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AVL DiGas 4000 User Manual

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Evaluation Unit AVL 4000
4-60 Service Manual
4.25.4 Diesel - Opacity Measuring Chamber Type A
Error diagnostics menu for opacity measuring chamber
Fig. 4-7
Amplification (selenium cell)
With the AMPL button, select the required amplification factor (HIGH or LOW).
Lamp status
Here you can switch the lamps on and off individually.
Opacity signal
If the sum voltage (of lamps A, B) > 5 V, the selenium cell is already saturated -
lamps are too bright.
If the selenium voltage (lamps OFF) > 0.2 V, there must either be a fault in the
selenium cell (or selenium board) or the photo-element is not closing properly
(causing incidence of ambient light).
SIGNAL OPACITY GAIN LAMP
2.685 V LOW A
VALVE VOLTAGE POSITION
1.86 V CALIBRATION
TEMPERATURE
MEAS. CHAMBER INLET MEAS. HEAD SYSTEM
101° C 85° C 20° C 25° C
LINEARITY DATE TIME
0.5 % 30/01/99 16:30
Opacity signal
(depending on lamps,
selenium cell and
gain setting)
Change the set gain
with AMPL
Lamp status
change with LAMP
(lamp A, B, A/B, off)
Valve position
change with VALVE
Measured temperatures
System time
Silicon Serial Number
(Mainboard)
Linearity
Start linearity check with LIN

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AVL DiGas 4000 Specifications

General IconGeneral
BrandAVL
ModelDiGas 4000
CategoryTest Equipment
LanguageEnglish

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