100% Employee Owned, Founded 1954

Close this search box.
Cross Logo Horizontal

Draeger Ammonia Gas Detection For Refrigeration

Ammonia (NH3) is a cost effective and environmentally friendly gas used in cooling systems throughout the food and beverage industry. While it is an efficient coolant and a great alternative to fluorocarbons, it’s also toxic, causing corrosion to the skin and mucous membranes. At concentrations above 15% (150,000 ppm), the ammonia atmosphere is potentially explosive. And because people who work with ammonia daily can become desensitized to the acrid smell, it’s important to have gas detection systems which can detect high concentrations before they become a hazard. Here’s a great overview of ammonia use in cold storage from Cross’s partner, Dräger.


ANSI/ASHRAE 15-2022 specifies the safe design, construction, installation, and operation of refrigeration systems.  While the standard covers various topics, such as cylinder pressure guidelines, four specific sections directly relate to gas detection.  Dräger manufactures market leading gas detection systems to ensure safety wherever refrigeration systems are used.

Section mandates installing gas detection points in areas susceptible to hazardous substance release.  Dräger Electrochemical (EC) sensors, paired with a Polytron 7000 or 8100 to measure ammonia (NH3) levels within the 0-300 ppm range. When the concentration of NH3 surpasses the Recommended Exposure Limit (REL) of 25 ppm prescribed by NIOSH, evacuating all personnel from the affected area immediately is imperative. 

Draeger Ammonia Gas Detection For Refrigeration 1
Draeger Regard 7000 Fixed Gas Detection Controller

Section also mandates that the refrigeration detection systems activate release mitigation controls.  The Regard 3000 and Regard 7000, for smaller and larger applications respectively, are paired with  Dräger’s cutting edge sensors for robust and reliable performance at a variety of temperatures.

Section outlines several additional detection system requirements. One crucial aspect is the communication speed, where the transmitter must notify the safety controller within 30 seconds of detecting a leak of 25% LFL. DrägerSensors have some of the fastest response times in the industry, well within the 30 second response time.

Section mandates de-energizing refrigerant compressors, pumps, and valves at 25% LFL. By using Dräger controller and transmitter solutions, it is easy to comply with this standard.

Portable Ammonia Detection Solutions

Plant personnel can also wear portable ammonia detection solutions like the Dräger Pac 8000 single gas detector for ammonia. It features  audible, visual and vibrating alarms and is protected against water, dust and other contaminants with a special membrane filter.

Why Work with Cross Company?

Whether it’s fixed or portable detection systems from Draeger, it’s important to have the right equipment in place to keep your personnel safe. The process solutions team at Cross Company works with customers in a range of industries and can help determine the best products to use in your application. Work with our process engineers to improve safety in your process.

Draeger Ammonia Gas Detection For Refrigeration 2
Dräger PAC 8000 disposable personal gas detector

See how our Process Solutions team can help improve quality, increase efficiency, and reduce risk.

Contact our Team

Hang Tight! We're Searching... Searching... Searching...

We’re looking through thousands of pages to find the most relevant information.

In the meantime, enjoy these fun facts…

Did you know… Cross Company is an ESOP (Employee Stock Ownership Plan). Our ESOP started in 1979 and as of 2006, we are 100% employee-owned! Learn more about our ESOP and how that benefits both team members and our customers.
Did you know... the precision measurement group at Cross was founded in 1939 by our current CEO's grandfather, Jim King. That's a whole lot of calibration!
Did you know... A fingerprint weighs about 50 micrograms. We know, we weighed it! The residue left from a finger can actually make a difference in weight results which is why we wear gloves when we calibrate weights. For reference, a sheet of paper is about 4.5 grams, that’s 4.5 million micrograms.
Did you know… Cross Company has grown significantly since our start in 1954. Over the years we've acquired 26 companies! Today, our five groups have expertise in everything from industrial automation to precision measurement, and industry knowledge going all the way back to 1939.