Put your team's safety into the hands of a proven, rugged, transportable gas monitor

The BM 25: a highly durable unit with a wireless and scalable network

With more than 14,000 on the field, the BM 25 rugged design has proven its durability.

The BM 25 Wireless brings you freedom and flexibility while keeping the standard characteristics of the BM 25.

The BM 25 in a few words:

• Powerful audible alarm (103 dB @ 1m)

• Ultra-bright flashing signal (viewable at 360°)

• 1 to 5 gases simultaneously

• Run time of up to 135 hours in Wireless version

• Resistant to harsh environment

• Easily transportable - less than 15 lbs

• Up to 30 devices per network

• Up to 16 independent networks

• 2.4 GHz frequency

• Up to 0.6 mile line-of-sight range

The network topology used by the BM 25 is a MESH network. In a mesh network all hosts are connected peer-to-peer without central hierarchy, thereby forming a net-like structure. Each node can receive, send and relay data and this avoids having sensitive points, which in case of failure, disrupts the connection of the network. If a node is down, it simply goes through another route.

Mesh topology allows fast and simple deployment, high coverage versatility and high fault tolerance. It significantly reduces installation and operating costs of networks. Adding a BM 25 on an existing network has never been so easy as you just need to turn it on. The BM 25 is automatically added to the network. If a BM 25 goes into gas alarm, all BM25s in the network will report a corresponding alarm.

If a BM 25 does not respond to network communication requests, all other BM 25 units on the network will annunciate a communication fault error and let you know that one of its network member devices is not communicating. In all cases, the local gas detection capability remains effective and each BM 25 will provide local alarm capability in the presence of gas.

If the network is split due to an obstacle placed in the network, it is possible to continue to work as the network will automatically adjust and form two separate networks. When the obstacle is gone, the communication resumes automatically. The two groups merge together to form only one group again. Adding a new BM25 to the network at a smart location also overcomes the obstacle and

restores the communication between the two groups which then merge together.

Data acquisition and configurable relays

The MX 40 controller was designed to centralize the information transmitted by the BM 25 over a wireless network and can display up to 32 measurements in real time. When a BM 25 signals an alarm, the MX 40 also goes into alarm mode and can, for example,

control internal relays and order other monitors to transmit the alarm as well.

The MX 40 can connect to up to 16 BM 25 units on the same wireless network and up to 16 different networks can be used independently. The wireless technology used allows for fast, easy and safe deployment, in addition to easy upgrades for

coverage and high fault tolerance, significantly reducing network installation and operation costs.

The MX 40 has a 2Gb SD memory card and records all data (measurements, alarms, faults) in CSV format. The data can be read directly on the unit or digitally on our File Log Viewer software which can be downloaded free of charge from our website.

MX 40, at a glance:

• Up to 32 gas measurements

• Compatible with 4-20 mA analog detectors, RS-485 Modbus RTU or BM 25 wireless

• Up to 16 BM 25 wireless units

• Up to 64 programmable relays

• LCD display: measurement, channel name, channel status, battery level, wireless signal strength

• LED alarm and fault indicator

• IP 54

• Operating temperatures of -20°C to +70°C

• Up to 1000 meters, open-field, between network nodes

• Up to 4000 meters, open-field, to the furthest network node