39
8020216/19YN/V3-0/2020-12| 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-3K
Subject to change without notice
PROJECT PLANNING
4
4
Project planning
4.1
Device configuration
The device components required for a measuring system depend on the respective
application conditions. The following Section can help you with your selection.
4.1.1
Selecting the sender/receiver unit
Selection of the suitable sender/receiver unit depends on the wall and insulation thickness
of the duct and the composition and temperature of the sample gas.
Table 8: Sender/receiver unit selection Table
Wall and
insulation
thickness
[mm]
Nominal
length NL
[mm]
Protective
tube
length
[mm]
Sample gas
Sender/receiver unit
type
Max.
temperature in
°C
Corrosiveness
Max. 100
435
300
220
Non-corrosive/
low corrosion
DHSP-T2V11EX3K
Corrosive
DHSP-T2H11EX3K
400
Non-corrosive/
low corrosion
DHSP-T4V11EX3K
Max. 400
735
600
220
Non-corrosive/
low corrosion
DHSP-T2V21EX3K
400
Non-corrosive/
low corrosion
DHSP-T4V21EX3K
Further variants available on request
●
Select the nominal length of the sender/receiver unit so that the measuring volume
has an adequate clearance to the internal duct wall.
– Standard version clearance: At least 100 mm.
– High-temperature version clearance: Between 100 mm and 140 mm so that the
measuring probe does not protrude too far into the duct and is not warmed up
unnecessarily by the hot sample gas.
●
The selected nominal length of the sender/receiver unit should only be as long as
necessary, the measuring volume (
see “DHSP-T2VxxEX-3K sender/receiver unit”,
) need not be in the middle of the duct.
●
Observe the maximum process pressure (
see “Technical data”, page 124
operation of the measuring system is not possible when this exceeds the maximum
pressure specified for the sender/receiver unit.
●
Limit values for corrosive gas composition (standard values assuming normal
pressure and temperature conditions. Use lower values for mixtures of several
components):
– HCl:
10 mg/m³
– SO
2
:
800 mg/m³
– SO
3
:
300 mg/m³
– NOx:
1000 mg/m³
– HF:
10 mg/m³
