Secomam STAC User Manual

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USER MANUAL

Ref. 0M8950

Manual version: 2.6

STAC

ON-LINE ANALYZER

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SUMMARY

1 REMARK ........................................................................................................................................................... 5

2 WARRANTY...................................................................................................................................................... 6

3 INFORMATION................................................................................................................................................ 8

4 PRECAUTIONS OF USE ............................................................................................................................... 10

5 INSTALLATION............................................................................................................................................. 12

5.1 ANALYZER INSTALLATION.................................................................................................................. 12

5.2 ANALYZER DESCRIPTION..................................................................................................................... 12

5.2.1 ELECTRONIC CASE ........................................................................................................................... 13

5.2.1.1 Dimensions...................................................................................................................................................... 13

5.2.1.2 Description...................................................................................................................................................... 13

5.2.2 FLOWING CASE ................................................................................................................................. 14

5.2.2.1 Dimensions...................................................................................................................................................... 14

5.2.2.2 Description...................................................................................................................................................... 14

5.2.3 MONOCHROMATOR CASE ............................................................................................................... 15

5.2.3.1 Dimensions...................................................................................................................................................... 15

5.2.3.2 Description...................................................................................................................................................... 15

5.2.4 POWER SUPPLY CASE ...................................................................................................................... 15

5.3 FLUIDS CONNECTION ............................................................................................................................ 16

5.4 SAMPLE INLET......................................................................................................................................... 17

5.4.1 PERISTALTIC PUMP RATE OF FLOW ............................................................................................. 17

5.4.2 SAMPLE CHARACTERISTICS............................................................................................................ 17

5.4.3 TAKING SAMPLE CONSTRAINTS ..................................................................................................... 17

5.4.4 OVERFLOW CAN................................................................................................................................ 18

5.4.5 RINSING SOLUTION .......................................................................................................................... 19

5.4.6 BLANK SOLUTION ............................................................................................................................. 19

5.4.6.1 Some definitions.............................................................................................................................................. 19

5.4.6.2 The blank solution........................................................................................................................................... 20

5.5 ELECTRICAL CONNECTIONS................................................................................................................ 21

5.5.1 GENERAL WIRING ............................................................................................................................. 21

5.5.2 POWER SUPPLY................................................................................................................................. 23

5.5.3 RS232 CONNECTION ......................................................................................................................... 24

5.5.3.1 Connection characteristics............................................................................................................................... 24

5.5.3.2 Data size.......................................................................................................................................................... 24

5.5.3.3 Data transmission rate..................................................................................................................................... 24

5.5.3.4 Connection with a modem............................................................................................................................... 24

5.5.4 CURRENT LOOP CONNECTION....................................................................................................... 25

5.5.4.1 Current loop for blank energy level................................................................................................................. 26

5.5.4.2 Current loop for restitution gap....................................................................................................................... 27

5.5.4.3 Current loops for parameters concentration .................................................................................................... 28

6 START UP AND MEASURE ......................................................................................................................... 30

6.1 MEASURE.................................................................................................................................................. 30

6.1.1 MEASURING SEQUENCE.................................................................................................................. 30

6.1.2 MEASURING ERROR CODES............................................................................................................ 32

6.2 SET-UP....................................................................................................................................................... 33

6.2.1 CHOICE OF LANGUAGE AND DATE............................................................................................... 33

6.2.2 CHOICE OF CHANNELS NUMBER................................................................................................... 34

6.2.3 CHANNEL PROGRAMMING.............................................................................................................. 34

6.2.3.1 Pump working time, cadence, pump overrun.................................................................................................. 35

6.2.3.2 Rinsing channel programming ........................................................................................................................ 36

6.2.3.3 Blank channel programming ........................................................................................................................... 36

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6.2.3.4 Sample channel programming......................................................................................................................... 37

6.2.3.4.1 Selection of water type and parameters number................................................................................... 37

6.2.3.4.2 Selection of measuring parameters....................................................................................................... 38

6.2.3.4.3 Programming of 4-20 mA outputs ....................................................................................................... 38

6.2.3.4.4 Restitution............................................................................................................................................ 39

6.2.3.4.5 Programming of cycles of rinsing, measures and dilution.................................................................... 39

6.2.3.4.6 Dilution................................................................................................................................................ 40

6.3 EXPORT THE 255 LAST RESULTS ......................................................................................................... 41

6.3.1 CHOICE OF THE TYPE OF EXIT LINK (PC or printer)................................................................... 41

6.3.2 EXPORTATION ON P.C...................................................................................................................... 41

6.3.3 EXPORTATION ON PRINTER............................................................................................................ 42

6.4 RECALIBRATION..................................................................................................................................... 43

6.4.1 IMPRESSION OF CALIBRATION COEFFICIENT ............................................................................ 43

6.4.2 MODIFICATION OF CALIBRATION COEFFICIENTS..................................................................... 44

6.4.3 CHOICE BETWEEN NO3 AND NNO3 ............................................................................................... 44

6.4.4 TEST LOOP 4-20 MA .......................................................................................................................... 45

6.4.5 ENTER THE SECRET CODE .............................................................................................................. 46

6.4.6 OUTPUT SELECTION ........................................................................................................................ 46

6.5 PILOTING BY A PC................................................................................................................................... 48

7 START UP PROCEDURE.............................................................................................................................. 50

8 STAND-BY & STORAGE PROCEDURE .................................................................................................... 54

9 MAINTENANCE............................................................................................................................................. 56

9.1 PRECAUTIONS FOR USING.................................................................................................................... 56

9.2 FLOW-THROUGH CUVETTE MAINTENANCE.................................................................................... 56

9.3 DEUTERIUM LAMP CHANGING............................................................................................................ 59

9.4 PERISTALTIC PUMP................................................................................................................................ 61

9.4.1 PERISTALTIC PUMP TUBE CHANGING.......................................................................................... 61

9.4.2 CHANGING PERISTALTIC PUMP WHEEL ...................................................................................... 62

9.5 DISPLAY BACKLIT ADJUSTMENT....................................................................................................... 65

9.6 REPLACEMENT FREQUENCY OF SPARE PARTS............................................................................... 65

10 SPARE PARTS .............................................................................................................................................. 66

APPENDIX: INDICATIVE CHART OF TUBE IN TYGON COMPATIBILITY....................................... 67

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REMARK

The information contained in this document may be the object of patents or patent applications by SECOMAM. The possession of this document does not confer any license to such patents.

The following names are SECOMAM’s registered trademarks throughout the world.

SECOMAM STAC

This manual is updated periodically. The updates are included in the new editions. All information supplied in this edition of the manual may be amended before the products described

herein are available.

All reproduction rights reserved.

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WARRANTY

The new equipment and material sold by SECOMAM is guaranteed against any manufacturing defects for one year (unless otherwise stated by SECOMAM) with effect:

− From the technical acceptance of the equipment in the factory by the buyer or his designee,

− or failing this :

* For Metropolitan France: from the date on the delivery note. * For other destinations: from the date of factory shipment certified by air waybill,

consignment note or bill of lading.

The SECOMAM company guarantee applies exclusively to defectiveness arising from a design fault or from a concealed defect. It is strictly limited to the free dispatching of replacement parts (except for consumable items) or to the repairing of the equipment in our workshops within a deadline of 10 working days (shipping delay not included).

By express agreement, the following are strictly excluded from our guarantee:

− All damages, notably for staff costs, loss of earnings, business trouble, etc.

− Any breakdown due to an incorrect use of the equipment (not adapted mains, fall, attempt at

transformation, etc.) or to a lack of maintenance by the user or to poor storage conditions.

− Any breakdown due to the use of parts not supplied by SECOMAM, on SECOMAM equipment

− Any breakdown due to the transporting of the equipment in packaging which is not its original

packaging

− The lamps, the cells and generally any item which appears in the "accessories" section on the price list.

