An Integrated Measurement Approach
The Streamline Pro MultiCal System provides an integrated approach for assuring the quality of data generated ambient air monitors and samplers. It is a battery-operated, handheld device with internal data storage that displays audit/calibration data directly on its screen. The user can select the unit of measure in which values are displayed.
The Streamline Pro unit is manufactured exclusively for R&P by Chinook Engineering of Sheridan, Wyoming. It builds upon the accurate and stable flow rate capabilities for which the very popular original Streamline FTS Flow Transfer Standard is known. The MultiCal system uses the same patented, orifice-based flow measurement configuration that ensures consistent performance over a wide range of ambient temperatures and wind conditions.
The MultiCal system's design makes it an ideal tool both in the field and laboratories.
The Streamline Pro unit simultaneously generates the following NIST-traceable measurements for the quality assurance of data generated by ambient quality monitoring instrumentation:
- Flow rate (0.9 to 19 l/min)
- Ambient temperature (-25 to +45 deg C)
- Barometric pressure (0.65 to 1.1 atmospheres)
- External temperature (optional, -25 to +40 deg C)
The Streamline Pro audit/calibration device is microprocessor based, allowing for simple menu-based operation, internal storage of time-stamped measurement results, and nonvolatile storage of internal calibration constants. Its flow rate range of 0.9 to 19 l/min permits its use with a wide variety of particulate matter (PM) samplers and continuous monitors, as well as ambient gas analyzers. Supported instruments include R&P's TEOM Ambient Particulate Monitor and Partisol Family of Air Samplers.
Careful characterization of the unit's performance during its design and development ensures that its results are highly linear over the measurement ranges indicated above. This is shown by data generated by the unit for barometric pressure, flow rate and temperature.
The Streamline Pro unit's highly accurate results are ensured by multi-point factory calibration procedures carried out at the manufacturing facility. Multi-point factory calibration of the system's flow rate measurement is performed on a NIST-traceable critical Venturi flow bench that Chinook Engineering developed in close consultation with NIST. Chinook's state-of-the-art flow metrology facility ensures that each Streamline device provides NIST-traceable flow measurements to primary mass and time standards. The other parameters supported by the unit are certified using high precision reference standards.
Flow Measurement Adapter Kit
In its default configuration, the flow measurement cell of the Streamline Pro unit fits over a tube whose outside diameter is 1 1/4". An optional adapter kit is available for the connection of the system's flow measurement cell with other tubing diameters or using a barbed hose fitting adapter to flexible tubing (see photo at right).
Patented flow Measurement System
The Streamline Pro MultiCal System contains a Venturi-type flow meter that determines the actual volumetric flow rate based upon the pressure drop across its patented restriction. Using this pressure drop, as well as the local temperature and atmospheric pressure, the
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