Oxygen Monitors

Wessington Cryogenics - Manufacturer of cryogenic vessels for liquid nitrogen, argon, oxygen, helium and CO2
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Oxygen Deficiency Monitors

A wide range of monitors designed for ease of installation and continuous monitoring even in the event of a mains failure. We offer a number of different repeater panels covering every scenario from single monitor to 64 channel requirements. Wessington can offer a full design and installation service for every type of system. The system is modular in design to allow easy build up of different modules to suit every requirement. Systems can also be expanded on site retrospectively if requirements should change.

Oxygen deficiency monitors should not be used for the detection of carbon dioxide gas.

Personal Monitors

GasPod

A personal, compact and extremely robust personal oxygen monitor, with two year long life sensor and large clear LCD display, for continuous monitoring of oxygen concentrations in surrounding air. The GasPod offers dual protection for the user from the potential hazard of oxygen deficiency in the presence of nitrogen, argon and helium together with monitoring of oxygen enrichment.

Applications

The GasPod personal oxygen monitor provides four alarm settings for both oxygen defi ciency and enrichment monitoring. The monitor continuously checks the concentration of oxygen in the surrounding air and provides both visual and audible alarms should the detected concentration of oxygen fall below the pre-set low alarms or above the pre-set high alarm levels. The monitor contains a long life two year oxygen sensor and battery pack that provide a continuous two year operation.

NB Oxygen deficiency monitors must not be used for the detection of carbon dioxide gas.

Key features

> Confidence heartbeat & service indication on LCD display with large clear indication for maximum user visibility

> Simple automated push button calibration in fresh air

> Different audible, visual and vibration indications for two primary warning alarms and two critical alarm settings

> Rugged highly visible enclosure and durable clip to allow user to attach the GasPod securely to garments

> Loud audible alarm for maximum volume

> No requirement for charging. Two year sensor/battery pack which cannot be switched off protecting the user at all times

> Live readings with no sample interval for rapid alarm response times

> Oxygen concentration reading suppressed in alarm condition to avoid user interpretation of safe levels (continuous reading available upon request)

Equipment/Service Options

Certified test gases for precise checking of alarm levels

Annual calibration service with certified test gases and documentation

Monitor exchange service available to ensure continuity of user protection with no loss of cover during service times

Technical Specification

Details

Dimensions H80 x W45 x D33 mm

Weight 200gm approx

Alarm Indications LCD

Audible Alarm 82 dBA at 10cm

Vibrate at 18%

Read-out LCD display to 0.01

Calibration test By push button adjustment in fresh air

Alarms High Alarm (22.5%)*

Critical High Alarm (24%)*

Low Alarm (19%)*

Critical Low Alarm (18%)*

* Alarm levels are factory pre-set and may be varied according to industry best practice levels.

Accessories

Part No Description
GasPod-Ox GasPod Personal Oxygen Monitor
GasPod Service Service/Calibration of GasPod
GasPod/RS Service/Calibration of GasPod including replacement sensor/battery pack
TGKIT18% Test Gas -20L bottle 18% test gas O2 in nitrogen
TGKIT20.8% Test Gas-20L bottle 20.8% test gas O2 in nitrogen
TGKIT22% Test Gas-20L bottle 22% test gas O2 in nitrogen
TGKIT24% Test Gas-20L bottle 24% test gas O2 in nitrogen
FLOWVALVE Flow valve for use with test gas bottles

                        

Service and Support

Design and installation We can advise on how to integrate your existing equipment and/or design systems to suit specific requirements and maximise safety and reliability.

Calibration It is recommended that all products are calibrated at least every 12 months, either on site or in the factory.

Maintenance and refurbishment A maintenance check is advised every 12 months. We can offer a choice of maintenance contracts and will refurbish/upgrade any product, regardless of age or condition.

 

 

Fixed Monitors

QFM-330

SIMPLE BATTERY POWERED MODULAR SYSTEM FOR CONTINUOUS MONITORING OF OXYGEN CONCENTRATIONS WITH NO NECESSITY FOR MAINS CONNECTION

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Base module acts as simple stand-alone unit or in conjunction with a range of remote alarm / display units allowing customisation to suit different locations. System simply ‘plugs’ together to allow easy  connection of alarms and displays to suit every application.