Our customers are kindly asked to apply for our consent before returning any instrument for repair. No return of materials may be accepted without the prior written consent of our Servicing after Sales Management which will precise the terms of such return. If the above consent is given, articles shall be returned in their original packaging on a prepaid basis to the following address:

SECOMAM - 91 Avenue Des Pins d’Alep – 30100 ALES FRANCE

We reserve the right to reship all instruments received collect failing such consent. Whatever method and conditions of transport are chosen for the shipment of the equipment to be

repaired under guarantee, in the original packaging, the corresponding costs and the insurance costs will be payable by the customer.

Any damage connected to the return transport of the equipment falls within the framework of the guarantee on the express condition that the customer has sent his complaint within forty-eight hours by registered letter with acknowledgement of receipt to the carrier. A copy of the letter should be sent to SECOMAM.

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SOFTWARE GUARANTEE

The software is guaranteed by the designer or the distributor of the software under the conditions specified in the literature accompanying the aforementioned software packages. Under no circumstances whatsoever will SECOMAM supply any type of guarantee for software packages. By express agreement, all damages, notably for staff costs, loss of earnings; business trouble, etc. are strictly excluded from our guarantee. The customer is informed that the software cannot be guaranteed exempt from defects or bugs.

TRADE SECRET AND PROPERTY RIGHTS

This document is protected by a SECOMAM copyright (c) 2003 and the copying rights are explicitly reserved. The software supplied with the equipment or referenced contains trade secrets and confidential information which are SECOMAM's property. It is legally protected by the international copyright (c) laws.

SECOMAM grants a license to use its software to the user. This may not be disclosed, used or duplicated with the intention to save it, without SECOMAM's written permission. The beneficiary must attach a copy of this document to all authorized partial or total reproductions.

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INFORMATION

The SECOMAM equipment has been designed, manufactured, tested and inspected according to the ISO 9001 standards.

SECOMAM equipment is carefully inspected before it is packed. As soon as you receive your equipment, check the condition of the packaging and if you notice any problems, notify your carrier within 48 hours. Then consult the packing list and check that everything is in order. Finally, if you discover that something is missing, or if the goods are damaged immediately DO NOT WAIT. CALL

SECOMAM. If the unit is not immediately installed, it should be stored in a dry and clean area. The storage

temperature should be between 10 and 35°C.

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PRECAUTIONS OF USE

 Always make sure that the instrument is connected on the good voltage.

(Between 100 – 240V 50-60Hz)

 Always disconnect the mains plug before starting any work inside the instrument.  When dangerous substances for health and environment are used, the laboratory or

site rules, where the instrument is installed must be followed.

 Take all the necessary precautions, during the use the instrument, to protect the

operator from eventual liquids leaks or spills or possible radiations (protective gloves, anti-UV radiation glasses , protected clothes, etc)

Keep the sample compartment clean.

 The deuterium lamp used in this unit emits UV radiation.  Install the instrument in a ventilated area because it is likely to generate ozone, which,

beyond the limits below, can harm health.

Exposure average value = 100 ppb Exposure limits value = 200 ppb

 All operations made inside the instrument, must be done by SECOMAM or by

SECOMAM’s authorized technicians.

 Use of the spectrophotometer without danger

If it is necessary to suppose that it is not possible any more to use the spectrophotometer without danger, it is necessary to put it out of service and to protect it from involuntary starting up again.

Use without danger will not be possible when the spectrophotometer

• Has suffered damage during transportation.

• Was stored under inadequate conditions for one relatively long period

• Has some visible damages.

• Does not function any more as described in the user’s manual.

In case of doubt, consult the spectrophotometer supplier.

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INSTALLATION

5.1 ANALYZER INSTALLATION

The STAC has to be installed in:

- dry and clean place,

- away from humidity,

- away from corrosive vapors

- heated during the winter

- ventilated during the summer

- temperature room must be between 15°C and 40°C.

5.2 ANALYZER DESCRIPTION

The standard version of the STAC is made for one sample measurement. It is constituted with four cases installed on a PVC plate:

- Power supply.

- Electronic case.

- Monochromator case

- Flowing case

Fig. 1 Complete size of the analyzer

Height: 600 mm Width : 800 mm Weight : 20 kg

Place needed:

- Around 1 meter between the bottom of the analyzer support and the floor

- 0.3 meter minimum all around the analyzer (at right and left)

- 0.2 meter minimum over the analyzer support

- 1 meter, minimum, in front of the analyzer. If possible, envisage a small shelf (L = 500 mm, P = 400 mm) to support the weight of a printer or a computer and which could be fixed at the wall with 1,30 meter of the ground and on the analyzer side.

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5.2.1 ELECTRONIC CASE

5.2.1.1 Dimensions

Fig. 2 Electronic case

Height: 300 mm Width: 300 mm Depth: 180 mm Weight: 5 kg

5.2.1.2 Description

Fig. 3 External view of the electronic case

The electronic case includes:

- Electronic boards.

- 4 galvanic isolators.

- Display and keyboard.

- Connections with other cases.

- Connections for main, RS232 and 4-20 mA current loops.

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5.2.2 FLOWING CASE

5.2.2.1 Dimensions

Fig. 4 Flowing case

Height: 300 mm Width: 300 mm Depth: 180 mm Weight: 5 kg

5.2.2.2 Description

Fig. 5 External view of the flowing case

The flowing case includes:

- One channel for rinsing solution.

- One channel for blank (distilled or demineralized water).

- From 1 up to 4 programmable channels for samples.

- From 3 up to 6 pinch electro-valves to control the liquids.

- A peristaltic pump.

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- A dilution loop.

5.2.3 MONOCHROMATOR CASE

5.2.3.1 Dimensions

Fig. 6 Monochromator case

Height: 190 mm Width: 280 mm Depth: 180 mm Weight: 5 kg

5.2.3.2 Description

Fig. 7 External view of the monochromator case

The monochromator case includes:

- Monochromator.

- Deuterium lamp.

- Flow cell (2, 5 or 50 mm optical path following the chlorine concentration to measure).

5.2.4 POWER SUPPLY CASE

Height: 55 mm Width: 200 mm Depth: 85 mm

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Weight: 3 kg

5.3 FLUIDS CONNECTION

Fig. 8 Fluids connection drawing

Tube labeled 1 (Flowing case) is connected to the connection labeled 1 (Monochromator case). Tube labeled 2 (Flowing case) is connected to the connection labeled 2 (Monochromator case). Tube labeled “OUT” (Flowing case) is going towards the sewer. Tube coming from electro valve labeled B is going to blank tank Tube coming from electro valve labeled R is going to rinsing solution tank Tube coming from electro valve labeled EV1 is going to sample 1 inlet. Tube coming from electro valve labeled EV2 is going to sample 2 inlet. Tube coming from electro valve labeled EV3 is going to sample 3 inlet. Tube coming from electro valve labeled EV4 is going to sample 4 inlet.

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5.4 SAMPLE INLET

5.4.1 PERISTALTIC PUMP RATE OF FLOW

Around 17 liters per hour Around 95 ml per 20 seconds.

Theoretic volume = 0.019 liter per meter (tube internal diameter: 5 mm). Roughly 4 seconds of aspiration per tube meter.

5.4.2 SAMPLE CHARACTERISTICS

Generally the sample does not need to be prepared before the measuring.

NOTE 1

Nevertheless, in certain conditions, it must be cooled or warmed to avoid the condensation on the measure flow through cuvette. Minimum temperature =15°C Maximum temperature = 40°C

NOTE 2

With the installed tubes, it is advised against passing samples containing concentrated solvents, oils, concentrated acids and concentrated NaOH.

5.4.3 TAKING SAMPLE CONSTRAINTS

The peristaltic pump can bring a sample from a distance of 5 meters maximum and a depth of 2 meters maximum (see drawing under).

Fig. 9 STAC positioning.

If the sample is not accessible near the device, install a constant level flow cuvette.

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Fig. 10 Synoptic of liquid circuit.

N.B.: DO NOT FORGET TO INSTALL A DRAIN GUTTER TO CARRY THE SAMPLES AND DRAIN TO THE SEWER.

