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23

Section 6

Maintenance

Proper maintenance of the measuring windows in the sensor is critical for accurate 
measurements. The measuring windows should be checked monthly for soiling and the 
wiper profile checked for wear.

6.1 Maintenance schedule

C A U T I O N

Pinch Hazard. Only qualified personnel should conduct the tasks described in this section of the 
manual. 

N O T I C E

The seals must be replaced by the manufacturer’s Service Department. For more information, 
see the instruction sheet of the flow-through accessories for NITRATAX sc.

Maintenance Task

weekly

6 months

Annually

as per counter

Visual inspection

X

Check calibration

X 

(depending on the 

ambient conditions)

Inspection

X (counter)

Seal change

X (counter)

Wiper profile change

X

Wearing parts

Quantity

Description

Average service life

1

1 

Under normal operating conditions using factory settings.

1

Wiper sets

1 year

1

Wiper motor

5 years

1

Seal set

1 year

1

Light bulb

10 years

2

Measuring window

5 years

1

Filter set

5 years

2

O-ring flow unit

1 year

Содержание NITRATAX clear sc

Страница 1: ...DOC023 52 03211 NITRATAX sc USER MANUAL 11 2014 Edition 6A HACH Company 2007 2012 2014 All rights reserved Printed in Germany sd sk ...

Страница 2: ......

Страница 3: ...15 4 1 Power the instrument 15 Section 5 Operation 17 5 1 Use of an sc controller 17 5 2 Sensor setup 17 5 3 Sensor data logging 17 5 4 Sensor diagnostics menu 18 5 5 Sensor setup menu 18 5 6 Sensor calibration 20 5 6 1 Adjusting turbidity compensation 22 Section 6 Maintenance 23 6 1 Maintenance schedule 23 6 2 Clean the measuring path 24 6 3 Change the wiper profile 25 6 4 Check the calibration 2...

Страница 4: ...2 Table of Contents ...

Страница 5: ... 5 0 1 Sludge compensation yes yes Measuring interval min 1 5 5 T100 response time min 1 15 5 Integration 1 min adjustable 15 30 min adjustable 5 min adjustable Power consumption 2 W Cable length 10 m 30 ft Sensor pressure limit maximum 0 5 bar 7 psi Ambient temperature 2 to 40 C 36 to 100 F Dimensions D x L Figure 1 on page 5 approximately 70 x 229 333 mm 3 x 13 1 in approximately 75 x 323 mm 3 x...

Страница 6: ...teel 1 4581 Wiper profile Silicone Measuring windows SUPRASIL quartz glass Enclosure seals Silicone Seal cable gland PVDF Sensor cable PUR 10 m 33 ft standard Optional extension cables available in 5 10 15 20 30 50 m Total maximum length 60 m 196 ft Struts Adaptor for filtration sensor Stainless steel 1 4308 Struts Stainless steel 1 4301 Flow through cell bypass Measuring cell PVC Seals EPDM Gland...

Страница 7: ...5 Specifications Figure 1 Sensor dimensions 1 NITRATAX plus sc 4 Wiper profile 1 and 2 mm 0 04 in and 0 08 in 2 NITRATAX clear sc 5 Wiper profile 5 mm 0 20 in 3 NITRATAX eco sc ...

Страница 8: ...6 Specifications ...

Страница 9: ...zardous situation that may result in minor or moderate injury NOTICE Indicates a situation which if not avoided may cause damage to the instrument Information that requires special emphasis This symbol if noted on the instrument references the instruction manual for operation and or safety information Electrical equipment marked with this symbol may not be disposed of in European public disposal s...

Страница 10: ... pumping and conditioning in activated sludge tanks in municipal sewage treatment plants The NITRATAX clear sc Figure 2 item 3 measures the nitrate concentration up to 20 mg L N directly immersed in the medium Use the sensor without the need for pumping and conditioning in clear media such as surface water treated drinking water and sewage treatment plant outlets Note The flow through units of the...

Страница 11: ... contains a two beam absorption photometer with turbidity compensation The measuring window is mechanically cleaned using a wiper The measuring and cleaning intervals can be entered using the related controller The measured value is displayed as NOx nitrogen in mg L NOx N NO2 N is included in the measured result as nitrite nitrogen and provided on current outputs Various operating modes for the ou...

Страница 12: ...10 General Information ...

Страница 13: ...d out by qualified experts in accordance with all local safety regulations See the mounting instruction sheet for more information Figure 4 Installation example with optional accessories 1 sc controller with optional sun roof 4 Minimum distance of 100 mm 3 94 in to the ground 2 Sensor bracket 5 NITRATAX plus sc 468 472 mm 18 4 19 6 in NITRATAX eco sc 466 mm 18 3 in NITRATAX clear sc 462 mm 18 1 in...

