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Calibration ...the key to accurate monitoring

Calibration is key to producing good quality information from any environmental monitor. Our range of calibration devices is designed to provide you with the highest level of confidence when calibrating flows in gas and particle samplers and monitors or concentrations in gas analysers. All devices and are traceable to international primary or transfer standards. They are designed for both field and laboratory use and are robust and reliable in operation.

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Literature

The BGI TetraCal^® is the first and only volumetric continuous flow calibration /audit device which gives a direct indication of volumetric flow rate, standard flow rate, barometric pressure (both mm/Hg & mb), and ambient temperature in one instrument. It was developed for use with all types of air samplers in the 0.1 to 60 lpm range.

It is the only field audit / calibration device which meets the same temperature criteria as EPA and European designated samplers themselves. The temperature range is -30° to 55° C (EPA requires up to 40° C).

Std temperature can be at zero or twenty degrees C. (Please state at order)

The heart of the TetraCal^® is a venturi which is superior to an orifice in that it offers no sharp edges which can be damaged and a 90% recovery of the measurement pressure drop, important when calibrating some forms of speciation samplers or other critical orifice controlled devices. Because flow through the instrument is uninterupted, our graphic software provides a continuous output display of all functions.

The TetraCal covers flows from 0.1 lpm to 30 lpm

The TetraCal Ultra covers flows from 0.1 lpm to 60 lpm (Ideal for European Std Samplers @ 2.3m3/hr)

The BGI DeltaCal is the first and only continuous volumetric flow calibration/audit device which gives a direct indication of volumetric flow rate, standard flow rate, barometric pressure (both mm/Hg & mb), ambient temperature and filter temperature in one instrument. It was developed for use with U.S. EPA PM_2.5 designated samplers and their PM₁₀ derivatives. With an accessory adapter it is usable with any air sampler in the 1.5 to 19.5 Lpm range. The DC100 Euro version has a range of 10-60 Lpm.

It is the only field audit/calibration device which meets the same temperature criteria as the EPA and Europeean designated samplers themselves. The temperature range is -30° to 55° C (EPA requires up to 40° C).

The heart of the deltaCal is a venturi which is superior to an orifice, in that it offers no sharp edges which can be damaged and a 90% recovery of the measurement pressure drop, important when calibrating some forms of speciation samplers or other critical orifice controlled devices. Because flow through the instrument is uninterupted, our BGI Open Freeware graphic software provides a continuous output display of all functions.

BGI Hi-Vol Calibrator is a special version of the DeltaCal which is designed for use with high volume samplers up to 900 lpm flow.

HiVolCal
An Electronic Calibrator for High Volume Air Sampling Instruments

The new direct reading HiVolCal shares the advanced features of all BGI calibrators and completely eliminates the traditional drudgery of performing a manual calibration with its attendant error potential. Two HiVolCal models have been produced, which will cover all conceivable needs in the flow ranges from 1.4 to 54 Cubic feet/minute.

Applications:

High Volume Air Samplers

PUF Samplers

High and Low Flow Rate Impactors

Radiological Air Sampling

The Challenger^� Hand Held Calibrator

BGI has designed the best all around calibrator for verifying and calibrating the properties of Industrial Hygiene Air Sampling Instruments. The Challenger^� is unsurpassed, when it comes to Economy and features. Our readout is in both Actual flow rate and Standard flow rate. Highly accurate Temperature and Barometric Pressure are also provided.

Applications

Industrial Hygiene - Personnel Samplers to Cascade Impactors 1-30 lpm

The Thermo Model 146i is a microprocessor controlled gas calibration system featuring a gas dilution system with optional gas phase titration and permeation systems. The system is able to dilute concentration gas from cylinders and dynamically produce low concentration output gas at over 1000:1 dilution ratio. The optional gas phase titration system (GPT) is used for oxidising NO to NO2 by generating ozone and mixing it with NO. A permeation oven option allows generation of many gases available from permeation devices such as benzene, toluene, xylenes, NO2, SO2 etc.

The MCZ Gas calibration system is a portable gas calibration system featuring dilution, gas phase titration and optional permeation system. An optional zero air generator is also available.

The Ecotech GasCAL is a microprocessor controlled gas calibration system featuring dilution, ozone generation and GPT. It is a cost effective solution for use in air quality monitoring stations and is compatible with AQ WEB data management.

Model 408

The Model 408 NO Calibration Source? is a highly portable source of nitric oxide in the range 0-1000 ppb. The Model 408 may be used to calibrate any nitric oxide monitor, including those based on chemiluminescence. In addition to the calibration of instruments used for air monitoring, an important application is the calibration of nitric oxide breath analyzers such as the Aerocrine NIOX� and NIOX MINO� used for diagnosis and evaluation of asthma patients. The NO Cal Source produces nitric oxide in NO-scrubbed ambient air by photolysis of nitrous oxide provided by small N2O ("Whippit")cartridges or from a lecture bottle. The calibration gas is supplied at an output flow rate of 3 L/min. The instrument may be programmed to output a series of up to 10 NO concentration steps with a chosen time interal.

Model 306

The Model 306 Ozone Calibration Source? is a highly portable ozone transfer standard that may used to calibrate any ozone monitor or sensor. Ozone is generated at any chosen concentration in the range 0-1000 ppb in ozone-scrubbed ambient air at a volumetric flow rate of 3 L/min. No external air source is requried. The instrument may be programmed to output a series of up to 10 ozone concentration steps with a chosen time interal. The Ozone Calibration Source? is provided with a NIST-traceable calibration, and the menu allows the user to calibrate the output to their own reference instrument. This Ozone Cal Source? is particularly useful for calibrating networks of ozone monitors in the field.