The AP4C-F is a chemical detector for gas and aerosol that provides continuous 24/7 monitoring for land or naval assets. It can detect a broad range of conventional and unconventional threats, from chemical warfare agents and toxic industrial chemicals to homemade terrorist mixtures and nontraditional agents, with fully automatic alarm and sampling that requires no action from the operator.
The AP4C-F is designed to withstand the harsh environment of naval operation. Proengin states it is not sensitive to humidity and salt spray, and that alarm and sampling are fully automatic, requiring no action from the operator.
According to Proengin, it is a combat proven system which has been tested and is in use with several navies, first responder fireboats, as well as on buildings and key infrastructure worldwide.
Illustrative photos; they do not show the detector.
A handheld goes where an operator carries it. The AP4C-F stays put: Proengin offers options from full system integration to a ready to mount kit, for land or naval assets, with the detector sampling continuously and reporting over RS485 to a third-party solution or Proengin software solution.
Sampling runs on its own: fully automatic alarm and sampling requiring no action from the operator.
Hydrogen Flame Spectrometry covers gas and aerosols, with detection results within seconds, according to Proengin.
Alarms are set at the factory to the customer's needs. Mode: instant concentration or dose.
RS485 to a third-party solution or Proengin software solution, with a built in 32Mbit flash memory keeping around 530h of data logging.
The AP4C-F senses by Hydrogen Flame Spectrometry, and its H₂ is produced through an embedded electrolyzer. Proengin rates that at 28 days H₂ autonomy on 1 water bottle.
28 days H₂ autonomy on 1 water bottle.
H₂ produced through embedded electrolyzer, inside the detector.
The sensing technology behind detection of CWA (including 4th generation), TIC / TIM, gas and aerosols.
Proengin lists quick start-up and response time among its key features.
Rugged design for field use and to withstand harsh environments (dust, humidity, temperature), and designed to sustain marine application.
Proengin describes the AP4C-F as able to detect a broad range of conventional and unconventional threats. It works with no library and no filters, providing continuous & simultaneous detection of gas and aerosol threats.
Proengin states that, based on the initial requirement, it offers various options of deliverable, from full system integration to a ready to mount kit. Options are available; tell FarrWest about your vessel or site when you request a quote.
Connectivity is RS485 to a third-party solution or Proengin software solution.
Proengin states it does offer turnkey CBRN integration solutions.
Warranty is 1 year. Proengin notes that prepaid maintenance and extended warranty options are available upon initial acquisition.
The AP4C-F is not the handheld AP4C. It is a fixed, mounted system for 24/7 monitoring. Proengin also offers a handheld for dismounted personnel, and the AP4C-FB adds biological detection in the same housing family.

A handheld detector with gas and sampling capability for dismounted personnel.
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Continuous 24/7 chemical monitoring for land or naval assets. Gas and aerosols.
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Same housing family with added biological detection (virus, bacteria, spore).
View AP4C-FB| Detection | |
|---|---|
| Sensing technology | Hydrogen Flame Spectrometry |
| Detection |
|
| Mode | Instant concentration or dose |
| Alarms | Factory configuration based on customer needs |
| Hydrogen | |
|---|---|
| H₂ running time |
|
| Environment | |
|---|---|
| Storage temperature | -39°C to +71°C / -38°F to +160°F |
| Operating humidity | 93% HR (non condensing) @ 55°C (131°F) |
| Environmental conditions | Tested against heavy rain, salt, fog, ice & freeze |
| Data & connectivity | |
|---|---|
| Data logging | Built in 32Mbit flash memory; around 530h data logging capability |
| Connectivity | RS485 to a third-party solution or Proengin software solution |
| Compliance & warranty | |
| Regulation / performance test |
|
| Warranty | 1 year |
Two-page product datasheet.
PDF · Proengin ServiceOEM-certified service and support on every product we deliver. When a repair or calibration falls outside our in-house scope, we coordinate directly with the third-party manufacturer and manage the logistics end to end.
Learn more RelatedNeed biological detection too? See the chemical and biological version in the same housing family.
View productFarrWest is a pre-approved vendor on BuyBoard and Purchasing Cooperative of America (PCA). Government agencies can buy on competitively-bid cooperative contracts, with no lengthy RFP.
How co-op buying worksServiceOEM-certified service and support on every product we deliver: functional checks and certified calibration on the manufacturer’s required cycle, back in service in 48–72 hours typical.
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View productTell us what you need to monitor, whether a naval platform, a strategic site or a transit hub, and request a quote on the AP4C-F and its deliverable options.