SEMTECH®-FSFilter System

The SEMTECH Filter System is a portable gravimetric sampling system used to measure the mass of exhaust parti culates. It can be used either for in-use applicati ons or in test cells, while meeti ng requirements of US EPA 1065.

The system consists of a cyclonic separator to remove coarse parti cles, three traditi onal 47 mm fi lter holders, a mass fl ow controller to adjust fi lter face velocity, a high capacity vacuum pump, pneumati c ball valves to engage fi lters, downstream isolati on solenoids, and an opti onal heated sample line. All wett ed surfaces are stainless-steel, heated to 47°C. The system can be operated from the built-in interface panel, or opti onally through the SEMTECH-DS host soft ware where sampling can be automated based on NTE signals, engine RPM, exhaust fl ow rate, or other user-defi ned parameters.

Emissions Measurement

Solutions

2

SEMTECH-FSFilter System

Optional SEMTECH-DS Integration

When integrated with the SEMTECH-DS, Sensors’ gaseous emissions analyzer, user-defined automated sampling configurations are available:

Automated Sampling: Sampling can be activated on a given filter automatically when a certain criteria is met. For example, all filters can be set to sample only during NTE events, and toggle to bypass when non-NTE operation occurs.

Automated Filter Limits: The system will automatically disable filters when either desired sample duration or filter loading has been achieved. Filter loading is determined based on the pressure drop across the filters.

Remote Use: With the PC based software, the current temperature and flow conditions can be set and monitored remotely from the unit.

System Features and Benefits

1065 Compliant: The SEMTECH Filter System is designed to meet the sampling requirements and recommendations of CFR40 part 1065 for both in-use and test cell applications.

Cyclonic Separator: The exhaust sample first passes through a heated cyclonic separator to remove coarse elements prior to passing through the filter elements.

Three Filter Paths: The system contains three, 47mm diameter filter holders. The system can be set to automatically switch between these filters and the bypass line, in accordance with pre-set test conditions. Pneumatic ball valves and downstream isolation solenoids are used to select the desired flow path.

Low Maintenance: The unit was designed with an easy access door to remove the filter holders and replace the filter elements. Other access panels enable easy removal of the cyclone and fuse panel.

Easy Operation: The built-in display panel shows all of the information needed to manually operate the unit. Temperature settings, flow settings and status indicators are all clearly defined and user configurable.

Bypass Line

Filter System Section View

Pump

Initial Stage Cyclone

Filter Access Door

Filters

User Interface with DS Integration Software

Opti onal Accessories

Power Supply: A 12VDC supply with either 120VAC or 220VAC input is available, either as a rack mount or a portable unit.

Communicati ons Cable: Serial cable to allow remote control of the unit from a laptop, or through the SEMTECH-DS.

Heated Line: A custom designed, self regulati ng, heated sample line carries the sample either directly from the exhaust, or from a diluti on system, to the cyclone inlet. The 1/2” stainless steel line is powered from the Filter System.

3

SEMTECH-FSFilter System

Rear Panel Connecti ons

The Technology

The SEMTECH Filter System is a traditi onal, EPA 1065 compliant, gravimetric sample system designed to collect exhaust parti culates from a diluted sample on pre-weighed fi lters. Post-sample fi lter weights, fi lter fl ow rates, and measured diluti on rati o (from SEMTECH MPS or other diluti on system) determine the tailpipe PM rate. A vacuum pump pulls the diluted exhaust sample (at ambient pressure) through the cyclonic separator, where coarse parti culates are removed from the sample. HEPA fi ltered make-up air is added in order to maintain desired fi lter face velocity without pulling excess vacuum on the diluted sample. The sample is then pulled into a distributi on manifold, where the sample is then fed into one of the three fi lter holders or the bypass. Pneumati c ball valves and downstream isolati on solenoids determine the sample path, which can be controlled manually or automati cally based on preset sampling criteria.mass collected.

User Support

As with all SEMTECH products, the Filter System comes with a wide range of customer support. Sensors’ Remote Support, powered by WebEx, enables our trained technicians to view your SEMTECH unit in real-ti me, to help answer your questi ons, diagnose issues, and evaluate data, without requiring any additi onal soft ware. The SEMTECH Users’ Network, SUN, has a forum for users to share insights on best practi ces for in-use emissions testi ng, and to stay up to date with the latest soft ware releases.

Filter Holders are Easily Removed for Filter Replacement

Front Panel Display

Sensors, Inc. • 6812 State Rd. • Saline, Michigan 48176 • PH:(734) 429-2100 • FX:(734) 429-4080 • www.sensors-inc.comSensors Europe GmbH • Feldheider Str. 60 • 40699 Erkrath • Germany • PH: +49 (0) 2104-14188-0 • FX: +49 (0) 2104-14188-14

NOTE: Specifications are subject to change without notice. While due caution has been exercised in the production of this document, possible errors and omissions can occur.

R 10/09

4

SEMTECH-FSFilter System

System Specifications:Ambient Conditions: 0°C to 45°C, non-condensingStandard 0perating temperature: 47°C ±5°CStorage temperature: -40°C to 60°CSample flow rate (internal pump): Quartz or glass fibers: 10 - 40 SLPM Teflo fibers: 10 - 30 SLPMWarm up time: 40 minutes at 20°C ambientPower Requirement: 12VDC nominal 30A during warm-up, 15A at steady stateWeight: 48 kgCommunications: RS322 and CAN

Cyclone Specifications:Material: Teflon coated aluminumDimensions: 16” x 13 7/8” x 3 1/2”Inlet: 1 1/2” ODWeight: 2.7 kg

Filter Specifications:Element diameter: 47mmHolder material: 304 stainless steelHeight: 108 mmMax outer diameter: 73 mmInlet and outlet diameter: 1/2” FNPTWeight: 1 kg

360 mm

800

mm

340 mm