The Technix Augusta DHP4 CH₄ Detector is a stationary semiconductor device designed for the early detection of methane (CH₄) and other flammable gases. It operates in a diffusion air sampling mode without a fan. It is not intended to distinguish specific gases but responds to various mixtures of explosive or toxic gases.

The device is powered by a 230 V AC (±10 %) mains supply and is equipped with a 12 V DC backup power circuit. In the event of a power failure, it can independently activate safety outputs, such as closing a gas valve. The main unit has an IP65 protection rating, while the sensor parts are rated IP40.

The detector features a three-level LED indication (operation, alarm 1, alarm 2, fault), an internal siren, and two relays for connecting external devices. Concentration evaluation occurs approximately every 10 seconds, without delay. The alarm is automatically cancelled when the concentration falls below the set limit.

The device allows the connection of an external sensor type DHP4S, powered by the main unit. The sensor can be placed in a different room or at a different height level, depending on the nature of the detected gas.

Application:
The detector is suitable for gas boiler rooms, technical rooms, garages, or areas at risk of methane leakage. For methane, which is lighter than air, installation in the upper part of the room, near the ceiling, is recommended. Calibration and functional testing are necessary after installation. Calibration is recommended once a year, and functional testing every 4 months.