The size, capability, and usage can vary greatly between personal gas detectors and portable gas detectors.
However, these distinctions might not always be clearly defined by suppliers which can leave you feeling confused.
Which type and model of detector you choose will depend on your own particular requirements:
- the gas or gases you need to monitor
- the frequency and conditions of usage
- and the level of detail you need in your reporting.
Personal Gas Detectors
As the name suggests, personal gas detectors are small enough to be clipped to the belt or clothing of the user.
Because they’re designed to be worn, they need to be able to withstand the kinds of knocks or damage that come when they’re carried into confined spaces, so you’ll usually find that they have a high IP rating.
To keep everything compact, they’ll probably use a self-contained battery which is sealed inside the detector. When the battery reaches the end of its life, the device itself will need to be replaced.
Personal gas detectors are usually much cheaper than portable detectors but their capabilities and screen displays may be more limited and they don’t always allow for calibration or pump options.
Portable Gas Detectors
These larger and more complex devices can offer a more sophisticated solution both in the number of gases they’re able to trace and their data logging.
Although they’re not as durable or easy to carry as personal gas detectors, they do come equipped with a pump which enables you to test remotely.
They’re also easier to calibrate and you can re-charge or change their batteries without the need to replace the whole unit.
The greater number of sensors on a portable detector means that they can provide a wide variety of different feedback as well as storing much more information.
The software on the Marine Tankscape, for example, provides complete data logging of gas readings with tank identification and vessel location which makes detection, analysis, and action planning easy.
It also enables you to print tamper-proof calibration certificates on-board, further reducing costs and making the process far less complicated.
The best of both
They have the benefits of the personal – small enough to be worn, robust enough to cope with tough conditions, simple one-button operation with audio and visual alarms – but they feature the advantages of a portable gas detector too.
The Marine 4 will detect and display up to four gases simultaneously.
These can be configured depending on your requirements and include a combination of methane, oxygen, carbon monoxide, hydrogen sulphide, and other flammable gases – the Marine 5 gives you one extra should you need it.
Both are compatible with an internal sampling pump which enables you to test remotely and safeguard your crew. This provides flexibility for pre-entry into deep tanks, holds and void spaces and has a wide range of applications in a variety of different industries.
You can even bump test and ensure you’re always compliant by using the ABC Station. This provides you on board self-calibration and produces a tamper-proof calibration certificate that’s acceptable to all Class, Port State Control and Oil Majors.
Martek offers a full consulting service to create a bespoke gas detection package that’s tailor-made to your exact requirements. Get yours now.