Zeitronix - Your Ultimate Tuning Partner
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NEW Zt-3 CAN Wideband Air Fuel Ratio Meter and Datalogging System

The Zt-3 CAN reads AFR and Lambda.
For reading AFR, Lambda and additional engine parameters see
the Zt-2.
Compare to Zt-2    

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The Zeitronix Wideband Air/Fuel ratio meter and datalogging system is a high quality, stand-alone system for use with carbureted and electronic fuel injection engines.

The Zt-3 CAN supports CAN Bus communication for easy connection and logging through other CAN Bus devices.
See CAN Bus specs below


The new Zt-3 has the same high quality, high precision air fuel ratio readings as our signature Zt-2 wideband. The Zt-3 supports wideband air fuel ratio and lambda readings, adjustable simulated narrowband output and a new configurable linear wideband output for ease of use with engine management systems and 3rd party gauges.

The new Zt-3's dimensions are only 3 by 2 by 1 inches.  The case includes slots case for easy zip tie mounting in a tucked away location.

Installation instructions
Zeitronix Data Logger Software

AIM XC1 files for Zt-3 CAN Bus
AEM CD-5 CD-7 files for Zt-3 CAN Bus
MegaSquirt Setup for Zt-3 CAN Bus

SEMA Awarded
Zt-3 CAN Bus AFR / Lambda Meter




Zt-3 Wideband AFR CAN Bus

Dimensions:  3" x 2" x 1"
(76mm x 50mm x 25mm)
Supported CAN Bus Specifications:

User selectable CAN Bus Speed:
1Mbps, 500 Kbps, 250 Kbps, 125 Kbps

User selectable CAN Bus ID:
 Standard (11 bit) and Extended (29 bit)

User selectable CAN Bus address:
 Standard 0x0000 to 0x7FF
Extended 0x0000 to 0x7FFF

User selectable CAN Bus update rate:
 1ms (1000Hz) to 250ms (4 Hz)

120 ohm termination- None

CAN DATA:
Data 0, 1 : Lambda 16 bit (Big Endian, Motorola) x 0.001
Data 2 : Lambda 8 bit x 0.01
Data 3 : AFR 8 bit x0.1
Data 7: Lambda sensor status
0x00 Sensor OK
0x01 Sensor cold (warm up)
0x02 Sensor too hot
0x04 Sensor heater circuit open
0x08 Sensor heater circuit shorted
0x10 Sensor maxed at rich lambda
 


Zt-3 CAN Bus Default Settings:

CAN Bus ID Standard (11 bit)
CAN Bus ID (HEX) 0x005A
CAN Bus Update Rate 10 ms (100 Hz)
CAN Bus Speed 500 Kbps

 

Third party CAN Bus display examples
AIM MXS Dash connected via CAN Bus to
ECA CAN

Ethanol Content E%
Fuel Temperature (C)
Zt-3 CAN
AFR 8 bit (1 decimal)
Lambda 16 bit (3 decimals)



AIM XC1 files for Zt-3 CAN Bus


AEM CD-5 Dash connected via CAN Bus to
ECA CAN

Ethanol Content E%
Fuel Temperature (C)
Zt-3 CAN
AFR 8 bit (1 decimal)
Lambda 16 bit (3 decimals)



AEM config files for Zt-3 CAN Bus


Configurable Analog Wideband Output

Match the Zt-3 Wideband output to a third party system, data logger or a 3rd party gauge.

Volts  AFR
     
AFR vs Voltage Table
 


Zt-3 System
No matter if you have a stand alone engine management system, a piggy back fuel control or a carbureted engine. The Zt-3 Wideband Air Fuel Ratio Meter is a must for serious tuners!  Finally you can tune for more power, closer to the edge, precisely monitoring Air/Fuel ratio and datalogging up to 9 hours of data with a blazing rate of 65 samples per second per graph. The Zeitronix Data Logger Software can be utilized as a real time display when using a standard Zt-3 kit with or without the ZR-1 or DashDAQ displays.

