Bante Instruments 220 Manuel utilisateur

Bante 220 Portable pH Meter

USER MANUAL

Bante Instruments Inc.

1 IOverview

Introduction

Thank you for selecting the 220 portable pH meter. This user manual

provides a step-by-step guide to help you operate the 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.

1 220 meter 4 pH electrode

2 Electrode clip 5 Temperature probe

3 pH buffer solutions

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 pH or ORP electrode (BNC)

8 Socket for temperature probe (3.5 mm jack)

9 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

If the electrode slope exceeds the allowed range after

calibration, 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 pH or mV 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 220 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

2 points

3 points (default)

pH Buffer Group

Set the pH buffer group for calibration and auto-

recognition.

USA (default)

NIST

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.

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

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

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

5. 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

Temperature Compensation I4

Connecting the Electrode

1. Take out the pH electrode from the carrying case. Insert the BNC

connector into the connector socket on meter, rotate and push

the connector clockwise until it locks.

2. Remove the protective cap from the bottom of electrode. If tiny

air bubbles are present inside the pH-sensitive glass membrane,

gently shake the electrode downward to remove air bubbles.

Temperature Compensation

For better accuracy, we recommend the use of either a sensor with a

built-in or a separate temperature probe. The meter will calculate the

pH slope with measured temperature and show the temperature

compensated readings.

Automatic Temperature Compensation

Connect the temperature probe to meter (refer to figure 1). The ATC

icon immediately appears on the display, the meter is now switched

to the automatic temperature compensation mode.

Manual Temperature Compensation

If the meter does not detect a temperature probe, the degrees Celsius

icon (°C) will show on the display indicating the meter is switched to

the manual temperature compensation mode. To set the temperature

value follow the steps below.

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

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

3. Press the Enter key to save.

Press and hold the / key will make the value change faster.

Temperature Calibration

The 220 meter is supplied with a temperature probe for measurement

and temperature compensation. If the measured temperature reading

differs from that of an accurate thermometer, the probe needs to be

calibrated.

•Make sure that the temperature probe is connected to meter and

place into a solution with a known accurate temperature.

•Wait for the measurement to stabilize.

•Refer to the Manual Temperature Compensation section,

repeat steps 1 through 3.

(Figure 1)

pH-sensitive glass

membrane

3M KCl solution

5 ICalibration

pH Calibration

The 220 meter allows up to 3 points pH calibration. We recommend

that you perform at least 2 points calibration for high accuracy

measurement. The meter will automatically recognize and calibrate

to following standard buffer values.

USA Standard Buffers

pH 4.01, 7.00, 10.01

NIST Standard Buffers

pH 4.01, 6.86, 9.18

Single point calibration should only be carried out with the pH7.00 or

6.86, otherwise calibration will not be accepted.

Make sure to calibrate the meter when attaching a new pH electrode

or during first use. Do not reuse the buffer solutions after calibration,

contaminants in solution will affect the calibration and eventually the

accuracy of the measurement.

Stir the pH buffer and sample solutions at a uniform rate that will help

you get most accurate readings.

Single Point Calibration

1.1 Ensure that the meter is in the pH measurement mode and you

have selected 1 point calibration in the setup menu.

1.2 Press the Cal key, the meter shows 7.00/CAL 1 or 6.86/CAL 1,

depending on the selected pH buffer group.

1.3 Rinse the pH electrode with distilled water, place the electrode

(and temperature probe) into the pH 7.00 buffer solution, stir

gently to create a homogeneous solution.

1.4 Press the Enter key, the Calibration icon begins flashing.

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

return to the measurement mode.

Multipoint Calibration

2.1 Ensure that you have selected 2 or 3 points calibration in the

setup menu.

2.2 Repeat steps 1.2 through 1.4 above. When the first calibration

point is completed, the display will show ----/CAL 2. The meter

prompts you to continue with second point calibration.

2.3 Rinse the pH electrode with distilled water, place the electrode

(and temperature probe) into the next buffer solution (e.g., pH

4.01).

The meter will automatically recognize the buffer solution and

begin the calibration, the Calibration icon continuously flashing.

Calibration I6

2.4 When the reading has stabilized, the display will show ----/CAL3.

The meter prompts you to continue with third point calibration.

2.5 Repeat the step 2.3 above until the meter shows .

Calibration is completed.

•During the calibration, if the display shows ---- indicating the

meter is waiting for recognizing the pH buffer solution.

•If the display shows , please check the pH electrode and

ensure the buffer solutions are fresh and uncontaminated.

•If the calculated electrode slope is not between 70% to 110%,

icon will disappear from the display, you should

consider replacing the electrode.

•To exit the calibration without saving changes, press the Meas

key.

Viewing the Calibration Log

3.1 Press the MR key in the measurement mode and press the key

until the meter shows ELE /P-2 (Electrode /Page 2).

