Bante Instruments 820 Bedienungsanleitung

Bante 820 Portable Dissolved Oxygen Meter

USER MANUAL

Bante Instruments Inc.

1 IOverview

Introduction

Thank you for selecting the 820 portable dissolved oxygen meter. This

user manual provides a step-by-step guide to help you operate meter,

please carefully read the following instructions before use. Any use

outside of these instructions may invalidate your warranty and cause

permanent damage to the meter.

Environmental Conditions

Before unpacking, ensure that current environmental conditions meet

the following requirements.

•Relative humidity is less than 80%

•Ambient temperature between 0° C (32° F) and 50° C (122° F)

•No potential electromagnetic interference

•No corrosive gas exists

Packing List

The following list describes all components of the meter. If any items

are missing or damaged, contact the supplier immediately.

1 Electrode clip 4 Electrolyte solution

2 820 meter 5 Dissolved oxygen electrode

3 Membrane cap

Meter Overview

1 Sensor connections 4 Membrane keypad

2 Slot for electrode clip 5 Slot for hand strap

3 Display 6 Battery compartment

7 Socket for dissolved oxygen electrode (6-pin DIN)

8 USB-A interface to the computer or power adapter

Display

Icon

Description

Indicates that the meter is in the measurement mode

Indicates that the meter is in the calibration mode

Indicates that the meter is in the setup mode

Indicates that you are viewing the stored readings or a

reading is stored into the memory

When the battery voltage falls below the minimum power

requirements, the icon automatically disappears

Indicates that the measurement is locked

Indicates that the automatic temperature compensation

is enabled

Overview I2

Keypad

Key

Function

• Switch the meter on or off

•Lock or unlock the measurement

•Exit the calibration, settings, data logs and return

to the measurement mode

• Select the % saturation or mg/L mode

• Press and hold the key to enter the temperature

setting

• Start calibration

• Press and hold the key to enter the setup menu

• Store current reading to memory

• Increase value or scroll up through a list of options

• View the data log or calibration log

• Decrease value or scroll down through a list of

options

• Confirm the calibration or displayed option

• Press and hold the key to switch the backlight on

or off

Installing the Batteries

1. Remove the battery compartment cover from the backside of the

meter, insert three AA batteries into the battery compartment,

note polarity.

2. Replace the battery compartment cover to its original position,

push the limiter until it locks.

The meter allows using the 5V DC power adapter (order code: DCPA-

5V) or the USB port on computer as a power supply.

Note, take out the batteries before connecting an external power

supply.

Installing the Electrode Clip

The electrode clip is designed for mounting a sensor, but it is not a

necessary component for meter. If you want to install this accessory,

insert the electrode clip into the slot on the right of the meter.

Switching the Meter On and Off

•Press the Meas key and release to switch on the meter.

•Press and hold the Meas key to switch off the meter.

3 ISetup

Meter Setup

The 820 meter contains an integrated setup menu for customizing the

displayed option to meet measurement requirements. The following

table describes the functions of each menu item.

Menu Item

Option and Description

Calibration Points

Set the number of calibration points.

1 point (default)

2 points

Pressure Coefficient

Set the barometric pressure coefficient according to

the local altitude (refer to page 4).

450 to 850 mmHg (default 760 mmHg)

60.0 to 113.3 kPa (default 101.3 kPa)

Salinity Coefficient

Set the salinity compensation coefficient of sample.

0.0 to 50.0 ppt (default 0.0 ppt)

Measurement Unit

Set the default temperature unit.

Degrees Celsius (default)

Degrees Fahrenheit

Auto-Hold

If enabled, the meter will automatically sense and

lock the measurement endpoint.

Enable

Disable (default)

Auto-Power Off

If enabled, the meter will automatically switch off

if no key is pressed within 30 minutes.

Enable

Disable (default)

Clear Stored Data

Delete all data logs in the memory.

Enable

Disable (default)

Factory Reset

Reset the meter to factory default settings. Note,

the meter must be recalibrated.

Enable

Disable (default)

Setting a Default Option

1. In the measurement mode, press and hold the key to enter the

setup menu. Press the / key to select a menu item.

2. Press the Enter key, the meter shows the current option.

3. Press the / key to select a desired option. Press the Enter

key to save and return to the measurement mode.

To exit the setup menu without saving changes, press the Meas key.

Menu item

Page number

Option

Menu item

Setup I4

Setting the Barometric Pressure

The table below describes the relationship between the altitude and

barometric pressure, make sure to set a compatible parameter before

the calibration or measurement.

Altitude (m)

kPa

mmHg

101.3

760

100

100.1

750

200

98.8

741

300

97.6

732

400

96.4

723

500

95.2

714

600

94.0

705

700

92.8

696

800

91.7

688

900

90.5

679

1000

89.4

671

1100

88.3

662

1200

87.2

654

1300

86.1

646

1400

85.0

638

1500

84.0

630

1600

82.9

622

1700

81.9

614

1800

80.9

607

1900

79.9

599

2000

78.9

592

2100

77.9

584

2200

76.9

577

2300

76.0

570

2400

75.0

563

2500

74.1

556

2600

73.2

549

2700

72.3

542

2800

71.4

536

2900

70.5

529

3000

69.6

522

3100

68.7

515

3200

67.9

509

3300

67.0

502

3400

66.2

496

3500

65.4

490

1. In the measurement mode, press and hold the key to enter the

setup menu.

