Lutron DO-5509 Pocket Dissolved Oxygen Meter

Lutron DO-5509 Pocket Dissolved Oxygen Meter

The Lutron DO-5509 is a compact, high-precision dissolved oxygen meter designed for reliable field and laboratory measurements. This portable device features a polarographic probe with integrated temperature sensor for accurate dissolved oxygen readings across various applications. ISO-9001 and CE certified, this professional-grade instrument delivers consistent performance for water quality assessment in aquaculture, research, environmental monitoring, and educational settings.

Key Features & Benefits

• Professional Accuracy - Precise measurements with ±0.4 mg/L accuracy after calibration
• Wide Measurement Range - Measures dissolved oxygen from 0 to 20.0 mg/L
• Polarographic Sensor Technology - Industry-standard measurement methodology for reliable results
• Automatic Temperature Compensation - Ensures accurate readings from 0 to 40°C
• Integrated Temperature Sensor - Built into probe for simultaneous oxygen and temperature readings
• Easy Calibration - Dedicated ZERO and CAL adjustment knobs for simple field calibration
• Pocket-Sized Design - Compact dimensions (131 × 70 × 25 mm) for portability
• Extended Probe Cable - 4-meter cable length for flexible measurement locations
• Clear Digital Display - Large 13 mm (0.5") LCD screen with 3½ digit readout
• Low Power Consumption - Approximately 3.5 mA for extended battery life
• Complete Package - Includes probe, carrying case, spare parts, and electrolyte solution
• Durable Construction - Robust design for field and laboratory use

Technical Specifications

Measurement Specifications

Parameter	Specification
Measurement Range	Dissolved Oxygen: 0 to 20.0 mg/L
Resolution	0.1 mg/L
Accuracy	±0.4 mg/L (after calibration at 23±5°C)
Temperature Compensation	Automatic from 0 to 40°C
Sensor Type	Polarographic with integrated temperature sensor
Calibration Controls	ZERO knob, CAL knob

General Specifications Lutron DO-5509 Pocket Dissolved Oxygen

Parameter	Specification
Display	13 mm (0.5") LCD, 3½ digits
Power Supply	006P DC 9V battery (heavy duty)
Power Consumption	Approximately DC 3.5 mA
Operating Temperature	0°C to 50°C (32°F to 122°F)
Operating Humidity	Less than 80% RH

Physical Specifications

Parameter	Specification
Dimensions (Main Unit)	131 × 70 × 25 mm (5.2 × 2.8 × 1.0 inches)
Dimensions (Oxygen Probe)	190 mm × 28 mm diameter (7.5" × 1.1" diameter)
Probe Cable Length	4 meters
Weight	350 g (0.77 LB) - with probe & battery

ApplicationsLutron DO-5509 Pocket Dissolved Oxygen

The Lutron DO-5509 is designed for a wide range of applications where dissolved oxygen measurement is critical:

• Aquaculture & Fish Hatcheries - Monitor oxygen levels for optimal fish health and production
• Aquarium Management - Maintain proper oxygen levels for aquatic life
• Environmental Monitoring - Assess water quality in lakes, rivers, and streams
• Wastewater Treatment - Monitor treatment process efficiency
• Medical Research - Support studies requiring precise oxygen measurements
• Agricultural Applications - Monitor irrigation water quality
• Mining Industry - Water quality assessment for mining operations
• Educational Settings - Laboratory demonstrations and student experiments
• Water Conditioning - Verify treatment system performance
• Quality Control - Process verification in industrial applications

Understanding Dissolved Oxygen Lutron DO-5509 Pocket Dissolved Oxygen

Dissolved oxygen (DO) is one of the most critical parameters in water quality assessment. It represents the amount of gaseous oxygen (O₂) dissolved in water and is essential for the survival of aquatic organisms and the overall health of water ecosystems. The DO-5509 measures this crucial parameter in milligrams per liter (mg/L), with key reference values including:

• 0-2 mg/L: Insufficient for most aquatic life; indicates severe pollution
• 2-4 mg/L: Supports only limited populations of aquatic life
• 4-7 mg/L: Supports warm-water fish populations
• 7-11 mg/L: Ideal for cold-water fish and most aquatic ecosystems
• 12+ mg/L: Supersaturated conditions (may occur in highly aerated waters)

Polarographic Measurement Technology Lutron DO-5509 Pocket Dissolved Oxygen

The DO-5509 utilizes polarographic sensor technology, which offers several advantages:

• Measurement Principle - Oxygen diffuses through a permeable membrane and is reduced at a cathode, generating a current proportional to oxygen concentration
• Stability - Provides reliable readings in various water conditions
• Industry Standard - Widely accepted methodology for DO measurement
• Temperature Integration - Built-in temperature sensor allows automatic compensation for temperature effects on oxygen solubility

Package Contents Lutron DO-5509 Pocket Dissolved Oxygen

The Lutron DO-5509 comes as a complete measurement system, including:

• DO-5509 Main Instrument - The pocket-sized meter unit
• Oxygen Probe (OXPB-09N) - Polarographic probe with integrated temperature sensor
• Spare Probe Head with Diaphragm Set (OXHD-04) - Two sets included for maintenance
• Probe-filling Electrolyte (OXEL-03) - For probe maintenance and refilling
• Carrying Case - For safe transport and storage
• Operation Manual - Comprehensive instructions for use and maintenance

Optional Accessories Lutron DO-5509 Pocket Dissolved Oxygen

• Replacement Oxygen Probe (OXPB-09) - For replacing the standard probe
• Additional Spare Probe Head with Diaphragm Set (OXHD-04) - For regular maintenance
• Additional Probe-filling Electrolyte (OXEL-03) - For continued probe maintenance

Maintenance & Calibration Lutron DO-5509 Pocket Dissolved Oxygen

To ensure accurate measurements, the DO-5509 features:

• Simple Calibration System - Dedicated ZERO and CAL adjustment knobs allow field calibration
• Replaceable Membrane Caps - Included spare diaphragm sets allow easy membrane replacement
• Refillable Electrolyte - Included electrolyte solution for probe maintenance
• Straightforward Maintenance - Simple procedures for keeping the probe in optimal condition

Operational Advantages Lutron DO-5509 Pocket Dissolved Oxygen

The DO-5509 offers significant benefits for professionals and technicians:

• Field Portability - Compact size and carrying case make it ideal for on-site measurements
• Long Probe Cable - 4-meter cable allows measurements at various depths and distances
• Battery Efficiency - Low power consumption extends operational time in the field
• Quick Response - Provides readings efficiently for multiple sampling locations
• Durable Construction - Built to withstand field use in various environments
• Clear Readings - Large LCD display ensures easy visibility of measurement values
• Complete Measurement System - All necessary components included for immediate use

Quality & Certification Lutron DO-5509 Pocket Dissolved Oxygen

The Lutron DO-5509 is manufactured under ISO-9001 quality management standards and meets CE certification requirements and IEC1010 safety standards. These certifications ensure reliable performance and accurate measurements for professional water quality assessment applications.

The Lutron DO-5509 Pocket Dissolved Oxygen Meter provides water quality professionals, researchers, and educators with a reliable, accurate, and portable solution for measuring this critical parameter in aquatic environments. Its combination of precision, ease of use, and comprehensive accessory package makes it an excellent choice for a wide range of dissolved oxygen measurement applications.

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