Guildline Autosal 8400B User manual

TECHNICAL MANUAL
FOR
MODEL 8400B
“AUTOSAL”
NOTICE
The contents and information contained in this manual are proprietary to
Guildline Instruments Limited. They are to be used only as a guide to the
operation and maintenance of the equipment with which this manual was
issued, and may not be duplicated or transmitted by any means, either in
whole or in part, without the written permission of Guildline Instruments
Limited.
TM8400B-L-00
1 November 2004

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TABLE OF CONTENTS
1. INTRODUCTION...................................................................................................1-1
1.1. SCOPE................................................................................................................................................... 1-1
1.2. UNIT DESCRIPTION ......................................................................................................................... 1-1
1.2.1. APPLICATION................................................................................................................................. 1-1
1.2.2. PHYSICAL LAYOUT ...................................................................................................................... 1-1
1.3. CARE AND HANDLING.................................................................................................................... 1-1
1.3.1. USAGE.............................................................................................................................................. 1-1
1.3.2. CARRYING/TRANSPORTATION/STORAGE .............................................................................. 1-1
1.3.3. MAINTENANCE REQUIREMENTS .............................................................................................. 1-2
1.3.4. RECEIVING AND INSPECTION.................................................................................................... 1-2
2. SPECIFICATIONS................................................................................................2-1
2.1. GENERAL SPECIFICATIONS ......................................................................................................... 2-1
2.2. PERFORMANCE ................................................................................................................................ 2-2
3. OPERATING DATA..............................................................................................3-1
3.1. MEASUREMENT THEORY.............................................................................................................. 3-1
3.2. SAMPLE WATER FLOW ARRANGEMENT................................................................................. 3-3
3.3. BATH TEMPERATURE CONTROL................................................................................................ 3-4
3.4. SAMPLE FLOW RATE...................................................................................................................... 3-4
3.5. CONDUCTIVITY MEASURING CIRCUIT.................................................................................... 3-4
3.6. DISPLAY CIRCUITRY ...................................................................................................................... 3-6
4. CONTROLS AND INDICATORS..........................................................................4-1
4.1. GENERAL............................................................................................................................................ 4-1
4.2. CONTROLS.......................................................................................................................................... 4-1
4.3. INDICATORS ...................................................................................................................................... 4-2
5. INSTALLATION....................................................................................................5-1
5.1. GENERAL............................................................................................................................................ 5-1

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5.2. PROCEDURE....................................................................................................................................... 5-1
5.2.1. PRELIMINARY CHECK ................................................................................................................. 5-1
5.2.2. TEMPERATURE BATH FILLING.................................................................................................. 5-2
5.2.3. PRELIMINARY FUNCTION CHECK ............................................................................................ 5-3
5.2.4. BATH TEMPERATURE CONTROL CHECK................................................................................ 5-3
5.2.5. CONDUCTIVITY CELL CHECK.................................................................................................... 5-4
6. OPERATING INSTRUCTIONS.............................................................................6-1
6.1. GENERAL............................................................................................................................................ 6-1
6.2. OPERATING SEQUENCE................................................................................................................. 6-1
6.2.1. CHECKING ZERO REFERENCE ................................................................................................... 6-1
6.2.2. STANDARDIZATION PROCEDURE............................................................................................. 6-2
6.2.3. SAMPLE MEASURING PROCEDURE.......................................................................................... 6-3
6.3. CONVERTING INSTRUMENT READING TO SALINITY.......................................................... 6-5
6.4. STANDARD OPERATING PRACTICES......................................................................................... 6-6
6.5. MEASURING FOR OPTIMAL ACCURACY.................................................................................. 6-6
6.5.1. INSTRUMENT ACCURACY .......................................................................................................... 6-6
6.5.2. PROCEDURAL REFINEMENTS .................................................................................................... 6-6
6.6. SAMPLE HANDLING FOR OPTIMAL ACCURACY................................................................... 6-7
6.6.1. METHOD TO REMOVE SAMPLE BOTTLE AND LEAVE CELL FULL.................................... 6-7
6.6.2. METHOD TO REMOVE WATER FROM PICKUP TUBE PRIOR TO MEASURING NEW
SAMPLE.......................................................................................................................................................... 6-8
7. INSTALLATION AND OPERATING INSTRUCTIONS FOR OPTIONAL BCD
OUTPUT ......................................................................................................................7-1
7.1. GENERAL............................................................................................................................................ 7-1
7.2. BCD CONNECTOR PIN CODE ........................................................................................................ 7-1
7.3. OPERATING PROCEDURE.............................................................................................................. 7-1
8. GENERAL TECHNICAL INFORMATION.............................................................8-1
8.1. INSTRUMENT COMPONENT LOCATION................................................................................... 8-1
8.1.1. CABINET.......................................................................................................................................... 8-1
8.1.2. CHASSIS........................................................................................................................................... 8-1
9. THEORY OF OPERATION...................................................................................9-1
9.1. GENERAL............................................................................................................................................ 9-1
9.2. POWER SUPPLY ................................................................................................................................ 9-1

