Bante Instruments PHscan40BNC User manual

Bante 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 product in the coming years.
We welcome our customers suggestions on how to speed up these efforts.
Hazardous Substance Statement
Warranty
The warranty period for PHscan series tester is 12 months from the date of
shipment. Above warranty does not cover pH electrode module and calibration
solutions. For more information, please contact nearest authorized distributor.
BANTE INSTRUMENTS LIMITED
E-mail: [email protected]
Phone: [phone]
Website: www.bante-china.com
The information in this document is subject to change without notice.
Copyright © Bante Instruments Limited, 2013. All rights reserved.
PHscan40BNC Pocket pH Tester
Instruction Manual
Technology to create the future...
BANTE INSTRUMENTS LIMITED

01 02
PHscan40
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.
Keypad
PHscan40 tester includes 3 multifunction keys, names and symbols describe
the function key controls.
The tester is equipped with a clear LCD display used to show measured values,
mode indicators and unit indicators.
Display
— Power the tester ON/OFF.
— Freezes the measured values on the display, press the
key again to resume measuring.
— In calibration mode, exits calibration and returns to
measurement mode.
— Press the key to enter calibration mode.
— Press and hold the key to enter the system menu.
— In setup mode, press the key to select default options.
— Confirms the calibration or displayed option.
KEY FUNCTION
MEAS/HOLD
CAL
ENTER
HOLD
DESCRIPTION
Indicates tester is in the measurement mode
Indicates tester is in the calibration mode
Indicates tester is in SETUP mode
Indicates the measured value has been frozen
Indicates temperature compensation is enabled
MEAS
CAL
SETUP
ATC
INDICATOR
PHscan40
Inserting the Batteries
Before using the tester, insert batteries into the battery compartment, follow
the procedure outlined below.
—
— Insert two “AAA” batteries into the battery compartment, note polarity.
—
— Installation is completed.
3.
Twist the electrode collar anticlockwise, pull the BNC connector away from
the tester.
Align the slot on the BNC connector, push the connector into the tester.
Twist the electrode collar clockwise until it is tight.
Connecting the pH Electrode
1. Take out the pH electrode from the carrying case.
2. Insert the connector of the 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.
PHscan
POCKET
PH TESTER
+
Slot

03
PHscan40 PHscan40
04
— Remove the protective cap from the bottom of the pH electrode.
— If the electrode bulb dries out, soak the electrode in storage solution or tap
water for at least 15 minutes. Do not use ,
—
—
Power On/Off
— Press MEAS key to turn on the tester, the display shows measured values.
—
—
Prior to Use
distilled or deionized water it will
shorten the life of sensor.
Preparation of pH Standard Buffer Solutions
The 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.
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 SYSTEM MENU section.
4.01 7.00 10.01
Hold
Meas
The tester contains an integrated system menu that allows you to customize
each displayed option to meet personal preference.
System Menu
PARAMETER OPTIONS
pH Buffer USA Standard (pH4.01, 7.00, 10.01, Default)
NIST Standard (pH4.01, 6.86, 9.18)
Single point calibration
Calibration Point
2 points calibration (Default)
3 points calibration
Degrees Fahrenheit
Temperature Unit Degrees Celsius (Default)
Do not use this function (Default)
Reset Restores the parameters back to default settings
Disables the auto-off function
Auto-Off Function Enables the auto-off function (Default)
Disables the auto-hold function (Default)
Auto-Hold Function Enables the auto-hold function
Temperature Setting Sets the temperature of sample

06
Cal
Enter
Cal
Enter
Cal
1. Press and hold the CAL key for 3 seconds to enter system menu, the tester
shows default pH buffer option.
Press CAL key again to select the available standard.
Press ENTER key to confirm, the tester goes to calibration point selection
mode, the display shows “2/CAL” (2
3. Press CAL key to select the number of calibration points.
Press ENTER key to confirm, the tester goes to temperature unit selection
o
mode, the display shows “ C/UNIT”
o o
Press CAL key to select the temperature unit ( C or F).
2.
points calibration).
.
4.
PHscan40 PHscan40
05
Enter
Cal
Enter
Cal
Press ENTER key to confirm, the tester goes to temperature setting mode,
o
the display shows “ C/CAL”.
If you do not want to modify current temperature value, press ENTER key,
the tester will go to next option.
5. Press CAL key, the tester enters the temperature setting mode, the display
shows current temperature reading.
6. Press CAL key again to set temperature value, press ENTER key to confirm.
The tester shows “YES/HOLD” the auto-hold function is
enabled.
— If the auto-hold function is enabled, the tester will automatically sense a
stable end-point reading and will freeze it.
— If you disable this function, the tester allows you to freeze the reading by
pressing the HOLD key.
7. Press CAL key to enable or disable the auto-hold function.
indicating that

