Meter Description - Extech Instruments 407227 User Manual

Meter Description

1. BNC connector for pH or optional ORP probe
2. RS-232 PC interface jack
3. LCD display
4. pH electrode
5. Calibration and slope adjustment potentiometers
6. Temperature probe jack
7. LCD contrast adjustment
8. Keypad:
POWER: Press to turn the meter ON or OFF
HOLD: Press to freeze/unfreeze the displayed reading
C/F: Press to select the desired unit of measure for temperature
RECORD: Press to track the MAX, MIN, and AVG readings
RECALL: Press to view the MAX, MIN, and AVG readings
MTC: Manual Temperature Compensation. Refer to the dedicated Manual
Temperature Compensation section for details.
'>' and '>>' used when programming the manual temperature compensation. Refer
to the dedicated Manual Temperature Compensation section.
9. Slide switch to select Manual Temperature Compensation (MTC), Automatic
Temperature Compensation (ATC), and mV (ORP) modes
10. Battery compartment and tilt stand (rear)
11. Protective jacket (remove to access battery compartment)
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