Gas Monitors and Repeaters

If gases are used in confined spaces, monitoring equipment should be installed as a matter of course. BOC can supply and install a range of battery and mains powered oxygen and carbon dioxide monitors, alarms and emergency response equipment ensuring the area where gases are used is constantly monitored.

Ensuring that all potential hazards and dangers are recognised and mitigated is key to creating a safe working environment.

Cryogenic gases may produce an immediately hazardous environment through the displacement or enrichment of oxygen levels. Oxygen deficiency can result in an asphyxiation risk, while enrichment can dramatically increase the risk of fire.

Where there is the potential for carbon dioxide levels to be above the agreed exposure limits, protection should be provided against sudden or gradual toxicity.

To help mitigate these risks, we offer a wide range of oxygen deficiency and enrichment monitors, carbon dioxide monitors and a range of repeater units that can be attached to monitors to provide additional warnings of an unsafe atmosphere.

⁠Oxygen monitors help to ensure a working environment is safe. They monitor the oxygen levels in the environment; too little oxygen (oxygen deficiency) there is a danger of asphyxiation or too much oxygen (oxygen enrichment), and there is a danger of severe fires. If a level becomes dangerous, the monitors will emit audible and visual alarms to alert personnel.

A repeater unit does not monitor the oxygen levels, but mimics the alarm on the oxygen monitor. Install a repeater unit outside the room to warn against entry.

Depending on the size of the room and the amount and type of cryogenic liquid stored, BOC has a range of oxygen deficiency and enrichment monitors and repeaters to fit most requirements.

Wall Mounted Oxygen Deficiency Monitors

Monitors	Features	Benefits	Applications	Part No.
One 2 One 02	Combined monitor + repeater package. Audible alarm from both monitor and repeater. LCD on repeater shows % O2	Alarms sound inside and outside the room. No need for wiring or mains connection. No need for any addition parts to set up system – complete package.	Ideal for simple single room /single source monitoring. System cannot be extended.	19312986
Standard Oxygen deficiency monitor	Single monitor unit with sensor and in-built alarm. Alarms when oxygen levels are dangerously low.	Builds a modular system. Can connect to repeater units that switch emergency devices. Can connect to repeater units that switch emergency devices.	The oxygen monitor to use in more complex systems where asphyxiation is possible.	19307505

Replacement Battery & Sensor

Sensor Battery	Description	Part No.
For use with One 2 One	Pack contains replacement sensor and battery	19219529
For use with Standard oxygen deficiency monitor	Pack contains replacement sensor and battery	19310552

Wall Mounted Oxygen Enrichment Monitors

Monitors	Features	Benefits	Applications	Part No.
Standard Oxygen Enrichment Monitor	Single unit with sensor and inbuilt alarm. Alarms when oxygen levels dangerously high.	Builds a modular system. Can connect to up to four repeater units (repeater units connect in series). Can connect to repeater units that switch emergency devices.	For use in confined spaces where oxygen release is possible.	19307729

Wall Mounted Oxygen Enrichment AND Deficiency Monitor

Monitors	Features	Benefits	Applications	Part No.
Standard Oxygen Enrichment and Deficiency Monitor	Single unit with sensor and inbuilt alarm. Detects and alarms at both low and high oxygen levels. Battery Powered.	Can connect to up to four repeater units (repeater units connect in series). Can connect to repeater units that switch emergency devices.	Use this monitor when there is a danger of both oxygen and an asphyxiant gas escaping.	19307506

Wall Mounted Oxygen Repeater Units

A. Repeaters that:
can NOT switch attached electronic devices (e.g. fans/sirens)
CAN attach to one monitor and up to three other repeaters (daisy chain) giving 4 repeaters in total.

Monitors	Features	Benefits	Applications	Part No.
BASIC O2 REPEATER NO LCD DISPLAY	Connects to standard oxygen monitors. Diode and audible alarms. Battery Powered. 10m cable included.	Provides a remote warning alarm. Up to 4 repeaters can connect in series (daisy chain).	Low-cost option for remote alarming away from the source of asphyxiant. Ideal for rooms with multiple entry points.	19208538
DISPLAY O2 REPEATER WITH LCD DISPLAY	Connects to standard oxygen monitors. Diode + audible alarm LCD display showing % O2. Battery powered. 10m cable included.	Visual display of oxygen levels. Provides remote warning alarm. Up to 4 repeaters can connect in series (daisy chain).	For applications where users want the comfort of seeing % O2 levels displayed. Ideal for rooms with multiple entry points.	19307508

Switching Box, Cable, Battery

Sensor Battery	Description	Part No.
BATTERY FOR BASIC O2 REPEATER AND DISPLAY REPEATER		19310551
SWITCHING BOX FOR SWITCHING REPEATERS	Connects repeater to mains powered device	19308796
10 m CABLE	Connects standard monitors to repeaters. Only the multi-monitor repeater comes w/out cables	19308898

BOC's range of personal monitors offers protection for those regularly entering or working in an environment where changes to the composition of the surrounding air are a possibility.

