wtw NitraLyt Plus 700 IQ Operating Manual
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wtw NitraLyt Plus 700 IQ Operating Manual

Iq sensor net modular sensor for nitrate
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Operating manual
®Plus
NitraLyt
700 IQ
IQ S
N
ENSOR
ET
Modular sensor for nitrate
ba75652e04
08/2009

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Summary of Contents for wtw NitraLyt Plus 700 IQ

  • Page 1 Operating manual ®Plus NitraLyt 700 IQ IQ S ENSOR Modular sensor for nitrate ba75652e04 08/2009...
  • Page 2 The latest version of the present operating manual can be found on the Internet under www.WTW.com. © Copyright Weilheim 2009, WTW GmbH Reprinting - even as excerpts - is only allowed with the explicit written authorization of WTW GmbH, Weilheim. Printed in Germany. ba75652e04 08/2009...

  • Page 3: Table Of Contents

    ®Plus NitraLyt 700 IQ Contents ®Plus NitraLyt 700 IQ - Contents Overview ........1-1 How to use this component operating manual .
  • Page 4 ®Plus Contents NitraLyt 700 IQ Measuring ........5-1 Measuring operation .

  • Page 5: Overview

    ®Plus NitraLyt 700 IQ Overview Overview How to use this component operating manual Structure of the IQ Sensor Net Operating Manual operating IQ S ENSOR manual System Operating Manual (Ring Binder) IQ Sensor MIQ Module MIQ Terminal Operating Operating Operating Manual Manual Manual...

  • Page 6: Structure Of The Nitrate Sensor Nitralyt

    NitraLyt 700 IQ is equipped with a chloride electrode. Note Information on the fundamentals of measuring with ion sensitive electrodes are given in the WTW primer, I ON SELECTIVE MEASUREMENT IN ONLINE ANALYSIS 1 - 2 ba75652e04 08/2009...
  • Page 7 ®Plus NitraLyt 700 IQ Overview ®Plus Operating modes and Due to its modular structure, the NitraLyt 700 IQ can be adapted electrode equipment to various requirements (see following table). Notes: The reference electrode has an extra receptacle marked by a recess. The ion sensitive electrodes can be mounted in the remaining two receptacles in any order.

  • Page 8: Recommended Fields Of Application

    D. O. measurement in the aeration tank of waste water treatment plants and enables an efficient process control of nitrogen removal. Note More detailed information on measuring with ion sensitive electrodes is given in the WTW primer, I ON SELECTIVE MEASUREMENT IN ONLINE ANALYSIS 1 - 4 ba75652e04...

  • Page 9: Safety Instructions

    ®Plus NitraLyt 700 IQ Safety instructions Safety instructions This component operating manual contains special instructions that ®Plus must be followed in the operation of the NitraLyt 700 IQ nitrate sensor. Thus, it is essential to read this component operating manual before carrying out any work using this sensor.

  • Page 10: Authorized Use

    The specified temperature (chapter 9 T ) must be ECHNICAL DATA maintained during the operation and transport of the sensor. Protect the sensor, particularly against frost or overheating. Caution The sensor may only be opened by specialists authorized by WTW. 2 - 2 ba75652e04 08/2009...
  • Page 11 ®Plus NitraLyt 700 IQ Safety instructions Safe operation If safe operation is no longer possible, the sensor must be taken out of operation and secured against inadvertent operation. Safe operation is no longer possible if the sensor: has been damaged in transport has been stored under adverse conditions for a lengthy period of time is visibly damaged...
  • Page 12 ®Plus Safety instructions NitraLyt 700 IQ 2 - 4 ba75652e04 08/2009...

  • Page 13: Commissioning

    Potassium chloride solution for storing the reference electrode Operating manual and WTW primer, I ON SELECTIVE MEASUREMENT IN ONLINE ANALYSIS Note Information on the available sets is given in the WTW catalog and on the Internet. ba75652e04 08/2009 3 - 1...

  • Page 14: Iq Sensor Net System Requirements

    ®Plus Commissioning NitraLyt 700 IQ IQ S system requirements ENSOR ®Plus Software statuses of the Operation of the NitraLyt 700 IQ requires the following software controller and terminal statuses in the IQ S , depending on the system: ENSOR components DIQ/S 182 Software: Version 3.21 or higher...

  • Page 15: Notes On The Handling Of The Electrodes

    ®Plus NitraLyt 700 IQ Commissioning Notes on the handling of the electrodes ®Plus The electrodes of the NitraLyt 700 IQ nitrate sensor were developed for the rough use in waste water treatment plants. They are, however, precision parts that can be damaged by inappropriate use. Therefore, exactly follow the instructions in the two following chapters.

