AIRMONITORING 27
New air sampling offer can help you protect your workforce from hazardous exposure
According to estimates, somewhere in the world, a worker is killed every 30 seconds because of exposure to hazardous substances. Every employer is duty-bound to monitor for potentially hazardous substances to protect their staff. Casella is currently including a free Flow Detective™ Plus calibrator with every VAPex Pro or Apex2 Plus/ Pro kit they sell to help their customers improve air sampling accuracy and traceability and, as a result, safeguard the workforce until September 30th.
Casella’s Flow Detective™ Plus is an electronic air fl ow meter calibrator that measures the fl ow of air in sampling pumps to within 2% accuracy. This rugged instrument is capable of calibrating within airfl ows of 20mL/min to 5,000 mL/min to ensure correct fl ow. The Flow Detective™ Plus offers compatibility with Casella’s pioneering Airwave App as well as Bluetooth connectivity, calibration data can be sent via email, which improves traceability and the pump calibration process.
The Flow Detective™ Plus not only detects air fl ow, it is also the fi rst calibrator on the market capable of measuring pulsation; it indicates instances of air fl ow pulsation exceeding 10% for total confi dence in the integrity of samples. Operators of Casella’s Apex2 or VAPex air sampling pumps combined with the Flow Detective™ Plus can perform closed-loop automatic calibration, eliminating the need for manual input, which saves a considerable amount of time when calibrating pumps.
Casella’s VAPex Pro was created for low fl ow sampling of vapours and gases in working environments, with a wide fl ow range of 20mL-500mL/min, this personal sampling pump offers excellent back pressure capability. If working with fl ows of up to 5L/min, the Apex2 medium fl ow air sampling pump is built to monitor workplace dust levels therefore helping to protect personnel from long latency health problems as a result of occupational exposures.
More information online:
ilmt.co/PL/P9EO For More Info, email:
Rapid, precise and reliable safety monitoring for ATEX Zone 20 in potentially explosive dust atmospheres
email: For More Info, email: email:
56130pr@reply-direct.com
A new approach and highly innovative solution to reliable and accurate gas dilution
Dilution is effectively all about fl ow ratio: to ensure maximum accuracy, selecting nozzles or calculating the linearity correcting polynomial coeffi cients, fl ows must be measured. The most common problem with diluters is that in high ratios the fl ow of the gas to be diluted and the fl ow of the diluting gas are very different to each other. Therefore, measuring the smallest fl ow with the same meter used for the highest fl ow results in very low resolution and therefore inaccurate dilutions. Using different meters creates different chain tracing errors which is even worse.
With Be.T.A. Strumentazione’s BetaCAP series of precision diluters, different fl ows are obtained by grouping in parallel a different number of equal capillaries. The capillaries are measured one by one with high resolution and the fl ow of the groups is not measured but calculated by adding the individual capillary fl ows. The relative accuracy of the sum is considerably better than the accuracy of fl ow measurement on the single capillary.
To provide an electronic pressure control across capillaries Be.T.A. Strumentazione use pressure meters. In comparison to fl ow meters they have a lot of advantages in term of stability, linearity and reliability. However, the main advantage of electronic pressure control comes from knowing and using the physics of capillaries setting calculated set-points to adjust pressure, differential pressure and viscosity relationships. Traditionally, when capillaries or critical nozzles are used the diluter operates “step by step”, individual capillaries or nozzles combinations give individual dilution ratios.
MFCs diluters are based upon linear fl ow control, dilutions are linearly changing in a continuous dilution range.
The BetaCAP product uses discrete components (capillaries) to produce a continuous dilution range. Capillary combinations give the dilution steps, and those steps are moved by changing the pressures applied to capillaries complying with their physical laws.
To calculate the viscosity of a gas mixture many empirical formulas are available in which the physical parameters of the components must be placed: one of them is the component viscosity, that we may fi nd in literature tables (each fl uid chemical component has a viscosity)
This calculation is one of the more widely used, because it solves many problems both in fl uid dynamic and in medicine (blood circulation) and it therefore enables accurate results.
Other technologies (MFCs) are infl uenced by the calorifi c power of the fl uid, as well as by the heat transfer coeffi cient and other factors such as the design of the fl ow measuring sensor.
The BetaCAP is built by manifold, using two solid blocks and constructing all the pneumatic circuit by crossing holes within the solid. This construction creates a very compact and highly rugged unit that is isothermal, with low leakage levels and minimal dead volumes.
More information online:
ilmt.co/PL/mx3p For More Info, email:
email: For More Info, email: email:
Enotec’s SILOTEC® 8000 performs quick,
effi cient and precise analysis of oxygen, carbon monoxide and methane for ATEX zone 20 in silos and other dusty atmospheres with a high risk of explosion
The simultaneous measurement of O2 and
COe enables smouldering fi res to be detected potentially saving human life as well as property. The SILOTEC 8000 is completely maintenance free and has the requisite IP rating for uncomplicated installation on silo roofs. Quick in situ measurements eliminate the need for a slow, high-maintenance extractive analyser system.
For more information:
ilmt.co/PL/ArqA For More Info, email:
email: For More Info, email: email:
55862pr@reply-direct.com
Be.T.A.Strumentazione Srl tel. +39 0321 887712 • email:
info@beta-strumentazione.it www.beta-strumentazione.it/en/betacap-precision-diluters-their-strengths/
Be.T.A.Strumentazione Advert 2 (Revised May).indd 1 Distributors wanted 26/05/2021 17:09
WWW.ENVIROTECH-ONLINE.COM IET SEPTEMBER/OCTOBER 2021
55388pr@reply-direct.com
Book a free 10 day trial - See here for more details
Market leading
GAS DIVIDERS complying with EN14181 QAL2
Equal Capillaries Technique with Electronic Pressures Control outperforms other approaches
Book a free 10 day trial - email
roberto@beta-strumentazione.it for more information
www.beta-strumentazione.it
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