Hach ORBISPHERE ATEX 366 Série Manuel D'utilisation Simplifié page 14

Figure 7 3660EX instrument with external pressure sensor (Example is wired RS 232)
1 Connection to "hazardous area": Inside the
instrument, cables to "hazardous area" must never
overlap the "safe area".
2 Connections to "safe area": "Hazardous area"
cables must be shielded up to the connector, then
the shield must be connected to ground.
3 Color code for sensor cable item no. 32514E
4 Shield ground
5 Lemo 10
6 PG gland
7 O2, O3 or H2 sensor (hazardous area)
14 English
8 Current output to hazardous area
9 External pressure sensor
10 Current output to safe area and alarm outputs
11 RS-232 or RS-485
12 115 or 230 VAC (L= Line, N=Neutral)
13 PE-Earth