MAFM1 - LAMBDA METER
OVERVIEW
MAFM1, our single channel multi sensor compatible air / fuel ratio meter is a proven reliable instrument that has seen wide spread application in many fields, including motorsport, training, research, engine calibration and diagnosis. It users include engine tuners, race car teams, technical training colleges, universities, automotive aftermarket product and original equipment manufacturers and aerospace customers.
This instrument uses either a conventional oxygen sensor or a UEGO (universal exhaust gas oxygen) sensor. It provides a digital display of lambda or Air / Fuel ratio with scaling for Gasoline, Diesel, LPG and Alcohol. An additional bar graph display with a peak and hold function quantifies transient fueling errors. Dual linearized analog outputs are provided for connection to Autronic ECUs or dash / data logger devices.
This instrument uses either a conventional oxygen sensor or a UEGO (universal exhaust gas oxygen) sensor. It provides a digital display of lambda or Air / Fuel ratio with scaling for Gasoline, Diesel, LPG and Alcohol. An additional bar graph display with a peak and hold function quantifies transient fueling errors. Dual linearized analog outputs are provided for connection to Autronic ECUs or dash / data logger devices.
•
SMART - Intelligent adaptive filtering allows the digital readout to provide meaningful steady state readings and rapid response to large air / fuel ratio changes.
•
BRIGHT - Large, high brightness LED displays provided excelent readibility in all lighting conditions.
•
TRANSIENT CAPTURE - When tuning engine management systems for optimal transient fuelling, use the bar graph with peak & hold enabled to capture transient Air/fuel ratio excursions.
•
DIAGNOSTICS - We appreciated the importance of reliable measurement and include measures to prevent invalid measurement. Comprehensive inbuilt diagnostics determine sensor condition and inhibit measurement until the sensor is ready and able to operate reliably. Sensor warm-up state & condition are reported in real time.
•
ROBUST - Designed to withstand the arduous conditions encountered during automotive testing. Multiple levels of defence against electrical surge are provided on the inputs, output and power supply. Over temperature protection is enhanced by a built-in protective hibernation feature.
BENEFITS
SPECIFICATIONS
| MAFM1 - B version MULTI SENSOR COMPATIBLE AIR/FUEL RATIO METER |
||
| Measurement range | Using UEGO sensor Using LSM11 sensor |
0.618 - 5.4 λ 0.580 - 5.4 λ (extended range option - requires firmware rev 1.06) 0.7 - 1.3 λ |
| Digital readout | Display Units Resolution Update rate Effective filtering time constant |
4 digit 0.52" Hi-intensity red LED λ, or A/F Petrol, Gas or Alcohol 0.01 or 0.001 λ, or 0.1 or 0.01 A/F (depending on sensor type connected) 1.25 to 5 samples/sec (user selectable) 0.1 to 6.4 SEC (user selectable) |
| Bar Graph readout | Display range Response time Display modes Max, Min hold times |
20 segment multi-colour LED 0.50 - 3.05 λ (user adjustable limits) 40mSEC (approx) Instantaneous value and / or max value, min & max, min & max & actual, min to max 0.1 - 1.6 SEC (user selectable) |
| Analog output | Output type Output range Output voltage range Output resolution Effective filtering time constant Signal ground range |
Twin voltage O/P type, tolerant to system ground voltage difference 0.5 to 3.05 λ (user can define λ values for min & max O/P limits) 0 - 1.05 & 0 - 5.2 volts (both available simultaneously) Better than 0.1% FS 0.04 - 0.5 SEC (user selectable) +/- 3.0 volts |
| Power supply - Voltage | Normal operation Operational limits Survival limits |
11.0 to 16 volts DC 10.3 to 20 volts DC continuous +/- 23 volts (< 5 minutes) Outside +/-23 volt limits: > +80 A (Load dump < 20 mSEC) > +100 A (Inductive surge < 1 mSEC) < -1000 V (Inductive surge < 10 uSEC) |
| Power supply - Current | Typical Max |
< 1.0 Amp + sensor heater current 1.0 Amp to 4.0 Amp (sensor warm) < 10 amp (sensor cold) |
| Operating temperature range | Limits | -25 deg C to +70 deg C (Automatic safety shut-down @ 70deg C approx) |
| Storage temperature range | Limits | -40 deg C to +80 deg C |
| Housing | Case type Size |
ABS 200 * 112 *31 mm (l * w * h) |
| Weight | 0.4 kg | |
| Connectors | Main connector Sensor connector |
D-sub 9 male (high durability type) D-sub 15 female (high durability type) |
APPLICATION INFORMATION
| Size | |
| MAFM1A SET-UP | 159KB |
| MAFM1B SET-UP | 244KB |
| MAFM1 WIRING | 56KB |
| MAFM1 UEGO sensor wiring | 391KB |
| MAFM1B Calibration (UEGO sensors ONLY) | 187KB |
| Lambda Sensor care | |
PURCHASE OPTIONS
MAFM1 - B version
MULTI SENSOR AIR/FUEL RATIO METER
(supplied with rear mount plate. Available with or without exhaust gas sensor and lead sets for vehicle and/or dynamometer test cell installation)
MULTI SENSOR AIR/FUEL RATIO METER
(supplied with rear mount plate. Available with or without exhaust gas sensor and lead sets for vehicle and/or dynamometer test cell installation)
MAFM1 COMPATIBLE LEADS
Uego Sensor lead (4 or 8 metre)
suits MAFM1-B version only
suits MAFM1-B version only
LSM11 Sensor lead (5 or 8 metre)
Cigarette lighter power lead
Croc. clip power supply lead
Wire-in Power Supply / Log O/P lead
© 2023 Aubert Electronics Pty Ltd
