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When it comes to refrigerant leak detection, the predominant sensing technologies are undoubtedly Non-Dispersive InfraRed (NDIR) and Metal-Oxide Semiconductor (MOS). NDIR is the most performing technology, but its cost has so far prevented a widespread use in light commercial and residential applications, where MOS has remained the predominant choice.
Although MOS requires periodic calibration (normally every 6 months or less) and substitution every 2 to 4 years, other than suffering from interference from many chemicals other than the target gas and from dependency from environmental conditions, the affordable price has tipped the balance in its favor in settings like food retails, hotel rooms, apartments and offices.
This is about to change with the new IREF LITE series from N.E.T. – a complete line of NDIR sensors for refrigerant gas leak detection, set to hit the market at an astonishing price.
This will make the gasselectivity, accuracy, poison immunity and extended lifetime of NDIR technology affordable for any setting, dramatically improving gas detection performances in the HVAC-R market, improving occupants’ safety and lowering cost-of-ownership.
The IREF Lite series from N.E.T. include solutions for R-32, R-1234yf and R-1234ze in %LEL range. In 2019, the series will be extended to several other refrigerant gases in ppm range.
The analogue output provides a user-programmable threshold output consisting of different voltage levels – by default, 10% LEL=1V, 25% LEL=1.5V. The user can freely select the output level, the corresponding output and the hysteresis of the thresholds through Modbus RTU commands.
In fact, digital communication via Modbus RTU commands allows complete access to the sensor functioning parameters, diagnostics and periodic recalibration.
The standard industrial 7-series size and pinout fit existing detectors and is significantly smaller than most NDIR-based alternatives available.
In order to guarantee maximum safety, IREF LITE has been developed in order to meet SIL1 requirements (SIL is a quantitively measurement of the ability of a system to carry out its safety function when called to do so).
Nano Environmental Technology s.r.l. (N.E.T.) was founded in 2002 with the mission of setting new standards in the gas sensor market; high quality, excellent technical support, competitive pricing and short delivery times.
N.E.T. now manufactures and sells a complete range of gas sensing devices on an OEM basis for industrial and commercial applications used by instrument manufacturers worldwide.
The new range of NDIR sensors on a microprocessor platform includes solutions for the detection of hydrocarbons, CO2, SF6 and refrigerants.
The new IR technology is manufactured in entirety at the N.E.T. headquarters in Cornaredo near Milan in Italy.
N.E.T. has assembled a team of dedicated engineers and market specialists with wide experience in gas detection who together are able to provide a high level of technical and commercial support.
N.E.T., an ISO9001 registered company since 2003, is able to offer:
- A full range of gas sensors that meet the needs of every customer
- On-time delivery
- The highest level of technical and integration support
- Market realistic and competitive pricing to give our customers an effective cost advantage