Vaisala MGP260 Series, User Manual, Page: 14 / 92

2.3 Probe parts
Figure 2 (page 12) shows the MGP260 main components with the connection box of the
probe closed and opened.
1 2 3 4 5 6
8
9
10 11
7
Figure 2 MGP260 probe parts (closed and opened view)
1
Grounding terminal: use a
≥
4 mm
2
wire to connect to the grounding rail
2 Breather plug and lead-throughs for wiring: install cable glands as required and seal
unused lead-throughs (see
Lead-through options and breather plug (page 13) )
3 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.
4 Tightening nut: only tighten from the tightening nut when installing (wrench size: 50 mm
(1.97 in))
5 1.5" male NPT thread: never install to any other thread type than 1.5" female NPT thread
6 Probe filter (user-replaceable)
7 1.5" NPT thread test plug
8 Wiring terminals for optional 4 … 20 mA input from external pressure or temperature
sensor (Ex ia)
9 Barrier separating the intrinsically safe (Ex ia) optional external sensor input terminals
from the analog output, power supply input, and RS-485 terminals
10 Wiring terminals for 4 … 20 mA analog outputs, 18 … 30 VDC power supply input, and
RS-485 communication
11 Measurement cuvette with optics and CARBOCAP
â
sensor inside the probe filter
MGP260 User Guide M212504EN-A
12
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