MEASURE THE RESISTANCE
| Temp [°C] | Resistance [Kohm;] | Voltage [V] |
|---|---|---|
| 40 | 327.2 | 4.88 |
| 30 | 176.3 | 4.78 |
| 30 | 97.75 | 4.62 |
| 10 | 55.85 | 4.37 |
| 0 | 32.91 | 4.02 |
| 10 | 19.99 | 3.56 |
| 20 | 12.51 | 3.04 |
| 30 | 8.047 | 2.50 |
| 40 | 5.311 | 1.99 |
| 50 | 3.588 | 1.54 |
| 60 | 2.476 | 1.18 |
| 70 | 1.742 | 0.89 |
| 80 | 1.246 | 0.67 |
WATER TEMPERATURE SENSOR VOLTAGE
Scheme 40
Scheme 41
SENSOR OUTPUT
| Condition | Voltage |
|---|---|
| Normal condition | 5V |
| Hazardous gas detection | 0V (GND) |
SENSOR OUTPUT
Scheme 42
| Pin No. | 1 | 2 | 3 |
|---|---|---|---|
| Circuit | DC 12V (IGN) | GND | SIGNAL OUTPUT |
IDENTIFYING AQS CONNECTOR TERMINALS
Scheme 43
- Put the sensor part of AQS (A) toward the air inflow (intake) direction.
- Connect all of the power supply line and output line to AQS (A).
- Close the chamber (B) lid after putting the lines in order.
- Connect the air outlet part of vacuum pump (C) with the air inlet door of chamber (B) by using air hose.
- Turn on the power of vacuum pump (B).
- Supply the power to the AQS (A). (DC 12V)
- LED of AQS (A) is kept "ON" for the first 35 +/- 2 seconds after supplying the power.
- Wait until all of the LEDs are "OFF". Put the diesel engine exhaust gas into the chamber. Then check the LEDs of number 1 to 10 are "ON".
- After check LEDs are "ON". Put the clean air into the chamber. Then check LEDs are "OFF".
- Wait until all of the LEDs are "OFF".
- And then put the gasoline engine exhaust gas into the chamber, then check the LEDs of number 1 to 10 are "ON".
- After check LEDs are "ON". Put the clean air into the chamber. Then check LEDs are "OFF".
Sensitivity of used gas sensor
- Sensitivity at NO 2 0.3ppm: More than 2.8
- Sensitivity at Gasoline 10ppm: Less than 0.45
Delay time
- ON TIME (T on): 5 sec.
- OFF TIME (T off): 0 sec.
Scheme 44
RESISTANCE-TEMP. CHARACTERIZE TABLE
| Temp (°C) | R (kohms) |
|---|---|
| 20 | 284.5 |
| 0 | 97.5 |
| 25 | 30.000 |
| 50 | 10.83 |
| 70 | 5.27 |
AMBIENT TEMPERATURE SENSOR TEMPERATURE
