New Photo Ionisation Technology for Confined Space Entry
Entry into confined spaced or areas where explosive or toxic gases
may be present demand that a gas monitor is worn. Many areas
present the same predictable issues regarding those gases that
need to be measured, usually explosive gas including LEL (Lower
Explosive Limits – Methane, Ethane etc.), Oxygen depletion,
Carbon Monoxide and Hydrogen Sulphide.
However, frequently solvents or Volatile Organic Compounds
(VOCs) are present and a mixture of standard sensor technology
coupled with PID technology can accommodate a much wider range
of gas detection and produce higher levels of safety.
Miniature Photo Ionisation Detection
The latest innovation in measuring VOCs is the development of miniature
PID sensors. A Photo Ionisation Detector in the shell of a Series 4 / ‘A’ Class
gas sensor enabling PID technology to be deployed across a wide range of
gas detection technology both portable and fixed. Incorporating the patented
Fence Electrode Technology to increase resistance to humidity and
contamination this sensor is now increasingly being used in portable
confined space gas detectors such as the innovative PHD6
instrument from Shawcity.
PHD6 Portable Gas Detector
Incorporating VOC & IR Sensing Technolog
With the capability to measure up to 6 gases in one compact personal
monitor the PHD6 gives unrivalled protection. There are 18 different
sensor options making it the most configurable gas detector on the market.
A mixture of sensor technology can be accommodated. A Photo-ionisation
Detector (PID) is available for VOC measurement, Infra-red sensors
for CO2 and Methane, conventional LEL, Oxygen plus 15 different toxic
sensors.
The PHD6 is tough and easy to handle. With rechargeable
li-on batteries or interchangeable alkaline batteries it can operate for 24 hours.
Pre-entry testing is easy with the PHD6 and a manual sample draw kit or
an optional pump is available. Audible alarms are unlike anything you have
heard from a gas monitor and rated at 92dB. Visual alarms are also highly
visible. For increased peace of mind an optional docking station for instrument
testing and calibration is available. This means it is very easy and fast to
check the performance of the PHD6 every time you use it and a record
of testing is automatically archived to your PC.
Mini PID technology also offers a more accurate and wider detection
range when incorporated into standard PID instruments. Many users
need a very sensitive instrument with parts per billion measurement.
Others want to identify high levels of VOCs sometimes up to 20,000 ppm
(parts per million) or 2% volume. The Mini PID’s increased range means
that it is now possible to consolidate all this in one instrument to meet
more demanding total VOC monitoring requirements.
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