Bante Instruments PHscan Series User manual

PHscan40 Pocket pH Tester
Instruction Manual
Bante Instruments Inc.

PHscan40
Overview
Thank you for selecting the PHscan series pocket pH tester. This manual provides a step-by-step guide to help you operate the instrument, please
carefully read the following instructions before use.
Installing the Batteries
1. Twist the connector collar counter clockwise, pull the BNC connector away from the tester.
2. Insert the two AAA batteries into the battery compartment, note polarity.
3. Push the BNC connector into the tester and twist the connector collar clockwise until tight.
Connecting the Electrode
1. Take out the pH electrode from carrying case. Insert the BNC connector into the connector socket on tester, rotate and push the connector
clockwise until it locks.
2. Remove the protective cap from the bottom of the electrode. If tiny air bubbles are present inside the pH-sensitive glass membrane, gently
shake the electrode downward to remove air bubbles.
Keypad
Key
Function
• Switch the tester on or off
• Lock the reading, press the key again to resume measurement
• Exit the calibration, setting and return to the pH measurement mode
• Start calibration
• Press and hold the key to enter the setup menu
• Select an option
• Confirm the calibration, setting or displayed option
Display
Icon
Description
When the battery voltage falls below the minimum power requirements, the icon automatically disappears
MEAS
Indicates that the tester is in the measurement mode
CAL
Indicates that the tester is in the calibration mode
SETUP
Indicates that the tester is in the setup mode
ATC
Indicates that the temperature compensation is enabled

PHscan40
Switching the Tester On and Off
•Press and hold the Meas key for about 5 seconds to switch on the tester.
•Press and hold the Meas key to switch off the tester.
•To disable the auto-power off function, refer to the Setup Menu section.
Setup Menu
The PHscan40 tester contains 7 menu items in the setup menu, the following table describes the functions of each option.
Menu
Description
Options
Description
Default
Set the pH buffer group for calibration and auto-recognition
USA (pH 4.01, 7.00, 10.01)
USA
NIST (pH 4.01, 6.86, 9.18)
Set the number of calibration points
1, 2 or 3 points
2 points
Set the temperature unit
Degrees Celsius
°C
Degrees Fahrenheit
Set the temperature of sample
Range: 0 to 100° C
---
When the option is enabled, the tester will automatically
sense a stable reading and lock the measurement
Enable
Disable
Disable
When the option is enabled, the tester will automatically
switch off if no key is pressed within 8 minutes
Enable
Enable
Disable
Reset the tester to factory default settings
Enable
Disable
Disable
Setting the Default Option
1. In the measurement mode, press and hold the Cal key for 5 seconds to enter the setup menu.
2. If necessary, press the Cal key again to select an option.
3. Press the Enter key, the tester saves the current option and moves to the next menu item.
4. Repeat the steps above until the tester returns to the measurement mode.
•During the setting process, press the Meas key, the tester will exit the setup menu and return to the measurement mode.
•If you do not need to set the temperature of sample, press the Enter key to skip the /or /option.
•The option is used to restore the tester back to the factory default settings. If enabled, all of the calibration data and user-specific
settings will be deleted or reset, the tester must be recalibrated.
option
menu
item

PHscan40
Temperature Compensation
For better accuracy, we recommend to enable the manual temperature compensation for measurement and calibration. The tester will calculate
the pH slope with inputted temperature and shows the temperature compensated readings.
1. Press and hold the Cal key to enter the setup menu.
2. Press the Enter key until the display shows /or /.
3. Press the Cal key, the tester enters the temperature setting mode.
4. Press the Cal key again to modify the temperature value.
5. Press the Enter key to save and press the Meas key to return to the pH measurement mode.
pH Calibration
The PHscan40 tester allows 1 to 3 points calibration, we recommend that you perform at least 2 points calibration for accurate measurement,
the tester 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 pH 7.00 or 6.86, otherwise calibration will not be accepted.
For better accuracy, we recommend calibrating the tester regularly. DO NOT reuse the buffer solutions after calibration, contaminants in solution
will affect the calibration and eventually the accuracy of the measurement.
Single Point Calibration
Make sure that you have selected 1 point calibration in the setup menu.
1.1 Press the Cal key, the tester shows "pH 7.00/CAL 1".
1.2 Rinse the electrode with deionized water and place into the pH 7.00 buffer solution. Stir the electrode gently.
1.3 Press the Enter key to begin the calibration. When the reading has stabilized, the display will show "End". Calibration is completed.

