Matheson 819 Series, Operating Manual

Page: 6 / 48

6
GETTING STARTED
Power Jack
8 Pin Mini-DIN
Display Screen
Inlet Connection Port
Outlet Connection Port
Flow Direction Arrow
MOUNTING
Medium Mass Flow Meter
819-Series Gas Flow Meters have holes on the bottom for mounting to flat
panels. See pages 41-44.
819-Series Meters can usually be mounted in any position. No straight runs of
pipe are required upstream or downstream of the meter.
PLUMBING
Your meter is shipped with plastic plugs fitted in the port openings. To
lessen the chance of contaminating the flow stream do not remove
these plugs until you are ready to install the device.
Make sure that the gas will flow in the direction indicated by the flow arrow.
Standard 819-Series Gas Flow Meters have female inlet and outlet port
connections. Welded VCR and other specialty fittings may have male ports.
The inlet and outlet port sizes (process connections) for different flow ranges
are shown on pages 41-44.
Do not use thread sealing Teflon® tape on compression fittings.
On NPT threaded connections, do not wrap
the first two threads. This will
minimize the possibility of getting tape into the flow stream and flow body.
Do not use pipe dopes or sealants on the process connections as these
compounds can cause permanent damage to the meter should they get
into the flow stream.