Dionex Conductivity Detector Manual

The Dionex Conductivity Detector is a high-precision analytical instrument designed for ion chromatography applications, featuring advanced conductivity measurement technology, temperature compensation, auto-ranging capabilities, digital signal processing, and compatibility with various chromatography data systems. Below are key sections for safety, features, installation, setup, operation, and troubleshooting.

1. Features at a Glance 2. Installation 3. First-Time Setup 4. Specifications 5. Controls and Settings 6. Connecting Devices 7. Operation Procedures 8. Maintenance Features 9. Care & Cleaning 10. Regulatory Information 11. Troubleshooting

Features at a Glance

Key components: Conductivity cell, Temperature sensor, Electronic control unit, Display interface, Data output ports, Power supply unit.

Feature	Description
Conductivity cell	High-sensitivity flow-through design for precise measurements
Temperature compensation	Automatic temperature correction for accurate readings
Auto-ranging	Automatic range selection for optimal signal resolution
Digital display	LCD screen showing conductivity values and status
Data output	RS-232 and analog outputs for data system integration
Power input	100-240V AC, 50/60Hz universal power supply
Flow cell	PEEK material construction for chemical resistance
Calibration memory	Stores multiple calibration curves
Self-diagnostics	Automatic system checks and error reporting
Remote control	Software control via chromatography data system

Installation

Unpack and inspect contents. Place on stable laboratory surface.

Position unit: Place on level surface near chromatography system.
Connect fluidics: Attach inlet/outlet tubing to flow cell ports.
Connect power: Plug into appropriate AC power outlet.
Connect data: Attach RS-232 or analog cables to data system.
Ground connection: Ensure proper grounding for electrical safety.

WARNING! Handle conductivity cell with care to avoid damage. Ensure all connections are secure and leak-free.

First-Time Setup

Power on detector; initialize system.

System initialization: Allow 30 minutes warm-up for stable readings.
Flow cell priming: Flush with appropriate mobile phase.
Calibration: Perform initial calibration using standard solutions.
Parameter setup: Configure range, temperature compensation, output settings.
Data system integration: Set up communication with chromatography software.

CAUTION! Use only recommended mobile phases and standards. Avoid air bubbles in flow system.

Specifications

Measurement Range: 0-20,000 μS/cm
Accuracy: ±1% of reading
Temperature Compensation: Automatic, 0-100°C
Cell Constant: User selectable (typically 1.0 cm⁻¹)
Response Time: User adjustable 0.1-10 seconds
Outputs: RS-232, 0-1V analog
Power Requirements: 100-240V AC, 50/60Hz
Operating Temperature: 4-40°C
Dimensions: Standard 19" rack mount or benchtop
Weight: Approximately 5 kg

Controls and Settings

Access settings via front panel controls or software interface.

Front Panel: POWER, MENU, ENTER, UP/DOWN arrows, ESCAPE, DISPLAY.

Measurement Parameters: Range selection, Temperature compensation, Cell constant, Response time, Output scaling. System Settings: Auto-zero, Calibration, Self-test, Data output format, Communication settings. Display Options: Real-time reading, Temperature, Status indicators, Error messages.

Connecting Devices

Chromatography system: Connect inlet/outlet tubing. Data system: RS-232 or analog outputs. Power: Standard AC power cord.

Turn off all devices before connecting.
Use appropriate tubing and fittings for fluid connections.
Ensure proper cable connections for data transfer.
Verify grounding for electrical safety.

Tip: Use high-quality tubing and avoid sharp bends to maintain flow integrity.

Operation Procedures

Standard operating procedure for conductivity measurements.

Power on: Allow system to initialize and stabilize.
Prime system: Flush with mobile phase to remove air bubbles.
Set parameters: Configure range, temperature compensation, output settings.
Calibrate: Use standard solutions for accurate measurements.
Start analysis: Begin chromatography run and monitor readings.
Data collection: Record or export conductivity data.
Shutdown: Flush system with appropriate solvent and power down.

WARNING! Always use compatible solvents and avoid exceeding pressure limits.

Maintenance Features

Auto-calibration: Scheduled calibration reminders. Self-diagnostics: Continuous system monitoring. Cleaning cycles: Automated flow cell cleaning procedures. Data logging: Historical performance tracking.

Care & Cleaning

Power off before cleaning. Use mild detergent solutions for flow cell cleaning. Avoid abrasive materials.

CAUTION! Do not use strong acids or bases for cleaning. Follow recommended cleaning procedures.

Regulatory Information

CE Mark: Complies with European Union safety standards. FCC Part 15: Class A digital device. RoHS compliant: Meets restriction of hazardous substances requirements. Copyright © 2025 Thermo Fisher Scientific; trademarks of Thermo Fisher Scientific. For technical support, visit www.thermofisher.com or contact 1-800-532-4752.

Troubleshooting

Symptom	Possible Cause	Corrective Action
Unstable readings	Air bubbles/temperature fluctuations	Purge air bubbles; ensure temperature stability; check cell condition.
No signal output	Cable connections/power	Check cable connections; verify power supply; restart system.
High background noise	Contaminated cell/electrical interference	Clean flow cell; check grounding; verify mobile phase quality.
Calibration failure	Standard solution/cell issues	Use fresh standards; verify cell constant; check temperature compensation.
Communication errors	Cable/software settings	Verify cable connections; check communication parameters; restart software.

Reset: Menu > System > Factory Reset if available.

Service: 1-800-532-4752; www.thermofisher.com