ECM BB100, Инструкция по эксплуатации, Страница: 5 / 37

Introduction
The BB100
The BB100 Engine Blow-by Meter is compact, versatile, and rugged instrument for spot and
continuous blow-by measurement of spark ignition and diesel engines. The BB100 is suitable
for use in dynamometer cells, in-vehicle, and as a portable tester.
The BB100 operates on the vortex shedding principle. Vortex shedding flowmeters use
ultrasonic transducers and have no moving parts. The most important feature of these meters is
that they give accurate volume flowrate readings over a wide range of blow-by temperature,
pressure, gas composition, and viscosity. This a fundamental property of the measurement
technology. Other measurement technologies such as orifice-based techniques give large errors
(ex. 10% or greater) if not corrected for blow-by temperature, pressure, composition, and
viscosity.
Features of the BB100 include:
•
Operates as a volume flowmeter or volume totalizer
•
Integrated, easy-to-read display
•
Displays in LPM (liters/min), CFM (cubic feet/min), Total Liters, or Total Cubic Ft.
•
Wide range of operation: LPM: 4 to 150 liters/min
CFM: 0.15 to 5.4 ft
3
/min
Liters Total: 1000 liters
Ft
3
Total: 100 ft
3
•
Insensitive to blow-by temperature, pressure, gas composition, and viscosity
•
High accuracy in a difficult environment
•
Low flow restriction
•
Analog output
•
Bi-directional RS-232 control
•
Programmable update rate, analog output range, and averaging period
•
Integrated dampers and oil separators
•
Compact
•
Rugged
•
11 to 28 VDC operation
Introduction
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