Hach ORBISPHERE 366 Series, Основное руководство пользователя

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1.2 Customer supplied cable requirements
"Safe" area analog output, alarm output, and RS-232 or RS-485 cables are "control" cables (that is,
not power cables). They must be shielded cables that meet the specifications below:
Table 1 Safe area analog and alarm output cable
External diameter ≥ 4 mm; ≤ 6 mm
Wire (core) area 0.14–0.25 mm
2
(26–24 AWG)
Insulation PVC
Nominal voltage 250 V
Absolute maximum voltage 1200 V
Absolute maximum current 1.5–2.5 A
Wire resistance 70–140 Ω/km
Capacitance @ 800 Hz wire: 100 pF/m; screen: 240 pF/m
Table 2 Hazardous area analog recorder output and RS-485 cable
Maximum length 1000 m
Number of wires 2 (twisted cable for RS-485)
External diameter 6.5 mm max
Wire (core) area 0.5 mm
2
(20 AWG) or more
Insulation PVC
Nominal voltage 250 V
Absolute maximum voltage 1200 V
Absolute maximum current 6 A
Wire resistance 39 Ω/km or less
Capacitance @ 800 Hz wire: 150 pF/m or less; screen: 290 pF/m or less
Table 3 Power cable
Number of wires 3-wire (live, neutral and earth)
External diameter ≥ 6 mm; ≤ 10.5 mm
Wire (core) area ≥ 1 mm
2
, AWG18; ≤ 2.5 mm
2
, AWG14
Table 4 External pressure sensor cable
External diameter ≥ 4 mm; ≤ 6 mm
1.3 Instrument configurations
Model Gas Phase Concentration units
366x EX / 1xx O
2
* Dissolved ppb/ppm; ppm; mg/L
Gaseous Pa/kPa; mbar/bar; %; % sat; ppm/%
366x EX / 2xx H
2
Dissolved ppb/ppm; cc/kg
Gaseous Pa/kPa; mbar/bar; %
4 English