Bante Instruments BI-650 User manual

BI-650 Industrial Conductivity Controller
USER MANUAL
Bante Instruments Inc.

1IOverview
Introduction
Thank you for selecting the BI-650 industrial conductivity 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-650 conductivity controller
IE-50MT industrial conductivity electrode
Conductivity standard solution 1413 µ S/cm
Installation
Safety Warning
•BI-650 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
1.1 Cut out a square hole approximately 91 × 91 mm (3.58 × 1.58 in.)
in the mounting panel.
1.2 Remove the mounting bracket, place the meter into the square
hole.
1.3 Replace the mounting bracket and push the meter forward until
it is fully seated on the mounting plate.
Installing the Electrode
2.1 Wrap Teflon tape to the electrode body threads.
2.2 Insert the electrode into the mounting position and slowly turn
clockwise until secure. Hand tighten the electrode to prevent
liquid leakage.
Selectable mounting positions.
The arrow represents the direction of the liquid flow.
91 mm
91 mm
Mounting bracket

Overview I2
Connection
No.
Terminal
Description
1
---
No connection
2
EC (+)
Conductivity/ TDS input
3
EC (−)
Conductivity/ TDS input
4
---
No connection
5
TC (−)
Temperature input (−)
6
TC (+)
Temperature input (+)
7
485 (B)
RS485 signal output (B)
8
485 (A)
RS485 signal output (A)
9
DC 24 (+)
DC 24V (+), linear power supply 1
10
DC 24 (−)
DC 24V (−), linear power supply 1
4 to 20 mA analog output
11
GND
Earth ground
12
DC 24 (+)
DC 24V (+), linear power supply 2
13
DC 24 (−)
DC 24V (−), linear power supply 2
14
NC2
Relay resting position (NC2)
15
NO2
Relay working position (NO2)
16
COM2
Relay common (COM2)
17
NC1
Relay resting position (NC1)
18
NO1
Relay working position (NO1)
19
COM1
Relay common (COM1)
20
---
No connection
Meter Overview
Display
Icon
Description
Calibration
Indicates that the meter is in the calibration mode
Setup
Indicates that the meter is in the setup mode
ATC
Indicates that the automatic temperature
compensation is enabled
ALM1
Indicates the measurement exceeded the high limit
ALM2
Indicates the measurement exceeded the low limit
Keypad
Key
Function
•Switch the meter on or off
•Press and hold the key to enter the setup menu
•Exit the calibration, settings and return to the
measurement mode
•Start calibration
•Increase value or scroll up the menu items
•Set the temperature
•Decrease value or scroll down the menu items
•Toggle between the conductivity and TDS modes
•Confirm the calibration, setting or displayed option
DC 24V (+), linear
power supply 1
Current detection
4 to 20 mA
DC 24V (−), linear
power supply 1
DC 24V (+), linear
power supply 2
DC 24V (−), linear
power supply 2
1
10
11
20

3 ISetup
Meter Setup
The BI-650 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.
Menu Item
Option and Description
Cell Constant
Set the cell constant to match connected conductivity
electrode.
K = 0.1, 1, 10 (default 1)
Calibration Points
Set the number of calibration points.
1 to 3 points (default 1 point)
Temperature Coefficient
Set the temperature coefficient for linear temperature
compensation.
0.0 to 10.0%/° C (default 2.1)
TDS Factor
Set the default TDS conversion factor.
0.1 to 1.0 (default 0.5)
Temperature Unit
Degrees Celsius (default)
Degrees Fahrenheit
Low Alarm Limit
Setting range: 0.02 µ S/cm to 20.00 mS/cm
(default 0.02 µ S/cm)
High Alarm Limit
Setting range: 20.00 mS/cm to 0.02 µ S/cm
(default 1000 µ S/cm)
Hysteresis Value (Low)
Setting range: 1% to 99% (default 10%)
Hysteresis Value (High)
Setting range: 1% to 99% (default 1%)
Analog Output (Low)
Setting range: 0.02 µ S/cm to 20.00 mS/cm
(default 0.02 µ S/cm)
Analog Output (High)
Setting range: 20.00 mS/cm to 0.02 µ S/cm
(default 20.00 mS/cm)
Factory Reset
Reset the meter to factory default settings. Note,
the meter must be recalibrated.
Enable
Disable (default)
•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 mS/cm
and hysteresis value at 1%. When the measurement overshoots
the 20.2 mS/cm, the meter will activate an external device. When
the measurement drops to 19.8 mS/cm, the device will switch off.
•The default RS485 communication is 0.02 µ S/cm to 20.00 mS/cm
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.
Menu
item
Page
number
Option
Menu
item

