Oldham BM 25 Multi Gas Monitor

Oldham BM 25 Multi Gas Monitor Capable of monitoring from one to five gases through diffusion or sample draw, the BM25 gas detector packs the benefits of a fixed-system area monitor into an easily transportable, yet rugged instrument. Designed for team protection or area surveillance, the unit is most suitable for perimeter monitoring, rig overhauls, and mobile or short-term work in areas where fixed detection systems are not suitable. There are 17 interchangeable " smart" sensor options available for the BM25, making the system easily adaptable to a variety of applications and industries. When the BM25 detects a hazardous level of oxygen, toxic or combustible gas, the top-mounted beacon sends a flashing, bright signal in all directions while emitting a powerful, 103 dB siren alarm. The BM25 can be used as a stand-alone monitor or wired so that alarm signals transfer from one unit to another. This setup can create a safety perimeter around a detected atmospheric hazard, or transmit a manually initiated emergency signal over a wide area. The BM25 comes standard with a high capacity nickelmetal-hydride battery pack offering up to 170 hours of continuous runtime. Long-term area monitoring is possible in hazardous locations with an intrinsically safe trickle charge power supply. Also standard are STEL and TWA readings and nearly four months of datalogging capacity for a five-gas configuration. Specifications Case Material: Impact resistant polycarbonate Dimensions: 425 mm x 160 mm x 130 mm ( 16.7" x 6.3" x 5.1" ) Weight: 6.8 kg ( 15 lbs) Sensors: Combustible Gas - Catalytic Diffusion Methane, Propane, Butane, Isobutane, LPG, Ethanol, Pentane - Infrared Oxygen and toxic gases - Electrochemical CO 2 - Infrared Isobutylene - PID Measuring Ranges: Gas Symbol Range Increments Combustible Gases LEL 0-100% LEL 1% Oxygen O 2 0-30% of volume 0.1% Carbon Monoxide CO 0-1, 000 ppm 1 ppm Hydrogen Sulfide H 2 S 0-100 ppm 1 ppm Hydrogen H 2 0-2, 000 ppm 1 ppm Sulfur Dioxide SO 2 0-30 ppm 0.1 ppm Chlorine Cl 2 0-10 ppm 0.1 ppm Nitrogen Dioxide NO 2 0-30 ppm 0.1 ppm Nitric Oxide NO 0-300 ppm 1 ppm Hydrogen Chloride HCl 0-30 ppm 0.1 ppm Hydrogen Cyanide HCN 0-30 ppm 0.1 ppm Ammonia NH 3 0-1, 000 ppm 1 ppm Phosphine PH 3 0-1 ppm 0.01 ppm Arsine AsH 3 0-1 ppm 0.01 ppm Silane SiH4 0-50 ppm 0.1 ppm Ethylene Oxide C 2 H 4 O 0-30 ppm 0.1 ppm Carbon Dioxide CO 2 0-5% of volume 0.1% Display: Graphic liquid crystal display w/ backlight Datalogging Capacity: 700 hours w/ 5 gases Audible Alarm: 103 dB @ 1 meter Visual Alarm: Ultra-bright LED beacon visible 360 degrees Operating Temperature Range: -20º C to + 50º C ( -4º F to + 122º F) typical Operating Humidity Range: 15% -95% non-condensing ( continuous) typical Power Source ( Runtime) : Nickel-Metal Hydride ( 100 hours typical) Recharge Time: 4.5 hours typical Certifications: CSA - Class 1, Groups A, B, C, D T4; EX ia d IIC T4; C22.2 No. 152 ( Excluding Aspirated and PID Configurations) IECEx/ ATEX EEx ia d I/ IIC; IP66 Equipment Group and Catagory: II 2G / I M2