Buy AccuTools eL-720 Carbon Dioxide (CO₂) Gas Leak Detector

Professional CO₂ Leak Detection for HVAC/R Technicians

The AccuTools eL-720 Carbon Dioxide (CO₂) Gas Leak Detector is a dedicated diagnostic instrument for technicians working with CO₂/R744 refrigeration systems and other carbon-dioxide applications.

Designed for professional HVAC/R service, the eL-720 combines an infrared CO₂ sensor with a flexible probe, automatic calibration, dual sensitivity settings and fast response. Instead of relying on a general refrigerant detector, technicians can use a detector specifically designed around the characteristics of carbon dioxide.

This makes the eL-720 a practical addition to the service toolbox for commercial refrigeration, CO₂/R744 systems, beverage equipment, restaurants, breweries, wineries, bakeries and industrial CO₂ applications. AccuTools lists CO₂ refrigeration service, carbonated beverage systems and bulk CO₂ service among its applications.

Buy AccuTools eL-720 Carbon Dioxide (CO₂) Gas Leak Detector

When a refrigeration system uses R744, finding the source of a suspected leak requires equipment designed to detect CO₂. The eL-720 is purpose-built for this task and uses infrared technology for CO₂ detection. AccuTools distinguishes the eL-720 from its conventional refrigerant detector range, which is intended for CFC, HFC and HCFC refrigerants.

The result is a focused HVAC/R tool for technicians who regularly service modern CO₂ refrigeration equipment.

Built for the Service Technician

The eL-720 is designed around practical field requirements:

• Dedicated CO₂/R744 detection
• Infrared sensing technology
• High and low sensitivity modes
• Automatic calibration
• Approximately 10-second warm-up
• Less-than-1-second response specification
• Less-than-1-second reset specification
• Flexible 12-inch probe
• Audible and visual leak indication
• One-button operation
• Approximately 20 hours of battery operation
• Low-battery warning
• Automatic power-off
• Compact handheld construction
• Protective blow-molded carrying case

These features make the detector suitable for routine inspection as well as troubleshooting difficult-to-locate CO₂ leaks.

Designed Specifically Around CO₂/R744

CO₂ is increasingly used as a refrigerant in commercial and industrial refrigeration. When a system develops a suspected leak, technicians need a detection method appropriate for the gas being serviced.

The eL-720 is designed specifically for carbon dioxide, making it a dedicated option for R744 service work.

Potential inspection points can include:

• Refrigeration piping
• Mechanical connections
• Fittings
• Valves
• Service connections
• CO₂ refrigeration components
• Beverage equipment
• Carbonation systems
• CO₂ distribution equipment
• Other areas where CO₂ leakage is suspected

The detector should be used as part of an appropriate professional leak-detection and repair procedure.

Dual Sensitivity for Different Leak Conditions

One of the useful features of the eL-720 is its two-level sensitivity system.

High Sensitivity

The manufacturer specifies high sensitivity at less than 400 ppm over ambient under its stated test conditions.

This setting can be useful when investigating smaller suspected leaks or narrowing down a leak location.

Low Sensitivity

The low-sensitivity specification is less than 4,000 ppm over ambient.

This provides another detection range for situations where a higher concentration of CO₂ is present.

Having two sensitivity settings allows technicians to adapt the instrument to different inspection conditions instead of relying on a single detection setting.

Fast Startup and Response

Time matters during HVAC/R service calls. The eL-720 has an approximately 10-second warm-up period, followed by automatic calibration.

AccuTools specifies a response time of less than 1 second and a reset time of less than 1 second.

This allows technicians to move between suspected leak points efficiently during a service inspection.

Flexible Probe for Hard-to-Reach Areas

The eL-720 incorporates a 12-inch / 30 cm probe.

The extended probe allows the sensing end to be positioned closer to potential leak locations while keeping the main instrument in the technician’s hand.

This can be useful when working around:

• Refrigeration cabinets
• Pipe joints
• Valves
• Fittings
• Service ports
• Beverage equipment
• Refrigeration machinery
• Tight service areas

Audible and Visual Leak Indication

The eL-720 provides both audible and visual leak indications, giving technicians feedback while they work around the system.

This can be particularly useful when the technician is focused on manipulating the probe around equipment rather than continuously looking at the detector.

Compact Tool for the HVAC/R Toolbox

A professional leak detector needs to be easy to transport from one service call to another.

