Ashcroft GC52 - Rangeable wet/wet Differential Pressure Transmitter - Manual (Page 8)

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5. MOUNTING
5.1 General
The GC52 was designed to be mounted using the bracket supplied.
Pressure connections via the (2)
1 ⁄
4
NPT female pressure ports. Al-
though the display can be rotated in 90 degree increments by remov-
ing the display cover it is preferable to orientate the electrical
termination downward, particularly in applications where protection
from the environment is required.
5.2 Mounting Orientation
It is preferable to orientate the unit with the pressure ports either
downward or upward. If mounting with pressure ports to the side an
“orientation effect” will be seen at zero pressure as the pressure gen-
erated by the silicone oil fill will appear as a zero offset. If mounting in
this manner this effect may be taken out by re-setting zero in final
mounting orientation.
5.3 Installing Pressure Port Manifold
(1) Mounting 25.4mm Manifold ( 1 ⁄
4
˝ NPT female ports)
Manifold is secured using the (4) socket head bolts (M4x40) and
appropriate allen wrench which is supplied. Check for dust and
dirt on the O-ring and seal area, clean if necessary, before in-
stalling to ensure proper connection. The direction of the manifold
is not important, determine best position by ability to operate the
equalizing valve.The equalizing valve is used to open both ports
to the line pressure at time of installation. Once installed and the
system has been pressurized the valve needs to be closed to iso-
late the low and high pressure sides of the device.
Tighten the equalizing valve with a torque of 0.75 ft-lbs±15%.
When loosening the valve do not back off by more than three
turns from the closed position.
(2) Panel Mounting
Similar to (1) above except that the GC52 is put between the man-
ifold and the bracket and then the (4) socket head bolts (M4x40)
are installed.