BM25 Transportable Multi Gas Monitor - Multimarga is the distributor of Industrial Scientific portable gas detectors and Oldham fixed gas detectors from the USA.

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Transportable Multi Gas Monitor

The BM 25 packs the benefits of a fixed system area monitor into a rugged, user-friendly and transportable instrument. It was designed to detect one to five gases for mobile or temporary work applications, team protection, area surveillance or places where fixed detection systems are not suitable.

Powered by a NiMH battery pack, the BM 25 multi gas monitor offers up to 170 hours of continuous run time. Other standard features include STEL and TWA values, as well as a datalogging capacity of more than four months. Multiple units can be grouped using optional alarm transfer kits. This protects larger areas by transferring alarms from one BM 25 to the next. An intrinsically safe trickle charger is also available for long-term area monitoring in classified zones.

The BM 25 is durable and versatile. It is suitable for a wide range of industries including refineries and pharmaceutical production. Applications include turnaround work sites, rig overhauls and fence-line surveillance.

Technical Specifications

Enclosures:	IP66 - Impact resistant polycarbonate
Dimensions:	470 X 180 X 190 mm (16.7" X 7.1" X 7.5")
Sensors:	Combustible Gas – Catalytic Diffusion Methane, Propane, Butane, Isobutane, LPG, Ethanol, Pentane – Infrared Oxygen and Toxic Gases – Electrochemical CO2 – Infrared Isobutylene – PID
Measuring Ranges:	Combustible Gases: 0-100% LEL in 1% increments 0-100% LEL in 1% increments - Infrared: Methane, Propane, Butane, Isobutane, LPG, Ethanol, Pentane Methane: 0-100% of volume in 1% increments – Infrared Percent of volume in 0.1% increments: Oxygen: 0-30% Carbon Dioxide: 0-5% ppm in 1 ppm increments: Carbon Monoxide: 0-1,000 Hydrogen Sulfide: 0-100 Hydrogen: 0-2,000 Nitric Oxide: 0-300 Isobutylene: 0-2,000 Ammonia: 0-1,000 ppm in 0.1 ppm increments: Sulfur Dioxide: 0-30 Chlorine: 0-10 Nitrogen Dioxide: 0-30 Hydrogen Chloride: 0-30 Hydrogen Cyanide: 0-10 Silane: 0-50 Ethylene Oxide: 0-30 ppm in 0.01 ppm increments: Phosphine: 0-1 Arsine: 0-1
Display:	Graphic liquid crystal display with backlight
Datalogging Capacity:	200,000 Measurements
Audible Alarm:	103 dB @ 1 meter
Visual Alarm:	Ultrabright LED beacon visible 360 degrees
Temperature Range:	-20ºC to 50ºC (-4ºF to 122ºF) sensor dependent
Humidity Range:	1%-99% RH Sensor Dependent
Run Time:	NiMH (up to 170 hours operating time, 135 hours in wireless mode)
Recharge Time:	4.5 hours, typical
Wireless Network	2.4 GHz frequency 30 Devices per network 16 independent networks Communication distance: 0.6 mile line of sight
Approvals: (Sensor-specific)	ATEX & IECEx VERSIONS (BM 25 and BM 25W) BM 25 (standard version) Without IR sensor: II 1G / I M1 Ex ia IIC T4 Ga / Ex ia I Ma With IR sensor: II 2G / I M2 Ex ia d IIC T4 Gb / Ex ia d I Mb BM 25 W (wireless version) Without IR sensor II 1G / I M1 Ex ia IIB T4 Ga / Ex ia I Ma orII 2G / I M2 Ex ia IIC T4 Gb / Ex ia I Mb With IR sensor II 2G / I M2 Ex ia d IIC T4 Gb / Ex ia d I Mb INERIS 05ATEX0044 IECEx INE 06.0002 CSA VERSION (BM 25A and BM 25AW) BM 25 (standard version) Class I, Division 1, Groups A,B,C,D ; Ex ia d IIC T4 BM 25 (standard version) Class I, Division 1, Groups C,D ; Ex ia d IIB T4 - PENDING C22.2 No.152 (% LEL only) BM 25A with pump or PID sensor or with infrared sensor for combustible gases detection is not CSA certified