Brand: FORENSICS DETECTORSModel: FD-90A-H2User Manual: Click HereBlog Article: Click Here Features: 🔋ACCURACY: Made to detect hydrogen (H2), 0 - 1000 ppm with 1 ppm resolution. ⚛️ DETECT: Electrochemical cell sensor with error ≤ ± 5% F.S. and response time: < 30 sec. Zero and span calibration options. 🎆 ALARMS: Adjustable audio, visual, and vibration alarms alert when preset levels are reached. Alarms come with digital time stamping and logging. 💪 STRONG: Shockproof, water-resistant, dustproof, and explosion-proof with belt clip. Rechargeable Li-ion battery 1500 mAh via micro-USB cable, comes with all accessories. 🕵️ TRUSTWORTHY: 1-year limited warranty. Arrives with a signed and dated calibration certificate. Details: The professional hydrogen (H2) gas meter by FORENSICS. Detecting hydrogen gas in vehicles, fuel cells, storage tanks, laboratory settings, or outgassing from batteries. H2 is a colorless, odorless, and tasteless gas which makes it very important to adopt detection instrumentation. It is the lightest gas and explosive in the air over 4%. When in contact with chlorine, oxygen, or other oxidizers, hydrogen is flammable and burns with a nearly invisible flame. Our H2 gas detector has high precision and provides robust measurements for fieldwork, inspections, occupational safety, industrial, and environmental applications. The instrument employs a high-quality electrochemical sensor. Included: Gas detector, belt clip, sling, user manual, USB charging cable, calibration cover, and certified calibration certificate. Calibration Options: Calibration Service by Forensics DetectorsCalibration Tutorial (DIY) Calibration Kit (DIY sold separately):Calibration Gas (H2)Calibration Gas Regulator (C10)Bump Gas (H2)Tubing Accessories (sold separately): Pump and ProbeGas Detector Hard CaseGas Detector PouchGas Detector Stand Gas Sensor Replacement (H2) Specifications Hydrogen (H2) Detection: 0 - 1000 ppm with 1 ppm resolutionRecommended Calibration Period: 12 monthsGas Sensor Type: Electrochemical Gas SensorGas Sensor Life: 2 - 3 yearsError: ≤ ± 5% F.SResponse Time: < 30 secIndicators: LCD indicates the time, concentration, internal temperature, and battery level Alarm: Indication of alarm, fault, and low voltage with LED, sound, and vibrationStore / Operating Temp: 0°F - 122°FStore / Operating Humidity: 24 hoursCharging Time: 3 hoursExplosion Rating: ATEX certified Ex ib IIC T4 GbWeight: 5 oz / 140 g (including battery)Dimensions: 4.3 x 2.3 x 1.7 inchesCalibration Location (USA): Los Angeles, California, USACalibration Standard (USA): USA NIST Traceable Gas SourceCalibration Location (Europe): Athens, GreeceCalibration Standard (Europe): European NPL Traceable Gas Source