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Operating Manual of Ammonia Nitrogen Sensor

8

Chapter 3 Installation

3.1Sensor connection
3.1.1 Specific steps for instrument connection

Remove the protective caps before powering the instrument, and then connect the cable core correctly
according to the core definition table.

Important Tip:

The power supply of this product is 12VDC. It is not allowed to connect directly to

220VAC or 24VDC power supply. Otherwise, the sensor will be over-pressed and damaged. If there is no
suitable power supply at the site, you can use the 220VAC to 12VDC power adapter that is equipped with
the instrument and then connect the instrument.

Core Definition Table:

Core No.

1

2

3

4

5

Sensor Wire

Brown

Black

Blue

White

Yellow

Signal

+12VDC

AGND

RS485 A

RS485 B

CHGND

Connection with software: The ammonia nitrogen sensor has standard MODBUS protocol and
RS-485 interface, which can be directly connected to the host computer software to realize real-time
online monitoring and data transmission of the instrument.

Summary of Contents for BH-485-NH

Page 1: ...Operating Manual of Ammonia Nitrogen Sensor BH 485 NH Ammonia Nitrogen Sensor User Manual Shanghai BOQU Instrument Co Ltd...

Page 2: ...nsor 4 2 2 pH Sensor 5 2 3 Ammonia Nitrogen Sensor 6 2 4 Potassium Ion Sensor 7 Chapter 3 Installation 8 3 1Sensor connection 8 3 1 1 Specific steps for instrument connection 8 3 2 Installation of Sen...

Page 3: ...Potassium Ion Sensor Calibration 24 Chapter 6 Maintenance 26 6 1 Sensor Maintenance 26 6 1 1 Temperature Sensor Maintenance 27 6 1 2 pH Sensor Maintenance 27 6 1 3 Ammonia Nitrogen Sensor Maintenance...

Page 4: ...onium ion selective electrode potassium ion optional pH electrode and temperature electrode These parameters can mutually correct and compensate the measured value of ammonia nitrogen and meanwhile ac...

Page 5: ...n be extended to 100 meters Outer Dimension Table 1 Technical specification of Ammonia Nitrogen Probe Note Product specifications are subject to change without notice 1 2 Safety Information Please rea...

Page 6: ...and identifiers attached to the instrument carefully otherwise it may cause personal injury or damage to the instrument 1 3 Pressure Limit The maximum pressure for the immersion of the probe is less...

Page 7: ...from freezing please store the probe in a place where it will not freeze 1 5 Minimum Requirement for the Depth In order to prevent the sun exposure sensor the sensor body must be completely submerged...

Page 8: ...2 Figure 2 Temperature Sensor Technical Specification of the Temperature Sensor Principle Thermistor Method Range 0 40 C Resolution 0 1 C Accuracy 0 1 C 2 2 pH Sensor Principle pH describes the pH val...

Page 9: ...Figure 3 pH Sensor Technical Specification of pH Sensor Principle Glass Electrode Method Range 5 10 pH Resolution 0 01 pH Accuracy 0 1 pH 2 3 Ammonia Nitrogen Sensor The NH4 ion selective electrode is...

Page 10: ...as the potassium ions are similar to ammonium ions in such properties for example size and electric charge and some potassium ions can also penetrate the ion selective membrane of the ammonium ion se...

Page 11: ...r supply Otherwise the sensor will be over pressed and damaged If there is no suitable power supply at the site you can use the 220VAC to 12VDC power adapter that is equipped with the instrument and t...

Page 12: ...Sensor 9 3 2 Installation of Sensors 3 2 1 Quick Dismantling pool side fixed installation Figure 6 Quick Dismantling pool side installation sketch map Note The number 4 mounting tube DN32 indicates t...

Page 13: ...l of Ammonia Nitrogen Sensor 10 3 2 2 Classic pool side fixed installation Figure 7 Classic pool side fixed installation sketch map Note The number 4 mounting tube DN32 indicates that the tube inner d...

Page 14: ...ting Manual of Ammonia Nitrogen Sensor 11 3 2 3 Railing fixed installation Figure 8 Railing fixed installation sketch map Note The number 5 mounting tube DN32 indicates that the tube inner diameter is...

Page 15: ...s strong 5 Where the temperature changes greatly and is likely to dew Chapter 4 Software Installation and Use 4 1 Software Installation Insert the U disk into the computer open the U disk double click...

Page 16: ...ected remove and replace the USB port or check the USB to RS485 converter repeat the above operation until the sensor connection is successful 4 2 1 Online data When using online data measurement firs...

Page 17: ...ration menu to calibrate If you select auto switch directly you do not need to re select the operation mode when changing the menu bar The interface is shown below 4 2 3 Historical data The software h...

