Bante-510 Benchtop Conductivity Meter User Manual

Bante-510 Benchtop Conductivity Meter

Overview

Introduction

Thank you for selecting the 510 benchtop conductivity 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.

•  The 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.

510 meter

Electrode arm
9V DC power adapter
CON-1 conductivity electrode
TP-10K temperature probe
Conductivity standard solutions 84 µS/cm, 1413 µS/cm, 12.88 mS/cm

Meter Overview

1        Sensor connections

2        Base plate of electrode arm
3        Display
4        Membrane keypad

Connectors

1        Socket for conductivity electrode (6-pin mini DIN)

2        Socket for temperature probe (3.5 mm jack)
3        Socket for power adapter

Display

Keypad

Temperature Calibration

The 510 meters 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.

1.  Connect the temperature probe to the meter and place it into a solution with a known accurate temperature.
2.  Press the °C key to enter the temperature setting.
3.  Press the key to modify the temperature value.
4.  Press the Enter key to save.

Installing the Electrode Holder

Take out the electrode arm from the accessory box. The base plate of the electrode arm has a circular hole, the electrode arm has a connecting rod. Insert the connecting rod into the circular hole and swivel the electrode arm 90 degrees. The electrode holder is now ready to swing into the desired position.

Adjusting the Electrode Arm
After installation, if the electrode arm automatically rises or falls, you are able to adjust the screw until the arm locates at any position.

1.  Remove the plastic cover from the right side of the electrode
2.  Use the screwdriver to tighten the screw moderately.
3.  Insert the plastic cover to the previous position.

Connection

Connecting the Conductivity Electrode

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

Insert the 6-pin connector into the connector socket labeled COND. Ensure the connector is fully seated.
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

Place the temperature probe into the circular hole located at the center of the electrode arm.
Insert the jack plug to the connector socket labeled ATC. Ensure
Insert the jack plug to the connector socket labeled ATC. Ensure the connector is fully seated.

Connecting the Power Adapter
Insert the connector of the power adapter to the power socket. 3.2 Plug the 9V DC power adapter into the wall outlet.

Prior to Use
Soak the conductivity electrode for about 10 minutes in tap water to remove dirt and oil stains on the sensor surface.
10 minutes

Switching the Meter On and Off

Meter Setup
The 510 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.

Set the cell constant to match connected conductivity electrode.

____| K = 0.1
| K = 1 (default)
| K = 10
| Custom
|
| Calibration Points

Set the number of calibration points.

|
| 1 point (default)
| 2 points
| 3 points

| Temperature Coefficient

Set the temperature coefficient for linear temperature compensation.

| 0.0 to 9.9%/°C (default 2.1)
| TDS Factor

Set the default TDS conversion factor.

|
| 0.1 to 1.0 (default 0.5)
| | 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 3 hours.

| |
| |
| | ____                    Enable
| | Disable (default)
| | Factory Reset

Reset the meter to factory default settings. Note,

the meter must be recalibrated.

| |
| |
| | ____                    Enable

| | Disable (default)

Setting the Default Option

1.  In the measurement mode, press and hold the
2.  Press the key to select an option, press the Enter key to confirm and switch to the next menu item.
3.  Repeat the steps above until the meter returns to the measurement mode.

Temperature Compensation

The temperature compensation has a large effect on the conductivity measurement. If enabled, the meter will use the measured conductivity and temperature readings to calculate the results and automatically compensate for the selected reference temperature. If the temperature coefficient is set to 0, the temperature compensation will be disabled and the meter only shows the actual conductivity at the measured temperature.

Automatic Temperature Compensation

Connect the temperature probe to the meter, the ATC icon appears on the display, the meter is now switched to the automatic temperature compensation mode. Refer to the Connecting the Temperature Probe section on page 3.

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 the °C key to enter the temperature setting.
2.  Press the key to modify the temperature value.
3.  Press the Enter key to save.
4. Pressing and holding the key will make the value change faster.

Selecting a Conductivity Electrode
The 510 meter is capable of using three types of conductivity electrodes. Before the calibration and measurement, ensure that you have selected a suitable electrode according to the anticipated sample conductivity. The following table lists the selectable electrode and its effective measurement ranges.

