yellow jacket YJACK Series - Device Placement and Attachment; YJACK Temperature Clamp and Strap; YJACK Psychrometer and Pressure Gauge

4
Placing the Device on the System
YJACK® Temperature Clamp
Depress the clamp handle to open the clamp jaws and attach the clamp to the pipe
surface where temperature measurements are desired. For best results, attach the
clamp in an area where the clamp jaws have full engagement of the pipe surface.
The clamp can be used on pipes up to 1.25 inches in diameter. Avoid clamping over
areas of pipe that are coated or insulated as this may impact the accuracy of the
system temperature reading. If there is a ferrous metal surface near the placement
of the clamp, the magnet on the bottom of the radio module can be attached to the
surface for a more secure connection.
YJACK® Temperature Strap
Utilize the flexible strap to tightly secure the strap clamp to the pipe surface where
temperature measurements are desired. First, open one of the buckles and pull the
strap out of the buckle so that it is only retained in the second buckle. Feed the strap
around the pipe and back through the open buckle. Pull the strap tightly around the
pipe and then close the buckle. The strap can be used on pipes up to 6 inches in
diameter. For best results, attach the strap in an area where the strap body has full
engagement of the pipe surface. Avoid attaching the strap over areas of pipe that are
coated or insulated as this may impact the accuracy of the system temperature
reading. If there is a ferrous metal surface near the placement of the clamp, the
magnet on the bottom of the radio module can be attached to the surface for a more
secure connection.
YJACK DEW® Psychrometer
Remove the black vinyl cap covering the sensing element. Form the flexible wand to
the desired shape and place the sensing element within the ventilation system or
wherever psychrometric data is desired. If there is a ferrous metal surface near the
placement of the Dew, the magnet on the bottom of the radio module can be
attached to the surface for a more secure connection.
YJACK PRESS® Wireless Pressure Gauge
Remove the red plug from the brass quick coupler nut. Make sure
the pressure transducer has been zeroed (this will be covered in
more detail later) and attach the device directly to the system
low-side or high-side service port. A 5/16” adapter (19121
straight or 19221 90 degree) can be used for systems with 5/16”
connections. The integrated charging port on the back of the
device can be connected to a charging hose for adjustment of
system charge while continuing to monitor system pressure.