Cables (Power Supply / Communication) - Honeywell enCore Series Manual

5
5.6.2

Cables (power supply / communication)

For the connection between the instrument and other instruments different control
and signal cables are suitable, the choice depends on the requirements at the place
of use.
Cables and wires are standard products (not from the manufacturer)
which are necessary to operate the device. It is recommended to dis-
connect the data cables from the power supply cable.
Generally, the connection cables can be routed to 2 separate locations without
additional ex-rated junction boxes. The insulation must at least comply with flam-
mability class 1. Use screened cables. The screen on the connection cable must be
connected in compliance with local regulations.
DANGER
Unsuitable cables
Dangerous situations can arise
Cables shall be suitable for + 80°C ≙ 176°F.
DANGER
Des câbles inadaptés
Des situations dangereuses peuvent survenir
Le câble doit être adapté à + 80°C ≙ 176°F.
The connection terminals are suitable for conductor cross-sections from 0.25 mm²
≙24 AWG to 2.5 mm² ≙14 AWG. Signal cables require conductor cross-sections of ≥
0.25 mm² ≙24 AWG. We recommend signal cables with a conductor-to-conductor
capacity of less than 120pF/m ≙ 36.58 p S
0.7 µH/m ≙0.213 µΩs /ft.
The number of cores varies depending on the application, whereby the cores should
be twisted into pairs and screened jointly. The maximum cable length depends on
the type of signal and must not be exceeded. A cable type of category 5 (Cat 5) is re-
commended for data communication links via Ethernet.
Cables or cores are fed into the device via cable glands. See also the next section.
The relevant installation guidelines must be obeyed for routing the cables!
GasLab Q2
GasLab Q2 after delivery and at the place of use
−1
/ft and an inductance of less than
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