Technical Description
General Specification
Background


Range:
This Any size engine, regardless of RPM or stack size.

Sample Time:
Time 2 to 5 minutes per filter for single filter/mode testing on a 0.1 g/hp-hr 8-mode cycle-weighted emissions engine.

Input Power:
110 or 220 VAC, 50/60 Hz (specify with order). Dilution Air Supply 90 PSI. 4 SCFM (6 Bar, 7 m3/hr).

Dilution Air Supply:
90 PSI. 4 SCFM (6 Bar, 7 m3/hr).

Measurement Repeatability:
Typically better than ± 3% with dilution ratios of 10:1 or less depending on engine performance, filter loading and engine operating mode).

Correlation with Full Dilution:
Meets ISO correlation requirements; (see ISO 16183 information below).

Transient Testing Capabilities:
The Transient Dilution Airflow Control (TDAC™) system (patented) monitors voltage from the engine intake air and fuel mass flow measurement systems. Accurate data is gained using this signal. Correlation quality is dependent on the speed of response of the engine exhaust flow measurement).

Communications:
TCP/IP and Serial communications are available in both REMOTE and LOCAL mode; allows user to operate the system from a remote location via an Ethernet connection.

Weight:
600 lbs. (275 kg).

Dimensions:
24" W x 36" D x 72" H (60 cm W x 90 cm D x 2m H) Sampling Probes A single sampling probe is included with each system.

Sampling Probes:
A single sampling probe is included with each system. Sampling probes are available for any size engine exhaust stack or specialized application. Sampling probes are available for any size engine exhaust stack or specialized application.

REQUIREMENTS	ISO 16183	BG-3
System Response Time:	=< 0.5 second	0.3 second
Input Method of Exhaust Gas
1.Direct method Any of the 4 mass flow
2.Air & fuel measurement methods@(Gexhw = Gairw + Gfuel)
3.Tracer measurement method
4.Air flow and air to fuel ratio measurement method
Proportionality: Correlation coefficient R2 of the linear regression between Gp,i and GEXH,i >0.98 shall not less than 0.9. The standard error of estimate of Gp,i on GEXH,i shall not exceed 5% of Gp maximum. 1-2% Gp intercept of the regression line shall not exceed +/- 2% of Gp maximum.	Must Meet requirement	Meets requirement
Filter size: Particulate filters must have a minimum diameter of 47mm. Larger diameter filters are acceptable.	Must Meet requirement	47mm, 70mm
Primary and back-up filters: The diluted exhaust shall be sampled by a pair of filters placed in series ( one primary and one secondary) during the test sequence	Must Meet requirement	Meets requirement
Filter face velocity: A gas face velocity through the filter of 35 to 100 cm/s Meets requirement The pressure drop increase between the beginning and the end of the test shall be no more than 25kPa	Must Meet requirement	Meets requirement
Filter loading: Minimum filter loading shall be 0.25 mg for filter size of 70mm and below.	Must Meet requirement	Meets requirement
Accuracy of Gtotw:	+/- 2%	+/- 2% or less
Accuracy of Gdilw:	+/- 2%	+/- 2% or less
Additional specifications: All parts of the dilution system in contact with raw and diluted exhaust gas must be designed to minimize deposition or alteration of the particulates	Must Meet requirement	Meets requirement