Delta Cal - FRM Calibrator

DeltaCal
Flow, Pressure & Temperature
Calibration Device

The BGI Delta Cal is the only audit device that provides 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 PM10 derivatives. Adapters make the device suitable with any air sampler operating in the 2 to 20 lpm range.

The Delta Cal provides volumetric flow information by measuring the pressure drop caused by air traveling through a venturi. As the flow rate through the venturi increases, the pressure drop increases. A desirable feature of the venturi is that most of the pressure drop created by the instrument is recovered in the expansion section of the venturi. Therefore, measurements are made at nearly the true operating conditions of the sampler.

The Delta Cal is the only field audit device that meets the same temperature criteria as the EPA designated samplers, which must operate between -30° and 40° C.

Standard DeltaCal Unit Includes:

Control Unit with On Screen Display
FRM Inlet Head
Air Temperature Sensor
Filter Temperature Probe
Transport Case
Delta Cal Software
AC Power Adapter

All functions of the Delta Cal are NIST traceable and the device is manufactured in to ISO 9001 standards.