
1. Aim at the desired target and pull the trigger.
2. If necessary, adjust the emissivity using the and
keys.
3. Read the temperature.
• Differential Measurement — Measures the temperature differential
between two spots (the maximum and minimum temperatures
viewed)
1. Aim the thermometer at the first spot and pull the trigger. Press
the
key to lock the trigger.
2. If necessary, adjust the emissivity.
3. Aim at the second spot.
4. Adjust the emissivity of the second spot if required.
5. To display the differential temperature, press the key until
“dIF” appears on the display.
6. Read the differential temperature from the upper display.
7. Press the key to unlock the trigger.
• Static Surface Scan – Measures the temperature across a static
surface:
1. Aim the thermometer at a starting point and pull the trigger.
Press the key
to lock the trigger.
2. If necessary, adjust the emissivity.
3. Slowly move the thermometer so that the line of sight sweeps
across the surface. The thermometer measures the temperature
at each point on the surface.
4. To record the temperature profile across the surface, connect
the IR thermometer to a strip chart recorder. Refer to Figure
2-7 for details. The IR thermometer provides an analog output
of 1mV/degree. (0.5 mV/Deg on OS524)
5. After all the data has been taken, press the key to unlock
the trigger.
2-7
Using the Handheld Infrared Thermometer
2