IoT digital Ion sensor

Short Description:

★ Model No: BH-485-ION

★ Protocol: Modbus RTU RS485

★ Features:  Multiple ions can be select, small structure for easy installation

★ Application: Wastewater plant, ground water, aquaculture


Product Detail

Manual

Introduction

BH-485-ION is a digital ion sensor with RS485 communication  and standard Modbus protocol. Housing material is corrosion-resistant (PPS+POM), IP68 protection, suitable for most water quality monitoring environments;This online ion sensor uses an industrial-grade composite electrode, the reference electrode double salt bridge design and have longer working life;Built-in temperature sensor and compensation algorithm, high precision; It has been widely used in domestic and foreign scientific research institutions, chemical production, agricultural fertilizer, and organic wastewater industries. It is used for the detection of general sewage, waste water and surface water. It can be installed in sink or flow tank.

Digital Ion sensor4Digital Ion sensor6Digital Ion sensor 2

Technical Specification

Model

BH-485-ION Digital Ion Sensor

Ions type

F-,Cl-,Ca2+,NO3-,NH4+,K+

Range

0.02-1000ppm(mg/L)

Resolution

0.01mg/L

Power

12V (customized for 5V,24VDC)

Slope

52~59mV/25℃

Accuracy

<±2% 25℃

Response time

<60s (90% right value)

Communication

Standard RS485 Modbus

Temperature compensation

PT1000

Dimension

D:30mm L:250mm, cable:3meters(it can be extended)

Working environment

0~45℃ , 0~2bar

 Reference Ion

Ion Type

Formula

Interfering ion

Fluoride ion

F-

OH-

Chloride ion

Cl-

CN-,Br,I-,OH-,S2-

Calcium ion

Ca2+

Pb2+,Hg2+,Si2+,Fe2+,Cu2+,Ni2+,NH3,Na+,Li+,Tris+,K+,Ba+,Zn2+,Mg2+

Nitrate

NO3-

CIO4-,I-,CIO3-,F-

Ammonium ion

NH4+

K+,Na+

Potassium

K+

Cs+,NH4+,Tl+,H+,Ag+,Tris+,Li+,Na+

 Sensor Dimension 

Digital Ion sensor5  

Calibration Steps

1.Connect the digital ion electrode to the transmitter or PC; 

2. Open the instrument calibration menu or test software menu;

3.Rinse the ammonium electrode with pure water, absorb the water with a paper towel, and put the electrode into a 10ppm standard solution, turn on the magnetic stirrer and stir evenly at a constant speed, and wait for about 8 minutes for the data to stabilize (so-called stability: potential fluctuation ≤0.5mV/ min), record the value (E1)

4.Rinse the electrode with pure water, absorb the water with a paper towel, and put the electrode into the 100ppm standard solution, turn on the magnetic stirrer and stir evenly at a constant speed, and wait for about 8 minutes for the data to stabilize (so-called stability: potential fluctuation ≤0.5mV/ min), record the value (E2)

5.The difference between the two values (E2-E1) is the slope of the electrode, which is about 52~59mV (25℃).

Trouble Shooting

If the slope of ammonium ion electrode is not within the range described above, perform the following operations:

1. Prepare a newly prepared standard solution.

2. Clean the electrode

3. Repeat the "electrode operation calibration" again.

If the electrode is still unqualified after performing the above operations, please contact After-service Department of BOQU Instrument.


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