Page 1 Operating Instructions Sodium Analyser Digox 601 sodium...
Page 2 Digox 601 sodium Copyright Copyright Make sure to read the documentation carefully before Lesen Sie diese Dokumentation vor der Installation installing or commissioning the unit, and ensure com- oder Inbetriebnahme sorgfältig und beachten Sie die pliance with all safety regulations. Dr. Thiedig + Co Sicherheitshinweise.
Page 3: Table Of Contents
Intended use ..........................8 Storage ............................8 Features and characteristics of the Digox 601 sodium ............... 8 Technical Data ..........................9 Measuring principle and structure of measuring chain .............. 10 ...
Page 4 Digox 601 sodium Commissioning and decommissioning of the Digox 601 sodium ..........39 Commissioning .......................... 39 4.1.1 Short description of commissioning/preconditions for commissioning ........39 4.1.2 Adjustment of sample flow ......................39 ...
Page 5: General Information
This technical information contains instructions for the installation and commissioning as well as the maintenance and repair of the measurement device Digox 601 sodium, which is described in the following. For the purpose of clarity, this document does not consider any and all detailed information regarding every single type or every possible way of installation and operation.
Page 6: Safety Guidelines
Digox 601 sodium Safety Guidelines In this technical information, the accentuations Warning, Caution and Notice shall have the following meaning: Warning! This heading indicates that any inaccurate adherence or non-adherence to the operating instructions, work in- structions, prescribed work flows and similar could lead to injuries or accidents.
Page 7 Digox 601 sodium Warning! The Digox 601 sodium may only be operated and maintained by persons familiar with the analyser who have read and understood the operating instructions at hand. Warning! The installation and connection of the device and its additional components (e.g. recorder) are to be carried out in accordance with the relevant safety provisions.
Page 8: Introduction
Monitoring of process-related mixed bed exchangers o Monitoring of the water quality of the water-steam cycle Warning! For the Digox 601 sodium, the use of diisopropylamine is required. The tightness of the test tube and the gassing hoses is to be checked regularly! Storage Principally, the measurement device is to be stored in a dry place protected from moisture.
Page 9: Technical Data
Digox 601 sodium Technical Data Mains voltage 85…265 V, 48 – 63 Hz, parameter protection without batteries Power input 40 VA Protection class IP65 (measuring transducer), IP54 (external housing) in accordance with DIN EN 61000-6-3 and DIN EN 61000-6-4 Display...
Page 10: Measuring Principle And Structure Of Measuring Chain
Digox 601 sodium Measuring principle and structure of measuring chain The Na measurement is carried out potentiometrically with ion-selective electrodes, and can be described by means of the Nernst equation: ∑ − log( measured voltage signal standard potential RT/nF Nernst factor or slope factor/inclination as quotient of the product of the universal gas constant R...
Page 11: Ppe/Speciality Tools Required
Digox 601 sodium pH electrode Reference electrode Measuring elec- trode Reference container Ceramic diaphragm Temperature sensor PT100 Gassing Medium inlet Overall outlet Fig. 1 Structure of the measuring chain in a flow-through valve The benefits of such a set-up are:...
Page 12: Installation Of Digox 601 Sodium
Digox 601 sodium Installation of Digox 601 sodium Unpacking When accepting the delivery, the packaging is to be checked for external damage. Any possible damage is to be documented and immediately reported to Dr. Thiedig + Co. KG. The disposal of the transport packaging and the packaging material is to be carried out in accordance with the customer's waste management concept.
Page 13: Assembly
Digox 601 sodium Assembly 2.3.1 Installation requirements, anchorage points, connections The analyser is to be installed within a dry, vibration-free environment. The analyser should be protected against direct solar radiation. The analyser is to be installed in a horizontal position, on a vertical support plate (assembly plate or wall).
Page 14: Swivelling Out Of The Swing Gate
Digox 601 sodium 2.3.2 Swivelling out of the swing gate The four screws in each corner of the base plate are to be loosened with an Allen wrench (SW 6) and the swing gate is to be folded out of the analyser housing. (see Fig. 3 and Fig. 4) Retaining screw Fig.
Page 15: Hydraulic Connection
Digox 601 sodium Hydraulic connection 2.4.1 Medium inlet The position of the sample inlet is shown in Fig. 5. The connection is carried out via a hose with an external diame- ter of 6mm. The hose is inserted into the fitting at the housing.
Page 16: Electrical Connection
Digox 601 sodium Caution! If the swing gate is swivelled out when the device is opened, the hoses are to be pulled back into the housing. After swivelling in, the hoses are to be pulled out of the housing again, in order to guarantee free outflow. When swivelling in the swing gate, the hoses must not be jammed or folded.
