Hanna Instruments HI 8410 User manual

1
Instruction Manual
HI8410
Dissolved Oxygen
Process Controller
www.hannainst.com

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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 necessary information for
correct use of the instruments, as well as a precise idea of their versatility
in a wide range of applications.
If you need additional technical information, do not hesitate to e-mail
us at [email protected].
All rights are reserved. Reproduction in whole or in part is prohibited
without the written consent of the copyright owner.

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TABLE OF CONTENTS
Preliminary Examination.................................................................4
General Description.........................................................................4
Functional Description HI8410........................................................5
DO Probes......................................................................................8
Specifications HI8410....................................................................9
Connections..................................................................................10
Operational Guide.........................................................................12
Taking Measurements with HI8410...............................................15
Calibration Procedure....................................................................16
Diagnostic Tests............................................................................16
LED Indication..............................................................................17
Probe Maintenance & Cleaning......................................................18
Accessories...................................................................................18

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PRELIMINARY EXAMINATION
GENERAL DESCRIPTION
Remove the instrument from the packing material and examine it carefully
to make sure that no damage has occurred during shipping. If there is any
damage, please contact your local Hanna Instruments Office.
The meter is supplied complete with:
• Mounting brackets
• Transport splash-proof cover
• Instructions manual
• Quality Certificate
Note: Conserve all packing material until the instrument has been
observed to function correctly. Any defective item must be returned
in its original packing.
H8410 is a panel-mounted DO controller designed for simplicity of use
in a wide range of industrial process applications.
Dissolved Oxygen is indicated in mg/L (ppm) or in % of saturation in
accordance with the selection switch on the back panel. The temperature
can be measured in the range from -5 to 50 °C. The Dissolved Oxygen
readings are automatically compensated for the temperature effects on
the oxygen solubility and membrane permeability. Moreover, the salinity
compensation feature allows the determination of Dissolved Oxygen even
in salty waters.
The instruments are designed with a standard DIN panel mount with
membrane keypads and large LCD with backlight on the front, and
provide a series of auto-diagnostic functions.
Probes, power supply, contacts and recorders are connected on the rear
panel through screw terminals.
For control applications use the HI76410/4 or HI76410/10 galvanic
probes. The DO probe is provided with a membrane covering the gal-
vanic sensor and a built-in thermistor for temperature measurement and
compensation. The Oxygen that passes through the membrane causes an
electric current flow, from which the oxygen concentration is determined.
Other features include: recorder output in 0-20 mA or 4-20 mA configu-
ration; LED indicators which identify whether the controller is in operation
mode or setup selection mode; overtime control function; hysteresis
setting. The instrument is supplied with a plastic front cover and two
mounting brackets. Power cables are not included.
Note: In order to avoid erroneous readings never use both 0-20 mA
and 4-20 mA recorder outputs at the same time.

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FUNCTIONAL DESCRIPTION HI8410
KEYPAD:
MEASURE To read measurements and enable diagnostic tests
∆ALARM To display and set the tolerance of the alarm
SET To display and set the working dosing point
SALINITY g/L To display and set the salinity factor
(active only in mg/L range)
CAL To enter in calibration mode
100% TEST Diagnostic function (active only in %DO range)
°C To display the temperature reading
When a key is pressed, the corresponding LED lights up to indicate that
the function is active.
TRIMMERS:
CAL For 100% DO calibration
SALINITY To set the salinity concentration (g/L)
∆ALARM To set the alarm tolerance
SET COARSE To coarsely adjust the set point
SET FINE To finely adjust the set point
LEDS:
% DO ToindicatethattheDOisdisplayedin%ofsaturation
mg/L To indicate that the DO is displayed in mg/L
SET To indicate that the dosage is active
∆ALARM To indicate an alarm condition
DOSING SWITCH To indicate that the continuous ON or OFF mode is
selected from dosing switch

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Unplug the instrument from power supply before replacing the fuse.
Only one of recorder output connections (0-20 mA or 4-20 mA)
can be used at a moment. Leave unconnected the unused terminal.
SWITCHES:
OFF/AUTO/ON To select the dosing mode:
• OFF - dosing is disabled
• AUTO - automatic dosage, depending on
setpoint and reading values
• ON - dosing always active
1. DO probe connection terminals
2. Range selection: mg/L or %DO
3. SET terminals for connection to a dosing pump
4. ALARM terminals for connection to an external alarm device
5. Power supply terminals
6. Fuse holder
7. mA OUTPUT terminals for connection to a recorder
8. Hysteresis set knob (0.5 to 2.4 mg/L)
9. Disable overtime dosing connection
10. Overtime dosing set knob (about 5 to 60 min)
REAR PANEL OF HI8410

