Sensor Connections; Sensor Ac Mains Supply Connections - Ametek Thermox 2000 ATEX Series User Manual

3-28 | Thermox Series 2000 WDG-HPII / HPIIC - ATEX

Sensor connections

This section describes required wiring connections between the control
unit and the sensor. Follow the connection instructions for the applicable
options for your analyzer. All sensor connections require that you access
the sensor board (see Figure 3-16).

Sensor AC mains supply connections

Connections for AC mains supply to the sensor are to the dry sensor board.
They are labeled as follows:
L - Line Connection
N - Neutral (USA)
Chassis Stud -Equipment Ground (Protective conductor)
AC (L) and (N) markings are provided by the terminal block for
connection of AC power.
NOTE
These markings are for reference purposes only such as for use on
system wiring diagrams etc. The system/product has or needs no
specific LINE or NEUTRAL connection for any function, safety or
otherwise. The (N) terminal is not internally grounded, nor needs
to be. The system will operate normally regardless of what AC
input terminal (L or N) that AC Line or Neutral is connected to,
or, if there is a Neutral used at all (i.e. 208 VAC US power connec-
tion).
There is no power switch on the sensor, and it must be protected by install-
ing it on a circuit protected line, maximum 15 amperes, with a switch or
circuit breaker in close proximity to the sensor and within easy reach of an
operator. Mark the switch or circuit breaker as the sensor disconnecting
device.