38
8024493/AE00/V1-0/2020-09| SICK
O P E R A T I N G I N S T R U C T I O N S | DUSTHUNTER SP100 Ex-2K
Subject to change without notice
4
PROJECT PLANNING
4.2
Installation location
4.2.1
Project planning for measuring channel
Electrical connection
Ensure the device can be switched off with a power isolating switch or circuit breaker in
accordance with EN 61010-1. The potential equalization line of the sender/receiver unit at
the measuring point must be flexible enough to allow the line to remain connected both
when the sender/receiver unit is removed and installed.
Determining the measuring point
The operator is responsible for determining the measuring point. For official measure-
ments, the regulations of the local authorities must be observed. Furthermore, it is
important to ensure an uninterrupted supply of purge gas and to maintain sufficient space
for the installation and subsequent fitting and removing the sender/receiver unit.
Required thermal insulation
The thermal insulation is an explosion protection measure to be subjected to special
examination when gas temperatures in the duct are higher than the surface temperature
allowed by the selected temperature class. Observe the following during this examination:
– Apart from the duct surface, other parts (e.g. flange tube and flange) that can be
subjected to prohibited high temperatures through thermal conduction are to be
included in the insulation or the thermal conduction prevented.
– The operator must ensure that suitable insulation reduces the heat radiation sufficiently
so that the flameproof enclosure temperature remains below 85 °C and therefore below
the temperature for the temperature protection class. The operator must take into
consideration that the device-internal warming can be up to 2K. It may be necessary to
shade the device in climate zones with high temperatures and intensive sunlight.
– The maximum ambient temperature of 60 °C must be observed during project planning
and operation (
see “Technical data”, page 118
Miscellaneous.
– The operator must ensure that the dust measuring device is permanently supplied with
purge gas.
– The operator is responsible for the tightness of the purge gas line between the device,
connecting pieces and flange and for monitoring the tightness.
– Ensure sufficient ventilation at the installation site.
– The operator must ensure that no hot process gas can escape from the duct when
removing the sender/receiver unit from the duct or that there is no potentially explosive
atmosphere.