Battery Replacement
The low battery indication LBT appears on the LCD when the battery runs low.
To replace the battery:
1. Remove the meter's rubber protective cover to access the rear battery compartment.
2. Remove the battery compartment cover using a small coin or screwdriver and remove the
9V battery.
3. Replace the 9V battery and reinstall the cover and holster.
Specifications
General Specifications
Circuit
Display
Measurements
Data hold
Sensor Structure
Data recording
Auto power off
Sample rate
Data Output
Custom one-chip LSI microprocessor circuit
Dual function 0.5" (13 mm) 1999 count LCD w/ contrast adjust
Dissolved O
2
: mg/l (milligrams per liter); Oxygen in air: %;
Temperature: °C/°F
Data hold key freezes displayed reading
Remote Polarographic Dissolved Oxygen Sensor
Temperature sensor: Precision thermistor
Min/Max/Avg readings stored for later recall
Meter turns off after 10 minutes
0.4 Sec (approx.)
RS 232 PC serial interface
Operating conditions Temperature: 32 to 122 °F (0 to 50 °C); Humidity: < 80% RH
Battery power
9V alkaline battery
Power Consumption Approx. 6.6 mA DC
Weight
Dimensions
Accessories
Optional
accessories
Electrical Specifications
Measurement
Dissolved Oxygen
Oxygen in air
Temperature
(probe only)
Compensation
adjustments
0.74 lbs. / 335 g (including batteries & probe)
Main instrument: 7.1 x 2.8 x1.3" (180 x 72 x 32mm)
Probe: 4.9" x 0.8" length/diameter (125 x 20mm)
Carrying case, 9V battery, and 5 membranes
Membranes, data acquisition software & RS232 interface cable
Range
0.0 - 19.9 mg/L
0 - 100% O
2
32 to 122 F
0 to 50 C
Temperature (automatic)
Salt
Altitude
o
o
Resolution
0.1mg/L
0.1 % O
2
0.1 F/C
o
o
Accuracy
+ 0.4 mg/L
+ 0.7% O
2
±1.5 F
+ 0.8 C
o
o
o
32 to 122 F (0 to 50 C)
0 to 39% (1% = ppt)
0 to 3900 meters
7
407510
V7.0 10/06
EXTECH [ EXTECH INSTRUMENTS CORPORATION. ]
