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MS-301 Multi parameter Water Quality Sensor

Web:www.boquinstrument.com

Sensor Wire

Red

Black

Blue

White

Signal

+12VDC

AGND

RS485 A

RS485 B

Connected with the host computer: multi-parameter sensor has standard MODBUS protocol, RS-485
interface, can be directly connected to the host computer (PC / data acquisition instrument, etc.), real-time
online monitoring and data transmission of the instrument. The connection can be achieved in the
following two ways:
(1) RS485 to USB converter
(2) RS485 to RS232 converter,
RS485 to RS232 can use any of the following:
Passive RS485 to RS232
Active RS485 to RS232.
When the instrument is used in a laboratory environment, or when instrument calibration is required, it
can be implemented by connecting the PC and running the supporting software (Chapter 4 software and
installation will focus on). The PC software will automatically scan the detection device, read the data
stored by the Sensor, and complete the basic setup and calibration of the instrument.
Connection reference diagram: Figure 16 is a reference diagram

Figure 16 Connection reference diagram

Summary of Contents for MS-301

Page 1: ...uinstrument com Multi parameter Water Quality Sensor Model MS 301 User Manual SHANGHAI BOQU INSTRUMENT CO LTD Address No 118 Xiuyan Road Pudong New Area Shanghai zip code 201315 China Web www boquinst...

Page 2: ...ou will be served with product maintenance for free Except the consumables 2 No matter where the product you buy from the manufacturer hereby guarantees that you will be served with lifetime technical...

Page 3: ...e limit 3 1 4 Temperature limit 4 1 5 Minimum depth requirement 4 Chapter 2 Introduction to Sensors 4 2 1 Temperature Sensor 4 2 2 pH Sensor 5 2 3 ORP Sensor 6 2 4 Conductivity Sensor 7 2 4 1 Conducti...

Page 4: ...ine data 21 4 2 2 Calibration 21 4 2 3 History data 22 4 2 4 System Settings 23 4 2 4 1 Device settings 23 4 2 4 2 Software Settings 25 4 2 5 System Information 25 Chapter 5 Setting and operation of h...

Page 5: ...or 42 6 1 9 Ion Sensors Calibration 44 6 1 9 1 Ammonia Nitrogen Sensor Calibration 44 6 1 9 2 Nitrate ion Sensor Calibration 46 6 1 9 3 Fluorine Ion Sensor Calibration 48 6 1 9 4 Chloride Ion Sensor C...

Page 6: ...intenance 60 7 1 4 Dissolved oxygen sensor maintenance 60 7 1 5 Depth sensor maintenance 61 7 1 6 Standard optical sensor maintenance 61 7 1 7 Ion Sensor Maintenance 61 7 2 Sensor Storage 63 7 2 1 Sho...

Page 7: ...variety of electrochemical optical or physical means of detection The integrated multi parameter water quality sensor can be equipped with self cleaning system to obtain accurate data for a long time...

Page 8: ...data of integrated multi parameter water quality sensor on line and can read and export the history data only can read and export history data stored by hand manipulator Also hand manipulator can comp...

Page 9: ...tion 4 Section 3 7 V Lithium Battery Protection Level IP67 Operating Temp 0 50 not frozen Storage Temp 15 60 not frozen Size 203 100 43mm Weight 0 5KG 1 2 Safety Information Please read this manual th...

Page 10: ...hed to the instrument otherwise it may cause personal injury or damage to the instrument If the label is marked on the instrument refer to the instrument manual for operation and or safety information...

Page 11: ...llowing parameters depth temperature pH ORP conductivity turbidity dissolved oxygen chlorophyll blue green algae ammonia nitrogen nitrate fluoride and chloride The wide range of physical biological an...

Page 12: ...me Celsius The appearance of the temperature sensor is shown in Figure 3 Figure 3 Temperature sensor Temperature Sensor Specification Principle Thermistor method Range 0 50 C Resolution 0 01 C Accurac...

Page 13: ...high sulfur ion environments which is easy damaged and with short life time Figure 4 pH Sensor pH Sensor Specification Principle Glass electrode method Range 0 14 pH Resolution 0 01 pH Accuracy 0 1 p...

Page 14: ...soidal voltage is applied across the plates the interpolate flow can be measured The current passed The conductivity of the water quality is calculated according to the corresponding calculation formu...

Page 15: ...method for water and seawater detection 1989 and its unit output is ppt Salinity can be used for real time compensation of dissolved oxygen Salinity Specification Principle Converted by conductivity R...

