BANTE A151 Manual de usuario

A151 Benchtop Conductivity Meter

Instruction Manual

BANTE INSTRUMENTS CO., LTD

A151 Benchtop Conductivity Meter

Introduction

Thank you for selecting the A151 benchtop conductivity meter. This manual provides a step-by-step guide to help you operate the meter, please carefully

read the following instructions before use.

Unpacking

Before unpacking, ensure that the current work environment meets following conditions.

•Relative humidity is less than 80%.

•Ambient temperature is greater than 0°Cand less than 60°C.

•No potential electromagnetic interference.

The following list describes the standard components of the meter. After the unpacking, please check all components are complete. If any are damaged or

missing, please contact nearest distributor.

A151 Conductivity Meter

Electrode Holder

Conductivity Standard Solutions

CON-1 Conductivity Electrode

TP-10K Temperature Probe

DC12V Power Adapter

A151 Benchtop Conductivity Meter

Keypad

The A151 meter has a succinct membrane keypad, names and symbols describe the each function key controls.

KEY

FUNCTION

•Switches the meter ON/OFF.

•Exits the calibration or setting and returns to measurement.

•Selects the measurement mode.

•Sets the temperature of sample (Press and hold the key for 3 seconds).

•Starts calibration.

•Enters the setup menu (Press and hold the key for 3 seconds).

•Locks the measured value.

•Resume measuring.

•Sends data to a printer or computer.

•Stores current reading to memory.

•Increase value or scroll up through the menu item.

•Views the calibration report or data logs.

•Decrease value or scroll down through the menu item.

•Confirms the calibration, settings or displayed options.

Connectors

NO.

CONNECTOR

DESCRIPTION

Used for connecting the 4-pole conductivity electrode

EC/DO

Used for connecting the 2-pole conductivity electrode

°C

Used for connecting the temperature probe

USB

Used for connecting the computer or printer

Used for connecting the power adapter

A151 Benchtop Conductivity Meter

Installing the Electrode Holder

Take out the electrode holder from the packaging. Turn the meter over. Align the base plate of the electrode holder with the circular holes on the meter.

Moderately tighten two screws.

Adjustment of electrode arm

After installation, if the electrode arm automatically rises or falls, you need to adjust the screw until arm locate at any position.

1. Remove the plastic cover from the electrode arm.

2. Use the screwdriver to tighten the screw moderately.

3. Insert the plastic cover to previous position. Installation is completed.

Connecting the Electorde

1. Take out the conductivity electrode from the packaging. Follow the steps below to place the electrode into left or right side of the electrode arm.

1. Insert the electrode

2. Hook up the cable

3. Hook up the cable

A151 Benchtop Conductivity Meter

2. Insert the 6-pin connector into the connector socket labeled EC/DO. After the connection is completed, DO NOT pull on the cable. Always make sure

that the connector is clean and dry.

Connecting the Temperature Probe

1. Place the temperature probe into the circular hole of the electrode arm.

2. Insert the phone plug to the connector socket labeled °C. Ensure the connector is fully seated.

Connecting the Power Adapter

1. Before plugging in the power adapter, ensure that its voltage matches the local main voltage.

2. Insert the connector to the power socket. The meter is now ready for use.

A151 Benchtop Conductivity Meter

Switching the Meter On and Off

•Press and hold the key to switch on the meter, the display shows the measured values.

•Press and hold the key for 3 seconds, the meter will switch off.

To enable the Auto-Power Off feature, please refer to chapter SETUP MENU.

Setup Menu

The A151 conductivity meter contains an integrated setup menu that is used to customize the displayed option to meet measurement requirements. The

following table describes the functions of the menu items.

OPTIONS

DESCRIPTION

DEFAULT

Sample ID

0000 to 9999

Set the sample ID to associate readings with the data log.

0000

Cell Constant

2-pole electrode (K=0.1)

Set the cell constant to match connected electrode.

2-pole

electrode

(K=1)

2-pole electrode (K=1)

2-pole electrode (K=10)

4-pole electrode

Calibration Points

1 to 3 points

Set the number of calibration points.

3 points

Temperature Coefficient

Linear (Range: 0.0 to 10.0%/°C)

Set the temperature compensation type and coefficient.

Linear

(2.1%/°C)

Non-linear

Pure Water Coefficient

Enable

When the option is enabled, pure water coefficient will be

applied automatically for ultra-pure water measurements.

Disable

Reference Temperature

20°C

Set the normalization temperature for conductivity

measurement and calibration.

25°C

TDS Factor

Range: 0.01 to 1.00

Set the default TDS conversion factor.

0.50

Alarm Limits

Enable

Set the high and low limit values to activate alarm

(Range: 0 to 999).

