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In a world where global travel means infections can pass through populations fast, the ability to screen people for fever is a key tool in reducing the risk of disease spread. 

The vIRalert 2 fixed temperature monitoring system provides remote measurement of human body temperature (typically the face) to an accuracy of within 0.5°C enabling the detection of the small changes in temperature induced by a fever. 

Most economical thermal imagers can only achieve accuracy to within 2°C which is not adequate to detect a fever however by calibrating an imager in real time against a precise blackbody calibration source the vIRalert 2 system can provide accurate and reliable skin temperature measurement for the screening of personnel at point of entry to areas like airports, train stations, key operational facilities and factories and other places where infectious diseases can easily spread.

Using simple and intuitive software, this point-of-entry system provides automatic on-screen and audible alarms to alert the operator so that early action can be taken to protect the premises against the risk of spreading the infection.


  • Instant non-intrusive measurement using infrared thermal imaging technology with market-lead temperature measurement accuracy.
  • Monitors for high temperature without slowing down the flow of people.
  • Fixed remote measurement removes the risk of infection transmission to operators.
  • Complete On-line System Solution works out of the box and is simple to operate.
  • Quick and easy to install and re-locate as required with standard camera fitting for flexible mounting options.
  • Automatic alert function reduces potential for human error and immediately alerts the operator if trigger point reached.


  • Transport and Travel Airports, Railway Stations, Subways, Underground Rail Systems, Large Public Buildings
  • Education Schools, Colleges, Universities, Municipal Libraries
  • Business Manufacturing Facilities, Warehouses, Offices, Government Buildings


  • Thermal Imaging Camera – Continuously measuring 30 to 45°C / 86 to 113°F, with a 39 x 31° field of view and 80 x 64 resolution gives 5,210 temperature data points per frame, at a rate of 9 Hz.
  • Certified Blackbody Heat Source – Providing a trusted reference temperature value calibrated at 38 °C / 100.4 °F for the thermal imaging camera with a large plate for viewing at longer distances.
  • Connecting Cables – Ethernet and Power between camera and laptop (4m / 13ft).
  • Flexible Mountings – Camera supplied with wall mounting bracket and standard 1/4-20 UNC thread for use with alternative mounting options. Wall mounting lugs on calibration source enable easy fitting with wall hooks.
  • Screening Software – Continuous or still image showing normal temperature in black and white with abnormally high temperatures in red. On screen and audio alarm triggered if potential fever detected. Supply of Windows 10 Laptop for running software is optional.
  • Calibration – Each system is calibrated at our ISO17025 accredited facility in the UK.

A typical detection distance of 1 metre,  provides a field of view of 70 x 55 cm so that checks can be made without any contact with the operator.

The vIRalert 2 is AMETEK Land’s accurate thermal imaging system for human body temperature measurement.

Disclaimer: Human skin temperature is affected by a wide number of environmental and physiological factors. Elevated facial skin temperature may signify a raised body core temperature; correspondingly, an elevated core temperature may not be accompanied by a raised facial skin temperature. vIRalert systems are accurate scientific systems that must be operated strictly in accordance with the manufacturer’s operating manual. vIRalert systems are not intended, nor designed, to diagnose or detect medical conditions including, but not limited to, viruses or other illnesses. AMETEK Land thermal imaging products should only be used to detect variations of surface temperature. If elevated skin temperature is detected, the finding should be confirmed by other means, for example, an approved medical thermometer. The absence of an elevated skin temperature does not exclude a fever.


AMETEK Land (Land Instruments) is the world’s leading manufacturer of monitors and analysers for industrial infrared non-contact temperature measurement, combustion efficiency and environmental pollutant emissions

AMETEK Land (Land Instruments) is the world’s leading manufacturer of monitors and analysers for industrial infrared non-contact temperature measurement, combustion efficiency and environmental pollutant emissions.

Through our trusted range of leading-edge technologies, we are chosen the world over to deliver the highly accurate measurement solutions that precisely meet every customer’s process needs.

Our comprehensive product range includes:

– Fixed Spot Non-Contact Thermometers / Pyrometers – Flexible solutions, customisable for diverse processes and specialised applications.

– Portable Non-Contact Thermometers– Trigger-operated for easy use, our handheld thermometers provide spot temperature measurements with precise target viewing and on-board data storage.

– Fixed Thermal Imagers & Line Scanners– Setting the industry standard for performance. Backed by advanced software support, they supply the information you need to keep your process running safely and efficiently.

– Calibration Sources – A comprehensive range of blackbody calibration sources enabling high-precision calibration of radiation thermometers under on-site and laboratory conditions.

– Combustion Efficiency Monitors – We offer precision measurement solutions to measure oxygen, carbon monoxide and sulphuric acid dewpoint, which can help improve combustion efficiency, lower energy use, reduce emissions and prevent plant corrosion.

– Opacity and Dust Monitors– The most advanced range of opacity, dust and particulates monitors available, use patented technology to deliver highly accurate results. With no moving parts, they combine high reliability with low maintenance.

– Portable Gas Analysers – Offering up to nine gas measurements on a single analyser, we have solutions for all combustion monitoring and environmental compliance.

– Carbon Monoxide Detectors – Providing early warning of combustion in process and storage areas, our highly sensitive CO detectors monitor the entire process. This gives the best chance of early detection, allowing rapid action to prevent fire.

– Specific Industry Applications – We design systems specifically to solve critical temperature measurement problems industrial applications. Our specialised solutions provide optimised performance in challenging processes.

With unrivalled applications knowledge, choosing AMETEK Land ensures the highest standards of process safety, process control and product quality are reached.

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