AFM1000 Kit

(0 to 5V Output)

MPN: AFM1000 Category:

Arguably the most prolific AFR measurement instrument in existence, the AFM1000 Air-Fuel Ratio Monitor is a tool for the calibration, monitoring, and closed-loop operation of fuel-injection and carbureted engines.  Exceedingly simple to hook-up and operate, the AFM1000 comes complete with sensor, harness, module, operator’s manual, and an exhaust boss and plug.  The 0 to 5V analog output is linearized in AFR and Lambda and can be connected to any data acquisition or engine control system.  The AFM1000 provides unmatched measurement range, accuracy, and speed-of-response in a compact, lightweight package and is an essential tool for any in-vehicle powertrain development program.


Response Time Less than 150 ms
Fuel Type Any fuel
Power 11 to 28 VDC, 5A (max. 1min. surge), 1.2A (steady-state)
Dimensions 4" x 3.5" x 1" (W x H x D)
Calculation Time 1 ms
Harness 3', 10', 20'
Ranges & Accuracies
Range Std. Version: 0.55 to 1.24 λ, 8.0 to 18.0 AFR (gasoline), 3.55 to 7.99 (methanol)
B Version: 0.41 to 1.37 λ, 6.0 to 20.0 AFR (gasoline), 2.66 to 8.88 (methanol)
C Version: 0.69 to 1.37 λ, 10.0 to 20.0 AFR (gasoline), 4.44 to 8.88 (methanol)
D Version: 0.30 to 1.15 λ, 4.37 to 16.76 AFR (gasoline), 1.94 to 7.44 (methanol)
Accuracy +/-1.5%
Analog 0 to 5 V, linearized with AFR and Lambda

Included Kit Components

Note: One module, one harness, and one manual supplied per kit.

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Calibration Tools

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AFM1000 & AFM1500 Manual (Ver. 2004-02-06, 374 KB)
AFM1000 & AFM1500 Extended Range (6 ~ 20 AFR) Manual (Ver. 2004-02-06, 373 KB)
AFM Brochure (2 MB)
TechNote Engine Stoichiometry (66 KB)