Crowcon has reported that pressurised CO₂ and mixed-gas systems used in pubs, restaurants, and breweries present an ongoing safety risk.
Blackline Safety Wins ADNOC Order for 28,000 Devices
ADNOC has placed its first order with Blackline Safety under a multi-year agreement, beginning with 1,000 gas detectors and 1,200 location beacons
Portable gas detection technology updated with dual-gas capability
Product unveiled for industrial use across global safety applications
Teledyne Gas & Flame Detection has introduced a new portable gas detection device for personal safety monitoring, designed to measure two gases simultaneously.
The manufacturer announced the launch of the PS DUO on 24 June 2025, highlighting its application in hazardous environments where real-time gas level monitoring is required.
According to Teledyne Gas & Flame Detection, the PS DUO is a compact handheld device that provides audible, visual and vibrating alerts when gas concentrations exceed safety limits.
The PS DUO uses passive diffusion sensing and is available in multiple gas pairing combinations. Target gases include carbon monoxide, hydrogen sulphide, sulphur dioxide, ammonia, oxygen, hydrogen, nitrogen dioxide and ozone.
Teledyne said the detector is ATEX/IECEx-rated and built with a rugged rubberised enclosure, lightweight casing and a replaceable battery designed to last up to two years.
Real-time data logging and safety system integration
The PS DUO includes wireless connectivity and on-device memory for storing up to 30 alarm events.
Teledyne reported that the device’s LCD display provides continuous concentration readouts for both gases.
The device is intended for use across a wide range of sectors including oil and gas, industrial processing and confined space work.
In regions such as the Middle East, Teledyne said the H₂S and SO₂ gas detection capabilities will be especially relevant.
For hydrogen sulphide, the PS DUO supports a measuring range of 0 to 100 ppm with 0.1 ppm resolution. The low and high alarms are set at 10 ppm and 15 ppm respectively.
For sulphur dioxide, users can configure the device for a range of 0 to 20 ppm, also with 0.1 ppm resolution. Low and high alarms are set at 2 ppm and 5 ppm.
Configurable sensor options and international applicability
Teledyne confirmed that users can configure the PS DUO’s dual-gas capabilities to match specific site requirements.
Pawel Kulik, Product Manager for Portables at Teledyne Gas and Flame Detection, said: “With its reliable performance, flexible gas pairings and wireless integration, our PS DUO offers a powerful new option for industrial safety programmes – backed by Teledyne’s global service and support.”
He added: “It adds to an existing and highly successful range of personal safety and gas monitoring solutions that includes our portable Protégé ZM and PS200.”
Related portable monitors from Teledyne
Teledyne’s portable range also includes the Protégé ZM single-gas monitor and the PS200 four-gas compliance monitor.
The Protégé ZM is available in O₂, CO, H₂S and SO₂ versions. The company stated it is a zero-maintenance monitor suited for individual use in field applications.
The PS200 is described by Teledyne as a compact four-gas monitor that is lightweight, water resistant and capable of measuring any combination of LEL, O₂, CO and H₂S.
Teledyne noted that the PS200 includes an internal pump for use in confined space entry and other applications requiring sample draw capability.
Product specifications and warranty
The PS DUO measures 56 x 89 x 21 mm and weighs 200 g.
The company stated it is IP67-rated and ergonomically designed for user comfort.
The device operates on a single replaceable battery and is backed by a two-year warranty.
The PS DUO is intended for continuous operation under normal field conditions.
Teledyne said the combination of alarm feedback, flexible gas pairings and rugged housing make the detector suitable for long-term deployment.
Portable gas detection technology updated with dual-gas capability: Summary
Teledyne Gas & Flame Detection launched the PS DUO on 24 June 2025.
The device allows simultaneous detection of two gases.
It includes wireless connectivity and internal memory for alarm logs.
Target gases include CO, H₂S, SO₂, NH₃, O₂, H₂, NO₂ and O₃.
The device provides audible, visual and vibrating alerts.
It uses passive diffusion sensing for continuous monitoring.
The PS DUO is ATEX/IECEx-rated and IP67 compliant.
It weighs 200 g and measures 56 x 89 x 21 mm.
Battery life under standard use is up to two years.
The device has a two-year manufacturer’s warranty.
Alarm thresholds are set at 10/15 ppm for H₂S and 2/5 ppm for SO₂.
Pawel Kulik is the Product Manager for Portables at Teledyne.
The product joins Teledyne’s existing portable gas monitor range.
Other devices in the range include the Protégé ZM and PS200.
Teledyne said the PS200 is suitable for confined space use.
Gas Sensor for Highly Flammable Refrigerant (R290) Ensures Safe and AccurateRefrigerant Leak Detection in HVAC Systems
Environmental regulations are driving the European HVAC industry to switch from synthetic to natural refrigerants, such as R290. To ensure safe operation with this highly flammable refrigerant, Senseair, a Swedish subsidiary of Asahi Kasei Microdevices (AKM), has developed “Sunlight R290,” a gas
sensor featuring high measurement accuracy and operating range while minimizing heat generation, packaging space, and power consumption. High-volume shipments of Sunlight R290 are scheduled to begin in September 2024.
Existing and upcoming regulations in regard to PFAS (per- and polyfluoroalkyl substances, also called
“forever chemicals”) and F-gases (fluorinated greenhouse gases) are severely restricting the use of
conventional synthetic refrigerants in air conditioning, heat pumps, and other HVAC systems. The
natural refrigerant R290 is propane gas, which is considered to be a more sustainable alternative to
conventional solutions. However, due to its high flammability, reliable and highly accurate leakage
detection measures are required to ensure safe operation.
Senseair’s newly developed gas sensor Sunlight R290 employs the latest NDIR (non-dispersive
infrared) technology, utilizing LED light sources and photodiode sensors. Due to its minimal heat
generation, the sensor can be safely operated with R290. Additionally, due to the characteristics of the
NDIR method, the detection is less affected by vibrations or interfering gases, enabling robust and
reliable measurements that meet the stringent leak detection requirements of the IEC 60335-2-40
safety standard for electric heat pumps, sanitary hot water heat pumps, and air conditioners.
With a measurement range of 0-100% LFL (lower flammable limit) – the concentration of a combustible
material in air below which ignition will not occur – the sensor features a high measurement accuracy
of +/- 2.5% LFL.
Low power consumption and superior service life
With an operating temperature range of -40°C to 70°C, and a relative humidity (RH) range from 0 to
95%, Sunlight R290 can stably operate in challenging environments and covers a broad range of
applications, including air conditioning units, heat pumps, dehumidifiers, and control panel coolers.
Operated under normal environmental conditions, a service life of over 15 years can be expected. In
addition, the sensor features an automatic baseline correction (ABC) algorithm, enabling maintenance
free use over extended periods. All of this is achieved within a small packaging size of 34 mm × 21 mm
× 12 mm and a power consumption of 94 μA.
Sunlight R290 is also available in a standalone refrigerant detection system, the RDS R290, which
allows for leak detection without the need for integration into equipment.
To learn more, visit https://www.asahi-kasei.com/sustainability/