Auto Meter 7570 - Manual (Page 2)

Sensor Control Mode:
All O2 sensors must be heated before an accurate signal is produced. The sensor can be potentially damaged if the gauge begins to heat
the sensor before the engine is running due to condensation that forms on the sensor tip and in the exhaust. To accommodate this, an
internal trigger within the gauge will automatically begin heating the sensor when 12.5 volts or higher is seen on the Red wire (“Normal”
operating mode). While the gauge does not require 12.5 volts to operate (12 volts will suffice), this voltage is used to indicate to the gauge
that the engine is running, as most regulated charging systems will maintain 14 volts or higher.
Once the gauge sees 12.5 volts, it will
begin heating the sensor and the pointer will move back and forth between 8.0 and 9.0 on the dial. When the sensor is heated to the
proper operating temperature the gauge will begin reading air/fuel ratio in real-time.
Fouling and/or permanent damage to the oxygen sensor
over time will result if used with any of the following:
• Leaded gasoline and fuel additives containing lead
• 2 cycle gasoline (gas/oil mix)
• Diesel Fuel
• Nitromethane
• Excessively rich mixtures
If the Air/Fuel Ratio Monitor responds sluggish, the oxygen
sensor is probably partially fouled and should be replaced.
Use replacement sensor, Auto Meter model # 2243 only.
Warning:
12 MONTH LIMITED WARRANTY
Auto Meter Products, Inc. warrants to the consumer that all Auto Meter High Performance products will be free from defects in material and workmanship for a period of twelve (12) months from date of the
original purchase. Products that fail within this 12 month warranty period will be repaired or replaced at Auto Meter’s option to the consumer, when it is determined by Auto Meter Products, Inc. that the product
failed due to defects in material or workmanship. This warranty is limited to the repair or replacement of parts in the Auto Meter instruments. In no event shall this warranty exceed the original purchase price of
the Auto Meter instruments nor shall Auto Meter Products, Inc. be responsible for special, incidental or consequential damages or costs incurred due to the failure of this product. Warranty claims to Auto Meter
must be transportation prepaid and accompanied with dated proof of purchase. This warranty applies only to the original purchaser of product and is non-transferable. All implied warranties shall be limited in
duration to the said 12 month warranty period. Breaking the instrument seal, improper use or installation, accident, water damage, abuse, unauthorized repairs or alterations voids this warranty. Auto Meter
Products, Inc. disclaims any liability for consequential damages due to breach of any written or implied warranty on all products manufactured by Auto Meter.
SERVICE
For service send your product to Auto Meter in a well packed shipping carton. Please include a note explaining what the problem is along with your phone number. If you are sending product
back for Warranty adjustment, you must include a copy (or original) of your sales receipt from the place of purchase.
FOR SERVICE SEND TO: AUTO METER PRODUCTS, INC. 413 W. Elm St., Sycamore, IL 60178 USA (866) 248-6357
Email us at [email protected]
http://www.autometer.com
© 2010 Auto Meter Products, Inc. 2650-1469-00 08/31/10
The Super Bezel is a registered trademark of Auto Meter Products, Inc.
Data Logger Output Range:
The Auto Meter Air/Fuel gauge has a signal output for supplying information to a Data Logger or engine management system. The signal
provided is a linear 0-4 volts output. 0 volts out equals 10.0 Air/Fuel Ratio, 4 volts out equals 18.0 Air/Fuel Ratio.
Note: Due to the limitations of the sensor, the indicated Air/Fuel Ratio
will never go below 10.00 on the dial when used with gasoline.
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Volts = 0.5 (AFR - 10) or AFR = 2 (Volts) + 10