INSTALLATION
Mounting
The PRG101 is usually panel mounted into a minimum 11.5mm hole. Direct pipe
mounting is also possible. To install on a panel remove the knob (grub screw) tension nut
and mounting nut. Insert into the panel and replace the nuts and knob. The mounting nut
should be retightened to a torque of 5Nm; set the tension nut to give adequate friction for
the desired service. It is not necessary to remove the locknuts for installation; these may
be reset if required to give a maximum pressure below the factory setting.
Pneumatics
All pneumatics ports are threaded ¼” NPT. Two gauge ports may be used as required,
and are supplied sealed with pipe plugs.
The following installation precautions are ESSENTIAL:
Air supply- This can be between limits of 0.2 bar (3 psi) above the maximum required
outlet pressure and 10 bar (150psi). The air supply must be filtered to 25 micron, with oil
content below 1ppm and dew point at least -10
˚
C below lowest ambient temperature.
Filtering and oil removal are vital for long life.
Pipe Fitting – Fit appropriate pipe fittings for the pipe sizes required. DO NOT USE
PTFE TAPE. Thread sealing can be easily achieved with loctite hydraulic seal or similar
anaerobic seals.
Pipe sizes – 6mm plastic tubes are commonly used, but increase to 8 or 10mm is
desirable if long pipe runs of high flows are present. Plastic tubes (e.g. nylon) are
convenient and clean.
HEALTH AND SAFETY
The units are simple pressure control instruments and present few safety hazards.
Installation should be in accordance with BS6739 or other relevant national standards.
Compressed air can produce accidents if not correctly used and the user is urged to
adhere to established compressed air safety standard.
These instruments contain no substance which presents hazards in normal use. The
measuring capsule is constructed of beryllium copper, which can present disposal
hazards; if a satisfactory disposal procedure is not available, scrap instruments should be
returned to the factory.
