Level Plus
®
LevelLimit
®
Operation Manual
I
34
I
13.5.2 Explosionproof / Flame Proof
13.5.2.1 Specific Conditions of Safe Use
1. Warning: The equipment contains non-metallic enclosure and
process parts, to prevent the risk of electrostatic sparking. The
non-metallic surface should only be cleaned with a damp cloth.
Painted surface of the equipment may store electrostatic charge
and become a source of ignition in applications with a low relative
humidity <~30% relative humidity where the painted surface is
relatively free of surface contamination such as dirt, dust or oil.
Cleaning of the painted surface should only be done with a damp
cloth.
2. Cables shall be rated > 5 °C above maximum ambient
temperature.
3. To maintain the ingress protection rating of IP65, Teflon™
tape (3 wraps) or pipe dope shall be used. Refer to Installation
Instructions.
4. Equipment can be installed in a boundary wall configuration
where the process connection is installed as Category 1G
equipment while the transmitter housing is installed as Category
2G equipment. Refer to installation instructions.
5. Flexible gauges have a minimum bend radius of 381 mm (15 in.).
6. Flamepaths not for repair.
7. The applicable temperature class, ambient temperature range and
process temperature range of the equipment is as follows:
• T3 with Process Temperature range −40 °C to +150 °C
• T4 with Process Temperature range −40 °C to +135 °C
• T5 with Process Temperature range −40 °C to +100 °C
• T6 with Process Temperature range −40 °C to +85 °C
• Ambient Temperature Range is −40 °C ≤ Ta ≤ 71 °C
8. When mounting on a MLG (magnetic level gauge) make sure the
electronic head and pressure barrier have a minimum spacing of
5 in.. See Installation Manual for detail.
PENDING