Page 16: ...t emitted by the sensor is irradiated to the fluorescent substance the fluorescent substance is excited to emit red light and the oxygen molecule can carry away energy quenching effect Therefore the t...

Page 17: ...nd microorganisms The turbidity sensor is designed based on a combined infrared absorption scatter ray method The infrared light emitted by the light source is scattered by the particles in the water...

Page 18: ...e applied by the water body The distance from the depth sensor to the liquid surface is the measurement distance Reasons that affect depth measurements include atmospheric pressure water density and t...

Page 19: ...ion peak in the spectrum Monochromatic light emitting a specific wavelength is irradiated into water and chlorophyll A in water absorbs the energy of the monochromatic light releasing another waveleng...

Page 20: ...lue green algae is proportional to the content of cyanobacteria in the water The appearance of the blue green algae sensor is shown in Figure 11 Figure 11 Blue green algae Sensor Blue green algae Sens...

Page 21: ...on is the best field calibration otherwise it may be out of range Important Tip Ammonia nitrogen must be set to no compensation if potassium ions are not purchased and installed 2 11 Nitrate ion senso...

Page 22: ...Sensor F ion selective electrode is a kind of solid state membrane electrode LaF3 single crystal is the main material of the membrane and the periphery of the membrane is a special polymer The appear...

Page 23: ...rode for the surface of solid The appearance of chloride ion sensor is showed by the Figure 15 Figure 15 Chloride ion sensor Chloride sensor Specification principle ion selective electrode method Rang...

Page 24: ...urned on use the magnetic switch touch the blue switch on the integrated multi parameter water quality sensor the blue display light flashes Lights up and Bluetooth is turned on 3 3 Instrument connect...

Page 25: ...two ways 1 RS485 to USB converter 2 RS485 to RS232 converter RS485 to RS232 can use any of the following Passive RS485 to RS232 Active RS485 to RS232 When the instrument is used in a laboratory enviro...

Page 26: ...ocess 3 4 Installation Environment Avoid the following places during installation 1 The place where the sunlight directly shines and the vicinity of the heat appliance 2 The place where the ambient te...

Page 27: ...ensure that the wir ing is ok and then set the timing mode as needed Chapter 4 Real time online setup and operation 4 1 Software installation Insert the U disk into the computer open the U disk double...

Page 28: ...Online data When online data measurement first click on Online Data and then set the save path refresh settings tag name etc as shown Then click the mode setting at the top right of the software to s...

Page 29: ...tion when changing the menu bar Mode the interface is shown below 4 2 3 History data The software has the function of storing historical data Before viewing historical data need set the running mode t...

Page 30: ...settings of the system settings you can view or set the current Device Parameters Device Time Settings Communication Settings Motor Settings etc The interface is as shown below Device time setting Sys...

Page 31: ...operating state when it is powered off and then re powered for example 1 Before the power is off it is online then power on again It is still in the online running state 2 It is the timing acquisition...

Page 32: ...ngs can set Advanced Settings as shown in the figure below 4 2 5 System Information From the system information you can view Controller Version Power Control Version Dissolved Oxygen Turbine Version c...

Page 33: ...arameter water quality sensor is starting up in the process of operation by hand manipulator Please check the details in Chapter 3 2 2 Press the key of direction downward to choose configuring and pre...

Page 34: ...e baud rate of Sensor Press the keys of up and down to choose baud rate of 19200 and then choose scanning At last press the key of Enter to confirm 3 Settings of manual and automatic refresh of data C...

Page 35: ...cess Sensor will occur So choose read first If the existing Sensor does not occur please revise the related options by manual operation and then choose the option of manual configuring At last press t...

Page 36: ...rmation of longitude and latitude in the column of history information refers to the last information saved by pressing the key of save If it is not necessary to save current information of longitude...

Page 37: ...nt To ensure the accuracy of the instrument it is recommended to perform routine testing under the standard conditions for the system Note If there is only one parameter to be measured you need not ta...

Page 38: ...ated menu bar is shown below Tip The calibration of each sensor follows the basic steps above Always keep the sensor clean and dry before calibrating Note The values of all the following interfaces ar...

Page 39: ...standard solution into a clean dry or pre rinsed calibration container Carefully immerse the Sensor at the end of the main unit in the solution Make sure the glass bulb is immersed in the solution at...

Page 40: ...ect amount of buffer standard solution at pH 9 18 place the glass bubble into the solution at least 1 cm leave it for at least one minute and then click on the confirmation on the side of the mode set...

