||Grounding terminal: use a ≥ 4 mm2 wire to connect to
the grounding rail.
||Breather plug and lead-throughs for wiring: install cable glands
to lead-throughs as required (see B2, B3, and B4) and seal unused
||Breather plug: do not adjust.
||M16x1.5 wiring lead-through (1): used when wiring the external Ex ia pressure
or temperature sensor input terminal.
||M20x1.5 wiring lead-through with removable plastic transport cover
(fold sides of transport cover together and pull out). Wiring option for analog
output, power supply input, and RS-485 terminals, or customer-specific additional
||M20x1.5 wiring lead-through for analog output, power supply input,
and RS-485 terminals.
||Tightening flange of the connection box with captive Allen screws.
Loosen the captive screws with a 5 mm (3/16 in) Allen key and open the connection
box to access wiring terminals.
||Tightening nut: only tighten from the tightening nut when
installing (wrench size: 50 mm (1.97 in)).
||1.5" male NPT thread: never install the probe to any other thread
type than 1.5" female NPT thread.
||Probe filter (user-replaceable).
||Wiring terminals for 4 … 20 mA input from external pressure or temperature
sensor (Ex ia).
||Barrier separating the intrinsically safe (Ex ia) external sensor input
terminals from the analog output, power supply input, and RS-485 terminals.
||Wiring terminals for 4 … 20 mA analog outputs, 18 … 30 VDC power
supply input, and RS-485 communication.
||Measurement cuvette with optics and CARBOCAP® sensor inside the probe filter.