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9.3. TEMPERATURE CONTROL CIRCUIT.......................................................................................... 9-1
9.4. CONDUCTIVITY MEASURING CIRCUIT.................................................................................... 9-2
9.5. METER ASSEMBLY .......................................................................................................................... 9-3
9.5.1. METER CIRCUIT............................................................................................................................. 9-3
9.5.2. DISPLAY CIRCUIT ......................................................................................................................... 9-3
10. MAINTENANCE..............................................................................................10-1
10.1. INTRODUCTION.............................................................................................................................. 10-1
10.2. GENERAL INSPECTION ................................................................................................................ 10-1
10.3. GENERAL CLEANING.................................................................................................................... 10-1
10.4. OPENING THE CABINET............................................................................................................... 10-1
10.5. BATH TEMPERATURE VERIFICATION TEST......................................................................... 10-2
10.6. DISPLAY METER TEST.................................................................................................................. 10-2
10.7. HEATER LAMP REPLACEMENT ................................................................................................ 10-3
10.8. CONDUCTIVITY CELL REMOVAL............................................................................................. 10-3
10.9. PUMP SERVICING........................................................................................................................... 10-4
10.9.1. SERVICE INSTRUCTIONS...................................................................................................... 10-4
11. SERVICING AND CALIBRATION ..................................................................11-1
11.1. GENERAL.......................................................................................................................................... 11-1
11.2. MAINTENANCE SCHEDULE ........................................................................................................ 11-1
11.3. SERVICE NOTES.............................................................................................................................. 11-1
11.3.1. CLEANING FLUSHING MANIFOLD/TUBES........................................................................ 11-1
11.3.2. CHECKING THERMOELECTRIC COOLING UNIT.............................................................. 11-3
11.3.3. CHECKING IMPELLER ........................................................................................................... 11-3
11.3.4. CHECKING HEATER LAMPS................................................................................................. 11-3
11.3.5. REMOVING TOP PANEL......................................................................................................... 11-3
11.3.6. REMOVING TANK................................................................................................................... 11-4
11.4. AUTOSAL CALIBRATION............................................................................................................. 11-4
11.4.1. POWER SUPPLY CALIBRATION........................................................................................... 11-5
11.4.2. CONDUCTIVITY PCB CHECK ............................................................................................... 11-6
11.4.3. METER CALIBRATION........................................................................................................... 11-7
11.4.4. MATCHING AND BALANCING............................................................................................. 11-7
12. TROUBLESHOOTING....................................................................................12-1

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12.1. GENERAL.......................................................................................................................................... 12-1
13. RECOMMENDED SPARE PARTS.................................................................13-1
13.1. STANDARD SPARE PARTS............................................................................................................ 13-1
13.2. MAINTENANCE KIT....................................................................................................................... 13-1
13.3. PUMP MOTOR REPLACEMENT KIT.......................................................................................... 13-1
14. PARTS LISTS.................................................................................................14-1
15. DRAWINGS.....................................................................................................15-1

