Bante Phscan40bnc User manual

PHscan40BNC Pocket pH Tester

Instruction Manual

BANTE INSTRUMENTS LIMITED

PHscan40BNC Pocket pH Tester

Introduction

Thank you for selecting the PHscan40 pocket pH tester. This manual provides a step-by-step guide to help you operate the meter, please carefully read the

following instructions before use. The following list describes the standard accessories of the tester. After the unpacking, please check all accessories are

complete. If any are damaged or missing, please contact nearest distributor.

ACCESSORIES:

●pH Electrode

●pH Buffer Pouches (pH4.01/7.00/10.01)

●AAA Batteries

Keypad

PHscan40 pocket pH tester has a succinct membrane keypad, names and symbols describe the each function key controls.

INDEX:

KEY

FUNCTION

MEAS/HOLD

●Power the tester ON/OFF.

●Freezes the measured value on the display, press the key again to resume measuring.

●In the calibration mode, exits calibration and returns to measurement mode.

CAL

●Press the key to enter the calibration mode.

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

●In the setup mode, press the key to select default options.

ENTER

●Confirms the calibration or selected option.

PHscan40BNC Pocket pH Tester

Display

The tester is equipped with a clear LCD display that used to show measured value, mode indicators and unit indicators.

INDEX:

INDICATOR

DESCRIPTION

MEAS

Indicates tester is in the measurement mode

CAL

Indicates tester is in the calibration mode

SETUP

Indicates tester is in SETUP mode

HOLD

Indicates the measured value has been frozen

ATC

Indicates temperature compensation is enabled

Connecting the pH Electrode

●Take out the pH electrode from the carrying case.

●Insert the connector of electrode into the BNC connector socket on the tester. Rotate and push the connector clockwise until it locks. After

connection is completed, DO NOT pull on the sensor cord. Always make sure that the connector is clean and dry.

Preparing the pH Buffer Solutions

PHscan40 pocket pH tester is packaged with three pH buffer packets required for calibration.

●Open the pH7.00 buffer packet, place the powder into a 250ml volumetric flask. Pour distilled water 250ml to scale line, mix the solution until

reagent is completely dissolved.

●Preparation of pH4.01 and 10.01 standard buffer solutions are the same as above.

●Prepared standard buffer solutions should be stored in hermetically sealed glass containers.

PHscan40BNC Pocket pH Tester

Prior to Use

Remove the protective cap from the bottom of the pH electrode. If the glass sensitive membrane on the electrode dries out, soak the sensor in 3M KCL

solution or tap water for at least 15 minutes. DO NOT use distilled or deionized water, it will shorten the life of sensor.

Power On/Off

●Press MEAS key to turn on the tester, the display shows measured value.

●Press and hold the MEAS key for 5 seconds, the tester will turn off.

●If you do not press any key for 8 minutes, the tester will automatically turn off to conserve energy.

To disable the auto-off function, please read the SETUP MENU section.

Setup Menu

PHscan40 pocket pH tester contains an integrated setup menu that allows you to customize each option to meet measurement requirements.

PARAMETER

DESCRIPTION

OPTIONS

DESCRIPTION

DEFAULT

pH Buffer

USA Standard (pH4.01/7.00/10.01)

●

NIST Standard (pH4.01/6.86/9.18)

Calibration Point

1 point

2 points

●

3 points

Temperature Unit

Degrees Celsius

●

Degrees Fahrenheit

Temperature Setting

Enters the temperature setting mode

Auto-Hold

Automatically freezes a stable reading

Disable

●

Auto-Off

Automatically turn off the tester

●

Disable

Reset

Restore factory settings

Disable

●

……..…. Glass Sensitive Membrane

PHscan40BNC Pocket pH Tester

Setting the Default Parameters

1. Press and hold the CAL key for 3 seconds to enter setup menu, the tester shows default pH buffer option.

2. If necessary, press CAL key again to select the USA or NIST standard. Press ENTER key to confirm, the tester goes to calibration point selection

mode, the display shows “2/CAL” (2 points calibration).

3. Press CAL key to select the number of calibration points (1, 2 or 3 points), press ENTER key to confirm. The tester goes to temperature unit

selection mode, the display shows “oC/UNIT”.

4. Press CAL key to select the temperature unit (oC or oF), press ENTER key to confirm. The tester goes to temperature setting mode, the display

shows “oC/CAL”.

5. Press ENTER key to enter next option, the tester shows “YES/HOLD” indicating that the auto-hold function is enabled.

If the auto-hold function is enabled, the tester will automatically sense a stable endpoint reading and freeze it. If you disable this function, the tester

allows user to freeze the reading by pressing the HOLD key.