TO BE DONE BY THE USER:

The user has to bring the sample close to the analyzer and then install the sample inlet equipped with stopping valve. The user has to install the drain gutter.

5.4.4 OVERFLOW CAN

The silicone tube coming from the electro valve EV1 is connected to the outlet of overflow can.

Fig. 11 Example of overflow can.

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Overflow can includes:

- a cuvette with overflow,

- a stopping valve to isolated the system,

- a purge valve to empty the cuvette,

- a strainer (if necessary) to stop big particles.

5.4.5 RINSING SOLUTION

The rinsing solution can be different according with the solution to analyze. Generally we advise you to use chlorine water at 48° diluted at 1%. Sometimes it is possible to use:

- methanol (1 to 10%)

- diluted organic solvents (acetone, methylen chloride…)

- and so on The consumption of rinsing solution depends on two things:

- the frequency of rinsing;

- the time for rinsing solution aspiration. Example:

- the frequency of rinsing = 2 hours

- the time for rinsing solution aspiration = 40 seconds

Consumption = 16 liters for 1 week

5.4.6 BLANK SOLUTION

5.4.6.1 Some definitions

High purity water: Indicate the water which almost does not contain dissolved substances Distilled water: Indicate the water which is evaporated to be removed of all the dissolved particles

and various pollutants.

Demineralized water: Indicate the water which does not contain any more dissolved mineral ions. Drinking water: Indicate water suitable for human consumption.

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5.4.6.2 The blank solution

The blank solution will have imperatively to be high purity water if the sample contains small quantity of COT and suspended matter (ground water, spring water,…). In the other cases, distilled or demineralized water will be enough.

WARNING:

If the user manufactures the demineralized water in his laboratory, he has to be sure that this water is “clean” (without organic matter and without compounds as nitrate). To check the quality of demineralized water, realize its spectrum against the air. The spectrum shape must be as the following one.

The STAC uses also blank to do the dilution. The consumption of blank solution depends on various things:

- the dilution factor;

- the frequency of blank measure;

- the frequency of sample measure;

- the time of blank aspiration. Example of consumption:

- frequency or blank measure = 2hours;

- frequency of sample measure = 20 minutes with a dilution;

- time of blank aspiration = 40 seconds.

Consumption = 42 liters for a week.

TO BE DONE BY THE USER:

The user has to provide cans with blank solution and rinsing solution.

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5.5 ELECTRICAL CONNECTIONS

5.5.1 GENERAL WIRING

Fig. 12 General connection drawing

Cable diode array monochromator

- From input A (Electronic case) to input A (Monochromator case).

Cable deuterium lamp monochromator

- From input B (Electronic case) to input B (Monochromator case).

Cable feeding peristaltic pump and electro valves

- From input C (Electronic case) to input C (Flowing case).

- From input E (Electronic case) to input E (Flowing case).

Power supply cable

- From power supply case to input D (Electronic case).

RS232 cable

- From RS232 input (Electronic case) to the user.

4-20 mA current loops cable

- From Current loops input (Electronic case) to the user.

External contact cable

- From External contact input (Electronic case) to the user.

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Fig. 13 General wiring drawing

Fig. 14 Connection points of different cases

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Fig. 15 Synoptic of connection points

5.5.2 POWER SUPPLY

If connected to the main through power supply case Mains: 230 V single phases, 50/60 Hz. Power: 300 W

If connected to an external source without power supply case. Characteristic: 12V/10A DC

TO BE DONE BY THE USER:

Install a plug near the analyzer. If possible, install an ON/OFF external switch closed to the analyzer.

If this analyzer must working inside a very strong humidity environment, it is recommended to install it inside an IP54 case.

In case of large fluctuations in AC voltage (Fluctuation above +/- 10% of nominal voltage) it is advised to connect a voltage regulator or an undulator.

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5.5.3 RS232 CONNECTION

The RS232 connection allows the analyzer to communicate with the computer using UV-PRO software.

5.5.3.1 Connection characteristics

N° pin DB9 connector Color Designation Signification

5 Black GND Ground 2 Green TXD STAC-C towards terminal 3 White RXD Terminal towards STAC-C 9 Grey

Carrier Detect MODEM

Signal (CD)

5.5.3.2 Data size

1 START BIT - 8 S BITS - 1 STOP BIT - NO PARITY CR = CR +LF (CARRIAGE RETURN = CARRIAGE RETURN + LINE FEED)

5.5.3.3 Data transmission rate

Bi-directional 9600 Baud.

IMPORTANT: The distance between the STAC and the computer using the output RS 232C must be lower than 5 meters. Otherwise use on line amplifiers.

The standard RS 232C is not compatible with bus mode.

5.5.3.4 Connection with a modem

When a modem is used with the STAC analyzer, it must be compatible with the command A&T type.

- “AT”: To initialize the AT command.

- “ATE1”: To ask the echo of the command.

- “ATQ0”: To require the sending of a report.

- “ATV0”: To require the sending of a short report.

- “AT&K3”: For flux control using RTS and CTS.

- “ATS0=1”: To initialize the connection with the modem and to inform it that it has to take down the telephone line after two ringings.

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5.5.4 CURRENT LOOP CONNECTION

Fig. 16a: Current loops connection 1 to 4

Fig. 17 Loop connection 1 to 8 (4 in option)

Optional 4 extra current loops from 5 to 8

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NOTE: The STAC has in standard 4 current loops outputs. These current loops are active and include galvanic insulators. Optional 4 current loops can be added to equip the STAC with 8 current loops.

20 mA Scale maximum value 4 mA Scale minimum value 0 mA Open loop

On the current loops (from B1up to B4), the user can pick up analogical signals, which are proportional to the measured parameters concentrations. However, the user can dedicate, by programming, one or several current loops outputs for specific use. Example: B1 can be reserved to measure blank energy (Deuterium lamp switched off, flow through cell windows dirty). See current loop programming paragraph. Also, B2 can be reserved to the restitution gap (measurement quality). See current loop programming

paragraph.

For every loop, the user can program:

- the measured parameter type (TOC, TSS, No3 for the standard version of the STAC analyzer),

- water type,

- minimum parameter concentration for 4 mA,

- maximum parameter concentration for 20 mA For the cable connection use, by current loop, an armored cable constituted with 2 wires (section 0.5²

or 0.75²).

IMPORTANT: The distance between the STAC and the supervisor using 4-20 mA signals must be lower than 100 meters. If the distance is higher, use on line amplifiers.

5.5.4.1 Current loop for blank energy level

It is B1 current loop The blank energy level is measured at 204 nm. If the energy level is lower than 300, it necessary to

clean flow-through cuvette windows or to check water used to perform blank. Programming values for the blank level energy are fixed, independent of programming values for

parameter concentration and are as follow: 0 ⇒ 4 mA 1600 ⇒ 20 mA Every value higher to the values given for 20 mA will give 20 mA

Example: Blank energy level = 1650 ⇒ Current loop output = 20 mA.

Calculation example for a blank energy level equal to 300

Minimum 0 = 4 mA Maximum 1600 = 20 mA ⇒ 1600 = 16 mA

Blank energy level = 300 ⇒ (16/1600)*300 + 4 = 3 + 4 = 7 mA

Examples of blank energy value given for a STAC analyzer

- Measure executed on the air with a new deuterium lamp : Blank energy level 1200

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- Measure executed with a 50 mm optical path flow cuvette full of good quality distilled water and a new deuterium lamp : Blank energy level 900

5.5.4.2 Current loop for restitution gap

It is B2 current loop for channel 1 restitution The restitution gap is the difference between the shape of a theoretical sample spectrum (for the

selected water type) and the shape of measured spectrum. More this gap is important, more the measured sample move away of a theoretical sample spectrum.

If the gap is over 4%, the measure is not considered as reliable

This restitution gap is calculated in the same time as parameter concentration and sends by the current loop B2. Programming values for the restitution gap are fixed, independent of programming values for parameter concentration and are as follow: 0% ⇒ 4 mA 16% ⇒ 20 mA Every value higher to the values given for 20 mA will give 20 mA

Example: Restitution gap = 20% ⇒ Current loop output = 20 mA.