Conductivity Calibration

Automatic Calibration
The 510 meter allows 1 to 3 points conductivity calibration. Before calibration, ensure that selected cell constant (K = 0.1, 1, 10) matches connected electrode. If you have selected the manual calibration
the meter will wait to enter a cell constant.
For better accuracy, we recommend performing 3 points calibration or selecting a standard solution closest to the sample conductivity you are measuring. The meter will automatically detect the standard solution and prompt the user to perform the calibration. The following table shows the default standard solution for each measurement range.

If you have changed the conductivity electrode, the meter must be recalibrated. Every electrode has a different cell constant.

Single Point Calibration

• Ensure that you have selected 1 point calibration in the setup menu. 1.1 Press the Cal key, the display shows —-/CAL1, the meter waits
•  Rinse the conductivity electrode with distilled water, then rinse with a small amount of standard solution.
•   Place the electrode (and temperature probe) into the standard solution, stir gently to remove air bubbles trapped in the slot of the sensor.
• The meter will automatically show the calibration standard (e.g., 1413 µ S/cm). Press the Enter key, the default calibration value begins flashing.
• If necessary, press the key to modify the calibration value, press the Enter key to confirm, and move to the next digit. When the setting is completed, make sure that the displayed value matches the calibration standard.
• Press the Enter key, the Calibration icon begins flashing. When the reading has stabilized, the meter will show and return to the measurement mode.

Multipoint Calibration

Ensure that you have selected 2 or 3 points calibration in the setup menu.

1. When the first calibration point is completed, the display will show CAL2. The meter prompts you to continue with the second point calibration.
2.  Repeat steps 1.2 through 1.4 above until the meter shows .

Manual Calibration
The 510 meter provides an easy manual calibration mode. If the conductivity standard solution is not ready, you are able to use this method to calibrate the meter.

1. Press and hold the key to enter the setup menu.
2.  Press the key until the display shows
3.  Press the Enter key, the default value begins flashing.
4.  Press the key to set the cell constant, press the Enter
5. key to confirm until the setting values stop flashing.
6.  Press the Meas key to return to the measurement mode.
7.  Performing the conductivity calibration will simultaneously calibrate the corresponding TDS value.
8.  To exit the calibration without saving changes, press the Meas key.

Temperature Calibration
The 510 meters 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.

1.  Connect the temperature probe to the meter and place it into a solution with a known accurate temperature.
2.  Press the °C key to enter the temperature setting.
3.  Press the key to modify the temperature value.
4.  Press the Enter key to save.

Measurement

1. Press the Mode key, the display shows (conductivity), (TDS) and automatically switch to the corresponding measurement mode. If the TDS (total dissolved solids) mode is selected, ensure that you have set a correct conductivity-to-TDS conversion factor in the setup menu (default 0.5).
2.  Rinse the conductivity electrode with distilled water. Place the electrode (and temperature probe) into the sample solution and stir gently. Ensure that no air bubbles on the sensor surface.
3.  If the Auto-Hold option in the setup menu is enabled, the meter will automatically sense a stable reading and lock measurement, the icon appears on the display. Press the Meas key to resume measuring.
4. If the option is disabled, the meter will continuously measure and update the readings. Wait for the measurement to stabilize and record the reading.
5.  When all of the samples have been measured, rinse the electrode with distilled water.
6. If the meter shows indicating the measurement exceeds the range, replace a conductivity electrode that is appropriate for the conductivity range of the sample solution you are measuring.

Electrode Maintenance

• Rinse the conductivity electrode thoroughly with distilled water after use.
• Do not touch the platinum black coating on the sensor surface and always keep it clean.
• If there is a build-up of solids inside the sensor, remove carefully, then recalibrate the electrode.
• If you do not use the electrode for long periods, wipe clean with a lint- free tissue and store the electrode in a dry and cool area.
• If your electrode is model CON-10, store the electrode with tap water. This sensor needs to be kept wet always.

