Page 204 - CTS - Mechanic Diesel - TP

MECHANIC DIESEL - CITS

• Observe the instantaneous measuring chamber temperature is continuously displayed on the operating unit. A
temperature of 70°C is reached after approx.20 minutes (assuming operation at 220V). The equipment is then
ready for use and the equipment switches automatically to CAL mode.
NB: Each key of the operating unit has a green LED which does not light up until1 to 2 seconds after the key is
pressed. If the LED does not light up immediately after the key is pressed, this does not indicate any functional
deficiency. Press that Key again.
• Note down the fans are switched on immediately after power up. The light source and the detector are like
wise activated. A “0.0” appears on the digital display (which means 0% opacity). Gently push the lever placed
on the left side on the unit till the green LED light sand keep it pressed till dead end for minimum 5 sec as per
instruction given on 10-1. The equipment carries out an internal check using a calibration plate of around 49%
opacity and then automatically prints out the measured opacity value.
• Note down If” Err” appears on the display when CAL is pressed, clean the detect or and light assembly glass
with a soft cloth
Linearity check
Ensure The actual value should conform with the instrument –specific value indicated on the linearity label at the
front panel.

Figure: Protocol print out after LINEAR CHECK
Performing free acceleration tests

Note: Make sure before each test that the high idle speed is not exceeded, e.g. due to mal
functioning of governor

Procedure to operate the Smoke meter With RPM and Oil Temperature
1 Switch off the engine.
2 Take out the dipstick.
3 Adjust the oil temperature sensor equal to the length of Dipstick.
4 Plug the oil temperature sensor in to oil sump and other side to Smoke meter.

5 Connect RPM Sensor on Vehicle Engine
6 Now switch on the Smoke meter by inserting power ON of the Smoke meter.
7 After switching on the Smoke meter shows the value 0.0 and CALLED glows. Now the equipment is in CAL
mode.

8 Press the TEST key given on the remote.
9 Now press the AUTO key given on the remote.
10 Now you will see 1 written on the remote screen.
11 Select the band width by pressing the Display Select button. If you select band width as1 then the actual
readings will be processed on the basis of band width as 1 then the actual readings will be processed on the
basis of band width decided as average of the maximum and minimum RPM+/- 300-RPM. If you select band
width as 2 then the actual readings will be processed on the basis of band width decided as average of the
maximum and minimum RPM+/-500-RPM, for accepting the selection press AUTO key again.

12 After selecting the rpm range, again press AUTO key.
Display screen will again show one, which correspond to first reading of the Flushing cycle.
13 Accelerate the vehicle from minimum to maximum smoothly till the AUTO LED starts blinking.
14 Press the AUTO key to go to second reading and continue the six flushing cycles.
15 As soon as the six threading complete, pressing the AUTO key will give the print out of the readings of the
three flushing cycles.

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CITS : Automotive - Mechanic Diesel - Exercise 12.2