Page 17: Power Connection
When inductive loads are to be switched, they must either be interference-suppressed or the relay con- tact must be protected by means of an RC protective circuit at the terminal plate of the Digox 601 sodium , in accordance with the following tables and schematic circuit diagrams.
Page 18: Flow Monitoring
2.5.6 Relay outlet The analyser Digox 601 sodium comprises an alarm relay with a potential-free exchanger. The relay is activated under failure-free operation (contact closed) and opens in case of failure. Functional reliability and wire breakage protection are thus guaranteed (for illustration of the relay connection see terminal connection plan chap. 2.5.8 or 2.5.9).
Page 19: Serial Interface (Option)
The values for the maximum contact load can be obtained from the Technical Data in chapter 1.4. 2.5.7 Serial Interface (option) Optionally, the analyser Digox 601 sodium can be equipped with a serial interface RS485. Notice: RS485 has the following specifications: baud rate 9600, 8 data bits, 1 start and 1 stop bit, no parity, maximum cable length 1,200m.
Page 20: Terminal Connection Plan With Measuring Turbine
Digox 601 sodium 2.5.8 Terminal connection plan with measuring turbine Caution! The connection of the supply voltage is not executed via the circuit board of the device, but at the remote terminal block (see Fig. 11). 20/110...
Page 21: Terminal Connection Plan With Level Switch
Digox 601 sodium 2.5.9 Terminal connection plan with level switch Notice: Flow monitoring via level switch is integrated in the devices as of serial number 64101103000047. 21/110...
Page 22 Digox 601 sodium Caution! The connection of the supply voltage is not executed via the circuit board of the device, but at the remote terminal block (see Fig. 11). Terminal block Fig. 11 Remote terminal block for supply voltage 22/110...
Page 23: User Interface/Assembly Of The Device
Digox 601 sodium User interface/assembly of the device Main components The Na+ analyser Digox 601 sodium comprises the following main components (see Fig. 12) o Overflow container with integrated flow monitoring (level switch) or upstream flow monitoring (measuring turbine), o Media pump with upstream sample filter, conveying quantity approx. 2l/h, o Distribution header with screwed-onto 3/2-way solenoid valve.
Page 24 Digox 601 sodium Notice: The interaction of the above-mentioned components is described in chapter 3.2. Caution! Neither the rates of the measuring water and the calibration pump set under code 099 in the "Basic settings" menu, nor the times for recording the measured values, forward motion Kal1 and Kal2 and the left-hand motion of the pumps must be changed! Fig.
Page 25: Functions And Operating Conditions
Flow diagram The flow diagram in Fig. 14 illustrates the functioning of the Digox 601 sodium. In this regard, please also consider Fig. 12 and Fig. 13, in order to be able to reason the real conditions from the flow diagram.
Page 26: Operating Condition "Measuring" (Blue Line)
Digox 601 sodium 3.2.2 Operating condition "measuring" (blue line) The sample water enters the overflow container, from which 2l/h are taken via the sample pump. Via the 3/2-way solenoid valve, the medium is directly conducted into the distribution header and into the acrylic glass cell for measurement.
Page 27: Operating Condition "Alkalifying " (Blue And Green Line)
Digox 601 sodium 3.2.4 Operating condition "alkalifying " (blue and green line) The operating condition "Alkalifying" must not be isolated from the sample flow, but is a necessary precondition for the Na+ measurement. Here, air is sucked in via a vibrating diaphragm pump and conducted through the gas com- partment of an original diisopropylamine bottle.
Page 28: Operator Panel And Operating Elements
Digox 601 sodium Operator panel and operating elements LCD display, four-line backlit display "ESC" key enables return to measuring menu at all times Cursor key "left" (leave menu item and save) Cursor key "up" (menu control key, increase value within a menu item) Cursor key "right"...
Page 29: Description Of Display Functions
Digox 601 sodium Description of display functions All display values and menu items are depicted via a four-line backlit LCD display, showing 16 characters per line. The measuring menu looks as follows: 00.0 ppb 10.80 pH 025°C Start/Stop Error messages...
Page 30: Menu Structure Digox 601 Sodium
In the following, the menu structure of the Digox 601 sodium will be described. When navigating through the menu levels of the Digox 601 sodium the active buttons required for selection and/or alteration are shown on the right-hand side of the display (see also 3.4). For selecting and/or altering values, please follow the descriptions of the corresponding structure overview of the attached operating matrix.
