AEM Analog H2O Flow Gauge 305142 User Manual

 
 
 
 
AEM Performance Electronics 2205 126th Street Unit A, Hawthorne, CA. 90250 Phone: (310) 484-2322 Fax: (310) 484-0152 http://www.aempower.com Instruction Part Number: 10-5142 Rev 01  2009 AEM Performance Electronics 
 
Part Number 30-5142  
1000 cc/min Water/Methanol Injection Flow Gauge 
Figure 1.  Wiring Schematic 
AEM Water/Methanol Injection Flow Gauge Parts 
 
1 x 35-5142(B/W) Flow Gauge Assembly  
1 x 35-2128 Flow Sensor  
2 x 35-4527 Fitting, ¼ NPTF to ¼ Tube 
1 x 35-4302 Install Kit (6...

Page 2 
INSTALLATION 
 
1. Disconnect the negative battery cable. 
2. Secure the gauge in a 2 1/16” (52MM) mounting hole with the supplied bracket.  Use 
the supplied rubber band as a spacer around the gauge if it fits loosely into its 
mounting hole. 
3. Plug the 8-wire power harness into the mating connector on the back of the gauge 
and connect the wires as shown in Figure 1.  The power harness connector can only 
be inserted one way.   
4. Install flow sensor as close as practically possible to final...

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Changing the Bezel 
 
The AEM Water/Injection Flow Gauge comes with the black bezel installed.  However, a 
silver bezel is also included in the gauge kit.  To change the bezel, orient the gauge so 
you are looking at the faceplate.  Rotate the bezel counter-clockwise to unscrew it from 
the gauge cup.  The bezel, lens, and rubber spacer are all removable.  Reassemble the 
gauge as shown below in Figure 3.  Note: When reassembling the gauge, it may be 
necessary to apply a light amount of...

Page 4 
 
Status Lights 
 
The AEM Flow Gauge has two status lights (see Figure 4) that indicate when a high 
flow condition exists.  The right status light flashes once and then repeats if flow is 1250 
cc/min or more.  This can be indicative of either a controlled flow rate that is beyond the 
range of the gauge or a slight leak in the system.  Both status lights flash four times and 
then repeat if flow is 2000 cc/min or more.  This can be indicative of an uncontrolled 
open line condition, such as a...

Page 5 
 
 
Voltage cc/min gal/hr 
0.50 0 0.00 
0.75 63 0.99 
1.00 125 1.98 
1.25 188 2.97 
1.50 250 3.96 
1.75 313 4.95 
2.00 375 5.94 
2.25 438 6.93 
2.50 500 7.93 
2.75 563 8.92 
3.00 625 9.91 
3.25 688 10.90 
3.50 750 11.89 
3.75 813 12.88 
4.00 875 13.87 
4.25 938 14.86 
4.50 1000 15.85 
4.65 1250 19.81 
4.85 2000 31.70 
 
 
 
 
 
Connector Pinouts 
 
The pinouts for the 3-pin sensor harness and 8-pin power harness are provided below 
in Figure 6. 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Figure 6....

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Specifications 
 
Gauge 
Supply Current 0.1 A  
Differential Analog Outputs 1 
Measuring Range 0-1000 cc/min 
0-15.85 gal/hr 
Operating Voltage (nominal) 8.5-15 volts dc 
Harness & Connector Temp Limit: 105C 
 
Notes 
 
The sensor is a precision pressure measuring device and should not be subject to 
mechanical or thermal shock or it may be damaged.  
 
If  further  tuning  help  is  needed  be  sure  to  visit  the  video  gallery  or  performance 
electronics  forum  at www.aempower.com for...

Page 7 
12 MONTH LIMITED WARRANTY 
 
Advanced  Engine  Management  Inc.  warrants  to  the  consumer  that  all  AEM  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  AEM’s  option,  when 
determined  by  AEM  that  the  product  failed  due  to  defects  in  material  or  workmanship. 
This...