• PFD Series has high and low pressure connections
on the back of the gauge which are used to measure
positive, negative or dierential pressures
• The pointer will move in the positive direction if the
pressure of the high input is greater than the low input or
in the negative direction if the pressure of the low input is
greater than the high input
• If a pressure connection is being made to either the high
or the low pressure port, it is not required to plug the
unused port
• If a pressure input is being used to reference
atmospheric pressure, it is not required to plug the
corresponding unused process connection.
Included in each package
• mounting bracket
• 2 x mounting studs
• 2 x hex nuts
• The re-zero adjustment feature should only be
considered after installation
• Access the re-zero adjustment screw at the bottom of the
lens to re-zero the pointer while both the High and Low
pressure ports are open to atmospheric pressure and
without any pressure being applied to the unit
• For general maintenance, periodically disconnect all
pressure inputs and vent all process connections to
atmosphere
• Recalibration or repair by the user is not recommended
• For best results, return WinAIR Compact to Winters
Instruments
PFD WinAIR Compact Differential Gauge
Instructions and Maintenance Manual
Tel: 1-800-WINTERS / www.winters.com WINTERS INSTRUMENTS
• Check the PFD Series gauge for any damage that may
have resulted during transport. Any damage should
immediately be reported
• Maintain packaging until time of installation. Packaging
will provide protection during transport and storage
• Storage temperature is 20°F to 120°F (-7°C to 49°C).
• Protect the WinAIR Compact from moisture and dust
WARNING
Before installation and operation, ensure that the correct
pressure gauge has been selected, consider the pressure
range, ambient and process conditions and that the product
is in good working order
• WinAIR Compact is suitable for very low pressure
installations and is compatible with dry and clean air or
non-corrosive gases
• Install the instrument in a location suitable for the
specication of the gauge and free of pulsation and
vibration
• PFD Series gauges are calibrated in the vertical position
so they should be installed in the same manner to
ensure accuracy
Surface Mount
1. Drill 2 x 7/16” (11.11mm) holes 1 1/32” (26.19mm) apart
on a vertical line for pressure connections
2. Drill 2 x 5/32” (3.97mm) holes on a horizontal line, 2 1/3”
(59.26mm) apart for mounting screws
3. Install mounting screws into the back of the WinAIR
Compact, insert through holes in the panel, and secure
with hex nuts provided
Panel Mount
1. Cut a 2 5/8” (67mm) diameter opening in the panel
2. Install the mounting screws into the back fo the WinAIR
Compact, insert the gauge in the panel and place the
bracket over the mounting screws
3. Install the hex nuts provided onto the mounting screws
and fasten the WinAIR Compact into place
Transportation, Packaging and Storage
Installation
Mounting
Pressure Connection
Options & Accessories
Re-Zero Adjustment, General Maintenance and
Calibration
static pressure tip with
ange 65’ (20m) pvc tubing
