35 I DELLMECO I AODD DIAPHRAGM PUMPS
Appearance and dimensions (pump with Barrier Chamber System)
16.2. Stroke Counting (option code SC1, SC2, SC3, SC5, SC6)
a) Option code SC1, SC2, SC3
A sensor is installed in the central pump housing to count the strokes. The diaphragm movement is scanned
without contact by this sensor: a safe form of monitoring totally independent of external influences and the pump's
mode of operation. The issued sensor pulses can be output to existing detectors or to a stroke counter, which can
also be supplied on request. When the preset value is reached, the stroke counter outputs a signal which can then be
processed further, for instance in order to shut down the pump via a solenoid valve.
The stroke counting system is available in three variations:
•
SC 1 Stroke sensor (Namur), also for explosion-proof zone
• SC 2
Stroke counting system complete with sensor and stroke counter
• SC 3
Stroke counting system complete with sensor, stroke counter and controller for explosion-proof zone
In case only the sensor is included (code SC1), it has to be connected to an existing controller with Namur inlet.
For applications an explosion-proof device is required for (code SC3) the intrinsically safe controller has to be
installed between the sensor and the counter. The wiring diagram and technical data can be found on the electric
units themselves. For further details, please refer to the data delivered by the manufacturers of the components. The
controllers have to be installed in a suitable cabinet.
A
B
C
D
E
F
G
H
I
ØJ
K
L
M
N
O
P
TC
DN SMS
DM 15 / 30
150
210
299
46
1/2”
15
-
162
R 1/8”
282
18
30
116
148
139
162
206
224
DM 25 / 75
230
310
419
75
1”
25
25
204
R 1/4"
394
18
30
206
284
197
222
303
321
DM 40 / 125
256
337
465
67
1 1/2”
40
38
221
R 1/4"
440
18
30
226
307
245
275
350
370
DM 50 / 315
350
435
679
102
2”
50
51
247
R 1/4"
640
18
30
325
405
342
367
474
485
DM 65 / 565
350
507
888
126
2 1/2”
65
63.5
357
R 1/4"
842
18
30
326
483
452
477
620
632