Calculation example for a 4% restitution gap

Minimum 0% = 4 mA Maximum 16% = 20 mA ⇒ 16% = 16 mA

Restitution gap = 4% ⇒ (16/16)*4 + 4 = 4 + 4 = 8 mA

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5.5.4.3 Current loops for parameters concentration

Distribution of the current loops following the programming made by the user:

Energy and restitution programming

Use of the current loops following energy and restitution programming

Energy Restitution Current loop

Current loop

NO NO Parameter 1 Parameter 2 Parameter 3 Parameter 4

YES NO Energy Parameter 1 Parameter 2 Parameter 3

NO YES Restitution Parameter 1 Parameter 2 Parameter 3

YES YES Energy Restitution Parameter 1 Parameter 2

Programmed values are the lower parameter concentration for 4 mA and the higher parameter concentration for 20 mA.

All concentration values lower or higher to the programmed values for 4 mA and 20 mA will give 4 mA and 20 mA

Example: TOC calculation If the user chooses 5 mg/l for 4 mA, 2 mg/l measured will give in output 4 mA.

If the user chooses 20 mg/l for 20 mA, 30 mg/l will give 20 mA.

Current calculation example for 10 mg/l of TOC concentration

Minimum 5 mg/l = 4 mA Maximum 20 mg/l = 20 mA

⇒ 15 mg/l = 16 mA Concentration = 10 mg/l ⇒ (16/15)*10 + 4 = 10.66 + 4 = 14.66 mA

Remarks:

•

The value given on output at the end of a measure stay the same between two measures.

•

The output will be equal to 0 mA:

- if the sample is not recognized by the device (accidental pollution, problem in a process, unconformity with the kind of water chosen).

- if there is a saturation during the measure (sample too concentrated, big bubble).

TO BE DONE BY THE USER:

Install an armored 2 wires cable (for every current loop) with 0.5² or 0.75² section

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START UP AND MEASURE

The STAC can analyze one sample type. In its standard version, the STAC analyzer measure TOC, TSS and nitrate. It can export these values by its current loops. The programming of ways is retailed in this chapter. Results are expressed in mg/L.

6.1 MEASURE

6.1.1 MEASURING SEQUENCE

When switch on, STAC sucks the blank solution (channel 0) and then measures it. The screen displays:

Then it sucks the sample solution (channel 1) and measures it.

It calculates the different parameters. The screen displays:

If there are more than one sample channel on, STAC does the measure of all channels.

08/15/00 10 :55 30 STAC SECOMAM

Measuring …0

PARA

08/15/00 10 :55 30 STAC SECOMAM

Measuring… 1

PARA

08/15/00 10 :59 STAC SECOMAM

Calculation ...1

PARA

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Then STAC sucks the rinsing solution (channel 5):

08/15/00 10 :55 30 STAC SECOMAM

Rince… 1

PARA

The screen then displays the results of the sample channel(s).

It gives the first results (in mg/l) for NO3 and COT of the first channel at the bottom of the screen with the time of the measure. 1145 is the time given in seconds before STAC starts a new measure.

On this screen we can see measures done in one hour, with a frequency of 20 min between every measure. 520 is the time in seconds before STAC starts a new measure.

While pushing on the key "+ ", the user will make results appear: the TSS results and also the other sample channels.

08/15/00 11 :04 1145 Hour 1 :NO3 1 :TOC

11 :00 10.5 15.2

+ PARA

08/15/00 12 :11 520 Hour 1 :NO3 1 :TOC 11 :00 10.5 15.3 11 :20 10.3 15.0 11 :40 10.3 15.2 12 :00 10.4 15.3

+ PARA

08/15/00 12 :11 520 Hour 1 :NO3 1 :TOC 11 :00 10.5 15.3 11 :20 10.3 15.0 11 :40 10.3 15.2 12 :00 10.4 15.3

+ PARA

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6.1.2 MEASURING ERROR CODES

Sometimes when the results are displayed on the screen, some errors code appear next to the parameters values. Below, is given an example of different error codes.

List of main error codes: For example, we measure 45.2 (mg/l) for a parameter.

Pb_L

Deuterium lamp does not switch on.

C 45.2

The sample spectrum absorbance of the first wavelength (204 nm) is over 2 Abs (saturated value).

S 45.2

The sample spectrum absorbances of the two first wavelengths (204 and 216 nm) are over 2 Abs (saturated value).

−−−

The sample spectrum absorbance of the minimum three first wavelengths (204, 216 and 228 nm) are over 2 Abs (saturated value).

When the screen always displays “

−−−

” whatever the used dilution factor, it means that the

absorbance of no diluted sample spectrum absorbance for the three last wavelengths (294, 308 and 321 nm) are always over 2 Abs.

R 45.2

The restitution (difference between the theoretical sample spectrum and the read sample spectrum) is included between 2 and 4%.

W 45.2

The restitution (difference between the theoretical sample spectrum and the read sample spectrum) is superior to 4%. Pay attention to the concentrations of measured parameters.

08/15/00 12 :11 510 Hour 2 :NO3 2 :TOC 11 :00 21.5 W 10.2 11 :20 --- 8.2 11 :40 19.0 7.4 12 :00 S 19.5 9.6

+ PARA

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STAC

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6.2 SET-UP

When the screen displays:

- Push on the" PARA» key

The submenu is highlighted (here it is the submenu “Language, date” where we can change language and date).

- Press on "NEX" key to accede to the other submenus.

- Press on "MODI" key to enter in the submenu.

- Press on "END" key to leave this menu.

6.2.1 CHOICE OF LANGUAGE AND DATE

From that screen:

- Select "MODI" to enter in the program. The screen displays:

- Change the language work by using "+" and " - ".

- Change the following parameters while pressing on "NEX" key.

- Modify the day, the month, the hour and minutes in the same way as the work language.

- Press on "RET" key to change menu.

08/15/00 12 :11 510 Hour 1 :NO3 1 :TOC 11 :00 10.5 15.3 11 :20 10.3 15.0 11 :40 10.3 15.2 12 :00 10.4 15.3

+ PARA

08/15/00 10 :55 30 STAC SECOMAM

Rinse…

PARA

Language, date

Nr of channels Channels programming. Results Recalibration Rinse

NEX MODI ->PC END

Language, date

Nr of channels Channels programming. Results Recalibration Rinse

NEX MODI ->PC END

Language : English

Day : 15 Month : 02 Year : 97 Hour : 11 Minute : 52

- + NEX RET

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STAC

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6.2.2 CHOICE OF CHANNELS NUMBER

From this screen:

- Press on "NEX" key to select «Number of channel».

- Press on "MODI" key to enter in the menu. The number of channel is equal to n + 2 (In the STAC analyzer n = 1). There are always two channels

reserved for the blank (Blk) and the rinsing solution (Rin). Channel number 1 is for sample.

The user has to verify or to enter 1 for the “Number of channel”

The screen displays:

- Select 1 with using "+" and "-" keys.

- Validate with "VAL" key.

6.2.3 CHANNEL PROGRAMMING

From this screen:

- Press on "NEX" key to select « Channels programming ».

- Press on "MODI" key to enter in the menu. The screen display:

- Choose the channel to program while doing "+” and "MODI".

Language, date,

Nr of channels

Channels programming Results Recalibration Rinse

NEX MODI ->PC END

Nr of channel : 1

- + VAL

Language, date, Nr of channels

Channels programming

Results Recalibration Rinse

NEX MODI ->PC END

Channel number : 1

+ MODI END

Page 35

STAC

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6.2.3.1 Pump working time, cadence, pump overrun

The parameters of the pump working time and the frequencies are the following: Cadence (rinsing, blank, sample) = 2min - 4h

Pump working time = 5-240s The user should be aware of the pump limited lifetime.

We advise to program measurement cycles so that the pump is not working at least 50% of the time. The pump working time depends on the parameters set for dilutions and the number of channels.

