Quick Start Instructions; Meter Power; Automatic Power Off - Extech Instruments CG304 User Manual

Quick Start Instructions
Meter Power
Press the power button to switch the meter ON. The display will switch ON. If the display does
not switch ON, install or replace the batteries.
Measurements
Use the film references and zero reference metal substrates to learn how the meter operates
before moving to a professional application. The round metal substrate is the ferrous (magnetic)
substrate and the rectangular shaped metal substrate is the non‐ferrous (non‐magnetic)
substrate. The meter automatically senses ferrous and non‐ferrous substrates.
1. Place a reference film (250µm, for example) on the round, ferrous substrate.
2. Place the spring‐loaded meter sensor against the reference film.
3. In the single mode the meter will emit an audible tone indicating that the measurement
has been taken.
4. In the continuous mode the display will continually measure and update the display
5. The LCD will show the reading (250µm) at the center of the display area.
6. A typical display will also show the following:
 NO = 1 (reading number one) on the lower left of the LCD
 AVG = 250µm (running average) on the lower right
 DIR = DIR mode of operation on the upper left
 Fe = Ferrous substrate on the upper right of the LCD
Experiment with the remaining reference films and the substrate before using the meter
professionally.
Automatic Power OFF
In order to conserve battery life, the meter will automatically turn off after approximately 10
minutes. To defeat this feature use the programming menu detailed in the next section (menu
parameter AUTO POWER OFF under OPTIONS).
3
DIR
Fe
250
um
NO=1 AVG=250
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