Hanna Instruments HI 8410 User manual

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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.