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Page 32 Digox 601 sodium 3.5.2.2 Operating matrix Main menu Maintenance Maintenance switched-off 4 actuate Calibrate Na measuring value xxx ppb Start 3& Cal. interval xxx h Slope factor xxx mV Calibrate pH measuring value xxx pH Calibrate 3& bet. Slope factor...
Page 33 Digox 601 sodium Basic settings for code 099 see chap. for code 086 see chapter Service device data device no. No. xxx Software status M/Y xxx Date of production M/Y xxx Analogue inlets Inlet 1 xxx mV Inlet 2 xxx mV...
Page 34: Basic Settings Code 086
Digox 601 sodium 3.5.3 Basic settings code 086 3.5.3.1 Structure 34/110...
Page 35 Digox 601 sodium 3.5.3.2 Operating matrix Correct. Pt 100 correct. Pt100 +/- x°C Calibrated data buffer solution 1 xxx pH Buffer solution 2 xxx pH Internal buffer xxx pH pH regulator nominal value xxx pH P range xxx pH Reset time xxx sec.
Page 36 Digox 601 sodium Language language selection Language language selection No. xx Bus address bus address No. xx Water shortage water shortage Alter flow/contact with Averaging average Switch activated/deactivated with 36/110...
Page 37: Basic Settings Code 099
Digox 601 sodium 3.5.4 Basic settings code 099 3.5.4.1 Structure Caution! The adjustment possibilities available under code 99 may only be used by service technicians and trained mem- bers of staff! Alterations of the adjusted parameters are subject to the approval of an authorized technician of Dr.
Page 38 Digox 601 sodium 3.5.4.2 Operating matrix Forward motion calibration 1 xxx sec. Forward motion calibration 2 xxx sec. Waiting time measuring value xxx sec. Measuring water pump xxx % (depending on device) Pump calibration 1 xxx % (depending on device)
Page 39: Commissioning And Decommissioning Of The Digox 601 Sodium
Digox 601 sodium Commissioning and decommissioning of the Digox 601 sodium Commissioning 4.1.1 Short description of commissioning/preconditions for commissioning Below you can find the installation of the sensors and the pump hoses described in the following chapters, the con- nection of the alkalising reagent as well as the initial calibration to be executed, see sections 4.1.2 until 4.1.7.
Page 40 Digox 601 sodium Notice: In order to avoid any device contamination due to leaking operating fluids, please use a highly absorptive, lintfree paper or cloth when carrying out the following work. Before inserting the electrodes, the presence of rubber rings underneath each electrode screw connection is to be checked.
Page 41 Digox 601 sodium Fig. 17 In order to connect the electrode, remove the upper closing cap, put the plug labelled with "Ref" onto the electrode and fasten the union nut of the plug hand-tight (right-hand thread). (Fig. 18) The hose must now be completely filled with reference solution, right to the storage container. Here, reference so- lution may be refilled later.
Page 42 Digox 601 sodium 4.1.3.4 Insertion of the pH electrode The pH electrode is to be equally inserted into the left-hand electrode screw connection (Fig. 20 and Fig. 21) but only after the pH measurement has been calibrated (see chap. 4.1.6). The glass ball of this electrode must not nudge anywhere! The correct position of the electrodes after their installation are shown in Fig.
Page 43: Insertion Of The Pump Hoses
Digox 601 sodium 4.1.4 Insertion of the pump hoses The pump hoses are already connected on delivery; however, they have been removed from the pumps in order to avoid damage due to long standstill periods until the point of time of commissioning. In order to make the pumps operational, open their housing cover.
Page 44: Connection Of The Alkalising Reagent
Digox 601 sodium 4.1.5 Connection of the alkalising reagent For the alkalising reagent, the bottle head has a S40 thread for MERCK bottles. Within the analyser, there is suffi- cient space for one 1l bottle. Screw the adapter onto the bottle and place the bottle to its designated space within the analyser.
Page 45: Calibration Of The Temperature Measurement
In order to calibrate the temperature measurement, the exact sample temperature is to be determined and, if nec- essary, the difference to the displayed value of the Digox 601 sodium is to be inserted under the menu point Basic settings Correction Pt 100.
Page 46: Alkalising Agent
Digox 601 sodium 4.2.4 Alkalising agent Diisopropylamine (DIPA) is used as alkalising agent. If the alkalising agent is used up, the error message "Alka. reag. empty" is shown on the display of the device. The special stopper of the used-up alkalising agent connected to the hoses can be re-used.
Page 47: Maintenance/Regular Check Of The Digox 601 Sodium
Maintenance/regular check of the Digox 601 sodium Maintenance switch/hold function The Digox 601 sodium comprises a hold function of the analogous outlet value for maintenance work or other measurement tasks, in case of which the analogue outlet needs to be blocked. The maintenance function is avail- able under release codes 86 and 99.