The eL-720 measures approximately 8 × 2.5 × 2.25 inches and weighs approximately 15 oz / 425 g with batteries.

Its compact form makes it easy to carry alongside other refrigeration service equipment.

The supplied blow-molded case provides dedicated storage and transportation for the detector and accessories.

Long Battery Operation

The eL-720 operates using four AA alkaline batteries.

AccuTools specifies approximately 20 hours of operating time. The instrument also incorporates a low-battery indicator and automatic power-off function.

For field technicians, this means the detector can be used across multiple inspections without requiring a mains power connection.

Where Can the eL-720 Be Used?

Commercial CO₂ Refrigeration

The eL-720 is well suited to technicians servicing commercial refrigeration systems that use R744.

Supermarket and Food-Service Refrigeration

CO₂ refrigeration equipment can be found in demanding commercial environments where rapid leak identification is important to maintenance operations.

Restaurants and Beverage Equipment

The detector can be used for appropriate CO₂ leak-detection work around carbonated beverage equipment and restaurant applications.

Breweries and Wineries

CO₂ is used in beverage production and processing environments, making dedicated CO₂ detection useful for maintenance personnel.

Bakeries

The eL-720 can also be used in suitable bakery applications involving carbon dioxide.

Industrial CO₂ Applications

The detector can be used for appropriate industrial CO₂ leak-detection work, including applications involving CO₂ manufacturing, delivery and service.

Technical Specifications

Specifications are based on AccuTools’ published product information and eL-720 manual.

What Comes With the eL-720?

The standard AccuTools package includes:

• eL-720 CO₂ Gas Leak Detector
• Blow-molded carrying case
• 4 × AA alkaline batteries
• Instruction manual

A Practical Tool for R744 Service

The eL-720 is especially useful when CO₂ leak detection is a regular part of your HVAC/R service work.

Rather than carrying a general-purpose instrument and trying to adapt it to every refrigerant, a dedicated CO₂ detector provides a purpose-specific solution for R744 refrigeration and CO₂ applications.

It can complement other HVAC/R equipment such as:

• Digital manifold gauges
• Refrigerant charging scales
• Vacuum gauges
• Recovery machines
• Vacuum pumps
• Nitrogen regulators
• Temperature probes
• Refrigerant analyzers
• Electronic diagnostic instruments

Important Refrigerant Compatibility Note

The eL-720 is a CO₂ detector. It should not be presented as a universal refrigerant leak detector.

For conventional CFC, HCFC and HFC refrigerants, use a detector specifically designed and rated for those gases. AccuTools identifies its eL-520 as its conventional refrigerant gas leak detector, while the eL-720 is the CO₂/R744 model.

Professional Leak Detection Workflow

For qualified HVAC/R technicians, the eL-720 can form part of a systematic leak investigation:

1. Identify the refrigerant used by the system.
2. Confirm that the system uses CO₂/R744.
3. Switch on the eL-720.
4. Allow the detector to complete its warm-up and automatic calibration.
5. Select the appropriate sensitivity level.
6. Move the probe around suspected leak locations.
7. Watch and listen for the detector’s response.
8. Narrow the search to the suspected leak source.
9. Confirm the suspected leak using an appropriate secondary method where required.
10. Repair the system and perform a follow-up leak inspection.

Always follow the manufacturer’s instructions and applicable workplace safety procedures.

Keep the Detector Ready for the Next Service Call

Good tool maintenance helps keep diagnostic equipment ready for field work.

Recommended practices include:

• Check batteries before leaving for a service call.
• Keep the detector clean and dry.
• Protect the sensing area from contamination.
• Store the instrument in its supplied case.
• Follow the manufacturer’s maintenance instructions.
• Inspect the probe before use.
• Operate the detector within its specified temperature range.

Buy AccuTools eL-720 CO₂ Gas Leak Detector

For HVAC/R professionals working with CO₂ refrigeration and R744 systems, the AccuTools eL-720 provides a dedicated approach to carbon dioxide leak detection.

Its combination of infrared sensing, automatic calibration, two sensitivity levels, rapid response, flexible probe access and portable battery operation makes it a useful service instrument for commercial refrigeration and other CO₂ applications.

Buy AccuTools eL-720 Carbon Dioxide (CO₂) Gas Leak Detector for professional HVAC/R service, R744 refrigeration maintenance, beverage equipment, restaurants, breweries, wineries, bakeries and industrial CO₂ applications.