07 08
8. Press ENTER key to confirm, the tester shows “YES/OFF”
auto-off function is enabled.
When the auto-off function is enabled,
9. Press CAL key to enable or disable the auto-off function.
10. Press ENTER key to confirm, the tester shows “NO/RST”
do not reset the tester.
Reset function will restore the tester back to factory default parameters,
calibration values and selected system parameters will be lost or reset.
11. Press CAL key to enable or disable the reset function.
12. Press ENTER key to confirm, the tester returns to measurement mode.
System settings is completed.
indicating that the
if you do not press any keys for 8
minutes, the tester will automatically turn off to conserve energy.
indicating that
WARNING:
all
Enter
Enter
Cal
Cal
PHscan40 PHscan40
Temperature Compensation
1. Check the temperature of sample using an accurate thermometer. Record
the measured value.
2. Press and hold the CAL key to enter the system menu.
o o
3. Press ENTER key until display shows the “ C/CAL” or “ F/CAL”.
4. Press CAL key to enter the temperature setting mode.
o
5. Press CAL key again to set temperature value (Displayed value ±0.5 C).
6. Press ENTER key to confirm, the display shows next option.
allows up to 3 points calibration.
tester can
—
—
—
In order to get accurate results, you need to enable the manual temperature
compensation function before pH measurement or calibration.
7. Press MEAS key, the tester returns to measurement mode. Setting is
completed.
automatically recognise and calibrate to following standard
buffer values.
USA Standard: pH4.01, 7.00, 10.01
NIST Standard: pH4.01, 6.86, 9.18
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.
pH Calibration
During pH mode, the tester We recommend
that you perform at least 2 points calibration for high accuracy measurement.
The
Single point calibration should only be carried out with pH 7.00 or pH 6.86,
otherwise calibration will not be accepted.
Enter
Cal

09 10
Single Point Calibration
1. Make sure that you have selected 1 point calibration in the system menu.
2. Rinse the pH electrode with distilled water, press MEAS key to turn on the
tester.
3. ,
ait for the measured value to stabilize, the
display shows “END”. Single point calibration is done.
2 Points Calibration
Make sure that you have selected 2 points calibration in the system menu.
Repeat steps 2 to 5 above. When the first calibration point is completed, the
display will show “CAL2”. The tester prompts you to continue with second
point calibration.
Press CAL key the tester shows “pH7.00/CAL1”(or “pH6.86/CAL1”).
4. Dip the pH electrode into the pH7.00 (or pH6.86) standard buffer solution,
the end of the electrode must be completely immersed into the calibration
solution. Stir the tester gently.
5. Press ENTER key to confirm. W
—
—
Cal
Enter
PHscan40 PHscan40
Rinse the electrode with distilled water,
ait for the measured value to stabilize, the
display shows electrode slope and “END”. Second point calibration is done.
3 Points Calibration
Make sure that you have selected 3 points calibration in the system menu.
Repeat steps 2 to 5 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.
Rinse the electrode with distilled water,
ait for the measured value to stabilize, the
display shows electrode slope and “pH10.01/CAL3” (or “pH9.18/CAL3”).
Rinse the electrode with distilled water,
ait for the measured value to stabilize, the
display shows electrode slope and “END”. The tester returns to the pH
measurement mode. Calibration is completed.
— dip the electrode into the pH4.01
or 10.01 (pH4.01 or 9.18) standard buffer solution.
— Press ENTER key to confirm. W
—
—
— dip the electrode into the pH4.01
standard buffer solution.
— Press ENTER key to confirm. W
— dip the electrode into the pH10.01
(or pH9.18) standard buffer solution.
— Press ENTER key to confirm. W
Enter
Enter
Enter

