BANTE BI-680 Industrial Dissolved Oxygen Controller User Manual

BANTE BI-680 Industrial Dissolved Oxygen Controller

Overview

Introduction
Thank you for selecting the BI-680 dissolved oxygen controller. This user manual provides a step-by-step guide to help you operate the meter, please carefully read the following instructions before use.

Environmental Conditions
Before the installation, ensure that current environmental conditions meet the following requirements.

• Relative humidity is less than 80%
• Ambient temperature between 5°C (41°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.

• BI-680 dissolved oxygen controller
• IE-80T industrial dissolved oxygen electrode
• Membrane cap and electrolyte solution

Installation

Safety Warning

• BI-680 meter shall be installed and operated only in the manner specified in this user manual.
• Only skilled, trained or authorized person should carry out installation, setup and operation of meter.
• The rear panel of meter has two screw terminals for connecting the 24V DC power supply. Make sure to cut off the main power before installation and maintenance.
• Once the power supply cable is connected to the meter, DO NOT touch any screw terminals.

Installing the Meter

• Cut out a square hole approximately 91 × 91 mm (3.58 × 3.58 in.) in the mounting panel.
• Remove the mounting bracket, place the meter into the square hole.
• Replace the mounting bracket and push the meter forward until it is fully seated on the mounting plate.

Installing the Electrode

• Take out the dissolved oxygen electrode from the packaging. Unscrew the membrane cap from the bottom of the electrode, rinse the inside and outside with distilled water and blot dry.
• Fill the membrane cap halfway with electrolyte solution.
• Screw membrane cap back onto the electrode. Some electrolyte solution will overflow during this process.
• Check the electrode, ensure that no air bubbles are trapped in the electrolyte solution and membrane is not creased or damaged.
• Wrap Teflon tape to the electrode body threads.
• Insert the electrode into the mounting position and slowly turn clockwise until secure. Hand tighten the electrode to prevent liquid leakage.

Connection

Meter Overview

Display

Keypad

Setup

Meter Setup
The BI-680 meter contains an integrated setup menu for customizing the displayed option to meet measurement requirement. The following table describes the functions of each menu item.

•  If the high or low alarm is enabled, the meter will be activated when the measurement exceeds specified limit. Note, this option can not enter the same values.
• If the hysteresis is enabled, the meter will prevent rapid contact switching when the measurement is fluctuating near the set point. For example, you have set the high alarm at 20 mg/L and hysteresis value at 0.1 mg/L. When the measurement overshoots the 20.1 mg/L, the meter will activate an external device. When the measurement drops to 19.9 mg/L, the device will switch off.
• The default RS485 communication is 4.00 to 10.00 mg/L corresponds to the 4.00 to 20.00 mA.

Setting a Default Option

1. In the measurement mode, press and hold the key to enter the setup menu.
2. Press the key to select a menu item, press the Enter key to confirm.
3. Press the key to select an option or set a value, press the Enter key to save. To exit the setup menu without saving changes, press the key.

Calibration and Measurement

The following table describes the relationship between the altitude and barometric pressure, make sure to set a compatible parameter before the calibration and measurement.

Temperatuare Compensation
The BI-680 meter is supplied with an industrial dissolved oxygen electrode. When the wires of electrode are connected to the meter, the display will show ATC icon immediately. The meter is now switched to the automatic temperature compensation mode.

Temperature Calibration
During the measurement, if the measured temperature reading differs from that of an accurate thermometer, the electrode needs to be calibrated.

1. Place the electrode 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.

Dissolved Oxygen Calibration
The BI-680 meter is able to perform either 1 or 2 points calibration. For single point calibration, we recommend that you perform 100% saturation calibration in the air-saturated water. If the 2 points calibration is selected, the zero oxygen solution needs to be used.
Single Point Calibration

• Make sure that you have selected 1 point calibration in the setup menu.
• Press the Cal key, the display shows 100%/CAL1.
• Hold the dissolved oxygen electrode in the air at 100% relative humidity or place the electrode into the air-saturated water for about 10 minutes.

Calibration and Measurement

Press the Enter key to begin the calibration.

• When the reading has stabilized, the meter will show END and return to the measurement mode.

