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background image

Figure 2 Product components

1

Amperometric detector enclosure (closed)

8

Potentiostat (LC-3D) with power supply

2

Principles of EC Detection and Troubleshooting
Guide Manual

9

Direct voltage plate

3

Cross-flow cell kit (refer to

10

BNC cable

4

Electrode polishing kit (refer to

)

11

Cell lead cable

5

Storage vial for the reference electrodes

12

Cable with green banana jack

2

6

Teflon tubing (0.009 in. ID x 1/16 in. OD)

13

Silver working electrode (MF-1008)

7

Nut and ferrule for tubing

14

Working electrode jumper

2

Not used

English

7

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Содержание Lachat

Страница 1: ...DOC272 97 80511 Lachat Amperometric Detector 04 2015 Edition 1 User Instructions ...

Страница 2: ......

Страница 3: ...y to 50 at 40 ºC 104 ºF Power requirements 10 to 16 VDC unregulated at no load 100 mA hour Internal battery NiCad standard 9 V rechargeable battery Power supply 12 VDC 10 mA Power output 0 to 1 VDC at I OUT port Note 1 VDC agrees with a full scale reading in the selected range For example the I OUT port signal is 0 5 V when the range setting is 10 nA and a flow cell current is 5 nA Applied potenti...

Страница 4: ...ult in minor or moderate injury N O T I C E Indicates a situation which if not avoided may cause damage to the instrument Information that requires special emphasis Precautionary labels Read all labels and tags attached to the instrument Personal injury or damage to the instrument could occur if not observed A symbol on the instrument is referenced in the manual with a precautionary statement This...

Страница 5: ...accordance with the instruction manual may cause harmful interference to radio communications Operation of this equipment in a residential area is likely to cause harmful interference in which case the user will be required to correct the interference at their expense The following techniques can be used to reduce interference problems 1 Move the equipment away from the device receiving the interf...

Страница 6: ... Inlet tubing for the flow cell 5 Power supply for potentiostat 10 QC8500 channel Product components Make sure that all components have been received Refer to Figure 2 Figure 3 and Figure 4 If any items are missing or damaged contact the manufacturer or a sales representative immediately 1 The potentiostat is referred to as the amperometric controller in the QuikChem methods 6 English ...

Страница 7: ... 9 Direct voltage plate 3 Cross flow cell kit refer to Figure 3 10 BNC cable 4 Electrode polishing kit refer to Figure 4 11 Cell lead cable 5 Storage vial for the reference electrodes 12 Cable with green banana jack2 6 Teflon tubing 0 009 in ID x 1 16 in OD 13 Silver working electrode MF 1008 7 Nut and ferrule for tubing 14 Working electrode jumper 2 Not used English 7 ...

Страница 8: ...ence electrode holder 6 Cell gaskets 51 μM 0 002 in thick 4x Figure 4 Electrode polishing kit 1 Glass plates 2x 5 3 μm fine diamond polish 2 mL 2 Nylon diamond polish pads 10x 6 1 μm very fine diamond polish 2 mL 3 0 05 μm polishing alumina 7 mL 7 Alumina polish pads brown 5x 4 15 μm coarse polishing diamond 2 mL 8 Fine grit pads gray 5x 3 Not used 8 English ...

Страница 9: ...cal vibrations and electronic noise In a location where there is sufficient clearance to make plumbing and electrical connections Connect the entire system to the same grounded power line to prevent electrical noise Select a power line that is not used by instruments that cause electrical noise in the power line e g ovens mixers or motors If electro static discharge ESD causes electrical interfere...

Страница 10: ...er working electrode MF 1008 item 13 in Figure 2 on page 7 2 Cell gasket item 6 in Figure 3 on page 8 5 Flow cell dowel plate item 5 in Figure 3 on page 8 3 Working electrode jumper item 14 in Figure 2 on page 7 6 Quick release clamp item 4 in Figure 3 on page 8 10 English ...

Страница 11: ...e cap or damage to the reference electrode will occur Condition the reference electrodes in 3 M NaCl solution for a minimum of 3 hours before initial use Make sure that the glass part of the reference electrode is fully in the 3 M NaCl solution Refer to the illustrated steps that follow English 11 ...

Страница 12: ...Install a reference electrode Install one of the reference electrodes in the flow cell Make sure that the reference electrode has an O ring on it Refer to the illustrated steps that follow 12 English ...

Страница 13: ...ctrical installation Remove the cell lead cable Remove the cell lead cable that is installed in the enclosure The installed cell lead cable is not used Refer to the illustrated steps that follow English 13 ...

Страница 14: ...Install the cell lead cable Install the cell lead cable that has a red clip connector Refer to the illustrated steps that follow 14 English ...

Страница 15: ...d cable Install the direct voltage plate N O T I C E Set the QC8500 power to off before this procedure to prevent damage to components Refer to the illustrated steps that follow to remove the colorimetric detector module from the QC8500 channel and install the direct voltage plate Set the flow to off before tubing is disconnected English 15 ...

Страница 16: ... to prevent damage to the potentiostat Connect the BNC cable to the potentiostat and the direct voltage plate Connect the power supply to the potentiostat Refer to Figure 7 Note The battery fully charges in 12 hours when the potentiostat is off When the potentiostat is on the battery fully charges in 24 hours The potentiostat can operate on battery power for 20 to 24 hours on a full charge 16 Engl...