Disable

Calibration Due

Enable

Set the calibration interval to activate alarm (1 to 31 days).

Disable

Temperature Unit

°C

Set the default temperature unit.

°C

°F

Stability Criteria

Standard

Set when a measurement is recognized as stable.

Standard

High-accuracy

Auto-Read

Enable

When the option is enabled, the meter will automatically

sense a stable reading and lock the measurements.

Disable

Auto-Power Off

Enable

When the option is enabled, the meter will automatically

switch off if no key is pressed within 3 hours.

Disable

Date and Time

Year-month-day, hour-minutes

Set the current date and time.

A151 Benchtop Conductivity Meter

Interval Readings

Off

When the option is enabled,the meter will automatically

send the measured data to the computer or printer.

Off

10 seconds

30 seconds

60 seconds

10 minutes

30 minutes

Password

Enable

Set the password protection for calibration and settings.

Disable

Brightness

Low, Mid, High

Set the brightness level of the backlight.

Mid

Clear Stored Data

Enable

Delete all stored readings in the memory.

Disable

Factory Reset

Enable

Reset the meter to factory default settings.

Disable

Setting the default option

1. In the measurement mode, press and hold the key for 3 seconds to enter the setup menu.

2. Press the or key to select the menu item.

3. Press the Enter key, the cursor changes to highlight.

4. Press the or key to select the desired option.

5. Press the Enter key to confirm, the meter returns to the measurement mode. Setting is completed.

Setting the default parameter

The meter provides two methods for parameter settings.

•Press the or key to modify the value, press the Enter key to confirm.

•If the cursor appears below the first digit, press the or key to set the value, press the Enter key to confirm and move to the next digit. Repeat

the steps above until the meter returns to the measurement mode. Setting is completed.

During the setting process, press the or key once, the setting value will increase or decrease gradually. Press and hold the or key, the

setting value will increase or decrease quickly.

Setup example - alarm limits

1. In the measurement mode, press and hold the key for 3 seconds to enter the setup menu.

2. Press the or key to select the “Alarm Limits”.

3. Press the Enter key, the cursor changes to highlight.

4. Press the or key to select the measurement unit, press the Enter key to confirm.

5. Press the or key to set the high alarm value, press the Enter key to confirm.

6. Press the or key to select the measurement unit, press the Enter key to confirm.

7. Press the or key to set the low alarm value, press the Enter key to return to the measurement mode.

A151 Benchtop Conductivity Meter

Temperature Coefficient

The A151 conductivity meter contains two temperature correction methods. The linear temperature correction is appropriate for most samples. If the current

sample is belong to the natural water (e.g., natural ground, well, or surface waters), using the non-linear correction is necessary. Note: non-linear correction

can only be performed at temperature range from 0°Cto 36°C. If the temperature value is out of above range, the meter will show a warning.

To calculate the temperature coefficient, please refer to addendum “How to calculate the temperature coefficient”.

Pure Water Coefficient

The pure water coefficient is used to correct the samples with a conductivity of less than 5µ S/cm. If enabled, the meter will be automatically calculated and

applied coefficient for ultra-pure water measurements.

A151 Benchtop Conductivity Meter

Stability Criteria

The Stability setting allows the user to set when a measurement is recognized as stable by the meter. When the Standard option is enabled, the Stable icon

will quickly appear on the display. When the High-accuracy option is enabled, the icon will take longer to appear, but guarantees high accuracy of the

measurement.

Auto-Read

The Auto-Read feature is used to lock a measurement endpoint. If enabled, the meter will automatically sense a stable reading and lock the measurements.

The HOLD icon appears on the display. Press the Meas key, the meter resumes measuring.

Interval Readings

The Interval Readings is capable of recording the measurements at the predefined time intervals. If enabled, the meter will continue to send measured data

to the printer or computer until the measurement mode is exited. You are able to use the DAS software for receiving the data or viewing the real-time graph.

For more details, please refer to chapter COMMUNICATION.

A151 Benchtop Conductivity Meter

Password

The password protection is used to prevent the unauthorized calibration and settings. If enabled, the user must enter the 4-digit password to access the

calibration or setup menu. If the setting value is 0000, the password protection will invalid.

Unlock or Reset the password

Press and hold the key in the measurement mode, the password input window immediately shows on the display and wait for entering the correct digits.

Press the or key to input the password, press the Enter key to confirm. Once you have successfully entered the setup menu, selecting the “Disable”.

The password will be removed.

Factory Reset

The Factory Reset will restore the meter back to factory default settings. If enabled, all of the calibration data and selected options/parameters will be lost

or reset, the meter must be recalibrated. During the setting process, when the display shows “Are you sure you want to reset the meter?”, press the Enter