Vaisala CARBOCAP MGP260 Serie Installation Und Sicherheit Seite 14

Probe parts
Items A ... J refer to the probe parts illustration in the beginning of the document.
Table 4 Probe Parts
Item Description
A
Grounding terminal: use a ≥ 4 mm
B Breather plug and lead-throughs for wiring: install cable glands to lead-throughs as
required (see B2, B3, and B4) and seal unused lead-throughs.
B1 Breather plug: do not adjust.
B2 M16x1.5 wiring lead-through (1): used when wiring the optional Ex ia external pressure or
temperature sensor input terminal.
B3 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 wiring.
B4 M20x1.5 wiring lead-through for analog output, power supply input, and RS-485
terminals.
C 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.
D Tightening nut: only tighten from the tightening nut when installing (wrench size: 50 mm
(1.97 in)).
E 1.5" male NPT thread: never install the probe to any other thread type than 1.5" female
NPT thread.
F Probe filter (user-replaceable).
G Wiring terminals for optional 4 ... 20 mA input from external pressure or temperature
sensor (Ex ia).
H Barrier separating the intrinsically safe (Ex ia) optional external sensor input terminals
from the analog output, power supply input, and RS-485 terminals.
I Wiring terminals for 4 ... 20 mA analog outputs, 18 ... 30 VDC power supply input, and
RS-485 communication.
J Measurement cuvette with optics and CARBOCAPâ sensor inside the probe filter.
10
Cable glands are not provided by Vaisala. When selecting cable glands
for your application, note the requirements in
hazardous conditions (page
2
wire to connect to the grounding rail.
7).
Guidelines for safe use in
M212481EN-A