Страница 17: ...nifold for the QuikChem amperometric cyanide method on the Q8500 channel that will do the analysis 1 If there is already a manifold installed in the channel remove the manifold from the channel as follows a Disconnect the manifold inlet and outlet tubing from the channel Refer to the QuikChem 8500 Series 2 Installation documentation b Lift the manifold off the channel 2 Put the manifold for the Qu...

Страница 18: ...n tubing to plumb the outlet of the flow cell to a waste container Refer to Figure 8 Figure 8 Plumb the outlet tubing 1 Waste container 3 Enclosure drain tubing factory installed 2 Outlet tubing for the flow cell 4 Nut and ferrule for the outlet tubing 18 English ...

Страница 19: ...trode from the flow cell Turn the reference electrode holder to remove the reference electrode from the flow cell 2 Supply deionized water to the flow cell as follows a Connect a tube from the pump to the heater Refer to item 2 in Figure 9 on page 19 Refer to the QuikChem 8500 Series 2 Installation documentation for pump tubing installation b Put the other end of the tube in a container of deioniz...

Страница 20: ...the tubing for damage and blockages Replace tubing as necessary 4 Make sure that there are no leaks from the cell gasket area of the flow cell the tubing the fittings or the reference electrode holder 5 If a leak is found fix the leak 6 Set the pump speed to 35 7 Do steps 1 5 again 8 Set the flow to off User interface N O T I C E Do not touch the flow cell unless the CELL MODE knob is set to STBY ...

Страница 21: ... Options 5 10 20 50 100 or 200 nA V CELL MODE Controls the operation of the working electrode TEST An internal flow cell is connected Test mode is used to do electrical troubleshooting of the potentiostat The internal flow cell 10 MΩ supplies 100 nA V STBY The working electrode is off CELL The working electrode is on and the selected potential is applied The OUTPUT nA reading that shows on the dis...

Страница 22: ... of the flow cell 14 Set the CELL MODE knob to CELL The reading output current shows on the display 15 Let the reading decrease and become stable e g 3 to 8 hours 16 When the reading is stable set the DISPLAY knob to OFFSET nA 17 Turn the OFFSET knob until the display shows approximately 0 00 or 00 0 0 nA 18 Set the DISPLAY knob to OUTPUT nA The potentiostat is now configured Refer to the QuikChem...

Страница 23: ... for the reference electrode is not in the reference electrode hole put an O ring on the reference electrode to be installed 9 Do steps 2 5 of Remove bubbles from the system on page 19 10 Connect the white female connector to the reference electrode 11 Close the amperometric detector enclosure 12 Set the POWER switch of the potentiostat to ON 13 Set the DISPLAY knob to OFFSET nA 14 If the display ...

Страница 24: ...r damage to the working electrode can occur Polish the working electrode if the electrode response does not increase sufficiently after the working electrode is cleaned Refer to Clean the working electrode on page 23 Items to collect 0 05 μm polishing alumina Alumina polish pad brown with a soft velvet texture Glass plate from kit Squeeze bottle with methanol or ethanol Squeeze bottle with deioniz...

Страница 25: ...eaner for a maximum of 5 minutes d Remove the working electrode from the beaker e Rinse the working electrode with deionized water from a squeeze bottle 14 Rinse the working electrode with methanol or ethanol Dry the working electrode with a lint free cloth 15 Let the working electrode fully dry at room temperature before use Do not use heat or direct sunlight to dry the working electrode Replace ...

Страница 26: ...on page 25 The potentiostat operation is not correct Damaged potentiostat Identify if the operation of the potentiostat is correct Refer to Do potentiostat diagnostics on page 26 There is a slow steady decrease in the electrode response Unwanted material and or silver oxide has collected on the working electrode Polish the working electrode Refer to Polish the working electrode on page 24 A regula...

Страница 27: ...0 980 to 10 20 V 1 000 V 50 nA 98 0 to 102 0 nA 1 960 to 2 040 V 0 100 V 20 nA 9 50 to 10 50 nA 0 475 to 0 525 V 0 100 V 10 nA 9 50 to 10 50 nA 0 950 to 1 050 V 0 100 V 5 nA 9 50 to 10 50 nA 1 900 to 2 510 V Replacement parts W A R N I N G Personal injury hazard Use of non approved parts may cause personal injury damage to the instrument or equipment malfunction The replacement parts in this secti...

Страница 28: ...nd power supply each EF 1201 Reference electrode holder each MR 3068 Reference electrode O rings 10 pkg MF 2023 Reference electrodes with O rings 3 MF 2078 Storage vial for reference electrodes each MR 5275 Tubing Teflon 0 009 in ID x 1 16 in OD inlet and outlet tubing for the flow cell varies MR 5000 Working electrode silver each MF 1008 Working electrode jumper each MW 2010 Replacement parts Lac...

Страница 29: ......

Страница 30: ...hach com www hach com HACH LANGE GMBH Willstätterstraße 11 D 40549 Düsseldorf Germany Tel 49 0 2 11 52 88 320 Fax 49 0 2 11 52 88 210 info hach lange de www hach lange de HACH LANGE Sàrl 6 route de Compois 1222 Vésenaz SWITZERLAND Tel 41 22 594 6400 Fax 41 22 594 6499 Hach Company Hach Lange GmbH 2015 All rights reserved Printed in U S A ...

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