2. Press the key until the display shows (pressure).

3. Press the Enter key, the meter shows the default pressure unit.

4. If necessary, press the /key to select the "mmHg" or "kPa".

Press the Enter key, the meter shows the default barometric

pressure value.

5. Press the / key to modify the value, press the Enter key to

save.

During the setting process, press the / key once, the setting

value will increase or decrease by 0.1. Press and hold the / key,

the setting value will increase or decrease by 1.

5 ICalibration

Prior to Use

Filling the Electrolyte Solution

1.1 Take out the dissolved oxygen electrode from the carrying case.

Unscrew the membrane cap from the bottom of the electrode,

rinse the inside and outside with distilled water and blot dry.

1.2 Fill the membrane cap halfway with electrolyte solution.

1.3 Screw membrane cap back onto the electrode. Some electrolyte

solution will overflow during this process.

1.4 Check the electrode, ensure that no air bubbles are trapped in the

electrolyte solution and membrane is not creased or damaged.

Polarizing the Electrode

2.1 Insert the connector of the dissolved oxygen electrode into the

connector socket on meter, ensure that the connector is fully

seated.

2.2 Switch on the meter and wait 10 minutes for the electrode to

polarize.

Dissolved Oxygen Calibration

The 820 meter allows 1 or 2 points dissolved oxygen calibration. If you

have selected the single point calibration in the setup menu, we

recommend that you perform a 100% saturation calibration in the.

air-saturated water. If the 2 points calibration is selected, the zero.

oxygen solution needs to be used.

Note: During the calibration and measurement, the temperature sensor

on electrode must be immersed in the sample solution completely, the

solution should keep 0.3 m/s of minimum flow rate to avoid oxygen

starvation at the membrane.

DO Calibration in mg/L Mode

1.1 Press the Mode key to enter the dissolved oxygen concentration

mode and select the 1 point calibration in the setup menu.

1.2 Press the Cal key, the display shows 8.26 mg/L / CAL1 (@25° C).

1.3 Place the dissolved oxygen electrode into the air-saturated water

for 10 minutes and stir gently. Press the Enter key, the meter

begins the calibration, the Calibration icon continuously flashing.

1.4 When the reading has stabilized, the meter will show and

return to the measurement mode.

Temperature sensor

Remove air bubbles

Calibration I6

2 Points Calibration

2.1 Ensure that you have selected 2 points calibration in the setup

menu.

2.2 Press the Cal key and key, the meter shows 0.00 mg/L/ CAL1.

2.3 Place the dissolved oxygen electrode into the zero oxygen solution

for about 10 minutes and stir gently. Press the Enter key to begin

the calibration.

2.4 When the reading has stabilized, the display will show 8.26 mg/L

/ CAL 2 (@25° C). The meter prompts you to continue with second

point calibration.

2.5 Repeat the step 1.3 above until the meter shows .

Calibration is completed.

DO Calibration in % Saturation Mode

3.1 Press the Mode key to enter the % saturation mode and select

the 1 point calibration in the setup menu.

3.2 Press the Cal key, the display shows 100.0% /CAL1.

3.3 Hold the dissolved oxygen electrode in the air at 100% relative

humidity or place the electrode into the air-saturated water for

10 minutes. Press the Enter key, the meter begins the calibration.

3.4 When the reading has stabilized, the meter will show and

return to the measurement mode.

2 Points Calibration

4.1 Ensure that you have selected 2 points calibration in the setup

menu.

4.2 Press the Cal key and the key, the meter shows 0.0%/CAL1.

4.3 Place the electrode into the zero oxygen solution for 10 minutes

and stir gently. Press the Enter key to begin the calibration.

4.4 When the reading has stabilized, the display will show 100.0%

/ CAL2. The meter prompts you to continue with second point

calibration.

4.5 Repeat the step 3.3 above until the meter shows .

Calibration is completed.

To exit the calibration without saving changes, press the Meas key.

Temperature Calibration

1. Place the dissolved oxygen electrode into a solution with a known

accurate temperature.

2. Press and hold the °Ckey to enter the temperature setting.

3. Press the / key to modify the temperature value.

4. Press the Enter key to save.

7 IMeasurement

Measurement

The 820 meter can be used to measure the water, wastewater, brine

and other liquids. If your sample is seawater or water containing large

amounts of salt, make sure to set the salinity coefficient before

measurement. Some gas and steam such as chloride, sulfur dioxide,

sulfureted hydrogen and carbon dioxide can permeate the membrane

via diffusion. Their existence will influence the measurements. If the

sample contains solvent, grease, sulfide and alga, the membrane will

be damaged or eroded.

1. Set the barometric pressure and salinity coefficient in the setup

menu.

2. Rinse the electrode with distilled water, place the electrode into

the sample solution and stir gently.