- Alerts users to dangerously high or low oxygen levels (outside preset low and high levels)

- Monitors oxygen concentrations in the surrounding air

- Cannot be switched off

- protecting users at all times

- In alarm condition, LCD display cuts off to prevent subjective user decisions about levels of danger

- Easily calibrated by user in fresh air using LCD

- Belt/pocket clip provided

- Earpiece available for noisy environments

- LCD on top for optimal viewing by user and confirmation of continuous operation

- Warning alarm and low battery (service) alarm sited alongside LCD display for optimal visibility

- Low battery alarm will sound for several days continuously

- Operates continuously for up to 2 years under normal ambient conditions, no need to recharge

- Replacement battery/ sensor pack gives ongoing life at end of the two-year period

- Fully operational in superconductive magnetic fields

- Small compact size - 125mm x 65mm x 23mm

- Lightweight unit - approx. 200g.

Carbon dioxide monitors help to ensure a working environment is safe.  If levels become dangerous, the monitors will alarm.

A repeater unit does not monitor the carbon dioxide levels but mimics the alarm on the carbon dioxide monitor.  Install a repeater unit outside the room to warn against entry.

Depending on the size of the room and the amount and type of cryogenic liquid stored, BOC Cryospeed has a range of carbon dioxide monitors and repeaters to fit most requirements.

Wall Mounted Carbon Dioxide Monitors

Monitors	Features	Benefits	Applications	Part No.
One 2 One CO2	Combined monitor + repeater package. LCD on repeater shows % CO2. 10m connecting cable.	Alarms sound inside and outside the room. No need for any additional parts to set up the system – complete package.	Ideal for simple single room / single source monitoring. System cannot be extended	19312987
Standard Carbon Dioxide Monitor	Single monitor unit with sensor and inbuilt alarm. Alarms when carbon dioxide levels are dangerously high.	Builds a modular system. Can connect to up to four repeater units (repeater units connect in series). Can connect to repeater units that switch emergency devices.	The carbon dioxide monitor to use in more complex systems	19307504

Optional Battery Backup for Standard CO₂ Monitor

Monitor	Description	Part No.
Battery Backup – Standard CO2 monitor	Gives approximately 4 days backup if power fails	19308797

Wall Mounted Carbon Dioxide Repeaters

A. Repeaters that attach to One CO₂ monitor, plus other repeaters
B. Repeater that attaches up to 4 CO₂ monitors and can switch devices

A. Repeater that:
CAN attach to one monitor and up to three other repeaters (daisy chain) giving 4 repeaters in total

 

Monitors	Features	Benefits	Applications	Part No.
STANDARD CO2 REPEATER	Diode and audible alarm, battery powered, 10m cable included.	Remote CO2 warning alarm, Up to 4 repeaters can connect in series (daisy chain)	Ideal for rooms with multiple entry points	19308799

B. Repeater that:
Connects to up to 4 standard CO₂ deficiency monitors
CAN switch attached devices (e.g. fans/sirens) (need to buy switching box)

Monitors	Features	Benefits	Applications	Part No.
MULTI-CO2 MONITOR SWITCHING REPEATER	Connects up to four standard carbon dioxide monitors, mains powered, cable NOT included	A central repeater for multiple units has the capacity to switch external devices (switching box sold separately)	Use where more than one source of CO2 is present or where multiple locations are monitored, Ideal where additional emergency responses are required such as fans or sirens	19308800

Switching Box, Cable, Battery

Sensor Battery	Description	Part No.
REPLACEMENT BATTERY FOR STANDARD CO2 REPEATER	Same part as for 02 repeater	19310551
SWITCHING BOX FOR SWITCHING REPEATER	Connects repeater to mains powered device	19308796
10 m CABLE CO2	Connects standard monitors to repeaters. Only the multi-monitor repeater comes without cables	19308801

Siren and Beacon Alert

Monitors	Features	Benefits	Applications	Part No.
SIREN BEACON	Loud siren and beacon alarm. Can be used with all O2 or CO2 switching repeaters. Attaches to switching repeaters. 5m cable supplied.	110 dB siren cuts through background noise	Use in noisy situations	19308798