Example n°1 of a measuring sequence: STAC: 1 one channel, no dilution Pump working time Dilution Cadence Blank 40s 30min Sample 30s Non 10min Rinsing 50s 10min (Not a parameter, same as the sample cadence)

In 30 minutes: 1 blank measure + 3 sample measures + 5 rinsing Pump working time in 30 minutes = 40s + 3 x 30s + 3 x 50s = 280s % pump working = 280s / 30min = 16% (OK < 50%)

Example n°2 of a measuring sequence: STAC : 2 channels, dilution 1/6e on the 2nd channel Pump working time Dilution Cadence Blank 40s 60min Sample 1 30s Non 10min Sample 2 35s 1/6 10min Rinsing 50s 10min (Not a parameter, same as the sample cadence)

In 60 minutes: 1 blank measure + 6 measures of sample 1 + 6 measures of sample 2 with dilution + 6 rinsing Pump working time in 60 minutes = 40s + 6 x 30s + 6 x (35s+ 22s + (35s-22s))* + 6 x 50s = 940s % pump working = 940s / 60min = 26% (OK < 50%)

* For more information, refer to chapter: Dilution.

Blank Sample 1 Rinsing

Pump

ing

Pumping

Time

[s]

Measure

Pumping

dilution

V0 + V2

Pumping

Blank

Sample 1 Sample 2 Rinsing

Time

[s]

Measure

diluted V2

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6.2.3.2 Rinsing channel programming

When the user chooses the channel R (Rin), the software will bring back it to the following screen:

« beg.0/end.1 cycl » indicates whether the rinsing is run before or after the measure cycle. If the parameter is set to 0, the measure cycle is rinsing + blank + measure. If the parameter is set to 1, the measure cycle is blank + measure + rinsing. It is important to notice that there is no cadence parameter to set for rinsing. The time between two rinsing cycles is the same than the time between two measure cycles. When STAC runs a measure, it automatically runs a rinsing cycle too. Careful: this is only available from version v51.0 & v61.0.

« Time aspi » is the pump working time. It can be programmed between 5 and 240 seconds by steps of 5 seconds.

- Press on "NEX" key to go from one parameter to another.

- Change parameters value with using "+" and "-" keys.

6.2.3.3 Blank channel programming

When the user chooses the channel B (Blk), the software will bring back it to the following screen:

“Cadence” is the time between two blank measurement cycles. It can be programmed between 2 minutes and 4 hours by step of 2 minutes. “Time aspi” is the peristaltic pump working time. It can be programmed between 5 and 240 seconds by steps of 5 seconds.

Energy parameter inform on the cleanliness of blank solution and windows of flow-through cuvette.

- Press on "NEX" key to select « Energy ».

- Press on "MODI" key to enter in the menu.

Channel number : Rin

beg.0/end.1 cycl : 1

Time aspi (s) 120

- + NEX RET

Channel number : blk

Cadence (mins) : 10

Time aspi (s) 120 Energy

- + NEX RET

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- Press “YES” key to allocate B1 current loop to this parameter. The blank energy level at 204 nm will be sent by the 4-20 mA current loop B1. For more

explanations, see paragraph 6.7.6.1 “Current loop for blank energy level” page 30.

6.2.3.4 Sample channel programming

- Select the channel to program. It is same programming for all channels

6.2.3.4.1 Selection of water type and parameters number

From the following screen:

- Press Select "MODI” key. The screen displays:

- Choose with "+" key kind of water for the programmed channel. In this example the different kinds of waters are:

- Entrance of urban water treatment plant:" Infl",

- Exit of biological water treatment plant: "Outb",

- Exit of physic-chemical water treatment plant: "Outp".

- Natural waters "Nwat".

- Press “NEX” to change the number of parameters measured by channel (for example 3 parameters). In its standard version the STAC analyzer measures 3 parameters. These parameters are: TOC, TSS, and No3.

- Press “+” or “-“ keys to choose the number of parameters.

- Press “RET” to return to the previous screen.

Channel number : blk

Energy : YES

B1 : ( 0 to 1600 )

YES NO RET

Channel number : 1 Water type, Nr paras Parameters Out put 4-20 mA Restitution Aspiration, Rinse

NEX MODI RET

Channel number : 1 Water type : Outb Nr paras : 3

- + NEX RET

Page 38

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6.2.3.4.2 Selection of measuring parameters

From the following screen:

- Press "NEX" and "MODI" keys to choose "Parameters". The screen displays:

- Press “+” or “-“ keys to choose parameters among different measurable parameters.

- Press “NEX” to validate the first parameter and to pass to the next one.

6.2.3.4.3 Programming of 4-20 mA outputs

Every output is associated to a current loop that delivers a 4-20 mA signal proportional to the concentration (mg/l) of the measured parameters. From this screen:

- Press “MODI” key The screen displays:

First column corresponds to the current loop number (B2, B3, B4). Second column corresponds to the measured parameter name (NO3, TSS, TOC). Third column corresponds to the parameter value in mg/l for 4 mA. Fourth column corresponds to the parameter value in mg/l for 20 mA.

- Press “+” or “-“ keys to change the value.

- Press “NEX” to pass from one column to another.

- Press “RET” to escape.

For more explanations, see paragraph Connecting current loops.

Channel number : 1 Water type, Nr paras

Parameters

Out put 4-20 mA Restitution Aspiration, Rinse

NEX MODI RET

Channel number : 1 Parameter 1 : NO3 Parameter 2 : TSS Parameter 3 : TOC

- + NEX RET

Channel number : 1 Water type, Nr paras Parameters

Output 4-20 mA

Restitution Aspiration, Rinse

NEX MODI RET

Channel number : 1 B2 NO3 10 50 B3 TSS 0 50 B4 TOC 0 20

- + NEX RET

Page 39

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6.2.3.4.4 Restitution

Restitution parameter inform on the measurement quality. From this screen:

- Press “MODI” key The screen displays:

- Press “YES” key. The restitution gap for channel one will be sent by the 4-20 mA current loop B2. For more

explanations, see paragraph Current loop connections.

6.2.3.4.5 Programming of cycles of rinsing, measures and dilution

From that screen:

- Press “MODI” key to choose “Aspiration, Rinse". The screen displays:

“Cadence” is the time between two sample measurement cycles. It can be programmed between 2 minutes and 4 hours by step of 2 minutes. “Time aspi” is the peristaltic pump working time. It can be programmed between 5 and 240 seconds by steps of 5 seconds.

Channel number : 1 Water type, Nr paras Parameters Output 4-20 mA

Restitution

Aspiration, Rinse

NEX MODI RET

Channel number : 1

Restitution : YES

B2 : ( 0% to 16% )

YES NO RET

Channel number : 1 Water type, Nr paras Parameters Output 4-20 mA Restitution

Aspiration, Rinse

NEX MODI RET

Channel number : 1 Cadence (mins) : 10 Time aspi (s) : 120 Dilution (1/X) : 1

- + NEX RET

Page 40

STAC

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6.2.3.4.6 Dilution

When do we need to program a dilution factor? If the sample spectrum is over two of absorbance on the three first wavelengths of this spectrum, the analyzer will display some dashes on the screen and it will be necessary to make a dilution of the sample, then to enter a dilution factor.

Values of the dilution factors: The dilution factor goes from 1 to 10.

Dilution factor = 1/1 ⇨ No dilution.

Dilution factor = 10/1 ⇨ 1 sample volume for 9 distilled water volume.

The programming dilution factor permits an approximate dilution but the analyzer will calculate with precision, for every measurement, the exact dilution factor. It will proceed as following:

Measure sequence of a diluted sample:

• STAC measures raw sample (from 204 nm up to 321 nm).

• It reads the first three no saturated absorbances of the raw sample spectrum. (ex: from

251 nm).

• It makes the dilution of the sample following the programming dilution factor.

• It reads the absorbances of the diluted sample spectrum at the same three wavelengths.

• It calculates and does average of three ratio

Absorbance of no diluted sample spectrum

--------------------------------------------------------------Absorbance of diluted sample spectrum

This calculation gives the exact dilution factor which will apply for calculation of parameters concentration.