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MECHANICAL DIMENSIONS OF HI8410
Front view of the panel-mounted unit
These dimensions show the cutout size for the installation.
Side view of the panel-mounted unit
Adjustable location brackets (supplied with the meter) allow the indicator
to slide into the cutout and will hold the unit securely in place. 190 mm
(7.50”) is the minimum amount of room required to install the indicator
with the cables connected.

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DO PROBES
All Hanna Instruments DO probes are shipped dry. To hydrate the probe
and prepare it for use proceed as follows:
1. Remove the black & red plastic cap. This cap is used for shipping
purposes only and can be thrown away.
2. Insert the supplied O-ring in the membrane
(see figure).
3. Rinse the supplied membrane (HI76410A) with electrolyte while
shaking it gently. Refill with clean electrolyte. Gently tap the
membrane over a surface to ensure that no air bubbles remain
trapped. To avoid damaging the membrane, do not touch it with
your fingers.
4. With the sensor facing down screw the cap clockwise to the end
of the threads. Some electrolyte will overflow.

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SPECIFICATIONS HI8410
Range
0.0 to 50.0 mg/L (ppm) O2
0 to 600 % O2
-5.0 to 50.0 °C
Resolution 0.1 mg/L or 1% (O2) / 0.1 °C
Accuracy ±1% of reading (O2)
±0.2 °C excluding probe error
Calibration Manual, one point, in saturated air
Temp. Compensation Automatic, from -5 to 50 °C
(23 to 122 °F)
Salinity Compensation 0 to 51 g/L (resolution 1 g/L)
Probe (not included) HI76410/4 with 4 m cable or
HI76410/10 with 10 m cable
Recorder Output 0 to 20 mA or 4 to 20 mA (isolated)
Setpoint Relay
and Alarm Relay
1, isolated, 2A, Max. 240V,
resistive load, 1,000,000 strokes
Setpoint Range 5 to 600 % O2
0.5 to 50.0 mg/L (ppm) O2
Alarm Range 0.5 to 5.0 mg/L (ppm) O2
Hysteresis Range 0.5 to 2.4 mg/L (ppm) O2
Dosing Control OFF/AUTO/ON with selection switch
Over Dosing Control
Adjustable, from 5 min to 60 min with
knob or Disable by wire strap - on real
panel
Backlight Continuous ON
Power Supply 115 or 230 Vac; ± 10%
(user selectable); 60/50 Hz
Enclosure
Black anodized aluminum body;
front and back with ABS;
transparent splash-proof front cover
Environment -10 to 50 °C (14 to 122 °F); RH 95%
Panel Cutout 141 x 69 mm (5.6 x 2.7’’)
Weight 1 kg (2.2 lb.)

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mA OUTPUT
4 - 20
0 - 20
GR AY
BROWN
BLUE
GREEN
RED
YELLOW
mg/L
short
SET
ALARM
FUSE
220
115
L
mg/L
short
SET
ALARM
CONNECTIONS
REAR CONNECTIONS FOR HI8410
• Power Connection Terminals
4-screw-terminal-strip for connection
to a 3-wire power cable according to
the indicated voltage (115 or 230V).
• Probe Connection
For connection of the HI76410 DO
probe. Connect the wires according
with the indicated color.
• Range Selection
To select mg/L range make a short with
a jumper wire between the terminals
(1, 2). To select %DO range leave
terminals 1, 2 unconnected.
• Set Contacts
Dosing pumps or other control equip-
ment may be connected to the “SET”
(Max. 2A, 240 V) terminals (3, 4).
These contacts act only as a “dry”
switch allowing electrical continuity,
not as a power supply.
• Alarm Contacts (terminals 5, 6)
During normal operation these termi-
nals remain closed.
If the measured DO level is not within
the tolerance of the set value, the
alarm contact is open. These contacts
act only as a switch. See also page 15.
• Recorder Output (terminals 1, 2, 3)
These contacts are used for connection
to a recorder output. The output
can be 0-20 mA or 4-20 mA and is
proportional to the measured Dissolved
Oxygen values.

