Related Manuals for Hach NO3D sc
Summary of Contents for Hach NO3D sc
- Page 1 DOC023.53.90140 NO3D sc Nitrate Sensor USER MANUAL 12/2008, Edition 1A © HACH Company, 2008. All rights reserved. Printed in Germany...
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Page 3: Table Of Contents
Table of Contents Section 1 Specifications ........................5 1.1 Dimensions ........................... 6 Section 2 General Information....................... 7 2.1 Safety information ......................... 7 2.1.1 Use of hazard information....................7 2.1.2 Precautionary labels ......................7 2.2 General sensor information......................8 2.3 Theory of operation........................9 Section 3 Installation .......................... - Page 4 Table of Contents Section 10 Certification ........................43 Appendix A Modbus Register ......................45 Index ...............................47...
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Page 5: Section 1 Specifications
Section 1 Specifications These are subject to change without notice. General Information Ion-selective electrodes for nitrate and chloride, pHD reference electrode and Measuring method temperature sensor Measuring range 0.1 to 1000 mg/L [NO –N] and 0.1 to 1000 mg/L [Cl Minimum detection limit 0.5 mg/L [NO –N]... -
Page 6: Dimensions
Specifications 1.1 Dimensions Figure 1 Stainless steel sensor dimensions... -
Page 7: Section 2 General Information
Section 2 General Information 2.1 Safety information Please read this entire manual before unpacking, setting up, or operating this equipment. Pay attention to all danger and caution statements. Failure to do so could result in serious injury to the operator or damage to the equipment. To ensure that the protection provided by this equipment is not impaired, do not use or install this equipment in any manner other than that specified in this manual. -
Page 8: General Sensor Information
General Information 2.2 General sensor information The sensor was developed for use in municipal waste water applications. The NO3D sc sensor (see Figure 2) with ion-selective electrode (ISE sensor) is a continuous online process sensor for the measurement of nitrate directly in the tank. It operates without reagents and requires no further processing of the sample. -
Page 9: Theory Of Operation
General Information 2.3 Theory of operation The NO3D sc sensor utilizes ion-selective electrode technology to measure nitrate ions (NO ) in a waste water sample. Well-known interferences of temperature and chloride are compensated by using appropriate built-in sensors. The reference electrode is a differential pH technology and does not have direct contact with the process and therefore, it is particularly stable against drift. - Page 10 General Information...
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Page 11: Section 3 Installation
If any items are missing or damaged, contact the manufacturer or distributor. Figure 4 Items supplied Sensor cable Locking ring NO3D sc sensor Sensor cartridge (supplied in a storage container with polishing paper for the chloride electrode) Opaque gasket Cleaning brush 3.2 Unpacking the sensor cartridge... - Page 12 Installation 4. Connect the sensor cartridge to the sensor (see 3.3 Sensor assembly on page 13). Important Note: The sensor cartridge only fits correctly in the sensor adapter in one position. Pay attention to the markings on the sensor cartridge and on the sensor adapter (see Figure 8 on page 14).
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Page 13: Sensor Assembly
Installation Figure 6 Storage container for sensor cartridge Storage container Sensor cartridge Black gasket (remove before installation) Save items 1, 2 and 4 for sensor storage. 3.3 Sensor assembly Important Note: Avoid touching the membranes on the sensor cartridge or damage to the sensor may occur. 1. - Page 14 Installation Figure 7 Sensor cartridge Make sure that this end remains wet Make sure that the contacts on this end stay dry Figure 8 Sensor assembly Locking ring Sensor adapter Sensor cartridge Sensor housing Alignment arrows Opaque gasket...
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Page 15: Installation Of The Cleaning Unit (Optional)
Installation Figure 9 Cap of the storage container as a tool/screwing aid for the locking ring Locking ring 3.4 Installation of the cleaning unit (optional) To install the cleaning unit on the sensor, refer to the installation instructions for the cleaning unit (section 7.4 on page 37). - Page 16 Installation Figure 10 Example of sensor installation with Rail Mount Kit...
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Page 17: Connect The Sensor To The Sc Controller (Non-Hazardous Location) With Quick-Connect Fittings
Installation 3.6 Connect the sensor to the sc controller (non-hazardous location) with quick-connect fittings The sensor cable is supplied with a keyed quick-connect fitting for easy attachment to the controller (see Figure 11 on page 17). Retain the connector cap to seal the connector opening in case the sensor must be removed. - Page 18 Installation...
