| The BGI deltaCal is the first and only volumetric flow calibration/audit device which gives a direct indication of volumetric flow rate, barometric pressure, 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 2 to 20 Lpm range.
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 40 C. The unit is NIST traceable and was designed and manufactured in BGI's ISO 9001 facility. |
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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.
Applications
Calibration and audits of PM2.5 and PM10 samplers to U.S. EPA requirements
May be used on any sampler in the 2 to 20 Lpm range
Usable in field or laboratory
Features
One switch (off/on) operation -- all data displayed on screen
No moving parts
20 hour battery life (4-AA)
Furnished with universal power supply (120/240 VAC)
Download feature with supplied software
deltaCal Specifications
| Flow Rate Range | 2-20 LPM | |
Temp. operational range | -30 C to 40 C | |
Temp. reading range | -40 C to 50 C | |
Baro. pressure range | 400 to 800 mm of Hg |
Dimensions
| Measuring Head | 5 in. Max OD (12.7 cm) X 10 in. high (25.4 cm) | |
Control Module | 8 in. high (20.3 cm) X 4 in. wide (10.15 cm) X 1.7 in. thick (4.32 cm) | |
Combined Weight | 2.2 lbs (1 kg) |
Hand-Held Temperature Probe
| Length of Cable | 33 in (83.8 cm) | |
Length of Probe | 5 in. (12.7 cm) |
Carrying Case
| Dimensions: |
18 in. wide (45.7 cm) X 13 in. high (33 cm) X 7 in. thick (17.8 cm) |
| Weight Complete with Contents: |
5.5 lbs (2.5 kg) |
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