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3 Scope of delivery
The scope of delivery includes:
• 1x electromechanical pressure switch PM1 with 3 m or 7 m cable
• 2x mounting screws, for flange version
• O-ring, for flange version
• Operating instructions
4 About This Product
4.1 Product description
The PM1 is used to open or close an electrical contact when a pre-set pressure
range is reached.
4.2 Performance specifications
An appropriate medium is applied to the PM1 at the G1/4 connection or on the
flange. A bellow actuates a microswitch (change-over switch) via a mechanism
once the preset switching pressure is reached.
The contact switches (see g Fig. 5 and g Fig. 6)
• if the pressure increases from 1-2 to 1-3,
if the pressure decreases from 1-3 to 1-2.
• if the underpressure increases from 1-3 to 1-2,
if the underpressure decreases from 1-2 to 1-3
4.3 Overview of PM1 pressure switch, ATEX certified
4.3.1 Pneumatic flange connection
1
Ø5,2
1,15
20
30
2
2
Fig. 1: Pneumatic flange connection
1 O-ring ø 5x1.5 (included in scope of
delivery)
3 Cylinder screw M5x30 ISO 1207 (2x);
MA = 2.5+0.5 Nm (included in scope
of delivery)
AVENTICS™ PM1 | R412018626-BAL-001-AI | English
5
5
30
3
48,5
2 Adjustment screw for fine adjust-
ment, self-holding
4.3.2 Pneumatic connection, internal thread G1/4
Ø5,2
20
30
5
2
2
Fig. 2: Pneumatic connection, internal thread G1/4
1 Connection G1/4, MA = 12+0.1 Nm
For material numbers, please refer to the online catalog.
4.4 Product identification
Observe the product information on the product and packaging.
u
The ATEX information can be found on the back of the product.
4.5 Identification on the name plate
16
15
1
2
14
Set 1,5 b ....
20W19
13
AVENTICS GmbH, Ulmer Straße 4, 30880 Laatzen, Germany
12
Fig. 3: Name plate
1 Internal factory designation
3 EAC mark
5 CE mark
7 Operating pressure range
9 Max. current consumption
11 Serial number
13 Date code*
15 Wiring diagram
*)
The first four digits of the 7-digit date code show the year and the last two show
the week.
II 3G Ex nc IIC T4 GC
II 3D Ex tc IIIC T135 °C Dc
-20 °C ≤ T amb ≤ 80 °C
Cert-No. EPS 21 ATEX 1 188 X
BETRIEBSANLEITUNG BEACHTEN
OBSERVE OPERATING INSTRUCTIONS
Fig. 4: Back side name plate
G1/4"
1
30
48,5
2 Adjustment screw for fine adjust-
ment, self-holding
2
3 4
5
1
6
Made in Germany
R412XXXXXX - PM1
7
pe
0,2 - 16bar
7290
8
3
U
30 V DC / 250 V AC
max
I
3 A
9
max
ZZZZ
S
90 W / 750 VA
max
10
11
2 Country of manufacture
4 Specialist marking
6 Material number
8 Max. permissible voltage
10 Max. power consumption
12 Manufacturer's address
14 Customer-specific switching pressure
16 Manufacturer logo
9
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