Page 41: ...electrode voltage in the software interface is stable enter the 86 standard solution value in the Calibration box and click 1st Calibration 2 The second point calibration adjust the current calibrati...

Page 42: ...the sensor is dry before calibrating Pour the correct amount of 300 500 S cm standard into a clean dry or pre rinsed calibration container 2 Carefully immerse the Sensor at the end of the main unit i...

Page 43: ...sure the sensor is dry 2 After the current state data of the instrument is stabilized or about 10 minutes later start calibration again and avoid direct sunlight 3 Click Air calibration in the Type B...

Page 44: ...lved oxygen ensuring measurement accuracy convenient use and comparison The Sensor has a salinity compensation function and the dissolved oxygen has compensated for the salinity in the solution in rea...

Page 45: ...libration box The system will automatically save the data to complete the calibration Due to the special nature of the depth sensor it is recommended that customers need to calibrate frequently to mai...

Page 46: ...software interface is stable enter the standard value 0 in the Calibration box and click the zero calibration At this time the calibration progress display box will prompt the calibration status 2 Se...

Page 47: ...ompletion B high and low point calibration 1 Select the low point in the calibration point migration and pour the low standard solution 0 4NTU 1NTU customers can choose according to the actual situati...

Page 48: ...ware interface is stable click Zero Calibration in the Calibration box Rinse the wiper sensor and calibration container after calibration is complete 2 For Solution calibration we need a standard wate...

Page 49: ...ess the temperature of the standard solution should be determined each time the counter standard is measured to determine the chlorophyll value of the standard solution Table 1 Algae chlorophyll as a...

Page 50: ...usually two standards that can be used A phytoplankton water samples of known blue green algae content B Rhodamine B stain solution Remove the Sensor from the distilled water and wipe it into a calibr...

Page 51: ...re difference is in line with the 10 fold relation 6 1 9 1 Ammonia Nitrogen Sensor Calibration See section 6 1 9 for instructions before calibration Take an option from the calibration menu to enter t...

Page 52: ...note that when the measured value is high select a higher value of the calibration point which is close to the measured value and the lower point should generally be no more than 10mg L The specific c...

Page 53: ...tion According to the water source selected by the customer select manual compensation when the potassium ion concentration in the water is stable and directly enter the potassium ion concentration 6...

Page 54: ...se note that when the measured value is high select a higher value of the calibration point which is close to the measured value and the lower point should generally be no more than 10mg L The specifi...

Page 55: ...ration Take an option from the calibration menu to enter the electrode calibration program and the interface is showed by diagram as below Then the operation of calibration can be prepared to start Ty...

Page 56: ...ng water below 50mg L Pour the standard solution from point 1 generally recommended 0 02 mg L into a clean dry or pre rinsed calibration container Carefully immerse the Sensor at the end of the main u...

Page 57: ...gured such as that showed in the square frame The Chloride Ion sensor is calibrated with Chloride Ion standard solution for three to five point calibration The factory requires 4 point calibration The...

Page 58: ...container Carefully immerse the Sensor at the end of the main unit in the solution Please ensure that the front end of the Chloride Ion Sensor is immersed in the solution at least 2 cm and enter the...

Page 59: ...alue in the correction parameter box and click factor and deviation to calibrate the factor and deviation value 6 2 Calibrate the sensor by hand manipulator Choose calibration in the main menu page an...

Page 60: ...neutral can be input at the neutral point such as 6 86 Choose the key of OK and press the key of Enter 6 2 3 Conductivity calibration Get into the interface of conductivity calibration and manually i...

Page 61: ...nsor before calibration The calibration for depth sensor is mainly the calibration for the pressure of atmosphere so please make sure that the depth sensor is in the air and not immerged in any contai...

Page 62: ...me input corresponding standard solution value in the square frame of the hand manipulator Then choose the key of OK and press Enter for calibration and confirm the calibration status according to the...

Page 63: ...into distilled water or rinsing Press the key of OK at the site of wiping before calibration Press the key of Enter to perform cleaning procedure for one time by scratching and eliminate the influence...

Page 64: ...chloride ion calibration and press the key of calibration Press the key of Enter to calibrate the chloride ion Choose first point second point third point fourth point fifth point chloride ion calibr...

Page 65: ...nia Nitrogen Calibration Get into the interface ammonia nitrogen calibration and press the key of calibration Press the key of Enter to calibrate the ammonia nitrogen Choose first point second point t...

