Hanna Instruments HI 8410 Manuel utilisateur

Instruction Manual

HI8410

Dissolved Oxygen

Process Controller

www.hannainst.com

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.

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

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.

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

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

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.

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.

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.)

mA OUTPUT

4 - 20

0 - 20

GR AY

BROWN

BLUE

GREEN

RED

YELLOW

mg/L

short

SET

ALARM

FUSE

220

115

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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