  • Page 16: Measurement Electrodes And Compensation

    ®Plus Commissioning NitraLyt 700 IQ 3.3.2 Measurement electrodes and compensation electrodes Commissioning Electrode Watering cap Sealing ring Fig. 3-2 Measurement electrode or compensation electrode with storing aids In the delivery condition, each electrode is equipped with a watering cap and a nut that protects the screw-in thread. Prior to installation, first remove the watering cap and, using the special hexagon key, unscrew the electrode from the nut.

  • Page 17: Preparing The Sensor For Measurement

    ®Plus NitraLyt 700 IQ Commissioning Preparing the sensor for measurement 3.4.1 Equipping the sensor with electrodes Caution The sensor can be damaged by dirt and moisture. Before mounting the electrodes make sure the area behind the sealing ring of the electrodes and the receptacle are dry and clean. The ®Plus NitraLyt 700 IQ may only be submersed when the electrodes...

  • Page 18: Mounting The Protective Hood

    Information on the required ENSOR components is given in the WTW catalog and on the Internet. If no CH cleaning head is used the standard protective hood should always be mounted for measuring. It protects the electrodes from rough mechanical impact.

  • Page 19: Connecting The Sensor To The Iq S

    Do not suspend the sensor on the sensor connection cable. Use an armature or electrode holder. Information on this and other IQ S ENSOR accessories is given in the WTW catalog and on the Internet. Note How to connect the SACIQ sensor connection cable to the...
  • Page 20 ®Plus Commissioning NitraLyt 700 IQ Are the plug Before connecting the sensor and sensor connection cable, make sure connections dry? that the plug connections are dry. If moisture gets into the plug connections, first dry the plug connections (dab them dry or blow them dry using compressed air).

  • Page 21: Settings

    ®Plus NitraLyt 700 IQ Commissioning Settings 3.5.1 General information ®Plus Automatic electrode The NitraLyt 700 IQ software automatically recognizes the built-in recognition electrodes and checks the equipment for validity. If the sensor is correctly equipped it is displayed in the list of sensors with the designation, "NitraLyt+".

  • Page 22: Nitralyt+ Setting Table

    TThe measured value is accordingly corrected by the entered chloride content. Note: Detailed information on the subject of chloride compensation is given in the WTW primer, I ON SELECTIVE MEASUREMENT IN ONLINE ANALYSIS Calib. history Cl Do not download...
  • Page 23 ®Plus NitraLyt 700 IQ Commissioning Menu item Selection/values Explanations IQ-LabLink active active (standard setting): During the matrix adjustment, operating not active steps for the data transfer with the IQ- LabLink procedure by means of a USB memory device are offered (see section 4.2.3) not active: During the matrix adjustment, operating...
  • Page 24 ®Plus Commissioning NitraLyt 700 IQ 3 - 12 ba75652e04 08/2009...

  • Page 25: Matrix Adjustment, Check And Calibration

    ®Plus NitraLyt 700 IQ Matrix adjustment, check and calibration Matrix adjustment, check and calibration General information ®Plus Calibration free The NitraLyt 700 IQ nitrate sensor is immediately ready to operation measure after being equipped with electrodes. For precise measurements, it is only necessary to adjust the electrodes to the sample matrix ("matrix adjustment").
  • Page 26 ®Plus Matrix adjustment, check and calibration NitraLyt 700 IQ Drift potential Simultaneously with the matrix adjustment (or calibration), the drift voltage DV(mV) of the combination electrode is determined. It serves to evaluate the long-term behavior of the combination electrode. The drift voltage changes due to the following factors: Influences due to the sample composition (matrix) Change of the characteristics of the combination electrode.

  • Page 27: Matrix Adjustment

    ®Plus NitraLyt 700 IQ Matrix adjustment, check and calibration Matrix adjustment 4.2.1 General information on matrix adjustment This procedure adjusts the value measured directly in the test sample to an independently determined reference value ("lab value"). To determine the reference values, a sample is taken from the measuring solution and the relevant concentrations are measured (e.g.
  • Page 28 ®Plus Matrix adjustment, check and calibration NitraLyt 700 IQ Practical instructions The nitrate concentration has to be determined immediately after taking the sample as the nitrate content changes very quickly due to the micro organisms that are present. It is best to take the sample using a syringe filter for transport to the laboratory or to stabilize it otherwise.

  • Page 29: Matrix Adjustment With The Iq-Lablink Procedure

    The detailed description of the cross instrument operating steps for the matrix adjustment with the IQ-LabLink procedure on the IQ S and the photometer is given in an additional operating ENSOR manual. This operating manual can be downloaded from the Internet under www.wtw.com. ba75652e04 08/2009 4 - 5...

