KROHNE DW 181-182-183-184 EN - Manual (Page 8)

8 Installation and operating instructions DW 181 - 184
Type code
Refer to the standard device label, item 2 on the previous page.
DW . . . / . / . . . . / . . / . / . . . / . . / . .
1 2 3 4 5 6 7 8
Type code element
Code Code definition
1 Type series 181
182
183
184 For horizontal or vertical pipes, screw
connection G¾…G2, measuring system C or
E*
For horizontal or vertical pipes, flange
connection DN15…65 and ½”…2”-150 lbs,
measuring system C or E*
For horizontal or vertical pipes, flange
connections DN65…200 and 3”…8”-150 lbs,
measuring system P*
For horizontal pipes (DN ≥250 or 10”, mounting
flange DN150 PN16 or 6”-150 lbs, measuring
system P*
2 Measuring system C
E
P Measuring disc in tapered tube
Nozzle with baffle
Baffle in constant diameter pipe
3 Code number 011 - 204 See section 7.1: Flow range table for the
characteristics of each code number.
4 Material of construction
- see also section 7.2 B
RR
R
N Bronze
Stainless steel (SS) 316 L
SS 316L measuring tube, steel connection
Steel
5 Indicator system G
A Linear scale marks
Dial with flow units
6 Limit switches K1
K2
KV1
KV2 1 NC or 1 NO switch**
1 NC and 1 NO switch**
Amplifier relay: 1 change-over switch**
Amplifier relay: 2 change-over switches**
7 Application field N
Ex d
Ex ia Normal locations
Hazardous locations
Intrinsically-safe applications
8 Connection G ¾…G2
DN15…200
(½”…8”) Pipe thread
Flange connection
* Refer to section 9.1
** Bistable.
NO is a “normally open” switch during operation (closed switch when flow is decreasing)
NC is a “normally closed” switch during operation (closed switch when flow is increasing).