 Appendix

Preparation of Conductivity Standard Solutions

1.  Place the analytical grade potassium chloride (KCl) in a beaker and dry in an oven for about 3 hours at 105° C (221° F), then cool to room temperature.
2.  Add the reagent to a 1-liter volumetric flask according to the instructions in the table below.

Fill the distilled water to the mark, mix the solution until the reagent is completely dissolved.

Calculating the Cell Constant

• Refer to the Manual Calibration section to set the cell constant to 1.00.
•  Place the electrode into a standard solution and record the reading.
•  Calculate the cell constant using the following formula.
• Where:
• K = Cell constant
• Cstd = Value of conductivity standard solution Cmeas = Measured value
• G = Raw cell constant (0.1, 1 or 10)

Calculating the Temperature Coefficient

1. Do not connect the temperature probe to the meter.
2.  Press and hold the °C key to enter the temperature setting.
3.  Press the key to set the temperature to 25° C and press the Enter key to confirm.
4.  Place the conductivity electrode into the sample solution, record the temperature value TA and conductivity value CTA.
5.  Condition the sample solution and electrode to a temperature TB that is about 5 to 10° C different from TA. Record the conductivity value CTB.
6.  Calculate the temperature coefficient using the formula below.
7. TC = Temperature coefficient
8. CTA = Conductivity at temperature A CTB = Conductivity at temperature B TA = Temperature A
9. TB = Temperature B

Calculating the TDS Conversion Factor
To determine the TDS factor of the sample solution using the formula below.

For example:
Dissolve 64 grams of the potassium chloride (KCl) reagent in 1 liter of distilled water. If measured conductivity is 100 mS/cm, then TDS factor is 0.64.

Conductivity to TDS Conversion Factors

Optional Accessories

Temperature Probe

TP-10K

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

Temperature Probe

Power Supply

Meter Specifications

Calibration Solutions

| 10 µS/cm, 84 µS/cm, 1413 µS/cm,

12.88 mS/cm, 111.8 mS/cm

Temperature Compensation

| 0 to 100°C (32 to 212°F), manual or automatic
Temperature Coefficient| 0.0 to 9.9%/°C
Reference Temperature| 25°C
Cell Constant| K = 0.1, 1, 10 or custom
TDS
Range| 0.00 to 10.00 ppt (max. 200 ppt)
Resolution| 0.01, 0.1, 1
Accuracy| ±1% F.S.
TDS Factor| 0.1 to 1.0 (default 0.5)
Temperature|
Range| 0 to 105°C (32 to 221°F)
Resolution| 0.1°C (0.1°F)
Accuracy| ±1°C (±1.8°F)
Calibration Point| 1 point
Other Specifications|
Operating Temperature| 0 to 50°C (32 to 122°F)
Storage Temperature| 0 to 60°C (32 to 140°F)
Relative Humidity| < 80% (non-condensing)
Display| LCD, 135 × 75 mm (5.3 × 2.9 in.)
Power Requirements| 9V/400mA DC power adapter
Auto-Off| 3 hours after last key pressed

Dimensions

| 210 (L) × 205 (W) × 75 (H) mm,

(8.2 × 8.0 × 2.9 in.)

Weight| 1.5 kg (3.3 lb)

Troubleshooting

Soak the conductivity electrode in tap water for

about 10 minutes.

|
| Measurement exceeded the maximum range. Check the electrode and sample.
Drifting erratic readings| Check whether electrode is contaminated, clogged or broken.

| Setting value does not match calibration solution. Reset the calibration value or check the calibration solution.
| Electrode is broken.

Replace the conductivity electrode.

Disposal
This product 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 the domestic waste. Please dispose of the product in accordance with local regulations at the collecting point specified for electrical and electronic equipment.

Warranty

The warranty period for the meter is one year from the date of shipment. The above warranty does not cover the electrode and standard solutions. Out of warranty products will be repaired on a charged basis. The warranty on your meter shall not apply to defects resulting from:

• Improper or inadequate maintenance by the customer
•  Unauthorized modification or misuse
•  Operation outside of the environment specifications of the products.

References

• Bante Instruments - Professional pH, Ion, Conductivity, Dissolved Oxygen, Turbidity Meters & Lab Equipments Manufacturer

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