Now with CAN Bus.
For maximum compatibility with other system and loggers supporting wide range of CAN Bus settings.

On Board Diagnostics (OBDII) is not required but may be monitored through use of the DashDAQ II XL display which reads and clears engine error codes, log Zt-3 Wideband System and OBDII data and has many additional performance features.


Installation
Very simple installation - connect two wires to +12V and ground and place the O2 sensor in the exhaust stream and you are ready to read AFR!  A simple LED indicator displays off, warm-up and running modes.

We are adding Can Bus configuration files for CAN Bus Displays, Loggers and ECUs.
AIM XC1 files for Zt-3 CAN Bus

Additional information is available for setting up the configurable linear wideband output with your particular engine management system.


Zt-3 Specs

  • 0.1 AFR accuracy
  • Operating voltage 10V to 18V
  • Switching power supply for oxygen sensor heater
  • Precise sensor temperature control
  • Reverse polarity protection
  • Integrated self resettable fuse
  • Positive lock connectors
  • Protected inputs and outputs
  • Flexible Plug and Play Sensor Harness with a small, easy to route through the fire wall, connector
  • Kits available with or without the wideband oxygen sensor included
  • Easy to install plug and play kit
  • Narrowband Output
  • Configurable Wideband Analog Output


Inputs/Outputs
:

  • Bosch Wideband O2 sensor Input
  • Simulated Narrowband Output
  • Linear Wideband Output (configurable with a default setup of AFR = Volts * 2 + 9.6
  • Serial data output to the Zeitronix ZR-1 AFR, DashDAQ and nGauge displays
  • Serial data output for real time datalogging (PC laptop required)
  • CAN Bus High and Low
Input / Output Range
Lambda CAN Bus 16 bit 4.000 to 0.625 Wideband
Lambda (Serial and CAN Bus 8 bit) 1.43 to 0.64 Wideband
AFR (Serial and CAN Bus 8 bit) 21.0 to 9.5 Wideband
Analog Wideband Output 0 - 5V (configurable) see 0 - 1V
Narrowband Output 0 - 1V transient

 

Dual Channel Wideband AFR
Zt-3 CAN works with Zeitornix loggers and gagues just like the Zt-3.
Dual channel AFR readings are available in multiple configurations from individual ZR-1 AFR Gauges connected to two Zt-3s to combined Zt-2/Zt-3 configurations using a ZR-2 Multi Gauge with optional Black Box Data Logger. Many additional configurations are also available.

  Multiple Widebands with Black Box Data Logger and Optional Display

Zeitronix Datalogging Software
The Zt-3 communicates with the PC Laptop via the serial port. The
Zeitronix Data Logger (ZDL) software records up to 9 hours of data per single file. Many different screen display options are available including plots, text and dashboard views and uses a black plot background for easy night tuning. Logging start, stop and pause are accessible from keyboard shortcuts. The ZDL software supports excel CSV and text data export.

Win98/NT/2000/ME/XP/Vista/Windows 7,8,10 compatible.
You do not need P4, P3 or even P2 laptop. We understand that you want to leave your new laptop at home and dedicate the old one to car tuning. We give you well optimized software. If your laptop is capable of running Win95 and up it is good enough for the Zeitronix logging software.

The digital gauge screen option could be used when purchasing the Zt-3 without a display.

Zeitronix Data Logging Software Download.

Standard Zt-3 CAN Kit:

  • Zt-3 CAN Wideband Controller
  • Bosch 5 wire Wideband Oxygen Sensor
  • Oxygen Sensor Harness (10 feet length) *Substitute a 3ft or 20ft oxygen sensor harness.
  • Signal Harness
  • Serial datalogging cable with RJ-12 to DB-9 converting plug
  • Instructions
Optional Displays:
  • CAN Bus Displays and Loggers
  • ZR-1AFR and Lambda Gauge
  • ZR-3 AFR Gauge
  • Hacker Display
  • nDash Touch Screen Display
  • nGague Display