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Summary of Contents for ECM Lambda PRO
- Page 1 ™ Lambda Air-Fuel Ratio Meter Instruction Manual 7/02 Part Number 1200A-5...
- Page 2 No part of this manual may be photocopied or reproduced in any form without prior written consent from ECM: ENGINE CONTROL AND MONITORING. Information and specifications subject to change without notice. Lambda Pro is a trademark of ECM: ENGINE CONTROL AND MONITORING. Printed in the United States of America.
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Page 3: Table Of Contents
Table of Contents Introduction Lambda Pro Lambda Pro Components List Important Operation Notes How to Use Hook-up and Simulated O Output Selecting AFR Units Maximum and Minimum AFR Recording Analog Output Calibration Application Notes Specifications and Limits Measurements and Accuracy... -
Page 5: Introduction
• 0 to 5 volt linearized output for use with data acquisition systems • 11 to 28 VDC operation Lambda Pro was designed to be to fuel systems what a timing light is to ignition systems: a valuable and easy-to-use tool. -
Page 6: Lambda Pro Components List
Lambda Pro Components List The following items are included with the Lambda Pro package: Item No. Description Part Number Lambda Pro 1200A Lambda Sensor 1200A-1 Wiring Adapter , 6” 1200A-2 Instrument Wiring Harness, 13’ 1200A-3A 12VDC Battery Power Clamp-on Adapter , 1.5’... -
Page 7: Important Operation Notes
2. Do not operate an engine for more than three minutes with the Lambda sensor in the exhaust and Lambda Pro's power off. If the sensor is off in a running engine, soot and water will condense in the sensor and may reduce its sensitivity. -
Page 9: How To Use
The harness is connected to the wiring adapter which in turn is connected to Lambda Pro. The wiring adapter should be left attached to Lambda Pro. -
Page 10: Selecting Afr Units
O 2 sensor outputs under all operating conditions. Selecting AFR Units The default units of Lambda Pro are Lambda but AFR (for gasoline) and AFR (for alcohol) can be selected for numerical display. Upon request, ECM can provide Lambda Pros that display %O or AFR for other fuels. -
Page 11: Maximum And Minimum Afr Recording
Calibration Calibration of Lambda Pro and the Lambda sensor requires that the sensor be held in air for 20 minutes following power-up. To bring the unit into calibration, adjust the calibration potentiometer on the right-hand side of Lambda Pro using the calibration screwdriver provided. -
Page 13: Application Notes
(Lambda=1) under wide-open-throttle conditions also. 6. After a fuel injected engine is shut off, Lambda Pro will display a very high value (i.e. Lambda=1.7). This is because the injection of fuel is stopped with the ignition but the engine pumps a little air before it stops, thus diluting the exhaust from its running condition. -
Page 15: Specifications And Limits
Specifications and Limits Measurements and Accuracy Units Range Accuracy ±0.01 (stoichiometric) Lambda 0.55 to 1.75 ±0.02 (elsewhere) AFR (gasoline) 8.0 to 25.5 ±0.15 (stoichiometric) ±0.50 (elsewhere) ±0.07 (stoichiometric) AFR (alcohol) 3.6 to 11.3 ±0.22 (elsewhere) Recording Specifications Maximum and minimum values over user-defined duration. Input Specifications and Limits Maximum Exhaust Gas Temperature: 950 deg. -
Page 16: Output Specifications And Limits
Output Specifications and Limits Analog Output: • 0V at Lambda = 0.55 or AFR (gasoline) = 8.0 or AFR (alcohol) = 3.6 • 5V at Lambda = 1.75 or AFR (gasoline) = 25.5 or AFR (alcohol) = 11.3 • Output Impedance: 500 Ohm •... -
Page 17: Troubleshooting
Lambda sensors are not repairable. If Lambda Pro reads "bAt" when it is operating, the battery voltage is either too low (less than 11V) or too high (greater than 28V). Proper battery voltage must be used to avoid damage to Lambda Pro and the Lambda sensor. -
Page 19: Safety Warnings
Never work on a running engine. When installing Lambda Pro's cabling and sensor on a stopped engine, it is best to think-out your moves before you make them. Route and cable-tie all cables away from hot, moving, sharp, high energy (spark), and caustic objects. -
Page 21: Warranty And Disclaimers
The warranty is void if Lambda Pro is opened. LIMITATION OF REMEDY Seller's liability arising from or in any way connected with the items sold and/or services provided shall be limited exclusively to repair or replacement of the items sold or refund of the purchase price paid by buyer, at seller's sole option. - Page 24 Los Altos, CA 94023-0040 • USA • (408) 734-3433 • Fax: (408) 734-3432 www.ecm-co.com...
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