Product Description
FLOWSIC100 · Operating Instructions · 8012513/YSA5/V2-1/2016-07 · © SICK Engineering GmbH 25
Subject to change without notice
2.3.1.2 Sender/receiver units with internal cooling
The types FLSE100-MAC and HAC can be used for gas temperatures up to maximum
450°C when fitted with internal cooling for the ultrasonic transducers. A control unit with
integrated filter and blower supplies the cooling air (
p. 29, 2.3.3).
The advantages over the purged versions are:
● Lower costs for installation and operation.
● No flow of cooling air into the measured medium, therefore no direct influence on gas
flow and flow rate.
● Lower risk of dropping below the dew point with condensate on the probe head.
The following differences exist in addition to the possible versions:
Fig. 11 FLSE100-MAC
Fit the sender/receiver units at an angle of 60° to the flow direction for dust
concentrations > 1 g/m³ (only applicable for FLSE100-HAC). The down-
stream sender/receiver unit (B in Fig. 4, page 15) must be equipped with an
impact protector.
NOTICE:
Wet or sticky dust can cause strong contamination of the transducer and
disrupt the measuring function. In this case, the cooling air control option, Part
No. 2050814, should be used on device versions with internal cooling (M-AC
and H-AC). Use an external device version when necessary.
Type FLSE100 Transducer and duct probe
MAC Nominal diameter 35 mm
HAC Nominal diameter 60 mm
The type FLSE100-MAC is also available with other flanges on request (
p.
169, 6.3.1).
A - A
NL =350 mm, 550 mm
A
A
NL
6
1
2
4
3
5
1 Electronics unit 4 Transducer
2 Connection piece 5 Connection for connection cable
3 Duct probe 6 Cooling air connection
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