Страница 14: ...troller Refer to Figure 7 for more information To attach the sensor to the controller with the quick connect fitting 1 Unscrew the protective cap on the socket on the controller Figure 6 Retain the protective cap to seal the connector opening in case the sensor must be removed Figure 5 Items supplied 1 NITRATAX sc sensor with cable 3 1 wiper set 5 pieces for 1 or 2 mm 0 04 in and 0 08 in sensors 2...

Страница 15: ...ptional cables may be purchased to extend the sensor cable length see Section 8 on page 31 Figure 6 Attach the sensor to the controller with the quick connect fitting Figure 7 Sensor connector pin assignment Terminal number Terminal description Wire color code 1 12 VDC brown 2 Mass Circuit common black 3 Data blue 4 Data white 5 Screen Shield Screen Shield grey 6 Notch 1 2 3 4 5 6 ...

Страница 16: ...14 Installation ...

Страница 17: ...n the controller is switched on for the first time a menu for selecting the language opens automatically Select the required language 4 Following language selection and upon subsequent power up the controller will search for connected sensors The display will show the main measurement screen Press the MENU key to access the menus ...

Страница 18: ...16 System Start Up ...

Страница 19: ...e 18 PARAMETER MEAS UNIT MEAS INTERVAL RESPONSE TIME CLEANING WIPER MODE BYPASS TEST MAINT SET DEFAULTS 5 3 Sensor data logging The sc controller provides a data log and an event log for each sensor The data log contains the measured data at selected intervals The event log contains a large number of events that occur on the instruments such as configuration changes alarms and warnings etc The dat...

Страница 20: ... going into the menu Active transmits the current level readings corrected with previous calibration data until new data is entered Set Transfer transmits the value designated during the system setup CAL INTERVAL Enter number of days SET CAL DEFLT The instrument resets the settings to the default configuration CONFIGURATION EDIT NAME Can be edited as required up to 10 characters PARAMETER NOx N or...

Страница 21: ...of connected sensor NITRATAX plus eco clear LOCATION SERIAL NUMBER serial number of connected sensor RANGE Measuring range corresponding to the measuring path PATH LENGTH Width of the measuring path WIPER P N Item number MODEL NUMBER Item number SOFTWARE VERS Sensor software DRIVER VERS STRUCTURE FIRMWARE CONTENT PRODUCTION DATE Production date CAL DATA Overview of OFFSET FACTOR DATE DEXT 100 DEXT...

Страница 22: ...sages MOTOR Counter FLASH Counter MAINT PROC Select REPLACE PROFILE SERVICE DONE WIPERTEST SIGNALS or OUTPUT MODE REPLACE PROFILE see 6 3 on page 25 SERVICE DONE ARE YOU SURE Confirm or press BACK key Confirm The instrument resets the settings after a prompt confirmation to the default configuration Press BACK key to return to the MAINT PROC menu WIPERTEST Select WIPE or DRIVE OUT WIPER or MOTOR C...

Страница 23: ...L and confirm 17 FILL IN STANDARD PRESS ENTER TO CONTINUE is displayed Select Option 1 or Option 2 Option 1 Insert the verification filter now to calibrate Option 2 Adjust the sensor calibration using a standard solution or a user specific measuring solution and laboratory spectrophotometer Confirm 18 PRESS ENTER WHEN STABLE CONC X X mg l NO3 DEXT X X mE is displayed Note the mE value if working w...

Страница 24: ...iltrate into the measuring path of the sensor As an alternative the measured value can also be determined by a laboratory measurement for NO2 N and NO3 N 3 Select 1 SAMPLE CAL and measure the filtered sample 4 Turn the wiper on and add sample until the measured value is stable 5 Immerse the sensor in the activated sludge tank 6 Start the wiper several times until a stable result is obtained for th...

Страница 25: ...manufacturer s Service Department For more information see the instruction sheet of the flow through accessories for NITRATAX sc Maintenance Task weekly 6 months Annually as per counter Visual inspection X Check calibration X depending on the ambient conditions Inspection X counter Seal change X counter Wiper profile change X Wearing parts Quantity Description Average service life1 1 Under normal ...

Страница 26: ...d confirm 4 Select TEST MAINT and confirm 5 Select MAINT PROC and confirm 6 Confirm the displayed OUTPUT MODE information 7 Select SIGNALS and confirm 8 Confirm ENTER WIPE 9 Remove sensor from the tank Depending on the degree and nature of the soiling clean measuring path using window cleaner grease remover or 5 hydrochloric acid the operation of the wiper arm using WIPERTEST WIPE can assist the c...

Страница 27: ...rough accessories for NITRATAX sc 7 Confirm the displayed OUTPUT MODE information 8 Select REPLACE PROFILE and confirm 9 Lift the retaining strap Figure 8 item 1 move the cap bottom up and remove it Figure 8 item 2 and 3 10 Confirm REMOVE CAP Note Only on instrument versions with 1 or 2 mm measuring path 11 The wiper extends automatically Exchange the wiper profile Figure 8 item 4 and replace the ...