Calibration and Measurement I4
Temperature Compensation
The BI-650 meter is supplied with an industrial conductivity 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 °Ckey to enter the temperature setting.
3. Press the / key to modify the temperature value.
4. Press the Enter key to save.
Selecting a Conductivity Electrode
The BI-650 meter is capable of using three types of 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.
Electrode
Measurement Range
Cell Constant
IE-50LT
0.5 to 100 µ S/cm
K = 0.1
IE-50MT
10 µ S/cm to 20 mS/cm
K = 1
IE-50HT
100 µ S/cm to 200 mS/cm
K = 10
Conductivity Calibration
The BI-650 meter allows 1 to 3 points conductivity calibration. For better
accuracy, we recommend to perform 3 points calibration or select 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.
Measurement Range
Default Standard Solution
20 to 200 µ S/cm
84 µ S/cm
200 to 2000 µ S/cm
1413 µ S/cm
2 to 20 mS/cm
12.88 mS/cm
20 to 200 mS/cm
111.8 mS/cm
Single Point Calibration
Ensure that you have selected 1 point calibration in the setup menu.
1.1 Press the Cal key, the display shows ---/, the meter waits
for recognizing the standard solution.
1.2 Rinse the conductivity electrode with distilled water, then rinse
with a small amount of standard solution.
1.3 Place the electrode into the standard solution, the meter will
automatically show the calibration standard (e.g., 1413 µ S/cm).
1.4 Press the Enter key, the default calibration value begins flashing.
1.5 Press the / key to set the calibration value, press the Enter
key to confirm and move to next digit. When the setting is
completed, ensure that displayed value matches your calibration
standard.

5 ICalibration and Measurement
1.6 Press the Enter key, the meter begins the calibration.
Wait for the reading to stabilize, the display will shows .
Single point calibration is completed.
Multipoint Calibration
Ensure that you have selected 2 or 3 points calibration in the setup
menu.
2.1 When the first calibration point is completed, the display will
show ---/. The meter prompts you to continue with second
point calibration.
2.2 Repeat steps 1.2 through 1.6 above until the meter shows .
Calibration is completed.
•Performing the conductivity calibration will simultaneously
calibrate the corresponding TDS value.
•To exit the calibration without saving changes, press the
key.
Measurement
1. Press the key to select the conductivity ( ) or TDS ( )
mode.
2. Place the electrode into the sample. Wait for the measurement
to stabilize.
Communication
The BI-650 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 × 02
Command
1
0 × 03
Start address
2
0 × 0001
Data number
2
0 × 0002
CRC16
2
0 × 95F8
Meter Response
Definition
Length of Byte
Data
ID address
1
0 × 02
Command
1
0 × 03
Data Length
1
0 × 0002
Data
N
0 × 02 0 × BC
CRC16
2
0 × E4E8
•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 × 02 (Fixed)
•03: Definition
Address:
0 × 0000 -Conductivity/TDS reading
0 × 0001 -Decimal point
0 × 0002 - Measurement unit
0 × 0003 -Temperature (Reading × 0.1)
•04: Definition
Address:
0 × 0000 -Read the low alarm limit
0 × 0001 -Position of decimal point for the low alarm limit
0 × 0002 -Measurement unit of the low alarm limit
0 × 0003 -Read the high alarm limit
0 × 0004 -Position of decimal point for the high alarm limit
0 × 0005 -Measurement unit of the high alarm limit
0 × 0006 -4.00 mA correspond to conductivity value
0 × 0007 -Position of decimal point for above value (4.00 mA)
0 × 0008 -Measurement unit of above value (4.00 mA)