How is the sample diluted? To get a dilution with a dilution factor of 10, the STAC will aspirate the sample during 1 unit of time, and distilled water during 9 units of time. The mixture is going to occur in the dilution loop and the diluted sample is pushed until the flow through cuvette by an undiluted sample.

Pump working time with dilution:

• STAC measures raw sample with a given pump working time

• It makes the dilution of the sample following the programming dilution factor. Below are

the pump working times for different factors of dilution: Dilution factor 1/XX 2 3 4 5 6 7 8 9 10 Pump working time (s) 20 20 20 20 22 26 26 27 29

• The diluted sample is pushed until the flow through cuvette by an undiluted sample. The pump working time for that operation is equal to the difference between given pump working time and pump working time during dilution.

Page 41

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6.3 EXPORT THE 255 LAST RESULTS

Results are expressed in mg/l. For the nitrate, verify if the results are expressed in NO3 or in NNO

The STAC can memorize 255 results and the result number 256 will be deleted the first one.

6.3.1 CHOICE OF THE TYPE OF EXIT LINK (PC or printer)

From this screen:

- Press “MODI” to choose" select output ".

The screen displays:

- Press "PRIN" key to print the results.

- Press "PC" key to export results under the PC.

- Press "RET" to validate and to return to the previous menu.

6.3.2 EXPORTATION ON P.C.

Connect the STAC to the PC. To have a comfortable manipulation of results acquired on STAC, here is the description of stages to undertake data in a file text, (this one being exploitable under a word processor or a spreadsheet).

PC configuration under Windows XP

• Click on «

START

», «

PROGRAM

», «

ACCESSORY

», «

COMMUNICATIONS

», and «HYPERTERM».

• Windows open a first window called «

New connection Hyper terminal

» and a second window called

DESCRIPTION OF A CONNECTION

».

• Choose the name and icon of this connection (bearing in mind the type of instrument which is your source of data) then « OK ».

• You’ll see «

DESCRIPTION

» disappear to leave space to a new window called « Connection ». In the last windows “Connection by using” selects the COM number where the connecting cable is plugged. Validate « OK ».

• When «

PROPERTY

COMx » shows up, and you should feed the following information :

Print. Calib. Coefs Modification calibr.. Choice NO3 or NNO3 Test loop 4-20 Secret code

Select. Output

NEX MODI END

08/15/00 15 :52 STAC SECOMAM

DATA...PC

PRIN PC JBUS RET

Page 42

STAC

- 42 -

Bits / second: 9600 Data bit: 8 Parity: none Stop bit: 1 Flux control: none

Then validate « OK ».

• Select «

FILES

», «

PROPERTY

», index «

PARAMETERS

».

• Click on « ASCII Configuration ». Check that option «

ADD LINE MODIFICATION AT THE END OF ENTERING

LINES

» is activated. Click on “OK” twice.

• To save the parameters, select «

FILES

» then «

SAVE

». Windows register selected parameters

under predefined name.

• To receive result file from the instrument, click on «

TRANSFER

» then «

CAPTURE TEXT

» menu.

• Windows opens a dialog box «

CAPTURE TEXT

». Choose in which repertory you will save the data

result file also under which name, either by entering the pathway or the name with « .

TXT

» extension,

or by selecting «

» icon.

• Type «Start» and your terminal will be on reception mode.

From this screen:

- Press “NEX” key to choose" Results ".

- Press “MODI” key to send the last 255 results.

6.3.3 EXPORTATION ON PRINTER

- Connect printer to the STAC

- From this screen:

- Press “NEX” key to choose" Results ".

- Press “MODI” key to send the last 100 results.

Language, date

Nr of channels Channels programming. Results Recalibration Rinse

NEX MODI ->PC END

Language, date

Nr of channels Channels programming. Results Recalibration Rinse

NEX MODI ->PC END

Page 43

STAC

- 43 -

6.4 RECALIBRATION

From this screen

Press “MODI” key to choose "Recalibration “.

The menu "Recalibration» allows:

• the printing of calibration coefficients,

• the modification of calibration coefficients,

• to express nitrate results in NO3 or NNO3,

• to test 4-20 mA current loops,

• to enter a secret code,

• to select under what kind of peripheral (printer or PC) results will be exported.

6.4.1 IMPRESSION OF CALIBRATION COEFFICIENT

From that screen:

- Press “MODI” to choose "Print Calibr. coefs.". It will print the calibration coefficients like this example:

Coefs TSS TOC NO3 Infl

1.00 1.00 1.00

Outp

1.00 1.00 1.00

Outb

1.00 1.00 1.00

Nwat

1.00 1.35 1.00

In this example, results of the COT for natural water are multiplied by 1,35.

Language, Date, Nr of channels Channels programming Results

Recalibration

Rinse

SUIV MODI ->PC END

−

Print Calibr. coefs

− Modification Calibr.

− Choice NO3 or NNO3

− Test Loop 4-20

− Secret code

− Select. Output

NEX MODI END

Print Calibr. coefs

Modification Calibr. Choice NO3 or NNO3 Test Loop 4-20 Secret code Select. Output

NEX MODI END

Page 44

STAC

- 44 -

6.4.2 MODIFICATION OF CALIBRATION COEFFICIENTS

When the user notes a constant gap on a parameter in relation to measures done with the normalized methods, it is possible to correct this parameter while introducing a correction coefficient.

It can be done on each of parameters (TSS, TOC, NO3) and for each water type .

-Press "MODI" keys to choose "Modification calibr ". The screen displays:

- Press " + / - " keys to increase or to decrease the coefficient in over brightness by step of 0.05 (in this example TSS).

- Press “NEX” key to pass to the next calibration coefficient.

NOTE:

In this subroutine, “NEX” key permits to modify calibration coefficients for all parameters and for the 4 water types

- Press “RET” to save the coefficient and to escape out of this menu.

6.4.3 CHOICE BETWEEN NO3 AND NNO3

It is possible to have the result expressed in NO3 or in NNO3. From this screen:

- Press “MODI” to choose "choice NO3 or NNO3”. The screen displays:

− Print Calibr. coefs

−

Modification Calibr

− Choice NO3 or NNO3

− Test Loop 4-20

− Secret code

− Select. Output

NEX MODI END

Print Calibr. coefs Modification Calibr.

Choice NO3 or NNO3

Test Loop 4-20 Secret code Select. Output

NEX MODI END

Page 45

STAC

- 45 -

Press “NO3" key to express the results of the nitrate in NO3. Press "NNO3" key to express the results of the nitrate in NNO3. Press "RET" key to validate and to return to the previous menu.

6.4.4 TEST LOOP 4-20 MA

From this screen:

- Press “MODI” to choose» test loop 4-20 ". The screen displays:

- Disconnect current loops from the use.

- Connect a 100 Ohms resistor on each 4-20 mA output

- Connect a voltmeter on the resistor of the B1 current loop.

- Select with “+” or “-“ keys the corresponding current loop.

- Press “NEX”.

- Press "+” or “-" keys to modify the value between 0 and 255.

Step Voltage 4-20 mA

08/15/00 15 :52 STAC SECOMAM

NO3 Res. in NO3

NO3 NNO3 RET

− Print Calibr. Coefs.

− Modification coefs.

− Choice NO3 or NNO3

−

Test loop 4-20

− Secret code

− Select. Output

NEX MODI

END

Loop number : 1

Value (0-255) : 0

- + NEX RET

Page 46

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- 46 -

(V)

Output (mA)

0 0 0

51 0,40 4 127 1,0 10 255 2,0 20

- Press "NEX" key to select the following current loop.

- Press "RET" key to validate and to return to the previous menu.

6.4.5 ENTER THE SECRET CODE

The secret code is used when user download water types models from the UV-PRO software. User has to enter, in this software, the STAC secret code to be authorized to download new water types models.

- Press “MODI” to choose “Secret code”.

At the beginning the secret code is 000.

- Press “+” keys to enter the new code (example: 123).

