Brand: FORENSICS DETECTORSModel: FD-90A-HCl User Manual: Click HereBlog Article: Click Here Features: 🔬 ACCURATE: Professional hydrogen chloride (HCl) detector, 0 - 50 ppm with 0.1 ppm resolution. Comes FACTORY-CALIBRATED. ⚛️ DETECT: Electrochemical cell sensor with error: ≤ ±5 % F.S. and response time: < 30 sec. Zero and span calibration options. Comes factory-calibrated. 🎆 ALARMS: Adjustable audio, visual, and vibration alarms alert when preset levels are reached. 💪 STRONG: Shockproof, water-resistant, dustproof, and explosion-proof with belt clip. 🕵️ TRUSTWORTHY: 1-year limited warranty. Arrives with a signed and dated calibration certificate. Details: The professional hydrogen chloride (HCl) gas detector by FORENSICS is the best in its class with many advanced features. Hydrogen chloride is a colorless or slightly yellow corrosive gas with a pungent odor. Although HCl is not considered a combustible gas, it may form combustible compounds in contact with alcohol and hydrogen cyanide or aluminum-titanium alloys. Dissolving hydrogen chloride in water will yield a corrosive acid. OSHA TWA is 5 ppm and IDLH is 50 ppm. Comes factory-calibrated. Advanced features such as temperature detection, alarm recording, alarm setting, backlight high-resolution LCD, calibration features, and others are included. Included: HCL 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 (HCl)Calibration Gas Regulator (C10)Tubing Accessories (sold separately): Pump and ProbeGas Detector Hard CaseGas Detector PouchGas Detector StandGas Sensor Replacement (HCl) Specifications Hydrogen Chloride (HCl) Detection: 0 - 50 ppm with 0.1 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