  • Page 30: Result Of The Matrix Adjustment

    ®Plus Matrix adjustment, check and calibration NitraLyt 700 IQ 4.2.4 Result of the matrix adjustment Evaluation After the matrix adjustment, the system automatically evaluates the current condition of the electrode(s) based on the drift voltage. For a successful matrix adjustment, the drift voltage must be within the range -45 mV to +45 mV.
  • Page 31 ®Plus NitraLyt 700 IQ Matrix adjustment, check and calibration The history of matrix adjustments contains the following information: Date Date of the matrix adjustment Slope [mV] of the electrode. The slopes are marked by a star (*) because they were not changed by the matrix adjustment or reset to the default condition with the electrode zeroing.

  • Page 32: Check And Calibration In Standard Solutions

    ®Plus Matrix adjustment, check and calibration NitraLyt 700 IQ Check and calibration in standard solutions 4.3.1 General information on checking and calibrating In addition to the comparison measurement or matrix adjustment under real measurement conditions, it is possible to check the function of the entire sensor in standard solutions.
  • Page 33 The procedure can, however, be used as a mere check method. Calibration is documented in the calibration history and in the log book. Standard solutions For the check or calibration, the following two WTW standard solutions are required in this order: ® VARiON /ES-2 (high concentration) ®...

  • Page 34: Result Of The Check

    ®Plus Matrix adjustment, check and calibration NitraLyt 700 IQ Preparations and Select a place where clean working conditions and a constant, instructions on how to sufficiently high temperature are granted (a room, e.g. laboratory). keep the basic Temperatures under 10 °C extend the conditioning time conditions considerably.

  • Page 35: Result Of The Calibration

    ®Plus NitraLyt 700 IQ Matrix adjustment, check and calibration 4.3.3 Result of the calibration Evaluation With calibration, the system automatically evaluates the condition of a combination electrode based on the data of its characteristic curve. The drift potential and slope are evaluated separately. For a calibration procedure to be valid, the potential level, slope and drift voltage must be within certain ranges.
  • Page 36 ®Plus Matrix adjustment, check and calibration NitraLyt 700 IQ Calibration history In the calibration history, a calibration has the entries ES1 and ES2 in (available in the the Ref1 and Ref2 columns which the matrix adjustment has not: IQ S systems ENSOR 184 XT, 2020 XT and...
  • Page 37 ®Plus NitraLyt 700 IQ Matrix adjustment, check and calibration Note The calibration history of the chloride electrode is not output with the calibration history of the sensor (NitraLyt+). If necessary, you can generate a log book message with the calibration history via the menu item, Calib.
  • Page 38 ®Plus Matrix adjustment, check and calibration NitraLyt 700 IQ 4 - 14 ba75652e04 08/2009...

  • Page 39: Measuring

    700 IQ can be influenced by the presence of chloride ions. Note The effects of influencing variables on measurement and compensating actions are described in detail in the WTW primer, I SELECTIVE MEASUREMENT IN ONLINE ANALYSIS ba75652e04 08/2009 5 - 1...
  • Page 40 ®Plus Measuring NitraLyt 700 IQ 5 - 2 ba75652e04 08/2009...

  • Page 41: Maintenance And Electrode Exchange

    ®Plus NitraLyt 700 IQ Maintenance and electrode exchange Maintenance and electrode exchange General maintenance notes Warning Contact with the sample can be dangerous for the user! Depending on the type of sample, suitable protective measures must be taken (protective clothing, protective goggles, etc.). Maintenance condition We recommend to switch on the maintenance condition each time the sensor is taken out of the measuring position.
  • Page 42 ®Plus Maintenance and electrode exchange NitraLyt 700 IQ ® Fig. 6-1 Sample equipment of the VARiON Case calibration and maintenance case Blind plug Special socket wrench Polishing strip Replacement electrodes with watering caps Compartments for various accessories (wiping cloths, sample bottles, personal protective equipment etc.) Recess for sensor Storing solution for reference electrode...

  • Page 43: Exterior Cleaning

    ®Plus NitraLyt 700 IQ Maintenance and electrode exchange Exterior cleaning Note To keep the electrodes clean, we recommend to use the CH cleaning head (see chapter 7 R EPLACEMENT PARTS AND ACCESSORIES With normal operation (e.g. municipal wastewater) we strongly recommend to clean the outside of the sensor and calibrate: when it is strongly contaminated (after visual check) if erroneous measured values are suspected...
  • Page 44 ®Plus Maintenance and electrode exchange NitraLyt 700 IQ Cleaning the coupling The coupling ring can be unscrewed and dismantled for cleaning as ring of the protective follows: hood Fig. 6-2 Dismantling the coupling ring Remove the retaining ring (pos. 1 in Fig. 6-2). Remove the intermediate ring (pos.

  • Page 45: Exchanging The Electrodes

    ®Plus NitraLyt 700 IQ Maintenance and electrode exchange Exchanging the electrodes Caution The sensor can be damaged by dirt and moisture. Each time before dismantling an electrode carefully clean the area around the electrodes (section 6.2). Before mounting an electrode make sure the area behind the sealing ring of the electrode and the ®Plus receptacle are dry and clean.

