Operation Manual / 4 Product description / A100-L
4 Monitoring during operation / 4.3 Low pressure measurement at the
filter silencer
© Copyright 2017 ABB. All rights reserved.
HZTL4034_EN
Revision K
June 2017
4.3
Low pressure measurement at the filter silencer
4.3.1
Introduction
The low pressure measurement with a U-tube manometer is used for the following pur-
poses:
¡
During acceptance test of the engine: Measurement of the correction factor for the cal-
culation of the turbocharger efficiency
¡
When using a filter mat: An increased pressure loss indicates an increase in the fouling of
the filter material.
4.3.2
U-tube manometer at the filter silencer
Fig. 10: U-tube manometer at the filter silencer
81000
Filter silencer
81050
U-tube manometer
A
[mm H
2
O]
Pressure loss / pressure difference
If the turbocharger is operated at maximum engine power and pressure loss (A) reaches the
value of 200 mm H
2
O:
u
Clean filter mat.
NOTICE
Reading of pressure loss
For simple reading of the pressure loss (A), the dipstick at the U-tube mano-
meter can be pulled out to the level of the lower water level.
Better readability of the U-tube manometer can be achieved by filling with
slightly coloured water.
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