EXIT THE CALIBRATION:
During the calibration, if you want to exit calibration mode. Press MEAS key,
the tester will immediately return to measurement mode.
pH Measurement
Rinse the electrode thoroughly with distilled water,
ait for the to stabilize, record
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 and reference junction in distilled water, store the
sensor into the electrode storage solution.
CLEANING THE ELECTRODE:
Salt deposits:
Dissolved the deposits by immersing the electrode in the tap water for 10 to
15 minutes, then thoroughly rinse with distilled water.
Oil or Grease film:
Wash electrode pH bulb gently in some detergent and water, rinse electrode
tip with distilled water.
1. press MEAS key to turn
on the tester.
2. Dip the electrode into the sample solution, stir the electrode gently.
3. W reading the measured value on the display.
Auto-Hold Function
When the auto-hold function is enabled, the tester will automatically sense a
stable end-point measured value and freezes it, “HOLD” indicator appear on the
display. Press HOLD key, the tester resumes measuring.
Manual Hold Function
1. During the measurement, press HOLD key,
, “HOLD” indicator will appear on the display.
2. Press key again to release the measured reading, you can continue to take
measurement.
Electrode Care and Maintenance
—
—
the tester immediately freezes
current displayed value
Hold
Meas
PHscan40 PHscan40
11 12
—
—
Clogged reference junction:
o
Heat a diluted KCl solution to 60 to 80 C, place the sensing part of the sensor
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, set the electrode in the solution
for 5 to 10 minutes, rinse the electrode with distilled water.
REACTIVATING THE ELECTRODE:
If stored and cleaned properly, the pH 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. Never touch
or rub glass bulb, contact builds up an electro-static charge.
Optional
Troubleshooting
Electrodes
ORDER CODE APPLICATION
P11
P11-DJ
P11-HA
P12
P13
P15
General purpose pH electrode
Non-aqueous samples
Photographic processing solutions
Measuring the sample in the tube
Micro-volume samples
Low conductivity liquids
P16
P17
P18
P19
P21
Semi-solid substances
Colloids
Tris buffers
Flat surface pH electrode
Slurries
P22 High temperature liquids
— Electrode dried out.
Soak the electrode in tap water for 10 minutes.
— Measured value is out of range.
Check the electrode whether clogged, dirty or broken.
module
LCD DISPLAY CAUSE

Specifications
Appendix 1: How to prepare electrode storage solution
1. Dissolve 223.6 grams of potassium chloride reagent (KCL) in 1 liter distilled
water.
2. Pour the 50mL of KCL solution into beaker.
3. Pour the 50mL of pH4.01 standard buffer solution into the same beaker.
4. Stir the solution until the solution has thoroughly mixed, preparation is done.
Model
pH Range
Resolution
Accuracy
Calibration Points
Calibration Solutions
Up to 3 points
USA (pH4.01, 7.00, 10.01)
NIST (pH4.01, 6.86, 9.18)
PHscan40BNC
-1.00~15.00pH
0.01pH
±0.01pH
Temperature Compensation
Auto-Off
Operating Temperature
LCD Display
o o
0~100 C, 32~212 F, Manual
After 8 minutes from last key press
o o
0~60 C, 32~140 F
Custom LCD
Connector
Power Requirement
BNC
2 1.5V “×AAA” Batteries
Dimensions
Weight 100 grams
185(L) 40(Dia.)mm×
— Incorrect buffer used or contaminated buffer solution.
Use fresh pH buffer solutions for calibration.
— Electrode is broken.
Replace the electrode .module
— Keypad is not working properly.
Replace the batteries.
PHscan40 PHscan40
13 14
Appendix 2: Standard pH Buffers
The following tables shows the various pH values at different temperature of
the solution during the calibration.
NIST STANDARD:
USA STANDARD:
o
Temperature ( C)
0
5
10
15
20
25
30
35
40
45
50
55
60
pH4.01
4.01
4.01
4.01
4.00
4.00
4.01
4.01
4.02
4.03
4.04
4.06
4.08
4.10
pH6.86
6.98
6.95
6.92
6.90
6.87
6.86
6.85
6.84
6.84
6.83
6.83
6.83
6.84
pH9.18
9.46
9.40
9.33
9.28
9.23
9.18
9.14
9.11
9.07
9.04
9.01
8.99
8.96
o
Temperature ( C)
0
5
10
15
20
25
30
35
40
45
50
60
pH4.01
4.01
4.01
4.01
4.00
4.00
4.01
4.01
4.02
4.03
4.04
4.06
4.10
pH7.00
7.12
7.09
7.06
7.04
7.02
7.00
6.99
6.98
6.97
6.97
6.97
6.98
pH10.01
10.32
10.25
10.18
10.12
10.06
10.01
9.97
9.93
9.93
9.86
9.83
9.79