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.
The deltaCal® is available in 3 flow rate ranges…1.5 to 19.5 Lpm (DC1); 1.0 to 60.0 Lpm (DC100); 0.8 to 3.5 Lpm (DC200).
Calibration and audits of PM2.5 and PM10 samplers to U.S. EPA requirements
May be used on any sampler in the 1.5 to 19.5 Lpm range
Usable in field or laboratory
Calibration of European PM10 samplers operating at 38.4 Lpm
Calibration of 50 Lpm DICOT samplers
Calibration of standard DICOT samplers.
Calibration of lower flow rate samplers (such as those samplers that have settings for: 1.0, 1.2, 2.0, or 3.0 Lpm flow rates)
Designed to go anyplace, indoors or out. From the top a 15,000 ft mountain to a 55° C desert or a -30° C snow field. Our first principle, Venturi calibrators will operate for 20 continuous hours on 4 AA cells. We are pulsation free, accurate to less than 0.75% of the flow rate reading, NIST traceable and designed, built and calibrated in an ISO 9001:2008 facility. We have always built our calibrators to these standards. Now our output screens show both Actual and Standard flow rates. This feature is applicable to every calibrator that we have ever produced and will be applied, during a recalibration, to every instrument at no charge.
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 PM2.5 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 version has a range of 10-60 Lpm. The DC200 veriosn has a range of 0.8-3.5 Lpm. Typical screens are shown below on the left.
It is the only field audit/calibration device which meets the same temperature criteria as the EPA 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 graphic software provides a continuous output display of all functions.
One switch (off/on) operation -- all data displayed on screen
No moving parts, completely silent.
20 hour battery life (4-AA)
Furnished with universal power supply (120/240 VAC)