6. Press CAL key to enable or disable the auto-hold function, press ENTER key to confirm. The tester shows “YES/OFF” indicating that the auto-off

function is enabled.

Cal

Enter

PHscan40BNC Pocket pH Tester

When the auto-off function is enabled, if you do not press any keys for 8 minutes, the tester will automatically turn off to conserve energy.

7. Press CAL key to enable or disable the auto-off function, press ENTER key to confirm. The tester shows “NO/RST” indicating that do not reset the

tester.

WARNING:

Reset function will restore the tester back to factory default settings, all calibration values and selected parameters will be reset.

8. Press CAL key to enable or disable the reset function, press ENTER key to confirm. The tester returns to measurement mode. Setting is completed.

EXIT THE SETUP MENU:

During the setup mode, press MEAS key, the tester will return to measurement mode immediately.

Temperature Compensation

In order to get accurate results, you need to enable the manual temperature compensation before measurement or calibration.

1. Check the temperature of sample using an accurate thermometer.

2. Press and hold the CAL key for 3 seconds to enter setup menu.

3. Press ENTER key until display shows the “oC/CAL” or “oF/CAL”.

4. Press CAL key to enter the temperature setting mode.

5. Press CAL key again to set temperature value (Resolution: 0.5oC).

6. Press ENTER key to confirm, the display shows next option.

7. Press MEAS key, the tester returns to measurement mode. Setting is completed.

Enter

PHscan40BNC Pocket pH Tester

pH Calibration

PHscan40 pocket pH tester allows up to 3 points calibration. We recommend that you perform at least 2 points calibration for high accuracy measurement.

The tester can automatically recognise and calibrate to following standard buffer values.

●USA Standard Buffer Options: pH4.01, 7.00, 10.01

●NIST Standard Buffer Options: pH4.01, 6.86, 9.18

Single point calibration should only be carried out with pH7.00 or pH6.86, otherwise calibration will not be accepted.

The tester must be calibrated prior to first use or new electrode replaced. To ensure accuracy, regular calibration is recommended. Do not reuse calibration

solution after calibration, contaminants in solution will affect the calibration and eventually the accuracy of the measurement.

SINGLE POINT CALIBRATION:

1.1 Make sure that you have selected 1 point calibration in the setup menu.

1.2 Rinse the pH electrode with distilled water. Press CAL key, the tester shows “pH7.00/CAL1” or “pH6.86/CAL1”.

1.3 Dip the pH electrode into the pH7.00 (or pH6.86) standard buffer solution, the end of the sensor must be completely immersed into the calibration

solution. Stir the electrode gently.

1.4 Press ENTER key to confirm. Wait for the measured value to stabilize, the display shows “END”. Single point calibration is completed.

2 POINTS CALIBRATION:

2.1 Make sure that you have selected 2 points calibration in the setup menu.

2.2 Repeat steps 1.2 to 1.4 above. When the first calibration point is completed, the display will show “CAL2”. The tester prompts you to continue with

second point calibration.

2.3 Rinse the pH electrode with distilled water. Dip the electrode into the pH4.01 or 10.01 (pH4.01 or 9.18) standard buffer solution. Stir the sensor

gently.

2.4 Press ENTER key to confirm. Wait for the measured value to stabilize, the display shows electrode slope and “END”. Second point calibration is

completed.

Cal

Enter

PHscan40BNC Pocket pH Tester

3 POINTS CALIBRATION:

3.1 Make sure that you have selected 3 points calibration in the setup menu.

3.2 Repeat steps 1.2 to 1.4 above. When the first calibration point is completed, the display will show “pH4.01/CAL2”. The tester prompts you to

continue with second point calibration.

3.3 Rinse the pH electrode with distilled water. Dip the electrode into the pH4.01standard buffer solution. Stir the sensor gently.

3.4 Press ENTER key to confirm. Wait for the measured value to stabilize, the display shows electrode slope and “pH10.01/CAL3” (or “pH9.18/CAL3”).

3.5 Rinse the pH electrode with distilled water again. Dip the electrode into the pH10.01 (or pH9.18) standard buffer solution. Stir the sensor gently.

3.6 Press ENTER key to confirm. Wait for the measured value to stabilize, the display shows electrode slope and “END”. Calibration is completed.

EXIT THE CALIBRATION:

During the calibration process, press MEAS key, the tester will return to measurement mode immediately.

pH Measurement

●Rinse the pH electrode thoroughly with distilled water.

●Dip the electrode into the sample solution, stir the sensor gently.

●Wait for the reading to stabilize, record the measured value on the display.

