14
Gas Detection Mobile Docking Station Kit
Industrial Scientific (USA), the global specialists in Gas Detection as a Service, announced recently that the iNet DS mobile kit is now available.
The iNet DS mobile kit, which includes a carrying case, 3G/4G wireless router, 12V truck charging cable and Ethernet cable, enables remote maintenance of portable gas detectors using the iNet DS docking station. It is the ideal solution for gas detection instrument users who typically work in mobile environments.
The mobile kit is designed to contain the docking station while connected to a gas cylinder and wireless router. The router enables the docking station to be connected to the Internet allowing for data uploading to iNet following automatic calibration, recordkeeping, diagnostics, firmware upgrades and battery recharging.
iNet, Industrial Scientific’s Gas Detection as a Service solution, is a software-based service that solves common challenges faced in gas detection programs related to the maintenance of gas detector fleets and the lack of visibility into instrument alarms, exposure and usage. Today, there are more than 70,000 gas monitors operating on iNet at worksites around the world.
Reader Reply Card No. 39
Report on Diesel Fumes puts Sharp Focus on need for Effective Monitoring
The World Health Organisation this month reclassified the dangers of diesel exhaust fumes, upgrading the risk from probably carcinogenic to a definite cause of cancer. The WHO report is based on the findings of research on workers in high risk areas, and puts a sharp focus on the need for effective monitoring in industries such as mining, rail, transportation, construction, power generation and others where there is a reliance on diesel as a source of fuel.
To meet this need, Ion Science (UK) offers a wide range of instruments offering the industry’s fastest, most accurate and most reliable detection of hazardous compounds, helping to highlight any risk that might exist in the workplace as part of an effective industrial hygiene programme.
The reclassification moves diesel exhaust fumes up from group 2A of IARC’s five-step cancer risk gradation to group 1, the highest level possible, putting it in the same group as compounds such as benzene, ethylene oxide, vinyl chloride and over 100 other chemicals and agents known to cause cancer.
Any location where diesel exhaust fumes are thought likely or possible to be a problem can be regularly monitored with either hand-held or fixed-in-place detectors that can send the information directly to a control system. A survey might identify possible sources of high emissions that should be monitored with hand-held instruments. Further, the use of hand-held instruments should be used regularly to sweep for ‘hot spots’ or high concentrations.
Finally, there are wearable detectors that monitor the breathing space of the individual employee, measuring the levels of harmful compounds that the individual is exposed to as he or she moves around the workplace.
Based near Cambridge, Ion Science offers a range of fixed-in-place, hand-held and wearable monitoring instruments based on photoionisation detection (PID) technology. PID has been at the front line of efforts to detect hazardous compounds since the 1970s, and Ion Science has been a leader in its development since its foundation in 1989. Today the company offers a wide range of gas detection products and is the largest PID manufacturer on the market.
BX171 Portable Gas Detector No charging or
re-calibration required
• For CO, H2S or O2 only. • Low cost of ownership
• Simple one-button operation. • Audio alarm of more than 80dB. • 6000 working hours with 3V Lithium battery IP66 design • Comply with ATEX • Confidence beep
BX171 has ATEX Certification
No.12 ATEX 1040
The company’s PID sensor technology has been independently verified as best performing for speed, accuracy and humidity resistant operation. Its patented Fence Electrode Technology and Anti-contamination mean instruments are un-affected by humid and challenging environments providing accurate, reliable results and extended run time in the field. Ion Science instruments are capable of detecting hazardous gas concentrations from just a few parts per billion (ppb) right up to 20,000 parts per million (ppm) – a range unmatched by other PID gas detectors on the market.
The Ion Science range of products for detecting diesel exhaust fumes include the recently launched Cub personal PID monitor, along with hand-held PID instruments PhoCheck Tiger and Tiger Select and the fixed TVOC detector. All are characterised by their ease of use, accuracy and reliability.
No.169 xuesong road, National Hi&Tech Zone, 450001 Zhengzhou,China Tel: 86-371-67169080
Fax: 86-371-67169090 Email:
sales@hwsensor.com or
hwsensor@gmail.com Web:
www.hwsensor.com
Reader Reply Card No. 40
Industrial (or occupational) hygiene places the emphasis on prevention of ill health from work through recognising, evaluating and controlling the risks. Now that diesel exhaust fumes have finally been defined as posing a genuine risk to health as a definite cause of lung cancer, at-risk industries must surely put a renewed focus on industrial hygiene, and develop effective plans for minimising exposure to this hazard.
Reader Reply Card No. 41 Reader Reply Card No. Figure 1: Effect of temperature at 0% O2
LuminOx Fluorescent Optical Oxygen Sensor Is A Breath of Fresh Air in the Oxygen Sensing Industry
Electrochemical sensors are sensitive to temperature and therefore require external compensation, using hardware or software methods. LuminOx from SST Sensing (UK) contains built-in temperature compensation, so removes this requirement. Not only does LuminOx measure the temperature, but it’s two-wire communications port allows the gas temperature to be measured along with oxygen by the host – an added bonus!
The graphs below show how LuminOx’s output remains constant while the gas temperature is changing. Electrochemical sensors, tested at the same time, exhibit significant errors as a result of the changing temperature.
The three sensors were supplied with various fixed gas concentrations and the temperature was varied between -20 and +50o and 20%O2
: C. The graphs below show the results for 0%O2
Figure 2: Effect of temperature at 20% O2
LuminOx clearly has significantly less sensitivity to temperature when compared to electrochemical sensors.
Electrochemical sensors are also susceptible to rapid changes in temperature. Again, LuminOx is less sensitive to this effect due to its built-in temperature compensation.
The three sensors were supplied with 21% O2 and the gas
temperature was changed as rapidly as possible, using a heat exchanger, between 15 and 40o
C. The blue line in the
graph below is the gas temperature measured inside the test enclosure. The temperature is read on the axis to the right of the graph. The O2 measured on the left axis.
% reported by the three sensors is
Figure 3: Effect of Temperature Changes at 21% O2
Although all the sensors have some sensitivity to temperature changes, LuminOx is significantly less sensitive to them.
42
IET September / October 2012
www.envirotech-online.com
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