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Page 19: Section 4 Operation
Section 4 Operation 4.1 Using an sc controller Before using the sensor in combination with an sc controller, refer to the controller user manual for navigation information. 4.2 Sensor setup When a sensor is installed for the first time, the serial number of the sensor is displayed as the sensor name. -
Page 20: Sensor Setup Menu
Operation 4.5 Sensor setup menu SELECT SENSOR (if there is more than one sensor) CALIBRATE Note: If once a calibration method is chosen the entries will be displayed in the first submenu of the calibrate menu. CAL.CONFIG. Select SENSOR CODE, MATX1, MATX1 CL-, MATX2, MATX2 CL-, VALUE CORR, PREVIOUS CAL or FACTORY CAL -or- CAL.CONFIG.>SENSOR CODE... - Page 21 4.6.3.5 on page Once value correction is complete, the correction data are displayed in the form of the MATX2 Enter the NO –N concentration (NO3D sc) of 1st NO3–N NO3DSC the 1st point Enter the Cl concentration (NO3D sc) of the...
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Page 22: Calibration
Perform a matrix correction to compensate the influences of other ions on the nitrate ISE electrode. Chloride has the largest interference effect on the nitrate membrane. This problem is compensated in the NO3D sc sensor using the integrated chloride electrode. CARTRICAL is a compact sensor cartridge with 3 electrodes, which are perfectly factory calibrated to each other. -
Page 23: Matrix Correction Overview
If an error is indicated, check the sensor code and repeat the entry of the sensor code if necessary. 4.6.2 Matrix correction overview With the NO3D sc sensor, there are various options (Table 1) for correcting the measured value with laboratory reference values. -
Page 24: Matrix Correction
4.6.3.1 MATX1 correction (one point matrix correction) Proceed as follows to perform the MATX1: 1. Select SENSOR SETUP>NO3D SC>CALIBRATE> CAL CONFIG CALIBRATE CAL. CONFIG. 2. Select in the selection window and press... -
Page 25: Matx2 Correction (2Nd Point Matrix Correction)
Confirmation of the entered laboratory value activates the matrix correction. 4.6.3.3 MATX2 correction (2nd point matrix correction) Proceed as follows to perform the MATX2: 1. Select SENSOR SETUP>NO3D SC>CALIBRATE>CAL CONFIG CALIBRATE CAL. CONFIG. 2. Select in the selection window and press... -
Page 26: Matx2 Cl- Correction
4.6.3.4 MATX2 CL- correction Select to calibrate the nitrate and chloride sensor MATX2 CL- simultaneously at two different measuring points. 1. Select SENSOR SETUP>NO3D SC>CALIBRATE> CAL CONFIG CALIBRATE CAL. CONFIG. 2. Select in the selection window and press MATX2 CL-... -
Page 27: Value Correction
CAL CONFIG.> CALIBRATE>VALUE CORR and press to confirm. ENTER Enter the 3 noted values: 5. 1. NO3–N NO3D sc: Enter the displayed NO –N value for the 1st correction point. Press to confirm. ENTER − 6. 1. CL- NO3D sc: Enter the displayed Cl value for the 1st correction point. - Page 28 Operation...
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Page 29: Section 5 Maintenance
Section 5 Maintenance Important Note: Only qualified personnel should conduct the tasks described in this section of the manual. 5.1 Maintenance schedule Maintenance task 30 days 6 months Clean sensor 3, 4 Replace the sensor cartridge Check sensor for damage Check measured value by lab reference analysis and correct values by matrix correction if required Recommendation: weekly during the first month in operation... -
Page 30: Replace The Sensor Cartridge
Maintenance Figure 12 Chloride electrode 5.3 Replace the sensor cartridge The sensor cartridge is replaced as described below and in Figure 13 on page 1. Clean the sensor and thoroughly dry the sensor cartridge and the sensor adapter. 2. Unscrew the locking ring and remove. Important Note: The sensor cartridge must direct downwards so that no water can run into the sensor adapter. - Page 31 Maintenance Figure 13 Replace the sensor cartridge Locking ring Sensor adapter Sensor cartridge Sensor housing Markings Opaque gasket...