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HI 8410 DO Controller
COARSE
FINE
°C
100%
TEST
CAL
SALINITY
g/L
SALINITY
OFF/AUTO/ON
mg/L
%DO
MIN MAX
HYSTERESYS
short
OVER TIME
OFF
MIN MAX
OVER TIME
DOSING
HYSTERESYS
Connect the “+” wire from the recorder to terminal 1 on the instrument
and the other wire (common) to terminal 2 for 4-20 mA recorder output
or terminal 3 for 0-20 mA recorder output.
Note: Only one recorder output connection is permitted. In order to
avoid malfunction leave unconnected the unused terminal.
•Overtime dosing
When enabled this feature ensures that
overdosage is avoided. Select a desired
maximum dosage period. If the dosage relay
is active more than the selected period an
alarm condition is activated and the dosage
relay is deactivated.
To leave the overtime dosage alarm status
change the position of the OFF/AUTO/ON
switch to OFF and then to AUTO again. The
overtime counter is restarted.
To set the overtime dosing period rotate the
overtime knob to the proper position. The
time can be set between approx. 5 min to
60 min (from MIN to MAX position).
To disable the overtime dosage feature
make a short with a jumper wire between
the terminals of the proper connectors. (see
picture, terminals 1, 2)
•Hysteresis knob
Put the hysteresis knob in the desired po-
sition. The dosage will be active according
to the DO reading, set point value and the
hysteresis set value.
DOSING MODE SELECTION
The DOSING switch and the corresponding right
side LED on the front panel are used to select
and indicate the dosing mode.
OFF mode
The dosage is disabled. The corresponding
DOSING MODE LED blinks (right side of the
switch).

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HI 8410 DO Controller
COARSE
FINE
°C
100%
TEST
CAL
SALINITY
g/L
SALINITY
OFF/AUTO/ON
mg/L
%DO
HI 8410 DO Controller
COARSE
FINE
°C
100%
TEST
CAL
SALINITY
g/L
SALINITY
OFF/AUTO/ON
mg/L
%DO
OPERATIONAL GUIDE
AUTO mode
The dosage is activated and deactivated according
with the selected setpoint. The corresponding
DOSING MODE LED is off.
Be sure that the DOSING switch is in AUTO posi-
tion when the meter is in normal operating mode.
ON mode
The dosage is always activated. The corresponding
DOSING MODE LED blinks.
INITIAL PREPARATION & INSTALLATION
Material needed:
• a 3-wire power cable to connect HI8410
Ensurethecontrollerhasbeencalibrated.EnsuretheDOprobeisimmersed
in the sample to be tested.
The DO reading can be displayed in % air saturation or in ppm (mg/L)
according to the range selection. The corresponding LED is ON.
For accurate dissolved oxygen measurements a water flow of at least
5-7 cm/sec is required. In this way a constant replenishment of the
oxygen-depleted membrane surface is ensured.
Accurate readings are not possible in still water.
Note: For some particular applications, such as fish farming,
the membrane can be sterilized with stabilized iodine (20 to
50 ppm), typically used for this purpose.
For use in harsh environments, it is recommended to protect the
membrane with the optional HI76410-0 sleeve. The response
time will slightly slow down.

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HI 8410 DO Controller
COARSE
FINE
°C
100%
TEST
CAL
SALINITY
g/L
SALINITY
üüüüü
mg/L
%DO
GR AY
BROWN
BLUE
GREEN
RED
YELLOW
mg/L
short
SET
ALARM
Ensure that the HI76410 DO probe
is connected to the meter according
with the colors indicated on the mask.
OPERATING INFORMATION
All parameters are set through the front
panel keys and trimmers.
When any key is pressed, the corre-
sponding LED lights up to indicate that
the function is active.
SET POINT
To set the working point of the control-
ler, press the SET key. The display will
indicate the current set value.
Use a small screwdriver to adjust the
COARSE and FINE trimmers until the
desired value is displayed in units
according with the range selected
(the corresponding %DO or mg/L
LED is ON).
The dosing will be active when the
DO reading is lower than the set point
(set point + hysteresis overpassed =
stop dosing; set point = start dosing).
SALINITY g/L SET
(mg/L range only)
Oxygen measurements can be
compensatedfor salinityconcentration
and this correction value can be set
by the user.
Select the mg/L mode by using the
corresponding switch (rear panel).

