DTekGaz

DTekGaz probes are offered with three primary sensor technologies: catalytic sensors for detecting explosive gases like methane, GPL, and hydrogen; semiconductor sensors for refrigerant monitoring (R134a, R404A, R407C, R410A, R32, 507); and electrochemical sensors for specific toxic gases such as carbon monoxide and hydrogen sulfide. Each sensor type is matched to the target gas family, ensuring accurate detection across different industrial applications. The catalytic sensors are typically used in hazardous areas where explosive atmospheres may occur, while semiconductor sensors are suited for HVAC and refrigeration systems. Electrochemical sensors provide specificity for low-concentration toxic gas monitoring. All probes are designed for integration with DTekGaz control modules and can be configured for various alarm thresholds.

DTekGaz probes are available with IP ratings ranging from IP54 to IP66, depending on the model and housing material. Standard probes, such as the HCF100 refrigerant probe, feature self-extinguishing polypropylene housings that meet VDE 0471 standards, providing IP55 protection. For more demanding environments, models like the SG850 CO2 probe use aluminum housings with IP66 protection, suitable for outdoor or washdown areas. The choice of housing material and IP rating should be based on the installation environment—polypropylene is lightweight and corrosion-resistant, while aluminum offers higher mechanical strength and thermal conductivity. Always verify the specific IP rating for the selected model to ensure it meets the requirements of the installation site.

The DTekGaz detection unit with 4 probes (SKU DTK08006) monitors gas presence across multiple zones simultaneously. It features an LCD display and four LED indicators, one per probe, providing real-time status. The unit is configured with two pre-alarm thresholds: pre-alarm 1 at 8% LEL (120 ppm) and pre-alarm 2 at 13% LEL (200 ppm), with a general alarm at 20% LEL (300 ppm). Each threshold can be independently set, and the unit outputs relay signals for fault, pre-alarm, and general alarm. This allows for staged response protocols, such as ventilation activation at pre-alarm and equipment shutdown at general alarm. The unit is designed for fixed installations and operates on 24 VDC, making it suitable for integration into existing control systems.

DTekGaz offers calibration gas cylinders in 1-liter aluminum containers, charged to 12 bar pressure, providing 12 liters of equivalent gas at atmospheric pressure. Available gas types include carbon monoxide (CO) at 300 ppm, as well as other gases depending on the detector model. These cylinders are used for field validation and calibration of portable and fixed gas detectors, ensuring accuracy and compliance with safety standards. The compact size (280 mm height, 75 mm diameter) makes them easy to transport and store. Always use the correct calibration gas concentration for the specific detector and sensor type, as specified in the product documentation.

Yes, many DTekGaz probes carry ATEX EX II2 GD certification, which qualifies them for use in Group II explosive atmospheres (surface industries) where gases, vapors, or dusts may be present. This certification indicates compliance with European Directive 2014/34/EU and relevant EN standards. The '2' in the classification denotes suitability for Zone 1 (gases) and Zone 21 (dusts) applications. When selecting a probe for hazardous areas, verify that the specific model has the required ATEX rating and that the installation follows local regulations. For non-hazardous areas, standard IP-rated probes without ATEX certification may be sufficient.

DTekGaz fixed gas detection systems typically operate on 24 VDC, which is standard for industrial control panels. Portable detectors use rechargeable 12 V DC batteries with a 6 Ah capacity, featuring a low self-discharge rate of 17% after six months of storage. For fixed installations, the control modules and probes are powered via a 24 VDC supply, which can be sourced from a dedicated power supply unit or an existing control system. The battery option is useful for portable or backup applications, ensuring continuous operation during power outages. Always check the specific power requirements of each component to ensure compatibility with your system's power architecture.