Shenzhen Wanyi Technology Co., Ltd.  

Product Name: Hydrogen Sulfide Detector, Stationary Hydrogen Sulfide online Monitor, Testing Equipment Model NO.: EST-301-H2S Type: Electrochemical Gas Analyzer Gas: H2S Certification: CE Portable: online Customized: Customized Brand: Cestsen Trademark: CESTSEN Transport Package: Box Specification: 226 * 177 * 92mm Origin: China Product Description EST-301-H2S hydrogen sulfide online monitor is a fixed gas concentration measuring instrument. It adopts high-precision circuit design. The core adopts imported sensor chip. After Wanji Technology develops calibration, signal amplification, calibration calibration and rigorous testing. Give the factory.The instrument is designed and produced in accordance with relevant national standards:GB/T18883-2002 GB3095-1996GB50325-2010GB50325-2001GB12358-2006 Mainly used:Disease control medical public places, occupational health and health testingNatural gas, liquefied gas application placeCoal minePetrochemicalIndoor air quality testing agencyFeatures:High quality sensor for stable and reliable performance.External power supply DC5V, built-in rechargeable battery.Intelligent design, automatic detection at startup, no operation, zero calibration is convenient.It has the function of restoring factory settings to prevent misoperation.Supports ppm and mg/m3 unit conversion.Configuration method LCD liquid crystal display technology, can display gas type, unit, concentration value, 1 hour and 8 hour average, date and time.The instrument has a weighted concentration value viewing function for 1 hour, 8 hours, and time period, which is in line with the national indoor air quality testing standard.With alarm function, it can set high and low alarm value, two-level sound and light alarm, and two high-brightness LED lights remind users to pay attention when alarming.The instrument is small and light, and can be easily placed in a pocket or bag.ISO9001 quality certification, ISO14001 environmental system certification, can pass the national measurement certification.Optional sampling pump for safe measurement of closed spaces such as pipes, tunnels and test chambers.Range selection:ModelGasRangeppmdisplay resolutionppmSensitivityppmPrecisionResponse timeT90EST-301-H2S-100hydrogen sulfide0-1000.10.1±5%F.S.<35SElectrical performance:1, working voltage: 12-30VDC2, working current: 20-30mA (static)3, display mode: with backlight 4 bit LCD display4. Display unit: PPM8, test object: hydrogen sulfide9, detection principle: electrochemical10, detection method: diffusion11, response time: 60s12. Alarm value: can be set (0 means cancel the alarm)13, alarm mode: two levels of sound and light alarm (external sound alarm, optional)14, alarm error: ≤ ± 5% alarm set value15, contact capacity output: 10A 250VAC16, repeatability: ≤ 2%;17. Stability: ≤±2% F.S/6h (zero point), ≤±5% F.S/6h (gain)18, working temperature: -10 ° C ~ +40 ° C19. Relative humidity: ≤ 95% RH without coagulation20, atmospheric pressure: ± 10% atm21, signal output: three-wire system 4-20mA (analog) and RS485 (digital)22. Transmission distance: ≤100m (4-20mA), ≤1000m (RS485)23, explosion-proof grade: Ex d IIC T624, protection level: IP6525, wiring: M20 * 1.5 internal thread26, installation method: wall-mounted27, shell material: aluminum explosion-proof shell (main shell), stainless steel (accessory)28, the whole machine size: 226 * 177 * 92mm29, the whole machine weight: about 1.5 kgProduct list1. EST-301 explosion-proof fixed gas detection transmitter host....................................12, EST-301 sensor probe...............................................................................................13, EST-301 explosion-proof type sound and light alarm ................................................ (optional)4, EST-301 instruction manual........................................................................................15, EST-301 calibration report..........................................................................................16, EST-301 product packaging box..................................................................................17, EST-301 mounting screws............................................................................................4 pairs8, EST-301 induction magnetic bar...................................................................................1