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HI 8410 DO Controller
COARSE
FINE
°C
100%
TEST
CAL
SALINITY
g/L
SALINITY
OFF/AUTO/ON
mg/L
%DO
HI 8410 DO Controller
COARSE
FINE
°C
100%
TEST
CAL
SALINITY
g/L
SALINITY
OFF/AUTO/ON
mg/L
%DO
Press the SALINITY g/L and the display will show the salinity. Use a small
screw driver to adjust the SALINITY trimmer to display the desired salinity
value (within the 0 to 51 g/L range).
ALTITUDE COMPENSATION (mg/L range only)
When salinity compensation is not required (i.e. not salty water), the
SALINITY trimmer can be used to set the altitude correction value.
Enter the mg/L mode.
Press the SALINITY g/L button. Turn the SALINITY trimmer to display the
salinity value corresponding to the desired altitude.
See below table for reference:
ALTITUDE g/L ALTITUDE g/L
250 m 6 1250 m 26
500 m 11 1500 m 31
750 m 17 1750 m 36
1000 m 22 2000 m 40
ALARM
Press the “∆ALARM” key and the
display will show the set tolerance for
the alarm.
Use a small screwdriver to adjust the
“∆ALARM” trimmer until the desired
tolerance is displayed.
For example, if the set value is 10 mg/L
and a ∆Alarm of 2 mg/L is set, an
alarm will be activated every time the
measured value is lower than 8 mg/L.
When an alarm occurs, the “ALARM”
LED lights up.

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HI 8410 DO Controller
COARSE
FINE
°C
100%
TEST
CAL
SALINITY
g/L
SALINITY
OFF/AUTO/ON
mg/L
%DO
HI 8410 DO Controller
COARSE
FINE
°C
100%
TEST
CAL
SALINITY
g/L
SALINITY
OFF/AUTO/ON
mg/L
%DO
TAKING MEASUREMENTS WITH HI8410
The alarm contacts of HI8410 remain closed during normal operation.
If the measured conductivity level is not within the tolerance of the set
value, the alarm contact will be open.
HYSTERESIS SET
Turn the hysteresis knob (rear panel) in the desired position (from 0.5
to 2.4 mg/L range).
The dosage will be active according to the DO reading set point value
and hysteresis set value.
After selecting the range (mg/L or %DO), setting the working point,
hysteresis, salinity factor and alarm value, press the “MEASURE” key.
The DO value of the test solution will be displayed.
If the reading is out of range the instrument displays:
TEMPERATURE MEASUREMENT
Pressandholdthe“°C”keyandthedisplayshouldindicatethetemperature
of the tested solution.

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HI 8410 DO Controller
COARSE
FINE
°C
100%
TEST
CAL
SALINITY
g/L
SALINITY
OFF/AUTO/ON
mg/L
%DO
HI 8410 DO Controller
COARSE
FINE
°C
100%
TEST
CAL
SALINITY
g/L
SALINITY
OFF/AUTO/ON
mg/L
%DO
Calibration is a very simple 1-point procedure, performed in air, only
in %DO range.
Ensure the probe is ready for measurements, i.e. the membrane is filled
with electrolyte (see “Probe Preparation” section for details).
Iftheinstrument isseton the%DO range(themg/L rangeselection switch
on the rear panel is open) simply turn the CAL trimmer to display 100%.
If the instrument is set on the mg/L range press and hold down the CAL
key to enter %DO range and turn the CAL trimmer to display 100%. After
CAL key is released the instrument returns to mg/L range.
If the environmental relative humidity is lower than
30%, pour some deionized water (approx. 3 mm) in
the white cap supplied with the membrane. Insert the
probe in the cap and calibrate.
Keep the probe in vertical position to avoid any contact of the membrane
with the water.
Note: For best accuracy, calibration should be performed on the
measurementsite,andthe probeshouldbeatthesametemperature
as the air.
After replacing the membrane or the electrolyte solution, wait a
few minutes for the reading to stabilize.
CALIBRATION PROCEDURE
DIAGNOSTIC TESTS
The HI8410 controllers are designed with built-in diagnostic functions
to enable the user to check and troubleshoot the instrument. The checks
performed are through the front panel keys and can be used to isolate
the cause of malfunction.
Press the “MEASURE” key before proceeding
with the following tests.
100% Test
Pressand holdtheCAL keyand thenpressthe 100%TESTkey, the display
should indicate a value in the interval between 30% and 200% DO.