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Page 32: Storage
Maintenance 5.4 Storage Remove the sensor from the sample flow and clean the sensor thoroughly. Short term storage Keep the membranes and the salt bridge moist by using drinking water or shipping boot solution (NO DISTILLED WATER OR DI WATER). This will help avoid long response times when placing the sensor back in the sample flow. -
Page 33: Section 6 Troubleshooting
Section 6 Troubleshooting 6.1 Error codes When the sensor is experiencing an error condition, the sensor reading on the measurement screen will flash and the relays and analog outputs associated with this sensor will be held or transferred to a previously defined state depending on the configuration settings used in the controller. -
Page 34: Troubleshooting
Troubleshooting 6.3 Troubleshooting 6.3.1 Troubleshooting during operation Symptom Possible cause Corrective actions Calibration too old; calibration was not suitable for Carry out suitable calibration the particular case; big change in the waste water 4.6 Calibration on page 22 matrix Clean the sensor cartridge using a brush and/or rinse the sensor cartridge with clean water (without cleaning agents), and wipe the sensor cartridge carefully with a soft, clean... - Page 35 Troubleshooting 6.3.1 Troubleshooting during operation (continued) Symptom Possible cause Corrective actions Dampness inside the measuring probe/faulty sensor electronics Check the sensor electronics by using the test cartridge (section 7.2 on page 37). Select SENSOR-SETUP>DIAG/TEST>SERVICE> TEST CARTRIDGE>Test cartridge Ready? Press ENTER Compare the displayed values with the guide values.
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Page 36: Troubleshooting During Calibration
Troubleshooting 6.3.2 Troubleshooting during calibration Symptom Possible cause Corrective actions Using the certificate, check whether the sensor code was entered correctly. If not SENSOR CODE Sensor code entered incorrectly having the certificate, carry out "Factory Calibration" (Factory cal). NITRATE Repeat the calibration. Error in the last nitrate calibration, sensor OFFSET Use the previous calibration. -
Page 37: Section 7 Spare Parts And Accessories
Section 7 Spare Parts and Accessories 7.1 Spare parts Description Catalog Number NO3D sc (sensor with 10 m (32.8 ft.) integral cable and one pre-calibrated Sensor Cartridge) LXV442.99.00002 Calibrated Sensor Cartridge 6188401 Cleaning brush LZY589 Locking ring kit 6176900 Opaque gasket... - Page 38 Spare Parts and Accessories...
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Page 39: Section 8 Contact Information
HACH Company Repair Service in the Repair Service in Canada: Repair Service in World Headquarters United States: Latin America, the Hach Sales & Service Caribbean, the Far East, P.O. Box 389 HACH Company Canada Ltd. Indian Subcontinent, Africa, Loveland, Colorado... - Page 40 Contact information HACH LANGE MAROC SARLAU Villa 14 – Rue 2 Casa Plaisance Quartier Racine Extension MA-Casablanca 20000 Tél. +212 (0)522 97 95 75 Fax +212 (0)522 36 89 34 info-maroc@hach-lange.com www.hach-lange.ma...
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Page 41: Section 9 Warranty And Liabilitylimited Warranty
In the event that a defect is discovered during the warranty period, Hach Company agrees that, at its option, it will repair or replace the defective product or refund the purchase price excluding original shipping and handling charges. - Page 42 On the basis of strict liability or under any other legal theory, in no event shall Hach Company be liable for any incidental or consequential damages of any kind...
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Page 43: Section 10 Certification
Section 10 Certification Electromagnetic compatibility The device has been tested with an sc100 and sc1000 controller for electromagnetic compatibility (EMC) in the industrial environment in accordance with the following standard(s): EN 61326 (EMC Requirements for Electrical Equipment for Measurement, Control and Laboratory Use) per 2004/108/EC: Supporting test records and compliance certification by the manufacturer. - Page 44 Certification...
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Page 45: Appendix A Modbus Register
Appendix A Modbus Register Table 4 Sensor Modbus Register Discrete Min/Max Tag Name Register # Data Type Length Description Range Range NITRATE NO3-N 40001 Float 0/2000 Nitrate in mg/L NITRATE NO3 40003 Float 0/2576 Nitrate in mg/L 40005 Float 0/2000 Cl- mg/L TEMP DEG C 40007... - Page 46 Modbus Register Table 4 Sensor Modbus Register (continued) Discrete Min/Max Tag Name Register # Data Type Length Description Range Range NO3 CONC 1 40079 Float 0/2576 NO3 mV CONC 1 40081 Float –250/400 NO3 mV drift 40083 Float –500/500 CONC 1 CL- CONC 1 40085 Float...
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Page 47: Index
Index Accessories ............. 37 Replacement of the sensor cartridge ....... 29 Replacement parts ........... 37 Calibration ............20 Cleaning Sensor Sensor ............... 29 Cleaning ............29 Components Diagnostics menu ..........19 System .............. 17 Installation ............15 Settings menu ........... 20 Setup ..............