Manual

Page 5
Analog Output
The analog output from the AEM Temperature gauge is a linear dc voltage signal that
varies from 0.5 Vdc at 100°F (40°C) to 4.5 Vdc at 300°F (148°C) over the operating
range of the gauge. The signal is used for sending information to a data logger or an
engine management system like the AEM EMS or F/IC. The transfer function for
temperature in degrees Fahrenheit is listed below.
Temperature (Fahrenheit) = 50 x Voltage + 75
The transfer function for temperature in degrees Celsius is listed below.
Temperature (Celsius) = 27 x Voltage + 26.5
A list of output voltages and corresponding temperatures is shown below in Table 1.
Voltage
Temperature
0.50
100
degF
40
degC
0.75
113
degF
47
degC
1.00
125
degF
54
degC
1.25
138
degF
60
degC
1.50
150
degF
67
degC
1.75
163
degF
74
degC
2.00
175
degF
81
degC
2.25
188
degF
87
degC
2.50
200
degF
94
degC
2.75
213
degF
101
degC
3.00
225
degF
108
degC
3.25
238
degF
114
degC
3.50
250
degF
121
degC
3.75
263
degF
128
degC
4.00
275
degF
135
degC
4.25
288
degF
141
degC
4.50
300
degF
148
degC
Connector Pinouts
The pinouts for the 3-pin sensor harness and 8-pin power harness are provided
below in Figure 6.
Figure 6. Harness Pinouts
Table 1. Analog Calibrations