Page 66: ...l or microbes and rinse the sensor Sensor with water Do not use any object to poke the sensor otherwise the sensor film will rupture 7 1 2 pH sensor maintenance The pH sensor requires frequent mainten...

Page 67: ...ion of the conductivity cell which can be recovered after cleaning with an alcohol cotton ball 7 1 4 Dissolved oxygen sensor maintenance It is recommended to clean the dissolved oxygen sensor at inter...

Page 68: ...the instrument with soap and water Soak the entire instrument in clean water for at least 5 minutes Observe the optical window of the Sensor clean the optical window of the Sensor with a tissue paper...

Page 69: ...rode first and the electrode should be cleaned according to process 3 And then a little electrolyte should be added 3 Clean the electrode by shaking slightly up an down And pour out the electrolyte af...

Page 70: ...rage Long term refers to the state of being unused for a long time 1 For long term storage of the pH sensor remove it from the main unit clean it and then immerse it in a protective cover with 3 0 mol...

Page 71: ...essary tension repeated bending or severe bending such as railings during use 7 4 Sensor damage check Check the appearance of the sensor for damage If there is any damage contact the after sales servi...

Page 72: ...0 It can communicate with the host computer PC digital instrument etc with RS485 communication function The specific MODBUS RTU table is shown in the table below MODBUS RTU Baud rate 9600 4800 19200 3...

Page 73: ...epresents pressure temperature 4 represents manual input temperature 422 manual temperature compensation value float read write range 10 100 2 pH value float read 0 14 1000 pH AD value float read 1600...

Page 74: ...oat read write 0 no compensation 1 manual compensation 2 salinity sensor compensation 432 salinity compensation value float read write Register 430 salinity compensation mode is manual compensation mo...

Page 75: ...the turbidity calibration mode of register address 906 first so that the turbidity sensor enters into the calibration mode and then enter the actual value of the standard liquid 10 depth value float...

Page 76: ...channel value float read 1614 blue green algae factor float read write Default 1 1514 blue green algae deviation value float read write Default 0 1102 calibration progress value of blue green algae fl...

Page 77: ...oint 530 interval of scratching float read write unit min 532 manual scratching float Write 1 represents scratching 70 year float read write 72 month float read write 74 day float read write 76 hour f...

Page 78: ...represents fluoride ion 2208 calibration points of electrode 1 unsigned read write Support the command of 03 and 16 The written values of 1 2 3 4 and 5 respectively represent single point calibration...

Page 79: ...electrode 1 float read 2248 temperature of the second point standard solution calibration of electrode 1 float float 2250 third point calibration of electrode 1 float write input the standard solution...

Page 80: ...h point standard solution value of electrode 1 float read 2270 electric voltage of the fifth point standard solution calibration of electrode 1 float read 2272 temperature of the fifth point standard...

Page 81: ...stability of the electrode voltage used during calibration the value on 0 9 represents the stability 2334 first point calibration of electrode 2 float write input the standard solution value 2336 the...

Page 82: ...int standard solution value of electrode 2 float float 2354 electric voltage of the third point standard solution calibration of electrode 2 float read 2356 temperature of the third point standard sol...

Page 83: ...on of electrode 2 float read 20 value of electrode 3 float read command 03 2400 electrode voltage of electrode 3 float read 2402 factor of electrode 3 float read write Default 1 2404 deviation of elec...

Page 84: ...t point standard solution value of electrode 3 float read 2438 electric voltage of the first point standard solution calibration of electrode 3 float read 2440 temperature of the first point standard...

Page 85: ...hird point standard solution calibration of electrode 3 float read 2458 fourth point calibration of electrode 3 float write input the standard solution value 2460 the fourth point standard solution va...

Page 86: ...of electrode 4 float read write Default 0 2506 type of electrode 4 float read write The types of electrode are represented by floating point number of 1 2 3 4 5 and 6 1 represents ORP 2 represents amm...

Page 87: ...lectrode 4 float read 2542 second point calibration of electrode 4 float write input the standard solution value 2544 the second point standard solution value of electrode 4 float read 2546 electric v...

Page 88: ...point standard solution calibration of electrode 4 float read 2564 temperature of the fourth point standard solution calibration of electrode 4 float read 2566 fifth point calibration of electrode 4...

Page 89: ...ygen Low test Inappropriate flow rate Install the conductivity cell at a suitable flow rate pH pH meter cannot be calibrated Viscous substance attached to the fluorescent cap Wipe with a soft damp clo...

Page 90: ...MS 301 Multi parameter Water Quality Sensor Web www boquinstrument com...

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