DISSOLVED OXYGEN
TRACER
POCKETESTER
See Short form Instruction
on the back cover. Read the
entire manual before use.
TM
CODE 1761
WARNING! This set contains chemicals
that may be harmful if misused. Read
cautions on individual containers
carefully. Not to be used by children
except under adult supervision
TRACER
DISSOLVED OXYGEN • CODE 1761
Table of Contents
Introduction ................................ 4
Specifications ............................... 4
Contents ..................................
Parts & Accessories ............................ 5
Meter Description ............................. 6
Front Panel Description.......................... 6
TRACER Display ............................. 6
SetUp................................... 7
Polarization ................................ 7
Calibration ................................ 7
Measuring Dissolved Oxygen ....................... 8
Basic Operation .............................. 8
Powering the TRACER.......................... 9
Changing the Temperature Units .................... 9
Changing Salinity Compensation .................... 9
Changing the Altitude Compensation .................. 9
Changing Measurement Units ...................... 9
Data Hold ................................ 10
Low Battery Indicator .......................... 10
Storing Readings ............................ 10
Recalling Stored Readings........................ 10
Clearing Stored Memory ........................ 11
Disable Auto Power Off ......................... 11
Calibration ................................ 11
Calibration................................ 12
Zero Oxygen Calibration....................... 13-14
Operational Matrix ............................ 15
Maintenance ............................... 15
Battery Replacement .......................... 15
Replacing the Electrode ......................... 15
Storage.................................. 15
Electrode Cleaning Recommendations ................. 16
Membrane Cap Assembly Replacement ............... 16-17
Troubleshooting ............................. 18
Warranty ................................. 19
Short Form instructions ..................... back cover
5
3
INTRODUCTION
Congratulations on your purchase of the Dissolved Oxygen/Temperature
Tracer. Units of measure are % saturation, mg/L or ppm for dissolved
oxygen and °C or °F for temperature. Advanced features include data hold,
25 point memory, auto shut off, automatic temperature compensation, and
salinity/altitude compensation. Careful use and maintenance will provide
years of reliable service.
SPECIFICATIONS
Display Dual function 3 ½ digit LCD with Bar Graph
Display size: 24 mm x 20 mm
Range % Sat: 0 to 200.0%
DO: 0 to 20.00 mg/L, 0 to 20.00 ppm
Temp: 0 to 50°C, 32 to 122°F
Resolution: % Sat: 0.1%
DO: 0.01 mg/L, 0.01 ppm
Temp: 0.1°C, 0.1°F (0 to 99°F),
1.0 °F (>100 °F)
Accuracy: % Sat: ±2.0% full scale
DO: ±2% full scale
Temp: ±1.0°C, ±1.8°F
Operating Temperature
0 to 50°C (32 to 122°F)
Range
Automatic Temperature
0 to 50°C (32 to 122°F)
Compensation
Salinity Compensation 0 to 50 ppt in 1 ppt increments
Altitude Compensation 0 to 20,000 ft in 1000 ft increments
Sensor Polarographic type
Membrane Bonded membrane cap with threaded fitting
Data Storage 25 tagged (numbered) data sets with recall
Auto Power Off After 10 minutes of no button presses
(override available)
Battery Power Four 303/357 button batteries
Low Battery Indicator ‘BAT’ appears on LCD
Dimensions 1.4 X 6.8 X 1.6 inches (36 X 173 X 41 mm)
4
CONTENTS
Dissolved Oxygen TRACER Kit Code 1761
Includes:
DO TRACER Body
DO Bonded Membrane Cap Assemblies (2)
Electrolyte Solution Code D0600-EL
Sample cup
Lanyard
PARTS & ACCESSORIES
DO Replacement Sensor Kit (sensor module,
membrane cap assembly, electrolyte solution)
DO Membrane Cap Kit (6 membrane cap
assemblies, electrolyte solution, Polishing Strips)
DO Extension Cable, 1 meter (with probe guard
and weight)
DO Extension Cable, 5 meters (with probe guard
and weight)
Code1762
Code 1761M
Code 1763
Code 1764
5
METER DESCRIPTION
Front Panel Description
1.
Battery compartment cap
2. LCD display
3. MODE/HOLD button – change
mode, hold data, store data
4. CAL/RECALL button –
calibration, change temperature
units, recall data
5. ON/OFF button
6. Electrode retaining collar
7. Dissolved oxygen sensor
8. Bonded membrane cap assembly
9. Membrane Cathode
(Note: The electrode storage cap is not shown.)
Bottom View of Electrode
Cathode
TRACER Display
1.
Bar graph reading
2. Measurement units
3. Main display
4. Battery indicator
5. Temperature display
6. Reading hold indicator
Membrane
1
2
3
4
5
6
7
8
9
6
SET UP
Polarization
It will take 2-3 minutes for the probe to polarize. When the meter is first
turned on very high oxygen readings will be displayed. However, these
readings will drop to a steady state as oxygen that was absorbed in the
electrolyte solution, while the meter was turned off, is reduced. Once this
steady state is reached, polarization is complete. The meter may have to be
calibrated after polarization.
1. The meter must be in the % saturation mode. If the meter is not in the
% saturation mode, press and hold the MODE/HOLD button to change
to the next unit of measure in the sequence:
% saturation
l
dissolved oxygen, mg/L
l
dissolved oxygen, ppm
l
Release the MODE/HOLD button when % saturation is displayed.
2. Observe the % saturation reading on the display. The electrode will be
polarized when the reading has stopped drifting and is steady. If the %
saturation value that is displayed is 101.7%, proceed to
Testing/Measurement.
3. If the displayed % saturation is not 101.7% the meter must be
calibrated.
NOTE: The auto-power off feature will automatically shut the meter off 10
minutes after the last button was pressed. If the initial polarization of the
electrode takes longer than 10 minutes, the auto-power off feature must be
disabled. See page 11.
Calibration
Calibration should be performed daily. The electrode membrane must be
clean and dry or the calibration will be incorrect. This is a water saturated
air calibration.
1. Press the ON/OFF button to turn the meter on.
2. The meter must be in the % saturation mode. If the meter is not in the
% saturation mode, press and hold the MODE/HOLD button to change
to the next unit of measure in the sequence:
l
% saturation
l
dissolved oxygen, mg/L
l
dissolved oxygen, ppm
Release the MODE/HOLD button when % saturation is displayed.
3. Observe the % saturation reading on the display. Wait until the reading
is stable.
7
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