Omega PX2088 User Manual page 33

Explosions could result in death or serious injury:
Do not remove the transmitter cover in explosive atmospheres
when the circuit is alive.
Before connecting a HART-based communicator in an explosive atmosphere, make
sure the instruments in the loop are installed in accordance with intrinsically safe or
non-incendive field wiring practices.
Verify that the operating atmosphere of the transmitter is consistent with the
appropriate hazardous locations certifications.
Both transmitter covers must be fully engaged to meet explosion-proof requirements.To
avoid output shifts in critical applications, do not plug the low side with a solid plug.
High voltage that may be present on leads could cause electrical shock:
• Avoid contact with leads and terminals.
To power the transmitter, connect the positive power lead to the terminal marked
"SIG +" and the negative power lead to the terminal marked "–" (see Figure 4-8 on
Page 4-10). Tighten the terminal screws to ensure that adequate contact is made. No
additional power wiring is required.
To connect test equipment for monitoring the output of the Model PX2088
during maintenance procedures, connect one lead to the terminal labeled
"TEST+" and the other lead to the terminal labeled "–" (see Figure 4-8 on Page 4-10).
Avoid contact with the leads and the terminals.
Signal wiring may be grounded at any one point on the measurement loop, or it may
be left ungrounded. The negative side of the power supply is a recommended
grounding point. The transmitter case may be grounded or left ungrounded.
Conduit connections at the transmitter should be sealed to prevent moisture
accumulating in the field terminal side of the transmitter housing. Also, install
wiring with a drip loop with the bottom of the drip loop lower than the conduit
connection of the transmitter housing.
4-9