KROHNE DW 181-182-183-184 EN - Manual (Page 15)

Installation and operating instructions DW 181 - 184 15
4.4 High-temperature version (KROHNE temperature class H3, non-EEx)
All DW 18 switches can be supplied for high-temperature service up to max. 300°C or 570°F but
without indicator.
The switches are located in a PTFE cartridge fastened directly to the measuring unit.
Sealing material:
DW 181 / DW 182
Klingerit (asbestos-free)
DW 183 / DW 184 Klingerit or fully welded (optional)
Cable connection (350 mm or 13 ¾ ”) to
aluminium terminal housing: fibre glass sheathing
Technical data
MS 14 (NC*** or NO****) switch
Max. switching
capacity
20 VA; 0,5 A; 250 V DC
Ambient temperature -25…+60°C or
-15…+140°F
Protection category
to EN 60529/IEC 529 IP 44
Cable fitting PG 9 (supplied)
*** NC: switch that is “normally closed” during operation (closed switch when flow is increasing)
**** NO: switch that is “normally open” during operation (closed switch when flow is decreasing)
4.5 Tropical version (non-EEx)
The flow switch junction boxes are equipped with an Amphenol socket outlet for use in tropical
climates. The matching plug is also supplied.
1-5
Terminals
6
Connecting plug
Switch used Terminals used Connection data
K1 1,2
4
For switch K1
For ground connection
K2 1,2
3,5
4
For switch K1
For switch K2
For ground connection
KV1 1,2
3,4,5
For power supply
For change over (SPDT)