SEMTECH LAMBDAMASTER0 pages

semtech
LAMBDAMASTER
®

SEMTECH LAMBDAMASTER
®

ON-BOARD, IN-USE AIR FUEL RATIO ANALYZER
ON-BOARD, IN-USE AIR FUEL RATIO ANALYZER
Product Specifications:
MEASUREMENTS RANGE

7-100 AFR

ACCURACY

± 0.04% volume of O2

STABILITY

Better than ± 0.02% volume O2 over 2 hour measurement period

RESOLUTION

± 0.01% volume O2

REPEATABILITY

Better than ± 0.02% volume O2. Typically equivalent to better than ±
0.05 AFR, ± 0.003λ (Over range 7-100 AFR)

RESPONSE RISE TIME

Air to Nitrogen; 90% change in less than 100 milliseconds.

EXHAUST SAMPLE FLOW

Approximately 5 liters per minute

WARM UP TIME

60 minutes

TYPICAL CATALYST LIFE

500 hours unleaded fuel, 50 hours leaded fuel

OPERATING TEMPERATURE

0 to 50ºC

RECORDER OUTPUTS (STANDARD)

0 to 1V : 0 to full scale for λ/AFR/O2 ; 0 to 1V : 0 to 10% O2

HC RATIO ADJUSTMENT RANGE

0.00 to 4.00

OC RATIO ADJUSTMENT RANGE

0.00 to 1.00

HEATED SAMPLE LINES

3 meters length standard, 1, 5, 8 or 10 meters options directly
interchangeable

CONNECTING CABLE - CONTROL UNIT TO
SAMPLE HANDLING UNIT

17 way x 6 meter long. 1 to 25 meters; Optional

SAMPLE FILTER

19 mm x 90 mm Whatman extraction thimble

ELECTRICAL POWER REQUIREMENTS

Electronics Module: <200W + 12V DC Cart: 1KW

DIMENSIONS (IN; W x H x D)

Control Unit : 10.5 x 6.5 x 3.5
Transducer : 13.5 x 3.0 x 3.0

WEIGHT

Control Unit : 6.50 lbs
Transducer : 4.25 lbs

The semtech lambdamaster has been redesigned to meet the
needs of automotive engineers through the next decade, understanding that
very fast (less than 100ms) monitoring of air fuel ratio values is critical in the
engine design process.
The lambdamaster offers both compactness and pure simplicity of
operation which is achieved by the integration of a state-of-the-art transducer
that remains with a sophisticated electronic host. The unique transducer
design incorporates three sensors for oxygen, pressure and temperature,
measurement, together with sonic jeweled orifices and filters. The only
connections to the sensor are the vacuum source, and the power and signal
cables. Because of the very fast response requirements, the transducer
operates under vacuum and with exceptionally low dead volume. The
sample flow is nominally 500ccs/min and the speed of response is less than
100ms. Access to the sample filter is quick and simple and involves no major
disassembly of the transducer. User maintenance is only limited to the
routine changes of the filter and periodic cleaning of the sample and bypass
orifices.
The Lambdamaster electronics have been redesigned to take
advantage of the latest advances in electronic component and design, further
reducing size and power requirements, while enhancing the system’s ability
to control, monitor and interact with the transducer, and to calculate oxygen
equivalence ratio and air fuel ratio values. The values of oxygen, pressure
and temperature are updated every 4ms, with each update being an average
of ten readings. The electronics control power to the transducer heater,
maintaining a temperature of 710ºC . The new electronics offer several
communications options, including DAC output, serial/CAN, and RS232.

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

The system operates in a wide variety of automotive applications, i.e. a cold
start testing engine cylinder development, etc.
Last Revision 09/08

Sensors, Inc. ▫ 6812 State Road ▫ Saline, Michigan ▫ USA ▫ +1 (734) 429 – 2100 ▫ www.sensors-inc.com
Sensors Europe GmbH ▫ Feldheider Str. 60 ▫ 40699 Erkrath ▫ Germany ▫ +49-(0)2104-14188-88

Sensors, Inc. ▫ 6812 State Road ▫ Saline, Michigan ▫ USA ▫ +1 (734) 429 – 2100 ▫ www.sensors-inc.com
Sensors Europe GmbH ▫ Feldheider Str. 60 ▫ 40699 Erkrath ▫ Germany ▫ +49-(0)2104-14188-88