3.2 Press the Enter key, the meter shows the zero-point offset.

3.3 Press the key to view the calibration point 1

3.4 Press the key to view the calibration point 2.

3.5 Press the key to view the electrode slope.

3.6 To exit the calibration log, press the Meas key.

If the meter is not calibrated, the display will show ---- only.

Offset

Calibration

point

Slope

7 IMeasurement

Measurements

pH Measurement

1.1 Rinse the pH electrode with distilled water. Place the electrode

(and temperature probe) into the sample solution and stir gently.

Note, the pH-sensitive glass membrane and liquid junction must

be completely immersed into the solution.

1.2 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.

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

1.4 When all of the samples have been measured, rinse the electrode

according to the instructions in the Electrode Maintenance.

•During the measurement process, never wipe the pH-sensitive

membrane as this will cause static interference, blot dry with a

lint-free tissue to remove waterdrops on electrode.

•If the meter shows ---- indicating the measurement exceeds the

range, remove the electrode from the sample immediately.

•If your sample is pure water, low ionic or low conductivity water,

we recommend measuring the pH in the smallest sample volume

possible or adding 0.3 ml of the 3M KCl to 100 ml of the sample

solution. Note, only high purity KCl can be used.

mV Measurement

2.1 Press the Mode key to switch the meter to mV mode.

2.2 Rinse the electrode and place into the sample solution, stir gently.

Record the reading when the measurement is stable.

Data Management

The 220 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

/(Log/Page 1).

1.2 Press the Enter key, the meter shows the serial number of the

stored data.

1.3 Press the key to view the stored data.

Serial number

Data Management I8

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

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

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 automatically 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 220 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

9IElectrode Maintenance

Electrode Maintenance

Cleaning the pH Electrode

Since pH electrode is susceptible to contamination, thoroughly clean

as necessary after each use.

•General Cleaning

Rinse the pH electrode with distilled water and soak in 3M KCl

solution.

•Salt Deposits

Dissolve the deposit by immersing the electrode in warm tap

water. Rinse the electrode with distilled water and soak in 3M

KCl solution.

•Oil or Grease

Place the electrode in the detergent or ethanol solution for 15

minutes. Rinse the electrode with distilled water and soak in 3M

KCl solution.

•Protein

(1) Add 1% pepsin to 0.1M HCl solution.

(2) Place the electrode in above solution for 15 minutes.

(3) Rinse the electrode with distilled water and soak in 3M KCl

solution.

•Clogged Liquid Junction

(1) Heat a diluted KCl solution to 60° C (140° F).

(2) Place the electrode into the heated solution for 10 minutes.

(3) Allow the electrode to cool in unheated KCl solution.

Reactivating the Electrode

If the pH-sensitive membrane has dried out, the electrode response

will become sluggish. Immerse the electrode in a pH 4.01 buffer

solution for about 30 minutes to rehydrate. If this fails, the electrode

requires activation.

1. Soak the electrode in a 0.1M of HCl for 10 minutes.

2. Remove and rinse with distilled water, then place into a 0.1M of

NaOH for 10 minutes.

3. Remove and rinse again, and soak in 3M KCl solution for at least

6 hours.

If these steps fail to restore the response, replace the electrode.

Storing the Electrode

•For best results, always soak the electrode in 3M KCl solution.

•If above solution is not available, use a pH 4.01 buffer solution.

•DO NOT store the electrode in distilled or deionized water that

will deplete the hydration layer of the pH-sensitive membrane

and render the electrode useless.

•If you do not use the electrode for a period longer than 1 month,

store the electrode in storage solution.

Appendix

Optional Accessories

pH Electrodes

Order Code

Description

E201-BNC

For general purpose applications

E202-BNC

For measuring the flat surface samples

P11

For measuring the non-high temperature liquids

P11-LiCl

For measuring the non-aqueous samples

P11-NA

For measuring the biofuels

P13

For measuring the micro-volume samples

P15

For measuring the low conductivity samples

P16

For measuring the liquids with Tris buffers

P18

For measuring the slurries or soils

P19

For measuring the semisolids

P21

For measuring the colloids

P22

For measuring the high temperature liquids

ORP Electrode

Order Code

Description

501

For the sample with strong redox potential

502

For the sample with weak redox potential

504

For the high temperature samples (< 100° C/212° F)

Temperature Probe

Order Code

Description

TP-10K

3.5 mm jack plug, 1 m (3.3 ft) cable

Solutions

Order Code

Description

PHCS-USA

pH 4.01, 7.00, 10.01 buffer solutions, 480 ml

PHCS-ES

pH electrode storage solution, 480 ml

PHCS-OG

Removes oil and grease contaminants, 480 ml

PHCS-PR

Removes protein contamination, 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

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