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System is battery powered and fixes easily to a wall with NO NEED for wiring to mains power.

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Base unit cannot be switched off, giving maximum protection to the user.

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All modules have built in visual and audible alarms with two alarm states ‘Low’ and ‘Critically Low’.

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Lightweight, compact and easy to maintain.

DESCRIPTION

The Q-330 Oxygen Monitor and Alarm System combines simple, reliable operation with ease of installation, providing a low cost solution for oxygen monitoring. It continuously monitors the concentration of the oxygen in the air surrounding its sensor and provides both visual and audible alarms when the monitored concentration falls below pre-set levels.

The Q-330 system is designed to be completely modular with the basic building being the QFM-330 monitor. This unit incorporates a sensor which is placed at an appropriate sensing point by simply screwing to the wall (NO ADDITIONAL POWER SUPPLY IS NEEDED). The QFM-330 also includes audible and visual alarms and by simply plugging in additional modules to the base unit, a number of additional facilities are available. The alarm can be repeated at a remote site; a digital display of the oxygen concentration can be added and a switching unit for connection of fans, valves or other alarm systems can be provided simply by selecting the appropriate additional modules. A computer connection can also be included. The repeater units are all battery powered, with the exception of a further mains powered module which incorporates a boosted klaxon and warning beacon, for use in particularly noisy operating environments. Additional modules can be added to the system when initially installed, or at a later date without need for modification of the basic unit.

Any number of base sensing units can be fitted at any site to allow for the need for multiple sensing. The Q-330 by selective use of appropriate modules can provide a low cost solution to every scenario from a simple single monitor to a large monitoring system spread over a number of rooms requiring many monitors and alarms.

OPERATION

Two independent alarm levels are pre-set on the base unit. These provide a ‘Low Alarm’ at 19% and a ‘Critically Low’ alarm should levels fall still further to 18%. Audible alarms are 85dBa at 30cm for all battery operated units. Long life oxygen sensors are employed which will provide twelve months operation in normal use. A replacement sensor pack can be supplied by post without the need to return the unit each year and additional modules can be added, if required, without any modifications to the existing system.

Item

Part Number

Base Sensing Module

QFM-330

Remote Alarm Repeater

QRA-330

Remote Alarm Repeater With LCD Display

QRD-330

Remote Mains Powered Beacon, Audible Alarm, Display and Relay Repeater

QRL-330

Auto Dialer QAD-200
Mains Backup QM12VBAT
Mains Switching Unit QMS-330
Latck Unit QLU-100

Replacement Sensor Pack for Base Unit (Including Battery)

QM-330RS

Replacement Battery Pack for Repeater Units

QR-330B

Interconnecting Cable (10m Standard Length)

QM-330CC

SPECIFICATION

QFM-330 Monitor / Alarm Unit

Dimensions                               

150 (high) x 90 (wide) x 50 (deep) mm

Weight (excl. Cable)     

550g

QRA-330 Monitor / Alarm Unit

Dimensions                               

130 (high) x 105 (wide) x 60 (deep) mm

Weight (excl. Cable)     

450g

QRD-330 Monitor / Alarm Unit With LCD Display

Dimensions                               

130 (high) x 105 (wide) x 60 (deep) mm

Weight (excl. Cable)     

450g

                    

QRD-330                                            QM-330CC

           

 

QRL330/D


Single or multiple channel alarm repeater unit to be fitted outside the entrance door to the monitored room. The panel will repeat all the main monitor alarms and is fitted with an LCD display to show the actual oxygen level in the monitored room. The panel is fitted with relay interfaces to allow connection to extraction fans and BMS monitoring systems.

 

QBA100


Single channel traffic light repeater unit to be located outside the entrance door to the monitored room. The repeater unit will show the user in a very  clear manner (Green/Amber/Red) the status of the room. Unit also includes audible alarm 
 

Test gas for calibration of oxygen monitors available - 18% +/- 0.2%

 

Download Datasheet (pdf)

 

QTS32I


The QTS32I monitors the oxygen concentration in the air surrounding its oxygen sensor. This concentration is displayed on a liquid crystal display. The oxygen sensor is fitted with a 5 metre long lead to allow it to be lowered into confined spaces, ideal to fit into a glove box to monitor for oxygen deficient atmospheres