- Press “RET” to validate the secret code and to come back to the previous menu. When the user comes later in this secret code menu, it has to enter the previous secret code in order

to change it. From this screen the user can enter a new code with “+” keys and validate it with “RET” key.

NOTE: If the secret code is lost, please call SECOMAM.

6.4.6 OUTPUT SELECTION

This submenu allows to select which mode will be used to export the results. From this screen:

Print Calibr. Coefs. Modification coefs. Choice NO3 or NNO3 Test loop 4-20

Secret code

Select. Output

NEX MODI END

08/15/00 13:07 STAC

Old code: 000

0 0 0

+ + + RET

08/15/00 13:07 STAC

New code: 123

1 2 3

+ + + RET

Page 47

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- 47 -

- Press “MODI” to choose “Select. Output”. It displays:

- Press “PRIN” or “PC” keys in accordance with the results exportation mode.

- Press “RET” key to validate the choice and to return to the previous menu.

NOTE: “JBUS” is not available

Print Calibr. Coefs. Modification coefs. Choice NO3 or NNO3 Test loop 4-20 Secret code

Select. Output

NEX MODI END

08/15/00 13:07 STAC SECOMAM

Data  PC

PRIN PC JBUS RET

Page 48

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- 48 -

6.5 PILOTING BY A PC

It is possible to pilot STAC from a distance by a PC with UV-PRO software. For it, make sure that STAC is correctly configured.

From the main menu:

- Press “->PC” to pass the STAC under the PC control. The screen displays:

On the second line there are the analyzer serial number and the EPROM version To stop communication between analyzer and PC computer, switch OFF and ON the STAC or click on “STOP” button in the index “Commands” of “Servicing menu” of the UV-PRO software.

Language, date

Nr of channels Channels programming. Results Recalibration Rinse

NEX MODI ->PC END

08/15/00 15 :52 N : 139 (31.1NV)

Liaison <-> PC

Page 49

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- 49 -

Page 50

STAC

- 50 -

START UP PROCEDURE

Install electronic case, monochromator case and flowing case.

Make the electrical connections between the different cases

Connect the power supply case to the electronical case.

Make the tubes connections between monochromator case and flowing case.

Connect the sample tube to the sample inlet.

Open the front door of the flowing case.

Install carefully the tubes in the electro-valve by pushing the black mobile part in the electro-valve

head as shown in the drawing under.

Fig. 18 How to install silicon tube in the electro-valve head

Page 51

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- 51 -

Fig. 19 Tubes setting

Connect the main power.

Put the rising and blank solutions tubes into 50 liters can.

The blank should be good quality distilled or demineralized water and the rinsing solution is tape water with hypo chlorine.

10/

Switch on the STAC.

The following sequence start

Page 52

STAC

- 52 -

Fig. 19 Starting sequence of one measurement channel

11/

STAC checking

During all this sequence, check:

- There is no bubble coming from the tubing connections (otherwise reconnect it carefully).

- The closed valves are watertight (if not, adjust tubes again carefully in the valves head. Sometimes valve need to work several times with liquid inside tube to be 100% efficient).

STAC starting up

Aspiration of the rinsing solution

Aspiration of the blank solution

STAC zeroing

Aspiration of the sample

Measure of the sample

Dilution? YES or NO

STAC makes the dilution

Measure of the diluted sample

Calculation and displaying of the parameters

Count down for the next measure

Rinsing and blank sequence? YES or NO

YES

Page 53

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- 53 -

- The fluids are moving at approximately 6.5 seconds per meter (if not, check there is no obstruction in the fluid circuit or air coming).

- If the STAC is connected to a computer through UV-PRO software, check if the sample spectra are smooth without any negative absorbance.

12/

Adjust the operational parameters

Referring to the chapter 7 SET OUT AND MEASURE page 33, adjust the STAC parameters such as

- Rinsing and blanking frequency from one per two hours for low polluted water, more if it is non treated water.

- Rinsing and blanking volumes (depending of the tubing length).

- Sample parameters (number, frequency, parameters, calibration, volume aspirated,…)

- Current loop.

13/

Let running the instrument for one hour

Check the stability of the results and the restitution quality (see error messages).

14/

Check the results

The results should change smoothly (if not come back to the installation). The restitution should be OK, if not:

- Check the calibration model with the signature.

- Readjust the calibration using UV-PRO software and collecting at least 30 representative samples

Page 54

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- 54 -

STAND-BY & STORAGE PROCEDURE

1/ Install all tubes, except blank tube, in the rinsing liquid can.

2/ Start a measurement sequence during 5 minutes.

3/ Install all the tubes in the distilled water can.

4/ Start a measurement sequence during 5 minutes.

5/ Stop the instrument.

6/ Disconnect it from the power supplies.

7/ Remove all the silicon tubes out of the electro-valves

8/ Remove the silicon tube out of the peristaltic pump head. NOTE: STAC not used during a long time

- Empty completely the tube and flow-through cuvette.

- Clean and dry the flow-through cuvette.

- Installed the equipment in dry and clean place.

- Set the storage temperature between 10 and 35°C

Page 55

STAC

- 55 -

Page 56

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- 56 -

MAINTENANCE

9.1 PRECAUTIONS FOR USING

Air bubbles must be avoided in tubes and especially in flow-through cuvette during the sample measuring. Tubes must be regularly changed when they become dirty or opaque.

Recommended frequency of tube change (especially those of the electro-valves): 3 MONTHS Following the aspect of the tubes, the operator can shorten or lengthen this frequency.

9.2 FLOW-THROUGH CUVETTE MAINTENANCE

Our flow-through cuvette contains two quartz windows. When these quartz windows are dirty (blank energy at 204 nm lower than 300) it is advisable to clean or to change them. See drawing under.

Fig. 20 How to open the monochromator case

- Switch off the STAC.

- Open the Monochromator case.

Page 57

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- 57 -

Fig. 21 Inside of the monochromator case

Fig. 22 How to remove the flowthrough cuvette

Page 58

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- 58 -

Fig. 23 How to disconnect tube of the flowthrough cuvette.

- Remove the inlet and outlet tube.

- Remove fastening nuts.

- Slide out flow-through cuvette subset.

Fig. 24 Flow-through cuvette assembly

QUARTZ WINDOW REF: 0M6991 LOCKING RING REF: 0M6992 KEY FOR LOCKING RING REF: 0M6998 BLACK JOINT REF: 0M7496

- Unscrew the locking ring.

- Change the quartz windows (every 6 months) or thoroughly clean them with a soft tissue moisten with a hydro-alcoholic solution.

Page 59

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- 59 -

9.3 DEUTERIUM LAMP CHANGING

Fig. 25 How to open the monochromator case

- Switch off the STAC.

- Open the Monochromator case.

Fig. 26 Inside of the monochromator case

Page 60

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- 60 -

Fig. 27 How to remove deuterium lamp

DEUTERIUM LAMP REF: 80MI0146

- Disconnect deuterium lamp connector.

- Unscrew the fastening nuts for the lamp

- Unscrew the fastening nuts for the cell

- Take away the cell

- Take away the deuterium lamp.

- Replace by a new lamp (be careful to the centering studs).

- Screw the fastening nuts for the lamp

- Put back the cell

- Screw the fastening nuts for the cell

- Plug deuterium lamp connector.

- Switch on the device.

NOTE: It is not necessary to adjust the deuterium lamp position because it is pre-aligned in the factory

CAUTION:

- Make sure that the lamp is cold before withdrawing it (Risks of burns).

- During the lamp reassembly, not to put the fingers on the quartz envelope because this would deteriorate its good performance. Otherwise, clean quartz envelope with alcohol and a soft tissue.

Fastening bolt

for cell

Fastening nuts for lamp

Page 61

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- 61 -

9.4 PERISTALTIC PUMP

9.4.1 PERISTALTIC PUMP TUBE CHANGING

WARNING: For proper operation, this subset must be change every three months.

Fig. 28 Peristaltic pump head

PERISTALTIC PUMP SUBSET REF: 0M8951

- Switch off the device.