2 Points Calibration

• Ensure that you have selected 2 points calibration in the setup menu.
• Repeat steps 1.2 and 1.3 above. When the first calibration point.is completed, the display will show 0%/CAL2, the meter prompts. you to continue with second point calibration.
• Place the dissolved oxygen electrode into the zero oxygen solution. for about 10 minutes. Press the Enter key to begin the calibration.
• When the reading has stabilized, the meter will show END Calibration is completed.
• Performing a percentage saturation calibration will calibrate the corresponding mg/L or ppm concentration value simultaneously.
• To exit the calibration without saving calibrated values, press the power key.

Measurement
The BI-680 meter can be used to measure the water, wastewater, brine and other liquids. If your sample is seawater or water containing large amounts of salt, make sure to set the salinity coefficient before measurement. Some gas and steam such as chloride, sulfur dioxide, sulfureted hydrogen and carbon dioxide can permeate the membrane via diffusion. Their existence will influence the measurements. If the sample contains solvent, grease, sulfide and alga, the membrane will be damaged or eroded.

1. Press the key to select the mg/L or % saturation measurement mode.
2. Set the barometric pressure and salinity coefficient in the setup menu.
3. Place the electrode into the sample. Wait for the measurement to stabilize.

Communication

The BI-680 meter uses a standard Modbus-RTU protocol. All of the data are character type (2 bytes). The response data ranges between -32767 to 32767, hexadecimal.

PC Command|
---|---
Definition| Length of Byte| Data
ID address| 1| 0 × 03
Command| 1| 0 × 03
Start address| 2| 0 × 0001
Data number| 2| 0 × 0002
CRC16| 2| 0 × 9429

Meter Response

|  |
Definition| Length of Byte| Data
ID address| 1| 0 × 03
Command| 1| 0 × 03
Data Length| 1| 0 × 0002
Data| N| 0 × 02 0 × BC
CRC16| 2| 0 × E539

• If the response is 01 indicating the command is error.
• If the response is 02 indicating the address is incorrect.
• If the response is 03 indicating the byte length is incorrect.

Command 03: Read the data from the measurement
Command 04: Read the data from the setting

• ID: 0 × 03 (Fixed)

• 03: Definition
  Address:
  0 × 0000 – Dissolved oxygen reading
  0 × 0001 – Measurement unit
  0 × 0002 – Temperature (Reading × 0.1)

• 04: Definition
  Address:
  0 × 0000 – Read the low alarm limit
  0 × 0001 – Read the high alarm limit
  0 × 0002 – 4.00 mA correspond to the dissolved oxygen value 0 × 0003 – 20.00 mA correspond to the dissolved oxygen value

Measurement Unit Response:
0 × 0001: mg/L
0 × 0002: ppm
0 × 0003: %

The result will show 7.00 mg/L (700 × 0.01 mg/L)

Electrode Maintenance
In order to maintain an accurate measurement, the dissolved oxygen electrode needs cleaning and regular maintenance.

• Rinse the electrode with clear water to remove deposits.
• If necessary, fill the electrolyte solution to membrane cap.
• If you do not use the electrode for long periods, screw off the membrane cap, rinse the electrode anode, cathode, membrane cap with distilled water and blot dry. Install the electrode and store dry.

Troubleshooting

Preparation of Air-Saturated Water
Use an air-pump to blow air into distilled water at least 1 hour, while stirring the solution.

Preparation of Zero Oxygen Solution
Dissolve 500 mg of the sodium sulfate (Na2SO3) reagent and a small amount of cobalt (II) chloride hexahydrate (CoCl2 • 6H2O) in the 250 ml distilled water, mix the solution until reagent is completely dissolved.

Appendix

Optional Accessories

Meter Specifications

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

Warranty

The warranty period for meter is one year from the date of shipment. Above warranty does not cover the electrode and electrolyte solution. 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 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: (+1) 346-762-7358
E-mail : banteinstruments@yahoo.com
Factory: F3, Building 2, No.2185, Laifang Rd., Shanghai 201615,
China Tel: (+86) 21-6404-1598
E-mail: banteinstrument@hotmail.com

References

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

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