BERTHOLD TECHNOLOGIES Uni-Probe LB 490, User Manual

Page: 87 / 730

Uni-Probe LB 490
BERTHOLD TECHNOLOGIES GmbH & Co. KG
1 – 87
Volume 1 10 Safety instructions ATEX/FM/CSA
1
10.2
Type of Protection ATEX
The Uni-Probe is licensed for operation in areas in danger of explo-
sion, zones 1 and 2. See also ATEX certificate in Volume 1, chapter
11.1 on page 1–89.
The Uni-Probe housing corresponds to the type of protection „d“
pressure-resistant casing. The connection room is inside the pres-
sure-resistant casing.
The designation with the ID of the types of protection is supple-
mented by the respective ID [ia] on the type label.
Screwed cable glands and adapters
The requirements according to EN 60079-14 and EN 60079-1 apply
to installations of the pressure-resistant entry points (screwed
cable glands, adapters).
Use only ATEX-approved screwed cable glands for the respective
type of protection (see Volume 2, section "5 Screw Fittings and
Accessories"). The pressure-resistant screwed cable glands must
be suitable for volumes of >2 liters. Depending on the type of pro-
tection, this screw fitting has to be approved for gas or dust ex. The
approved type of protection is printed on the screw fitting. The
screwed cable glands have to be installed professionally and must
be suitable for the working temperature range, the cable type (not
armoured, armoured, …) and the cable cross section.
Use only cable cross-sections which are included in the specifica-
tion of the screwed cable gland used.
Please keep in mind that only one adapter may be used per cable
entry. It is not permitted to screw together several adapters.
The connected cables must not be exposed to any tensile stress,
but have to be installed strain-relieved. We suggest that you make
a cable loop before inserting the cable into the housing.
If there is any danger that the cable may be misused as a steplad-
der, then the cables have to be installed properly protected, for
example in conduit pipes. Make sure that the cables that are con-
nected to the Uni-Probe will be installed without chafing, strain-
relieved and without bending.
For screwed cable glands with metric male screw thread you need
ATEX-approved adapters “NPT / metric”.
BERTHOLD TECHNOLOGIES is offering the following adapters:
• ¾" NPT male thread to M16 female thread
• ¾" NPT male thread to M20 female thread
Non-armoured cables
Pass the connection cable with the complete outer insulation
through the cable bushing into the connection box. Pull the hexa-
gon nuts of the cable bushings tight to ensure the connection box is
leak tight and the connection points will be strain relieved. The
tightening torques for the screwed cable glands supplied by
BERTHOLD TECHNOLOGIES are listed in the technical documents in
chapter 5, page 2–247.