3. If the Auto-Hold option in the setup menu is enabled, the meter

will automatically lock the measurementendpoint and show HOLD

icon. Press the Meas key to resume measuring.

If the option is disabled, the meter will continuously measure and

update the readings.

4. Wait for the measurement to stabilize and record the reading.

5. When all of the samples have been measured, rinse the electrode

with distilled water.

If the meter shows ---- indicating the measurement exceeds the range,

remove the electrode from the sample solution immediately.

Data Management

The 820 meter is capable of storing and recalling up to 100 data sets.

Storing a Measurement Result

In the measurement process, press the MI key to store the reading

into the memory, the Memory icon appears on the display.

Viewing the Data Logs

1.1 Press the MR key in the measurement mode, the meter shows

the serial number of the stored data.

1.2 Press the key to view the stored data.

1.3 Press the key to view the next data set.

1.4 To exit the data log, press the Meas key.

Serial number

Data Management I8

If the meter does not store any reading, the display will show ---- only.

Clearing the Data Logs

If the memory is full, the meter will show when the MI key

is pressed. To delete the data logs, please follow the steps below.

2.1 Press and hold the key to enter the setup menu.

2.2 Press the key until the meter shows /.

2.3 Press the Enter key, the meter shows /.

2.4 Press the key to select the /.

2.5 Press the Enter key to confirm.

Communication

The 820 meter can transfer the data to a computer or import the data

to Excel by a DAS software. You are able to download this software

from our official website.

Before installation, make sure that the Windows 10 operating system

has been installed on your computer and you have a USB-B2303 data

cable.

Receiving the Data

1. Connect the black port of the data cable to meter and the blue

port to computer.

2. Click the DAS _ECO _Series icon, the system automatically

scans an available communication port and shows a message

box "Found a port on your computer".

3. Click the OK, the application starts.

4. Click the Connect, the screen shows "Port is connected".

5. Click the OK, then click the Receive, the stored data will transfer

to computer automatically.

If your computer can not find a communication port, click the "PL2303

_Prolific_DriverInstaller_v1190.exe" to update the drive program.

Creating an Excel File

When transfer is completed, click the Save as Excel, the readings

in data sheet will automatically convert to Excel file.

Note, once the software is closed, all received data will be lost and

can not be recovered.

Black port

Blue port

9IAppendix

Electrode Maintenance

•Rinse the dissolved oxygen electrode thoroughly with distilled

water after use.

•Do not touch the membrane and always keep it is clean and wet.

•If you do not use the electrode for long periods, screw off the

membrane cap, rinse the electrode anode, cathode, membrane

cap with distilled water and blot dry. Install the electrode and

store dry.

Cathode Anode

Appendix

Optional Accessories

Dissolved Oxygen Electrode and Components

Order Code

Description

DO100

Dissolved oxygen electrode, range: 0 to 20 mg/L

DO-MEM

Membrane cap, 2 PCS/set

Solution

Order Code

Description

DO-ES

Electrolyte solution, 480 ml

Communication and Power Supply

Order Code

Description

USB-2303A

USB connector A to A, 1 m (3.3 ft) cable

DCPA-5V

5V DC power adapter, european standard plug

Preparation of Zero Oxygen Solution

Dissolve 500 mg of the sodium sulfate (Na2SO3) reagent and a small

amount of cobalt (II) chloride hexahydrate (CoCl2•6H2O) in the 250 ml

distilled water, mix the solution until reagent is completely dissolved.

Preparation of Air-Saturated Water

Use an air-pump to blow air into distilled water at least 1 hour, while

stirring the solution.

Meter Specifications

Model

Bante 820

Dissolved Oxygen

Range

0.00 to 20.00 mg/L

Resolution

0.01 mg/L

Accuracy

± 0.5 mg/L

Calibration Point

1 or 2 points

Temperature Compensation

0 to 50° C (32 to 122° F), automatic

Barometric Pressure

Correction

450 to 850 mmHg, 60.0 to 113.3 kPa,

manual

Salinity Correction

0.0 to 50.0 ppt, manual

% Saturation

Range

0.0 to 200.0%

Resolution

0.1%

Accuracy

± 2.0%

Other Specifications

Memory

100 data sets

Communication Interface

USB-A

Operating Temperature

0 to 50° C (32 to 122° F)

Storage Temperature

0 to 60° C (32 to 140° F)

Relative Humidity

< 80% (non-condensing)

Display

LCD, 80 × 60 mm (3.15 × 2.36 in.)

Power Requirements

3 × 1.5V AA alkaline batteries or

5V DC power adapter

Auto-Off

30 minutes after last key pressed

Dimensions

170 (L) × 85 (W) × 30 (H) mm,

(6.69 × 3.35 × 1.18 in.)

Weight

300 g (10.5 oz.)

Troubleshooting

Fault

Cause and Corrective Action

Dissolved oxygen electrode does not connect to the

meter or measured value is out of range.

Drifting erratic

readings

Check whether the membrane cap is contaminated

or the electrolyte solution is depleted.

Electrode is broken.

Replace the dissolved oxygen electrode.

Keypad is not

working

Replace the batteries.

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