Страница 28: ...ect SIGNALS and confirm 8 Confirm ENTER WIPE 9 Tank version Remove sensor from the tank rinse the measuring path with water and fill it with standard solution pipette see Figure 9 on page 27 Flow through version Interrupt sample feed and supply with standard solution syring Observe the individual measured values on the display 3rd numerical value from the top The measurements are made automaticall...

Страница 29: ...27 Maintenance Figure 9 Check the calibration tank version 1 NITRATAX sc 2 Pipette with standard solution ...

Страница 30: ...28 Maintenance ...

Страница 31: ...NT PROC SIGNALS MOIST Remove sensor from the tank and call service R M Call service DEXT 0 0 Complete a Zero point calibration W POS UNKNOWN Check measuring path complete a wiper test W BLOCKED Check measuring path complete a wiper test FLASH FAILURE Call service R TOO HIGH Call service Wiper sealing Call service the wiper is deactivated Sensor is missing Prove connection Table 2 Warnings Warning ...

Страница 32: ...30 Troubleshooting ...

Страница 33: ...9 53220 Includes Base LZY827 Fastening lug LZY804 Retaining clamp 2x LZX200 Mounting pipe 2 m LZY714 99 00020 Hardware HS LZY823 90 sensor adapter LZY714 99 50000 Set of small parts for mounting hardware LZY822 Extension pipe 1 8 m 5 91 ft LZY714 99 00030 Extension pipe 1 0 m 3 28 ft LZY714 99 00040 Second fastening point with retaining clamp LZY714 99 03000 Flow through unit for NITRATAX plus sc ...

Страница 34: ...eplacement Parts and Accessories 8 3 Wearing parts Description Catalog Number Wiper profile 1 mm 0 04 in 5 pieces LZX148 Wiper profile 2 mm 0 08 in 5 pieces LZX012 Wiper profile 5 mm 0 20 in 5 pieces LZX117 ...

Страница 35: ...32 0 15 41 61 20 info hach lange be www hach lange be DR LANGE NEDERLAND B V Laan van Westroijen 2a NL 4003 AZ Tiel Tel 31 0 344 63 11 30 Fax 31 0 344 63 11 50 info hach lange nl www hach lange nl HACH LANGE APS Åkandevej 21 DK 2700 Brønshøj Tel 45 36 77 29 11 Fax 45 36 77 49 11 info hach lange dk www hach lange dk HACH LANGE AB Vinthundsvägen 159A SE 128 62 Sköndal Tel 46 0 8 7 98 05 00 Fax 46 0 ...

Страница 36: ...na Severa bb HR 42 000 Varaždin Tel 385 0 42 305 086 Fax 385 0 42 305 087 info hach lange hr www hach lange hr 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 HACH LANGE OOO Finlyandsky prospekt 4A Business Zentrum Petrovsky fort R 803 RU 194044 Sankt Peters...

Страница 37: ...st 7 days after the identification of the fault If the customer fails to notify the supplier the product is considered approved despite the defect Further liability for any direct or indirect damages is not accepted If instrument specific maintenance and servicing work defined by the supplier is to be performed within the warranty period by the customer maintenance or by the supplier servicing and...

Страница 38: ...36 Warranty and liability ...

Страница 39: ...40025 Integer 2 R profile counter motor_cycles 40027 Integer 2 R motor cycles flash_counter 40029 Integer 2 R flash counter sealing_counter 40031 Integer 2 R sealing counter service_counter 40033 Integer 2 R service counter operating_hours 40035 Integer 2 R operating hours shaft_sealing_counter 40037 Integer 2 R shaft sealing counter profile reset val 40039 Integer 2 R W profile reset val seals re...

Страница 40: ...06 Integer 1 R wiper motor current in mA resp_time_min 40107 Integer 1 R response time in min flash_per_fil 40108 Integer 2 R flash per filter cm1 40110 Float 2 R W meas Cap 1 cm2 40112 Float 2 R W meas cap 2 cr1 40114 Float 2 R W ref cap1 cr2 40116 Float 2 R W ref cap2 lambda_m 40118 Float 2 R W lambda meas lambda_r 40120 Float 2 R W lambda ref transm_m 40122 Float 2 R W transmission meas transm_...

Страница 41: ...Messages 29 I Installation 11 M Maintenance 23 Maintenance Schedule 23 Modbus 37 P Pin assignment 13 S Sensor Calibration 20 Diagnostics menu 18 overview 8 Sensor setup 17 Specifications 3 T Theory of operation 9 Troubleshooting 29 Turbidity compensation 22 U Unpacking 12 W Warnings 29 Wear part 32 Weight 3 Wiper profile 25 ...

Страница 42: ...40 Index ...

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