Enter

PHscan40BNC Pocket pH Tester

Hold Function

PHscan40 pocket pH tester contains two data hold modes. When the Auto-Hold function is enabled, the tester will automatically sense a stable endpoint

reading and freeze it, “HOLD” indicator appears on the display. If the Auto-Hold function is disabled, press HOLD key, the tester will immediately freeze

currently displayed value. Press the key again to resume measuring.

Electrode Care and Maintenance

Since pH electrode is susceptible to dirt and contamination, clean as necessary depending on the extent and condition of use.

AFTER MEASURING:

Rinse the pH electrode in distilled water, store the electrode into the electrode storage solution.

CLEANING THE ELECTRODE:

●Salt deposits: Soak the electrode in warm tap water to dissolve deposits, then thoroughly rinse with distilled water.

●Oil or Grease film: Wash the electrode bulb gently in some detergents and water. If necessary, using the alcohol to clean the electrode bulb, then

rinse with distilled water. Place the sensor in the electrode storage solution for 30 minutes.

●Clogged reference junction: Heat a diluted KCl solution to 60 oC to 80oC. Place the sensing part of the electrode into the heated solution for about 10

minutes. Allow the electrode to cool in some unheated KCl solution.

●Protein deposits: Prepare a 1% pepsin solution in 0.1M of HCL. Place the electrode in the solution for 10 minutes. Rinse the sensor with distilled

water.

REACTIVATING THE ELECTRODE:

If stored and cleaned properly, the electrode should be ready for immediate use. However, a dehydrated bulb may cause sluggish response. To rehydrate the

bulb, immerse the electrode in a pH4.01 buffer solution for 10 to 30 minutes. If this fails, the electrode requires activation.

●Soak the pH electrode in 0.1M HCl for 5 minutes.

●Remove and rinse with deionized water, then place in 0.1M NaOH for 5 minutes.

●Remove and rinse again, and soak in electrode storage solution for 30 minutes.

HOW TO PREPARE THE ELECTRODE STORAGE SOLUTION:

Dissolve 22.365 grams of potassium chloride reagent (KCL) in the 100mL distilled water. Stir the solution until the solution has thoroughly mixed.

Hold

Meas

PHscan40BNC Pocket pH Tester

Replacing the Batteries

If the battery indicator is disappeared during the use, you need to replace the batteries immediately.

1. Twist the electrode collar counter clockwise, pull the BNC connector out from the tester.

2. Insert two “AAA” batteries into the battery compartment, note polarity.

3. Align the slot on the connector, push the BNC connector into the tester.

4. Twist the electrode collar clockwise until it is tight.

PHscan40BNC Pocket pH Tester

Optional pH Electrodes

PHscan40 pocket pH tester is equipped with a general purpose pH electrode, if it can not fully meet your measurement requirements, please refer to the

table below to select an applicable sensor.

SAMPLE TYPE

P11

P12

P13

P14

P16

P17

P18

P19

P20

P21

Agar

●

Beer

●

Blood Products

●

Bread, Dough

●

Cement

●

Cosmetics

●

Dairy Products

●

Education

●

Fats/Cream

●

Field Use

●

Fish Products

●

Lab Flasks

●

Low Ionic

●

Meat, Cheese

●

Micro Samples

●

Paint

●

Photographic

Soil

●

Surface

●

Test Tubes

●

Tris Buffer

●

Viscose Samples

●

Troubleshooting

LCD DISPLAY

CAUSE

CORRECTIVE ACTION

Electrode dried out

Soak the pH electrode in 3M KCL solution or tap water for 10 minutes

Measured value is out of range

Check the electrode whether clogged, dirty or broken

Incorrect pH buffer solutions

Using the fresh pH buffer solutions for calibration

Electrode is broken

Replace the pH electrode module

PHscan40BNC Pocket pH Tester

Specifications

Model

PHscan40BNC

pH Range

-1.00~15.00pH

pH Accuracy

± 0.01pH

Resolution

0.01pH

Calibration Points

1 to 3 points

Calibration Solutions

USA (pH4.01/7.00/10.01) or NIST (pH4.01/6.86/9.18)

Temperature Compensation

0~100°C, 32~212°F, Manual

Connector

BNC

Operating Temperature

0~60°C, 32~140°F

Power Requirements

2× 1.5V "AAA" Batteries

Battery Life

Approximately 200 hours

Dimensions

175(L)× 40(Dia.)mm

Weight

100g

Hazardous Substance Statement

Bante Instruments Limited is committed to the reduction and eventual elimination of all hazardous substances in both the manufacturing process and finished

products we supply. We have an active manufacturing and procurement program to minimize and eliminate the use of harmful heavy metals such as cadmium,

lead, mercury and the like. New technologies and design parameters are also promoting these efforts and we expect to have little or no such materials in our