Test Equipment For Customer Service; Test Gases For Customer Service; (With Manufacturer's Certificate) - Bosch ETT 008.31 Repair Instructions

2.3

Test equipment for customer service

1 siphon, water gauge 100 cm, inside diameter max. 8 mm
1 flow meter (variable-area type), measuring range 1.0 l/min.
to 10 l/min., measuring medium air, 20 °C, 1 bar absolute
1 absolute-pressure sensor (barometer) or adjusting barometer
set to absolute pressure. Measuring accuracy 5 Hpa (5 mbar)
1 gas-wash bottle (bead bottle)
1 digital multimeter (DMM)
1 oscilloscope, sensitivity 5mV/cm
1 thermometer with surface probe
1 P100 or P200 or P140 for engine-speed measurement
1 DC calibrator, 0 to 15 mV
1 data terminal (pocket keypad)
1 measured-value printer (integrated or connected externally via
serial interface)
Viton hose to test-gas connection (do not use any other type of
hose material)
Compressed air for cleaning test-gas probe and hose
2.4

Test gases for customer service

(with manufacturer's certificate)

In order to save on bottles of test-gas, mixed gases are sometimes
recommended.
No.1: 14 % CO
2
No.2: 16.000 ppm C H (propane)*)Accuracy of analysis ± 1 %
3 8
No.3: 9 % CO
No.4: 5 % CO + 7.5 % CO
2.000 ppm C H (propane)*) Accuracy of analysis ± 1 %
3 8
No.5: 2 % CO +
3.800 ppm C H (propane)*) Accuracy of analysis ± 1 %
3 8
No.6: 8.000 ppm C H (propane)*) +
3 8
1 % CO
In some countries, A and B are used for the calibration of test
gases in accordance with OIML Directive R99. These gases may
also be used for the purpose of fine-tuning. In this case, gases no.
1 and 4 need not be used.
A 2.000 ppm C H (propane)*) Accuracy of analysis ± 1 %
3 8
3.5 % vol. CO
14 % CO
2
B 200 ppm C H (propane)*)
3 8
0.5 % vol. CO
6 % CO
2
*) The exhaust-gas analyzer is fine-tuned regularly with propane
(instead of hexane) for practical reasons. During fine-tuning,
the exhaust-gas analyzer is informed of the concentration of the
test gas in "ppm propane". The exhaust-gas analyzer auto-
matically takes account of the necessary "propane factor".
Accuracy of analysis ± 1 %
Accuracy of analysis ± 1 %
+
2
Accuracy of analysis ± 1 %
Accuracy of analysis ± 1 %
Accuracy of analysis ± 1 %
Accuracy of analysis ± 1 %
Accuracy of analysis ± 1 %
Accuracy of analysis ± 1 %
5