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TABLE OF FIGURES
FIGURE 3.1: LABORATORY SALINOMETER FLOW DIAGRAM................................................................... 3-2
FIGURE 3.2: CONDUCTIVITY MEASURING CIRCUIT..................................................................................... 3-5
FIGURE 4.1: FRONT PANEL................................................................................................................................. 4-3
FIGURE 7.1: CONNECTOR PINOUTS ................................................................................................................. 7-2
FIGURE 8.1: CHASSIS BACK............................................................................................................................... 8-2
FIGURE 8.2: FRONT PANEL................................................................................................................................. 8-3
FIGURE 8.3: TOP PANEL...................................................................................................................................... 8-4
FIGURE 9.1: TIMING DIAGRAM......................................................................................................................... 9-4
FIGURE 11.1: CONDUCTIVITY CELL SIMULATOR ....................................................................................... 11-9

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LIST OF TABLES
2-1: GENERAL SPECIFICATIONS ......................................................................................................... 2-1
2-2: PERFORMANCE ............................................................................................................................... 2-2
7-1: BCD CONNECTOR PIN CODING ................................................................................................... 7-2
11-1: MAINTENANCE SCHEDULE...................................................................................................... 11-2
11-2: OPERATING CHECKS SCHEDULE............................................................................................ 11-2
11-3: SIMULATION RESISTANCES................................................................................................... 11-12
12-1: TROUBLESHOOTING GUIDE..................................................................................................... 12-5

Section 1
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1-1
1. INTRODUCTION
1.1. SCOPE
This manual contains technical specifications, detailed description and maintenance information,
parts lists, and diagrams for the Guildline Instruments 8400B AUTOSAL "Laboratory
Salinometer".
1.2. UNIT DESCRIPTION
1.2.1. APPLICATION
The instrument is semi-portable, semi-automatic, and is used in the land based or sea-
borne laboratory to determine salinity levels in saline samples by measuring the
equivalent conductivity ratio to a standard seawater sample.
1.2.2. PHYSICAL LAYOUT
The instrument is enclosed in an aluminum cabinet measuring 68 cm high, 53 cm wide
and 55 cm deep; maximum total weight is approximately 70 kg. The cabinet incorporates
a flushmounted handle on each side for easy carrying and is designed for bench
mounting. The instrument chassis is held in place in the cabinet on four track slides for
easy withdrawal from the front by removing four polished binder head screws.
Removing the three left-hand screws allows the front panel to hinge out. All primary
controls, indicators, and the adjustable sample bottle holder, cell inspection window and
external tubing connections are located on the front panel. Power input, 120/240 volt
switching and the BCD OUTPUT connector are located on the rear panel.
1.3. CARE AND HANDLING
1.3.1. USAGE
Although this instrument is designed for high precision measurement it is quite rugged.
It requires only reasonable care and good maintenance practices to ensure optimum
performance. It can withstand continuous operation and if required, long periods
between operations.
1.3.2. CARRYING/TRANSPORTATION/STORAGE
The handles provided on the sides of the cabinet provide the easiest, safest means of
lifting the instrument. Use the valves provided to drain the internal fluids and so reduce
weight, prevent possible leakage during transportation, and to prevent damage if
subjected to below freezing temperatures. A tank drain plug is provided with the unit for
eliminating drips from the nipple during transportation.

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1.3.3. MAINTENANCE REQUIREMENTS
Use the maintenance schedule (Section 10) as a guide for planning the implementation of
the recommended, in-service maintenance.
1.3.4. RECEIVING AND INSPECTION
This instrument is thoroughly tested and inspected before packing and shipping. As soon
as possible after receipt, inspect the instrument for external damage, ensure that all items
in the packing list are present, and complete the installation checks. Refer to the
warranty card at the front of this manual for further instruction if any damage or
deficiency is found.