Plug & Play gas detection for industrial refrigeration

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Gas detection for industrial refrigeration
Gas detection for industrial refrigeration

Danfoss gas detection solution

Reliable and efficient gas detection for industrial refrigeration

To meet the relevant safety requirements for refrigeration systems and to protect people, produce and property from the adverse effects of a potential leak of toxic and/or flammable refrigerants, having a gas detection system that you trust, is essential. With the new Gas Detection solution Danfoss offers a series of fixed gas detector units that are not only reliable and accurate – but also much easier and intuitive to work with – from initial specification to long term operation.

Plug & Play gas detection – simplify and improve the way you work

• All gas detection units come factory pre-configured to match refrigerant and typical PPM settings required*

• Integrated calibration routine – calibration with gas no longer involves the use of potentiometers and multimeters

• Easy replaceable and pre-calibrated sensors for plug & play replacement.

• Service due information and service alerts support optimized maintenance planning.

Flexibility building your gas detection system
Flexibility building your gas detection system
Flexibility building your gas detection system
Flexibility building your gas detection system

Flexibility building your gas detection system

The Danfoss Gas Detection Solution provides a high degree of flexibility when designing and building your gas detection system.

The portfolio ranges from basic to heavy duty models complemented by a range of accessories. The gas detection units (GDU) can detect a wide range of refrigerant gases including Ammonia (R717), CO2 (R744), fluorinated refrigerants (HCFC and HFCs), and Propane (R290). They come with various sensor technologies to match the specific refrigerant, application, and safety requirements of the refrigeration system including electrochemical (EC), semiconductor (SC), Pellistor (P), and infrared sensors.

The analog or RS485 Modbus connection enables easy communication to a central system. Stand-alone gas detection units with integrated relays are available and can be connected to external systems directly to activate alarm devices.

To provide a strong plug and play solution, all gas detection units come factory preconfigured to match refrigerant and typical PPM setting requirements. Depending on national regulations PPM settings may be subject to change.

Basic & Basic+

Simple cost-effective solution with the same high-quality sensors, which equip the Premium range.

The Basic and Basic+ gas detection units are used for monitoring and warning of hazardous gas concentrations.

They are intended to be connected to a central system like the Danfoss gas detection controller, or a PLC, by either Analog or RS485 open Modbus communications. The central system converts the alarm signal from the gas detection unit to activation of alarm devices.

The basic units have a factory default set-up with two (2) alarm set-points ready for use. The integrated software enables the user to configure two individual alarm ranges. Alarm 1, a pre-alarm indicating the gas level has passed a predefined threshold 1, and – if the gas level passes predefined threshold 2 – the final alarm 2. Adjustment, calibration, and maintenance are done via the dedicated Service tool or the PC tool.

The basic units come with sensors for Ammonia and selected HFC’s. Depending on the application, they are available with an electrochemical or a semiconductor sensor.
• Basic : Gas detection unit with one sensor.
• Basic+ : In addition to the Basic model, this unit Includes a buzzer & light function for local alarm (visual and audio).

Premium range

Flexibility on an unparalleled scale.

The Premium range of gas detection units are used for monitoring and warning of hazardous gas concentrations. They can be used for detecting most commonly used refrigerants.

They are intended as stand-alone or connected to a central system like the Danfoss gas detection controller or a PLC. As stand-alone, the on-board relays can be used for activation of alarm devices, while the analog or RS485 Modbus connection to a central system allows centralized monitoring and alarm activation. Four out of the six Premium variants have integrated display/keypad for direct access to the user-interface. This means that alarm level adjustments, calibration and parameter adjustments can be made directly on the menu in the display. For models without display (Premium & Premium+) the interface is via the dedicated Service or PC tool.

The Premium gas detection units have a factory default setup with two (2) alarm setpoints ready for use. The user-interface enables the user to configure two individual alarm settings. Alarm 1, a pre-alarm indicating the gas level has passed a predefined threshold 1 and – if the gas level passes predefined threshold 2 – the final alarm 2. A total of four (4) alarm set-points on each gas detection unit is possible.

The Premium variants come with sensors for Ammonia, CO2 and selected HFC’s. Depending on the application and model, each unit is available with one or two different sensors (Premium Duplex). Sensor technologies include semiconductor, electrochemical, Pellistor or infrared.

Heavy Duty

ATEX/IECEx applications and harsh conditions

The Heavy Duty gas detection model is used for monitoring and warning of hazardous Ammonia gas concentrations. It is intended for ATEX/IECEx applications and consists of a robust flameproof metal enclosure that can be kept closed after wiring, as configuration is performed by magnetic field to the display via a magnetic pen.

The Heavy Duty is intended as stand-alone or connected to a central system like the Danfoss gas detection controller or a PLC. As stand-alone, the on-board relays can be used for activation of alarm devices, while the Analog or RS485 Modbus connection to a central system allows centralized monitoring and alarm activation.

The gas detection unit come with a factory default setup including two (2) alarm set-points ready for use. The integrated software enables the user to configure two individual alarm ranges. Alarm 1, a pre-alarm indicating the gas level has passed a predefined threshold 1, and – if the gas level passes predefined threshold 2 – the final alarm 2.

The unit comes with sensors for Ammonia. Depending on the application, it’s available with an electrochemical, a semiconductor or a Pellistor sensor.

Danfoss Gas Detection portfolio

Complete Units overview and part numbers

Danfoss GD Basic range

Danfoss GD Basic range
Danfoss GD Basic range

Danfoss GD Premium range

Danfoss GD Premium range
Danfoss GD Premium range

Danfoss GD Heavy Duty range

Danfoss GD Heavy Duty range
Danfoss GD Heavy Duty range

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