Fig. 4-1: Leak Testing With U-Tube Manometer (Flame Arrestor); Fig. 4-2: Pressure Drop Test - Emerson ROSEMOUNT Xstream X2 Series Instruction Manual

X-STREAM X2FD
4.1.2.2 Pressure Drop Test
To measure the pressure drop at a fl ame
arrestor

disconnect internal and external gas lines

connect a fl ow meter in series to the fl ame
arrestor

connect an air or nitrogen supply to the
fl ow meter

connect a manometer in a way to measu-
re the pressure at the fl ame arrestor inlet
against the outlet

adjust the fl ow to 1 l/min and compare the
resulting pressure drop to the following
reference value: (5.1 ± 1) hPa.
Replace the fl ame arrestor if the measured
pressure value differs more than 10 % from
the reference value given above.
4-6
4.1 Verifi cations and Tests
Analyzer
fl ame
arrestors
stop
valve
Water

Fig. 4-1: Leak Testing with U-tube Manometer (Flame arrestor)

overpressure approx.
0.725 psi/50 mbar
fl ow meter
fl ame
arrestor

Fig. 4-2: Pressure Drop Test

Emerson Process Management GmbH & Co. OHG
Instruction Manual
HASXMDE-IM-EX
Q = 1 l/min
P
manometer
01/2015