Hanna Instruments HI 8043 User Manual
Instruction Manual
HI 8043
Portable
Dissolved Oxygen Meter
DO meter
HI 8043
STB
OFF
°C
O
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ZERO
SLOPE
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°C
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PRELIMINARY EXAMINATION
Dear Customer,
Thank you for choosing a Hanna Instruments
Product.
Please read this instruction manual carefully
before using the instrument.
This manual will provide you with all the neces-
sary information for the correct use of the
instrument.
If you need additional technical information,
do not hesitate to e-mail us at
tech@hannainst.com
This instrument is in compliance with the CE
directives.
TABLE OF CONTENTS
Preliminary Examination............................. 3
General Description .................................... 3
Functional Description (Probe) ................... 4
Functional Description (Meter).................... 5
Specifications ............................................. 6
Probe Initial Preparation ............................. 7
Dissolved Oxygen Calibration ..................... 9
Temperature Calibration ............................ 15
Taking Measurements .............................. 1 6
Probe & Membrane Maintenance ............. 17
Battery Replacement ................................ 19
Accessories.............................................. 20
Warranty ................................................... 21
CE Declaration of Confirmity .................... 22
Remove the instrument from the packing material and examine it to make sure that no
damage has occurred during shipping. If there
is any damage, notify your Dealer.
Each meter is supplied complete with:
• HI 76401 DO probe
• Spare membrane with O-ring (2 pcs)
• Protective cap
• HI 7041S electrolyte solution (30 mL)
• Calibration screwdriver
• 9V battery (1 pc)
• Instructions
Note: Save all packing material until you are
sure that the instrument functions
correctly. All defective items must be
returned in the original packaging with
the supplied accessories.
GENERAL DESCRIPTION
HI 8043 is a portable meter for Dissolved
Oxygen measurements.
It is housed in a lightweight case, with an
easy-to-read LCD.
Dissolved oxygen and temperature measurements can be performed in the field (wastewater treatment, fish-farming, water analysis,
etc.) as well as in the laboratory without
compromising accuracy.
Dissolved oxygen is indicated in mg/L (ppm)
and the reading is compensated for the temperature effect (ATC).
The dissolved oxygen probe is provided with
a membrane for covering the polarographic
sensors, and features a built-in thermistor for
temperature measurements and compensation.
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3
The thin permeable membrane isolates the
sensor elements from the sample, but allows
oxygen to enter.
A voltage is applied across the sensor, and
the oxygen that has passed through the membrane reacts causing the current to flow, hence
determining a reading.
A convenient feature of the instrument is its
standby mode which keeps the probe polarized
and ready for instant measurements.
FUNCTIONAL DESCRIPTION (METER)
1
FUNCTIONAL DESCRIPTION (PROBE)
1. D.O. Probe
2. Protective Cap
3. Watertight Shielded Cable
4. Probe Body
5. O-Ring Seal
6. Silver Chloride Anode
7. Platinum Cathode (sensor)
8. Oxygen Permeable Membrane
9. Membrane Cap
3
DO meter
STB
OFF
HI 8043
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ZERO SLOPE °C
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1. Liquid Crystal Display
2. "OFF" (to switch the meter off)
3. "STB" (to switch the meter on and polarize
the probe. Use this standby position without switching the meter off if you are
going to take further measurements)
4. "°C" Measurement
5. "O2" Measurement
6. ZERO Calibration Trimmer
7. SLOPE Calibration Trimmer
8. °C Calibration Trimmer
9. Rotary Switch
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5
SPECIFICATIONS
PROBE INITIAL PREPARATION
Range 0.00 to 19.99 mg/L O
0.0 to 50.0°C (32 to 122 °F)
Resolution 0.01 mg/L O
0.1°C
Accuracy ±1.5% F.S. (O2)
±0.5°C
Typical EMC ±1.5% F.S. (O2)
Deviation ±1°C
Calibration Manual, 2 point (zero and slope)
Temperature Automatic, 0 to 30°C
Compensation (32 to 86°F)
Probe HI 76401 polarographic
with 3 m (10') cable (included)
Battery Type 1 x 9V
Life approx. 100 hours of continuous use
Environment 0 to 50°C (32 to 122°F); RH max 95%
Dimensions 180 x 83 x 40 mm (7.1 x 3.3 x 1.6")
Weight 240 g (8.4 oz.)
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PROBE PREPARATION
All DO probes are shipped dry. To hydrate
the probe and prepare it for use, connect it to
the meter and proceed as follows.
1. Remove the red & black
Shipping
cap
plastic cap. This cap is
only used for protecting the
black
probe during shipment, and
can be thrown away.
red
2. Wet the sensor by soaking the bottom
(2.5 cm/1") of the probe in HI 7041S electrolyte solution for 5 minutes.
3. Rinse the supllied membrane (HI 76407A)
with some electrolyte while shaking it gently. Refill with clean electrolyte.
4. Gently tap the sides of the
membrane with your finger
tip to ensure that no air
bubbles remain trapped inside. To avoid damaging
the membrane, do not tap
the membrane directly on
the bottom.
5. Make sure that the rubber
O-ring sits properly inside
the membrane cap.
6. With the sensor facing
down, screw the cap clockwise. Some electrolyte will
overflow.
When the probe is not used,
protect the membrane with the
supplied cap.
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