Product Description RKI Instruments HS-04 Series H2S Single Gas Monitor is is a single-gas toxic personal monitor designed to operate for many years with field replaceable sensors and filters. With a protective rubber boot and an IP-67 rating, the 04 Series with a 3 year warranty is built to operate for a long time. Applications: Hazardous material, Mining Refineries / petrochemical, Water / wastewater treatment, Pharmaceuticals, Utilities, Chemical plants, Fire Services Key Features: Personal monitoring for H2S Operates 3,000 hours on replaceable alkaline batteries Digital LCD readout Easy "Turn On" and "Turn Off" by pressing down on the Power Mode button. Pocket size 2.1"(W) x 2.6"(H) x 0.9"(D) Light weight 2.8 ounces Impact, dust, and water resistant (IP-67) Replaceable rubber boot Alligator clip with 360° rotation Data log 10 to 600 hours with adjustable intervals Audible / visual / vibration alarms Automatic backlight Low battery alarm Intrinsically safe, ATEX and C / US approvals Field serviceable 3 year warranty on material and workmanship including sensors Specifications: Gas Detected: Hydrogen Sulfide Detection principle: Electrochemical Detection range: 0 ~ 2000.00 ppm (1 ppm) Alarm set points: 1st: 5 ppm, 2nd: 30 ppm, 3rd: 100 ppm, TWA: 1.0 ppm, STEL: 5.0 ppm Alarm types: Gas alarms: 1st, 2nd and 3rd (user adjustable), OVER alarm, STEL and TWA, Trouble alarms: Sensor connection, low battery, circuit failure, and calibration range error Gas sampling: Diffusion Response time: T90 in 10 seconds Accuracy: 0 - 100 ppm: ± 5% of reading or ± 2 ppm H2S (whichever is greater), 101 - 200 ppm: ± 20% of reading Data logging: 10 second intervals = 5 hours, 5 minute intervals = 150 hours, 10 minute intervals = 300 hours Instrument records alarms, alarm trends, gas readings, calibration & bump test history, instrument information and settings. Continuous operation: Alkaline dry cell: 3,000 hours (at 25°C, no backlight) Safety rating: ATEX/IECEx approved. QPS classified, “C / US”, as intrinsically safe, Class I, Division 1, Groups A, B, C, D Enclosure: Dust and water resistant with IP-67 rating Display: Digital LCD readout, gas name & concentration, auto backlighting during alarm, operation icon, battery icon Monitor Includes: Rubber protective boot Alkaline batteries (2-AAA size) Alligator clip Data log software HS-04 Manual: 04 Series User Setup Program Operator’s Manual: