Cooper Instruments & Systems DPG 100 Digital Pressure Test Gage - Manual (Page 9)

CHAPTER 3 SET UP
3.1 Installation
When installing the instrument into a process connection, make sure all backpressure is relieved from the system.
Make sure that you use the proper fitting to mate with the instrument.
To connect to the pressure fitting, use:
• 1/4-18 NPT for ranges below 500 PSI (3/4" hex wrench)
• 9/16-18 UNF-2B (straight thread) for ranges 500 PSI and above (7/ 8" hex wrench). An O-ring is needed to
seal the connection.
Failure to use the correct fitting will result in leaks. Always use the proper size wrench when tightening the
instrument into your system. NEVER attempt to tighten the unit by turning the round housing by hand or other
means. This may result in permanent damage to the instrument and will render the warranty void.
Figure 3-1: Always use a wrench
3.2
Front Panel Rotation
To allow for easy reading and operation regardless of the placement of the process connection, the front face panel
can be rotated up to 360 degrees with respect to the pressure port. To re-mount the front face panel into the
position of your choice:
• Remove the center screw on the back of the instrument.
• Remove the front face panel from the case.
• Rotate the front face panel into the desired position. Take care not to disconnect the sensor ribbon cable
from the electronics.
• Replace the front face panel. Do not crush or crimp the ribbon cable while replacing the front face panel.
• Carefully replace the rear center screw.
Figure 3-2: Illustration of Front Face Panel Rotation
DPG 100 6 Rev Feb 2001