ABB TPL73-A30 - Underpressure Measurement on Filter Silencer

Operation Manual / TPL69-A10 / -A30 ... TPL77-A10 / -A30
Operation
4
Underpressure measurement on filter
silencer
4.5
Page 45
© Copyright 2016 ABB. All rights reserved.
December 2016 HZTL2481_EN Revision B
Underpressure measurement on filter silencer
4.5
A U-tube manometer can be ordered from ABB Turbo Systems for meas-
uring the negative pressure at the filter silencer.
The measurement can be used for the following purposes:
 To measure the correction factor for calculating the turbocharger effi-
ciency during the engine acceptance test.
 The use of a filter mat on the filter silencer can cause a loss of pres-
sure. A significant pressure loss indicates an increase in dirt build-up
in the filter material.
U-tube manometer on filter silencer (if present)
81000 Filter silencer
81050 U-tube manometer
A [mm H
2
O]
Pressure loss / Pressure difference
With a clean filter silencer (and clean filter mat, if provided), the maximum
pressure loss (A) is
120 mm H
2
O at full load.
When the pressure loss (A) has reached 200 mm H
2
O:
 Clean filter silencer.
NOTICE
Reading off pressure loss
The measuring rod on the U-tube manometer can be withdrawn to the
bottom water level so that the pressure differential (A) can be easily
read off.
The U-tube manometer can be read off more easily if slightly coloured
water is poured in.
4.5
4.5.1