1/6 2/6 3/6 4/6 5/6 6/6 +1 Gas Detectors ReAct 4 Product code: PW-093-RA4-X The ReAct 4 gas detector is specifically designed for critical functions such as measuring, monitoring and detecting reactive gases in the surrounding atmosphere, with particular emphasis on aggressive or corrosive atmospheres. See full description Functionalities: Certificates: Product description Technical details Supported gases The ReAct 4 gas detector is specifically designed for critical functions such as measuring, monitoring and detecting reactive gases in the surrounding atmosphere, with particular emphasis on aggressive or corrosive atmospheres. It can be installed in a variety of ways: either integrated into the Gas Safety System Sigma Gas or installed as a stand-alone detector, integrated with supervisory systems (e.g. by means of its 4…20mA output signal or its RS-485 interface). The ReAct 4 detector has been developed to replace our earlier Sigma ReAct device. ReAct 4 is based on a completely new electronic design. It has a new measuring head HR with significantly improved measuring properties. It also is equipped with self diagnostics properties – user is immediately informed about the failure states. Please visit our YouTube channel where you will learn about the properties of our devices: Functionalities WATCH THE ENTIRE PLAYLIST Products WATCH THE ENTIRE PLAYLIST Realizations WATCH THE ENTIRE PLAYLIST Power supply Voltage VCC 15 – 50 V Power 0.3 – 4 W Environment Ambient temperatures Specified depending on: the temperature class of the device (see ATEX below), device configuration, including the sensor used 0 – 40°C ( Storage ) Humidity 10 – 90% long term 30 – 90% long term ( Storage ) 0 – 99% short term without condensation Pressure 1013 ± 10% hPa ATEX II 3G Ex nA IIC T3 Gc -40 ≤ Ta ≤ 50°C IP IP63 Analog output 4 – 20 mA Output type Sink / source Rload_MAX (source mode) 300 Ω US_MAX (sink mode) 30 V (max. voltage between pins „S” and „-”) Digital output parameters Relays 3 x Floating contacts, 24 V / 0.3 A Not protected Digital communication parameters RS-485 RS-485, Modbus ASCII, Sigma Bus, od 19200 Bd 7E1 Teta Teta Bus Parameters of wireless communication Bluetooth 4.2 Integrated signalling equipment (optical) D=LCD: alphanumeric display 2×8 of the LCD type with LED indicators D=FLED: multicolour status display LED Integrated signalling equipment (audible) D=FLED.A: 70 dB, 1 m distance Protection class III Cable glands Cable diameter range See table with device configuration External thread E=ALB, ALZ, SS: M20 x 1,5 E=PES: M25 x 1,5 Acceptable cables 0.5 – 2.5 mm2 (cable lugs 2 x 1 mm2 or 2 x 0.75 mm2 should be used for double wires) Enclosure material See table with device configuration Measuring head material Stainless steel + PTFE Weight 3.5 kg Mandatory periodic inspection Every 12 months (Calibration Certificate validity) time can be shortened due to difficult working conditions Mounting E=ALB, ALZ, SS – to the supporting structure, 2 screw holes 4 mm, hole spacing 127 mm E=ALB, ALZ, SS we recommend using mounting brackets E=PES – to the supporting structure, 4 screw holes for M6, hole spacing 106 x 82 mm ammoniacarbon monoxidechlorinechlorine dioxideethyl alcoholhydrogen chloridehydrogen cyanidehydrogen fluoridehydrogen sulfidemethyl alcoholnitrogen dioxidenitrogen oxidesozonephosgenephosphaneSulphur dioxide Videos Placement and role in the system Files to downloadDatasheets:ReAct 4 Gas Detector - Datasheet Download fileUsers's manual:ReAct 4 Gas Detector - User Manual Download fileCE declarations:ReAct 4 Gas Detector - Declaration of Conformity Download fileOthers:Measurement parameters configuration of gas detectors Download file Related products Gas DetectorsSmArtGas 4Gas DetectorsProGas 4