Page 48: Laboratory Sample (Option)
Digox 601 sodium Laboratory sample (option) For measuring a laboratory sample, the laboratory sample set (ref. no. 51480030), which is available as accessory, is to be used. The latter consists of a laboratory sample bottle with quick release coupling and a sample hose (Fig.
Page 49: Maintenance Function
Brief description The following maintenance and test works are to be carried out at the Digox 601 sodium within regular intervals. The intervals of the works to be carried out depend on the usage conditions of the analyser. The times indicated in brackets are empirical values which are to be shortened in case of special impact (e.g.
Page 50: Filling Levels Of The Operating Chemicals
For this purpose, the hose must be disassembled from the pump and the overflow container and be replaced by the set "sample inlet filter for Digox 601 sodium" (ref.
Page 51: Etching Stipulations Na Sensors
The intervals depend on the calibration interval adjusted. 5.3.8 Etching stipulations Na sensors Etching kit sodium electrode Digox 601 sodium (ref. no. 11475012, available as accessory): − Reagent A − Reagent B (liquid) The sodium electrode must be etched, if the latter has been stored in a dry place for a longer period of time or if the error message "Na slope factor"...
Page 52: Error Messages And Error Correction
Digox 601 sodium Error messages and error correction Notice: In the following Table 2, possible error messages, their causes and corrective measures are described. If the recommended measures for error correction are unsuccessful, the device support of Dr. Thiedig + Co. is to be informed immediately.
Page 53: Factory Defaults/Parametrisation
Digox 601 sodium Factory defaults/parameterisation General note Caution! In case of a deletion of data, the set parameters are reset to the following factory defaults. Any alterations to the basic settings under the two code levels as well as the execution of the function "Delete Data" are subject to the approval of the device support of Dr.
Page 54: Basic Settings For Code 86
Digox 601 sodium Basic settings for code 86 Correct. Pt 100 correct. Pt100 0°C Calibrated data buffer solution 1 7.0 pH Buffer solution 2 9.0 pH Internal buffer 7,0 pH pH regulator nominal value 11 pH P range 7,00 pH Reset time 200 sec.
Page 55: Basic Settings Code 099
Digox 601 sodium Basic settings code 099 Forward motion calibration 1 600 sec. Forward motion calibration 2 600 sec. Waiting time measuring value 600 sec. Measuring water pump 40.0% Pump calibration 1 5.8% Pump calibration 2 55.0% Pump left-hand motion 003 sec.
Page 56: Spare Parts And Consumable Material
Digox 601 sodium Spare parts and consumable material Caution! Only original spare parts and operating chemicals of Dr. Thiedig + Co. may be used! When third-party spare parts or operating chemicals are used, the warranty claim shall become void. Additionally needed diisopropylamine must be procured locally (bottle thread S40, e.g. Merck 803461000). In the following table, the spare and wear parts as well as the operating chemicals are listed.
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Page 58: Annex
Digox 601 sodium Annex Safety data sheets for operating chemicals Warning! The safety instructions of the safety data sheets for operating chemicals are to be adhered to in any case. The PPE stipulated in those safety instructions must be worn when handling diisopropylamine.
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Page 68: Safety Data Sheet Reference Solution 1,000 Ppb Na
Digox 601 sodium 9.1.2 Safety data sheet Reference solution 1,000 ppb Na 68/110...
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Page 73: Safety Data Sheet Calibration Solution 5,100 Ppb Na
Digox 601 sodium 9.1.3 Safety data sheet Calibration solution 5,100 ppb Na+ 73/110...
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Page 78: Safety Data Sheet Diisopropylamine
Digox 601 sodium 9.1.4 Safety data sheet Diisopropylamine 78/110...
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Page 89: Safety Data Sheet Etching Reagent A
Digox 601 sodium 9.1.5 Safety data sheet Etching reagent A 89/110...
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Page 101: Safety Data Sheet Etching Reagent B (Liquid)
Digox 601 sodium 9.1.6 Safety data sheet Etching reagent B (liquid) 101/110...
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Page 107: Declaration Of Conformity Digox 601 Sodium
Digox 601 sodium Declaration of Conformity Digox 601 sodium 107/110...
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Page 110 Dr. Thiedig + Co KG Prinzenallee 78-79 13357 Berlin Germany Phone +49 (0)30 / 49 77 69-0 Fax +49 (0)30 / 49 77 69-25 Email: info@thiedig.com www.thiedig.com Service hotline: (+49) 30 49 77 69-42...