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3: Performing Meter Testing
Electro
Industries/GaugeTech
™
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3.1: Testing Tools
The Shark® 270 meter is equipped with light-emitting diodes (LEDs) for calibration
and a liquid crystal display with Test Mode screens. These two standard features
provide user interface and equipment interface points for meter testing.
Figure 3.1: Meter Test Pulse and Test Button Location
3.1.1: Test Pulse LEDs
The Shark® 270 meter has two IR test pulses. Test Pulse LEDs are located in the
upper left and right-hand portion of the meter face as shown in Figure 3.1.
The Test Pulse LEDs continuously emit calibration pulses (infrared light). The pulses
are indicative of the energy flow magnitude regardless of the operating quadrant.
Light Test Pulse for
Wh accuracy
testing
Test Button under
the clear cover
Light Test Pulse for
VARh accuracy
testing