  • Page 46: Polishing The Chloride Electrode

    ®Plus Maintenance and electrode exchange NitraLyt 700 IQ Polishing the chloride electrode Caused by the test medium, a coating can develop on the surface of the chloride electrode, which reduces the electrode slope. To maintain a proper chloride compensation the surface must be renewed by polishing at regular intervals.

  • Page 47: Replacement Parts And Accessories

    ®Plus NitraLyt 700 IQ Replacement parts and accessories Replacement parts and accessories Electrodes Exchange electrodes Description Model Order no. ® Reference electrode VARiON 107042 ®Plus Nitrate electrode VARiON 107045 ®Plus Nitrate electrode VARiON NO3-HS 107045 (high selective) ®Plus Chloride electrode VARiON 107047 Storing equipment...
  • Page 48 Air compressor for supply of the Cleaning Air Box sensor cleaning system with 115 VAC 480017 compressed air 230 VAC 480019 Note Information on other IQ S accessories is given in the WTW ENSOR catalog and on the Internet. 7 - 2 ba75652e04 08/2009...

  • Page 49: What To Do If

    ®Plus NitraLyt 700 IQ What to do if ... What to do if ... Interpretation of the drift voltage The drift voltage is influenced by the potential levels of the measurement electrode and reference electrode. If the potential levels shift, e.g. caused by aging, both parts can move into the same direction or into opposite directions.

  • Page 50: Error Causes And Remedies

    ®Plus What to do if ... NitraLyt 700 IQ Error causes and remedies No measured value Cause Remedy display – Sensor not connected – Connect the sensor – Incorrect electrode – Correct electrode equipment equipment – Electrode(s) not at all or –...
  • Page 51 ®Plus NitraLyt 700 IQ What to do if ... Cause Remedy – Electrode contaminated – Clean the electrode (see section 6.2) – Liquid in the sensor shaft – Sensor defective, send it back Measurement provides Cause Remedy jumping, unstable or –...
  • Page 52 ®Plus What to do if ... NitraLyt 700 IQ Faulty result of the Cause Remedy matrix adjustment – Error during procedure, e.g. – Check the basic conditions incorrect lab values – Follow the practical notes on page 4-4 or in the online help –...

  • Page 53: Technical Data

    ®Plus NitraLyt 700 IQ Technical data Technical data Measuring characteristics Measuring principle Potentiometric measurement by means of ion sensitive electrodes. Modular structure with jointly used reference electrode and ion sensitive electrodes. Integrated microprocessor electronics, screened 2-wire connection for power and data transmission. Measured parameters Main measured parameter Nitrat...

  • Page 54: Application Conditions

    ®Plus Technical data NitraLyt 700 IQ Temperature automatic in the range 0 °C ... 40 °C (32 ... 104 °F) compensation Application conditions Allowed Measuring medium 0 °C ... 40 °C (32 ... 104 °F) temperature range Storage/transport 0 °C ... 40 °C (32 ... 104 °F) Allowed pH range of the 4 ...

  • Page 55: Electrical Data

    ®Plus NitraLyt 700 IQ Technical data Weight (without sensor approx. 670 g with protective hood connection cable) Connection technique Connection via SACIQ sensor connection cable Material Shaft V4A stainless steel 1.4571 Protective hood Electrode support Temperature probe V4A stainless steel 1.4571 Plug head connector housing ®...

  • Page 56: Data Of The Varion ®Plus Electrodes

    ®Plus Technical data NitraLyt 700 IQ ®Plus Data of the VARiON electrodes 9.5.1 Response times ®Plus ®Plus VARiON NO3 / VARiON ®Plus VARiON NO3-HS Response time t < 3 min < 3 min Measured at 20 °C (68 °F) and 5 to 50 mg/l 10 to 100 mg/l a concentration change of ...

  • Page 57: Indexes

    ®Plus NitraLyt 700 IQ Indexes Indexes 10.1 Explanation of the messages This chapter contains a list of all the message codes and related message texts that can occur in the log book of the IQ S ENSOR ®Plus system for the NitraLyt 700 IQ sensor.

  • Page 58: Info Messages

    Message text EIA523 Incorrect equipment * for correct electrode equipment see operating manual ES1523 Component hardware defective * Contact WTW 10.1.2 Info messages Message code Message text IC4523 Cl electrode has been successfully calibrated * For calibration data, see calibration history...

  • Page 59: Status Info

    ®Plus NitraLyt 700 IQ Indexes 10.2 Status info The status info is a piece of coded information about the current state of a sensor. Each sensor sends this status info to the controller. The status info of sensors consists of 32 bits, each of which can have the value 0 or 1.
  • Page 60 ®Plus Indexes NitraLyt 700 IQ 10 - 4 ba75652e04 08/2009...

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