PHscan40
2 Points Calibration
Make sure that you have selected 2 points calibration in the setup menu.
2.1 Repeat steps 1.1 through 1.3 above. When the first calibration point is completed, the display will show "----/CAL 2", the tester prompts
you to continue with second point calibration.
2.2 Rinse the electrode with deionized water and place into the pH 4.01 or 10.01 buffer solution. Stir the electrode gently.
2.3 Press the Enter key, the tester automatically recognizes the buffer solution and begins calibration. When the reading has stabilized, the
display automatically shows the pH slope (e.g., 99%) and "End". Second point calibration is completed.
3 Points Calibration
Make sure that you have selected 3 points calibration in the setup menu.
3.1 Repeat steps 1.1 through 1.3 above. When the first calibration point is completed, the display will show "pH4.01/CAL 2", the tester prompts
you to continue with second point calibration.
3.2 Rinse the electrode with deionized water and place into the pH 4.01 buffer solution. Stir the electrode gently.
3.3 Press the Enter key to begin the calibration. When the reading has stabilized, the display will show the pH slope and "pH 10.01/CAL 3".
3.4 Rinse the electrode with deionized water and place into the pH 10.01 buffer solution. Stir the electrode gently. When the reading has
stabilized, the display automatically shows the pH slope and "End". Calibration is completed.
•During the calibration, if the display shows indicating that the measured mV value for the current calibration point deviates by more
than 60 mV (approximately ± 1 pH) from the theoretical value of the pH buffer. The calibration will not be accepted. Please check the
electrode and ensure the buffer solutions are fresh and uncontaminated.
•To exit the calibration without saving calibrated values, press the Meas key.
Measurement
Rinse the electrode with deionized water. Place the electrode into the sample solution and stir gently. Note that the end of the electrode must be
completely immersed into the solution. Wait for the measurement to stabilize and record the reading.
•During the measurement, never wipe the pH-sensitive glass membrane as this will cause static interference, blot dry with a lint-free tissue
to remove waterdrops on electrode.
•If the display shows "----" indicating the measurement exceeds the range, remove the electrode from the sample immediately.
•If the option is enabled in the setup menu, the tester will automatically lock a measurement endpoint and show icon.
Press the Meas key to resume measuring.

PHscan40
Electrode Maintenance
•Since pH electrode is susceptible to contamination, thoroughly clean with deionized water as necessary after each use.
•If your samples contain the oil or grease, soak the electrode in mild detergent or electrode cleaning solution for at least 15 minutes.
•If you do not use the tester for long periods, store the electrode in 3M KCl solution or electrode storage solution.
DO NOT store the electrode in distilled or deionized water, which will deplete the hydration layer of the pH-sensitive glass membrane and
render the electrode useless.
Appendix
Preparation of pH Buffer Solutions
The PHscan40 tester is packaged with pH 4.01/7.00/10.01 buffer sachets required for calibration.
•Open the pH 7.00 buffer sachet, pour the reagent into a 250 ml volumetric flask. Fill the deionized water to the mark and mix the solution
until the reagent is completely dissolved.
•Preparation of pH 4.01 and 10.01 buffer solutions are the same as above.
•Prepared standard buffer solutions should be stored in hermetically sealed glass containers and avoid direct sunlight.
Preparation of Electrode Storage Solution
Dissolve 24.6 grams of analytical grade KCl reagent in 100 ml deionized water. Add pH 4.01 standard buffer and adjust solution to pH 4.
Optional Accessories
Electrodes
Order Code
Description
E201-BNC
General purpose pH electrode, epoxy body, 12 mm (0.47") diameter. For liquids.
E202-BNC
Flat surface pH electrode, epoxy body, 12 mm (0.47") diameter. For semisolid samples.
P11
General purpose pH electrode, glass body, 12 mm (0.47") diameter. For weak corrosive liquids.
Solutions
Order Code
Description
PHCS-USA
pH 4.01/7.00/10.01 buffer solutions, 480 ml
PHCS-OG
Electrode cleaning solution, removes oil and grease contaminants, 480 ml
PHCS-PR
Electrode cleaning solution, removes protein contamination, 480 ml
PHCS-ES
pH electrode storage solution, 480 ml
250 ml

PHscan40
Specifications
pH
Model
PHscan40
Range
-1.00 to 15.00 pH
Resolution
0.01 pH
Accuracy
± 0.01 pH
Calibration Point
1 to 3 points
pH Buffer Option
USA or NIST
Automatic Buffer Recognition
pH 4.01, 7.00, 10.01 or 4.01, 6.86, 9.18
Temperature Compensation
0 to 100° C (32 to 212°F), manual
Other
Specifications
Operating Temperature
0 to 50° C (32 to 122° F)
Storage Temperature
-5 to 60° C (23 to 140° F)
Relative Humidity
< 80% (non-condensing)
IP Rating
IP54
Display
Dual-line LCD, 21 ×21mm (0.82 ×0.82")
Power Requirements
2×1.5V AAA alkaline batteries
Auto-Off
8 minutes after last key pressed
Dimensions
175 (L) ×40 (Dia.) mm (6.89 ×1.57")
Weight
100 g (3.5 oz.)
Disposal
This tester is required to comply with the European Union’s Waste Electrical and Electronic Equipment (WEEE) Directive
2002/96/EC and may not be disposed of in domestic waste. Please dispose of this product in accordance with local
regulations at the collecting point specified for electrical and electronic equipment.
Warranty
The warranty period for tester is one year from the date of shipment. Above warranty does not cover the electrode and
pH buffer solutions. Out of warranty products will be repaired on a charged basis. The warranty on your tester shall not
apply to defects resulting from:
• Improper or inadequate maintenance by customer.
• Unauthorized modification or misuse.
• Operation outside of the environment specifications of the products.
For more information, please contact the supplier.
Office: 4715 Castlewood St., Sugar land, TX 77479, USA
Tel: [phone]
E-mail: [email protected]
Factory: A10, No.2066, Laifang Rd., Shanghai 201615, China
Tel: [phone]
E-mail: [email protected]
www.bante-china.com