Fluke Biomedical DPM2 Plus - Manual (Page 14)

DPM2 Plus
Operators Manual
6
Connecting the Equipment under Test
The Meter has a male Luer-Lok fitting that serves as the pressure sensing input
port. For connecting different diameter tubing, use a stopcock or a male-to-
female Luer-Lok fitting.
Note
Normally, you can use hospital grade tubing for all connections
between the pressure source and the Meter. However, rigid tubing
should be used for negative(vacuum) pressure measurements.
Pressure Measurements
Connect the source of pressure to the Luer-Lok input of the Meter. This may
require a stopcock or a male-to-female Luer-Lok connector.
Once the connection is made, the display indicates the pressure being
measured.
If the display shows a 1 in the far left position with all other digits blank, this
means the limits of the selected range have been exceeded.
Measuring Gas and Gaseous Mixtures
No special procedures are necessary when using the Meter to measure air
pressure. However, when measuring gases other than air, you must purge all
air from the tube connecting the source to the Meter. Let the gas bleed from the
end of the tubing before connecting to the Meter to remove atmosphere. This
ensures a homogenous medium for pressure measurements.
Measuring Liquid Mediums
The pressure sensor in the Meter has a thermoplastic polyester (GE-Valox)
housing. Therefore you can measure water or other liquid (solvent) pressure,
provided the pH of the liquid is between 6.5 and 7.5.
W Caution
When measuring a gas pressure, errors can result if there
is liquid in contact with the pressure sensor.