User Manual

407510 V7.0 10/06
7
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 Custom one-chip LSI microprocessor circuit
Display Dual function 0.5" (13 mm) 1999 count LCD w/ contrast adjust
Measurements Dissolved O
2
: mg/l (milligrams per liter); Oxygen in air: %;
Temperature: °C/°F
Data hold Data hold key freezes displayed reading
Sensor Structure Remote Polarographic Dissolved Oxygen Sensor
Temperature sensor: Precision thermistor
Data recording Min/Max/Avg readings stored for later recall
Auto power off Meter turns off after 10 minutes
Sample rate 0.4 Sec (approx.)
Data Output 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 0.74 lbs. / 335 g (including batteries & probe)
Dimensions 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)
Accessories Carrying case, 9V battery, and 5 membranes
Optional
accessories
Membranes, data acquisition software & RS232 interface cable
Electrical Specifications
Measurement Range Resolution Accuracy
Dissolved Oxygen 0.0 - 19.9 mg/L 0.1mg/L + 0.4 mg/L
Oxygen in air 0 - 100% O
2
0.1 % O
2
+ 0.7% O
2
Temperature
(probe only)
32 to 122
o
F
0 to 50
o
C
0.1
o
F/C ±1.5
o
F
+
0.8
o
C
Temperature (automatic) 32 to 122
o
F (0 to 50
o
C)
Salt 0 to 39% (1% = ppt)
Compensation
adjustments
Altitude 0 to 3900 meters