The quick and easy to use Professional Lambda Meter (PLM) measures the air fuel ratio over a wide range of mixtures with fast response time. It has the power and configurability required for both development and tuning of emission controlled vehicles and for use in motorsport.

Sensors compatibility

• Bosch LSU, 5 wire sensor

• NTK UEGO, 5 wire sensor

Basic specifications

Inputs/Outputs

• 2 x Digital inputs, user programmable as PLM-enable or RPM input

• 1 x Analogue voltage output, user programmable from 0 to 5 V, provided as differential voltage ranging from –4.8 to 5 V

• Power supply 7 to 16 V
• Input current
  • 60 mA typical with backlight off
  • 110 mA typical with backlight on
  • plus sensor heater current (maximum 8 A)

Communications

• 1 x CAN

• 1 x RS232 for configuration only

Display

• LCD 3.5 digit

• Digit height 12.7 mm

• Green LED backlight

Connectors

•  2 x D9, 9 pin Dsub connector

Physical

• Dimension 105 x 41 x 25 mm (excluding connector)
• Weight 135 gram

General

• CAN communications up to 1 Mbit
• RS232 communication for configuration
• Analogue output providing differential voltage
• Maximum 8 ampere sensor heater
• Multiple PLMs (up to 16) can be connected together
  
• Usable as an alternative to wideband Lambda upgrades in MoTeC ECUs and Dash Loggers
• 2 x 9 pin Dsub connector
• Robust aluminium enclosure

Measurement/Configuration

• Compatible fuel:
  • gasoline/petrol
  • alcohol
  • LPG
  • diesel
  • user defined 'blend' fuel
• Comprehensive diagnostic and status channels
• Calibration methods:
  • automatic, using the sensor's built-in calibration resistor
  • manual table entry
  • known oxygen environment
  • calibration constant
• Standard configuration tables
• Configurable to compensate for sensor aging and contamination
• Accuracy +/– 1.5%
• Operating range:
  • Lambda 0.7 to 32
  • AFR 10.3 to 470 for gasoline/petrol
  • oxygen 0 to 22%

Display

• Display configurable to show Lambda, Air Fuel Ratio or equivalence ratio
• Flexible display setup configurable for
  • resolution (decimal points)
  • display update rate
  • display filtering
  • backlight intensity
• Easy to read 3.5 digit LCD with 12.7 mm (½") digit height