Appendix I6
0 × 0009 -20.00 mA correspond to conductivity value
0 × 000A- Position of decimal point for above value (20.00 mA)
0 × 000B- Measurement unit of above value (20.00 mA)
Decimal Point Response:
0 × 0000 (Reading × 1)
0 × 0001 (Reading × 0.1)
0 × 0002 (Reading × 0.01)
0 × 0003 (Reading × 0.001)
Measurement Unit Response:
0 × 0006: mS/cm
0 × 0007: µ S/cm
0 × 0008: ppt
0 × 0009: ppm
For Example (Hexadecimal):
PC send: 02 03 00 00 00 02 C4 38
(Read the conductivity)
Response: 02 03 02 02 BC FC 95
(700)
PC send: 02 03 00 01 00 02 95 F8
(Read the decimal point)
Response: 02 03 02 00 01 3D 84
(Reading × 0.1)
PC send: 02 03 00 02 00 02 65 F8
(Read the measurement unit)
Response: 02 03 02 00 07 DB 86
(µ S/cm)
The result will show 70.0 µ S/cm (700 × 0.1 µ S/cm)
Electrode Maintenance
In order to maintain an accurate measurement, the electrode needs
cleaning and regular maintenance.
•Remove the conductivity electrode from service and rinse the
platinum sensor on the bottom of the electrode.
•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 IE-50HT, store the electrode with tap
water. This sensor needs to be kept wet always.
Appendix
Troubleshooting
Fault
Cause and Corrective Action
Electrode dried out.
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.
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 table below.
Conductivity Standard
Reagent
Weight
84 µ S/cm
KCl
42.35 mg
1413 µ S/cm
KCl
745.5 mg
12.88 mS/cm
KCl
7.45 g
111.8 mS/cm
KCl
74.5 g
3. Fill the distilled water to the mark, mix the solution until the
reagent is completely dissolved.
Calculating the Temperature Coefficient
1. Do not connect the temperature probe to the meter.
2. Press and hold the °Ckey 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 TAand 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.
Platinum
black coating

7 IAppendix
TC= [CTB –CTA] / [CTA (TB–25) –CTB (TA–25)]
Where:
TC= Temperature coefficient
CTA = Conductivity at temperature A
CTB = Conductivity at temperature B
TA= Temperature A
TB= Temperature B
Calculating the TDS Conversion Factor
To determine the TDS factor of sample solution use the formula below.
Factor = Actual TDS / Actual Conductivity @25° C
Where:
Actual TDS = value from the high purity water and precisely weighed
NaCl or KCL reagent
Actual Conductivity = the meter measured conductivity value
For example:
Dissolve 64 grams of the potassium chloride (KCl) reagent in 1 liter
distilled water. If measured conductivity is 100 mS/cm, then TDS factor
is 0.64.
Optional Accessories
Order Code
Description
IE-50LT
For measuring the pure water
IE-50MT
For general purpose applications
IE-50HT
For measuring the high conductivity liquids
ECCS-84
Conductivity standard solution 84 µ S/cm, 480 ml
ECCS-1413
Conductivity standard solution 1413 µ S/cm, 480 ml
ECCS-1288
Conductivity standard solution 12.88 mS/cm, 480 ml
ECCS-1118
Conductivity standard solution 111.8 mS/cm, 480 ml
Meter Specifications
Model
BI-650
Conductivity
Range
0.01 µ S/cm to 200.0 mS/cm
Resolution
0.001, 0.01, 0.1, 1
Accuracy
± 1% F.S.
Calibration Points
1 to 3 points
Calibration Solutions
84 µ S/cm, 1413 µ S/cm, 12.88 mS/cm,
111.8 mS/cm
Temperature Compensation
0 to 100° C (32 to 212° F), automatic
Temperature Coefficient
0.0 to 10.0%/° C
Reference Temperature
25° C
Cell Constant
K = 0.1, 1, 10
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 100° C (32 to 212° F)
Resolution
0.1° C (0.1° F)
Accuracy
± 1° C (± 1.8° F)
Calibration Point
1 point
Communication
Signal Output
4 to 20 mA
Low or High Alarm
0.02 µ S/cm to 20.0 mS/cm
Load
500 ohm
Communication Interface
RS485
Other Specifications
Operating Temperature
5 to 50° C 41 to 122° F)
Storage Temperature
0 to 60° C (32 to 140° F)
Relative Humidity
< 80% (non-condensing)
Display
LCD, 70 × 45 mm (2.9 × 1.7 in.)
Power Requirements
DC 24V
Dimensions
96 (L) × 96 (W) × 75 (H) mm,
(3.7 × 3.7 × 2.9 in.)
Weight
350 g (12.3 oz.)

The information in this document is subject to change without notice.
Copyright © Bante Instruments Inc, 2022. All rights reserved.
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
in 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 standard 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: [phone]
E-mail: [email protected]
Factory: F3, Building 2, No.2185, Laifang Rd., Shanghai 201615, China
Tel: [phone]
E-mail: [e-mail]
www.bante-china.com