- Remove the external tubes connected to the peristaltic pump subset

- Turn round the clip for peristaltic pump subset as is shown by A arrows.

- Remove the tube cover as is shown by B arrows.

- Remove the peristaltic pump subset.

- Re install a new one.

- Re-install the tube cover.

- Block the peristaltic pump subset and the tube cover with the clip.

- Re connect the external tubes

- Switch on the device

- Check the liquid aspiration.

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9.4.2 CHANGING PERISTALTIC PUMP WHEEL

IMPORTANT: The life of this subset, given by the manufacturer, is 1500 hours. It is therefore advisable to replace the wheel of peristaltic pump as a function of using time of the peristaltic pump, estimated following programming entered the user

- Switch off the device.

- Remove the external tubes connected to the peristaltic pump subset

- Turn round the clip for peristaltic pump subset.

- Remove the tube cover.

- Remove the peristaltic pump subset.

- Remove the peristaltic pump block

Fig. 29 Removing of peristaltic pump block

Fig. 30 Peristaltic pump wheel

Peristaltic pump wheel

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Fig. 29 How to remove the peristaltic pump head

- Remove screws and washers shown above.

Fig. 30 Peristaltic pump head disassembling

- Slide up the peristaltic pump head.

Screws + washers

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Fig. 31 After peristaltic pump removing

Fig. 32 Peristaltic pump wheel removing

- Remove outside the peristaltic pump wheel.

- Change the peristaltic pump wheel.

PUMP PERISTALTIC WHEEL REF: 0M8612

- Proceed as reverse way to reassemble this subset.

Peristaltic pump wheel

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9.5 DISPLAY BACKLIT ADJUSTMENT

Open the electronic case.

Fig. 33 How to adjust the backlit

- Adjust the display backlit, through the hole, with a small cross-shaped screwdriver.

9.6 REPLACEMENT FREQUENCY OF SPARE PARTS

DESIGNATION REFERENCE FREQUENCY

Peristaltic pump wheel 0M8612 1500 hours Silicon tube 6x9 0M6832 3 months Subset of peristaltic pump head 0M8951 3 months Silicon tube 5x8 (peristaltic pump connection) 0M8275 3 months Quartz windows for flowthrough cuvette. 0M6991 6 months Black Joint (diameter : 14 mm) 0M7496 6 months Deuterium lamp 80MI0146 1 year

The frequency of change of the spare parts, indicated in the table above, is not a peremptory necessity. The user can adapt it according to the degree of wear of these parts or the frequency of use of the analyzer.

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SPARE PARTS

Designation Ref SECOMAM

Electronic case 40MP111 Monochromator case 40MP222 Flowing case 40MP333 12 V cutting power supply case 0M8937 Flow through cell module with 50 mm optical path 70MP0537 Flow through cell module with 5 mm optical path 70MP0538 Flow through cell module with 2 mm optical path 70MP0539 Separation wall coupler 0M7492 Nozzle joint 0M7493 T shape link 0M6760 Silicon tube 6x9 (Reference for 1 meter). 0M6832 Silicon tube 5x8 (peristaltic pump connection) 0M8275 Fastener 0M1898 Right angle link 0M6900 Subset of peristaltic pump head 0M8951 Peristaltic pump wheel 0M8612 Quartz window for flow-through cuvette 0M6991 Locking ring for flow-through cuvette 0M6992 Plate black joint (diameter 14 mm) 0M7496 Locking key for flow-through cuvette 0M6998 Dilution loop 0M7002 Deuterium lamp 80MI0146 RS232C cable (9F pins/9F pins) 0Z/93-90307 Connection cable (9M pins/USB) 0M8142 Cable for power supply case (EU) 0M0254 Cable for power supply case (US) 0M4034

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APPENDIX: INDICATIVE CHART OF TUBE IN TYGON COMPATIBILITY

A: very good compatibility B: Good compatibility C: Almost good compatibility D: Bad compatibility.

- : unknown Compatibility.

Fluid compatibility Acetaldehyde D Acetic acid<5% A Acetic acid>5% B Acetic anhydride D Acetone D Acetonitrile D Acetyl bromide D Acetyl chloride D Aliphatic hydrocarbons C Aluminum chloride A Aluminum sulfate A Alums A Ammonia B Ammonium acetate A Ammonium carbonate A Ammonium chloride A Ammonium hydroxide B Ammonium nitrate A Ammonium phosphate A Ammonium sulfate A Amyl acetate D Amyl alcohol B Amyl chloride B Aniline D Aniline hydrochloride D Aromatic hydrocarbons D Arsenic salts A Barium salts A Benzaldéhyde D Benzenesulfonic acid B Boric acid A Bromine A Butane B Butanol B Butyl acetate D Butyric acid D Calcium oxide A Carbon bisulfide D Carbon tétrachloride D Chlorine, wet B Chloroacetic acid D Chlorobenzene D Chlorobromomethane D Chloroform D Chlorosulfonic acid B

Chromic acid A Chromic acid 30% A Chromium salts A Copper salts A Cyclohexanone D Diacetone alcohol D Dimethyl formamide D Fluid compatibility Ethanol B Ether D Ethyl acetate D Ethyl bromide D Ethyl chloride D Ethylamine D Ethylene chlorohydrin D Ethylene dichloride D Ethylene glycol B Ethylene oxide B Ferric chloride A Ferric sulfate A Ferrous chloride A Ferrous sulafte A Fluoboric acid A Fluoroborate salts A Fluosilicic acid A Formaldehyde B Formic acid B Freon TMS D Gasoline, high aromatic D Gasoline, nonaromatic D Glycerin A Hydriodic acid A Hydrobromic acid A Hydrochloric acid A Hydrocyanic acid A Hydrofluoric acid, 50% C Hydrofluoric acid, 75% D Hydrogen peroxide (dil) A Hydrogen peroxide, 90%

Hypochlorous acid A Iodine solution A Kerosene D Ketones D Lactic acid A Lead acetate B

Lithium hydroxide A Magnesium chloride A Magnesium sulfate A Malic acid A Manganese salts A Mercury salts A Methane A Methanol C Methyl chloride D Methyl ethyl ketone D Mixed acid (40%H2SO4, 15% HNO3)

Monoethanolamine Naphta B Fluid compatibility Nickel salts A Nitric acid (dil) A Nitric acid (med) A Nitric acid (con) B Nitrobenzene D Nitrogen oxides A Nitrous acid A Oils, animal D Oils, mineral D Oleic acid D Oxalic acid A Perchloric acid D Perchloroethylene D Phenol B Phosphoric acid, 50% A Phtalic acid A Plating solution A Polyglycol A Potassium carbonate A Potassium chlorate A Potassium Hydroxide (med)

Potassium Hydroxide (conc)

Potassium iodide A Propanol D Pyridine D Silicone oils B Silver nitrate A Soap solutions A Sodium bicarbonate A

Sodium bisulfate A Sodium bisulfite A Sodium borate A Sodium carbonate A Sodium chlorate B Sodium ferrocyanide B Sodium hydroxide (dil) A Sodium hydroxide, 25% B Sodium hydroxide (conc)

Sodium hypochlorite (dil)

Sodium nitrate A Sodium silicate A Sodium sulfide A Sodium sulfite A Stearic acid (dil) A Stearic acid (med) A Stearic acid (conc) A Sulfuric acid (dil) A Sulfuric acid (med) A Fluid compatibility Sulfuric acid (conc) D Sulfurous acid A Tannic acid A Tartaric acid A Tin salts A Toluene D Trichloroacetic acid B Trichloroethylene D Trisodium phosphate A Turpentine B Urea A Uric acid A Xylene D Zinc chloride A

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Pour plus d’information, rendez-vous sur www.secomam.fr

For more information, go to www.secomam.fr

AQUALABO 90 rue du Professeur P. Milliez 94506 Champigny-sur-Marne - FRANCE Tel.: +33 (0)1.55.09.10.10- Fax : +33 (0)1.55.09.10.39 info@aqualabo.fr - www.aqualabo.fr