Page 18: ...you can view the current device parameters as well as set the date time humidity baud rate slave address power off protection temperature sleep cycle battery voltage operating voltage motor frequency...

Page 19: ...e running state 2 It is the timing acquisition state before the power is cut off then the power on is still the timing acquisition state but it will automatically wait until the next acquisition is st...

Page 20: ...grade the program non professionals do not operate the interface is shown below 4 2 5 System Information From the system information you can view Controller Version Power Control Version Dissolved Oxy...

Page 21: ...n standard value 2 When dirt appears or could be seen obviously 3 When the components are replaced Some system components are susceptible to time use and environment To ensure the accuracy of the inst...

Page 22: ...lution rinse the calibration container with distilled water Please avoid cross contamination between different standard solutions 4 Place the clean and dry probe in the calibration container It is rec...

Page 23: ...e sensor is calibrated at the factory and does not need to be calibrated again However you can directly enter the values in the Correction Parameters box and click Factor and Deviation to calibrate th...

Page 24: ...H electrode voltage data in the software interface is stable enter the 6 864 buffer standard solution value in the Calibration box and click Neutral Calibration 2 Second point acidic point Rinse the p...

Page 25: ...state Electrode to start calibration The Ammonia Nitrogen sensor is calibrated with Ammonia Nitrogen standard solution for two to five point calibration The factory requires 4 point calibration The cu...

Page 26: ...ion container Carefully immerse the probe at the end of the main unit in the solution Please ensure that the front end of the Ammonia Nitrogen sensor is immersed in the solution at least 2 cm and ente...

Page 27: ...ium Ion solution for two to five point calibration The factory requires 4 point calibration The customer can base on the situation on the site to calibrate with two to four point calibration method Th...

Page 28: ...solution Please ensure that the front end of the Potassium Ion sensor is immersed in the solution at least 2 cm and enter the standard value After the value in the software interface is stable click 1...

Page 29: ...rs 6 1 Sensor Maintenance 1 It requires regular maintenance and on site inspection every week during the process of which cleaning is recommended It should be calibrated once a month and replace the e...

Page 30: ...with distilled water and get dried and then be calibrated with the aid of instrument Try to void long term storage under a dry environment usually it should be placed in a protective cover with 3 0 m...

Page 31: ...the electrode cap of the ion electrode pour out the remaining electrolyte in the electrode body 2 Use a pipette to put a small amount of electrolyte into the electrode body If the electrode is used fo...

Page 32: ...tenance cycle Be careful not to touch the membrane cap with your hands Use a clean cloth or water to clean it For ion electrodes using PVC ion exchange membranes it is usually necessary to replace the...

Page 33: ...ric shock prevention in an environment that is not frozen and dry The empty end left by the sensor on the main unit should be sealed with a port protection plug 6 3 Maintenance of Cable When operating...

Page 34: ...ol The specific agreement content is shown in the table below Address Name Data Type Operate Type Remarks 0 Temp Value float read 03 command 2 pH Value float read 03 command 16 Ammonia Nitrogen float...

Page 35: ...nd 2208 Ammonia nitrogen calibration points UINT16 read write Supports 03 16 commands the written values 1 2 3 4 2210 Ammonia nitrogen compensation method UINT16 read write Electrode 1 compensation mo...

Page 36: ...en 2nd point calibration float write 16 command 2244 Ammonia nitrogen 2nd point standard value float read 03 command 2246 Ammonia nitrogen 2nd point standard calibration voltage float read 03 command...

Page 37: ...float read 03 command 2264 Ammonia nitrogen 4th point standard calibration temp float read 03 command 2266 Ammonia nitrogen 5th point calibration float write 16 command 2268 Ammonia nitrogen 5th point...

Page 38: ...1st point standard value float read 03 command 2338 Potassium ion 1st point standard calibration voltage float read 03 command 2340 Potassium ion 1st point standard calibration temp float read 03 com...

Page 39: ...4th point standard value float read 03 command 2362 Potassium ion 4th point standard calibration voltage float read 03 command 2364 Potassium ion 4th point standard calibration temp float read 03 comm...

Page 40: ...oop is out of range and the actual output is greater than 20mA The readings on the screen will flash continuously and ERR3 will be displayed below the reading When this warning occurs please contact t...

Page 41: ...ctrode poor contact damage etc Reinstall or replace the pH electrode There are air bubbles at the front end of the electrode membrane Shake the entire sensor vertically downwards with a little bit of...

Page 42: ...mble the electrode or replace a new electrode It might be caused by abnormal pH reference electrode poor contact damage etc Reinstall or replace the pH electrode There are air bubbles at the front end...

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