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AllLEDsabovethekeysornearswitchesindicatethestateofeachfunction,
whether it is active or the display is indicating the mode.
LEDS
% DO It is on if the selected range is %DO.
mg/L It is on if the selected range is mg/L..
OFF/AUTO/ON It is on when the switch is in OFF (dosage disabled)
or in ON (dosage continuous enabled) position.
SET In MEASURE mode it is OFF or blinking (25% ON)
inaccordance withthe dosagerelay status(inactive/
active).
In SET mode it is ON or blinking (75% ON) in
accordance with the dosage relay status (inactive/
active).
∆ALARM In MEASURE mode it is OFF or blinking (25% ON)
inaccordancewiththealarmstatus(inactive/active).
In ∆ALARM set mode it is ON or blinking (75% ON)
inaccordancewiththealarmstatus(inactive/active).
MEASURE It is ON while the instrument is in MEASURE mode.
SALINITY g/L It is ON while the instrument is in SALINITY set
mode.
100% TEST It is ON when the 100% TEST key is pressed.
°C It is on when the °C key is pressed and the
temperature is displayed.
LED INDICATION

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ACCESSORIES
PROBE MAINTENANCE & CLEANING
For a top performance probe, it is recommended to replace the membrane
every 2 months and the electrolyte once a month.
Proceed as follows:
• Unscrew the membrane by turning it counterclockwise.
•Rinse the supplied spare membrane (HI76410A) with some
electrolyte solution while shaking it gently. Refill with clean
electrolyte.
•Gently tap the membrane over a surface to ensure that no air
bubbles remain trapped.
•With the sensor facing down screw the cap clockwise to the end
of the threads. Some electrolyte will overflow.
If any deposit scales the sensors, gently brush the sensor surface with
the supplied scouring pad, while paying attention to not damage the
plastic body.
HI76410/4 Galvanic DO probe with built-in temperature
sensor and 4 m cable
HI76410/10 Galvanic DO probe with built-in temperature
sensor and 10 m cable
HI76410-0 Protective sleeve for HI76410 probes series
HI76410A/P Membrane for HI76410 probes series, 5 pcs.
HI7042S Electrolyte solution, 30 ml bottle
HI710015 Shockproof rubber boot, blue color
HI731326 Calibration screwdriver (20 pcs)

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All Hanna Instrumentsmeters are warranted for two years against defects
in workmanship and materials when used for their intended purpose and
maintained according to instructions.
The probes are warranted for a period of one year.
This warranty is limited to repair or replacement free of charge.
Damages due to accident, misuse, tampering or lack of prescribed
maintenance are not covered.
If service is required, contact your local Hanna Instruments Office.
If under warranty, report the model number, date of purchase, serial
number and the nature of the failure. If the repair is not covered by the
warranty, you will be notified of the charges incurred.
If the instrument is to be returned to Hanna Instruments, first obtain
a Returned Goods Authorization Number from the Customer Service
department and then send it with shipment costs prepaid.
When shipping any instrument, make sure it is properly packaged for
complete protection.
WARRANTY
Hanna Instruments reserves the right to modify the design,
construction or appearance of its products without advance notice.
RECOMMENDATIONS FOR USERS
Before using this product, make sure it is entirely suitable for your
specific application and for the environment in which it is used. Any
variation introduced by the user to the supplied equipment may degrade
the meters' performance. For yours and the meter's safety do not use
or store the meter in hazardous environments.

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Printed in ROMANIA MAN8410 10/18
World Headquarters
Hanna Instruments Inc.
Highland Industrial Park
584 Park East Drive
Woonsocket, RI 02895 USA
www.hannainst.com
Local Office
Hanna Instruments Inc.
Highland Industrial Park
584 Park East Drive
Woonsocket, RI 02895 USA
Phone: [phone]
Fax: [phone]
e-mail: [email protected]