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407510-en-GB_V7.6 7/15
2
Introduction
Congratulations on your purchase of Extech's Heavy Duty Dissolved Oxygen / Temperature Meter
which simultaneously displays Dissolved Oxygen or Oxygen in air, and Temperature. Units of
measure are mg/l for Dissolved Oxygen, % for Oxygen in air, and
o
C/
o
F for temperature. Oxygen is
measured with a remote sensor that also contains a thermistor for measuring temperature.
Advanced features include RS 232 PC serial interface, data hold, auto shut off, and Min/Max/Avg
recording.
Meter Description
1. LCD Display
2. POWER ON/OFF key
3. Data HOLD key
4. °C/°F selection key
5. RECORD key
6. RECALL key
7. Factor adjust key
8. Probe head
9. Sensor body
10. Sensor plug
11. RS-232 output jack
12. Battery cover (rear)
13. Altitude compensation key
14. O
2
Cal key
15. Zero key
16. Mg/L (DO), O
2
(Air) selection key
17. % Salt key
1
11
10
2
5
15
14
12
8
9
4
7
16
3
6
13
17