Emerson PS3 Manual De Usuario
PS3
Pressure Switch
Alco Controls
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PS3__35003_EN_R08.doc 3
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09.08.2011
Selection
1. Preferred types
Type
PCN
Fixed setting
(bar)
Reset Max. temperature
pressure
Leakage
test
pressure
Pressure
connection
Cut-out Cut-in
ambient
connection (bar)
High Pressure Controls
PS3-A6S
0 715 603
16,0 11,0
7/16"-20
UNF
PS3-A6S
0 715 604
19,0 15,0 Auto + 70
°
C
+ 150
°
C
48
female thread with
PS3-A6S
0 715 600
26,5 22,5
Schrader
opener
Low Pressure Controls / Pressure Limiter for low pressure protection PSL EN 12263
PS3-W1S
0 714 760
-0,3 1,2
7/16"-20
UNF
PS3-W1S
0 714 761
0,3 1,8 Auto + 70
°
C
+ 70
°
C
30
female thread with
PS3-W1S
0 714 762
2,0 3,5
Schrader
opener
Pressure Limiter for high pressure protection PSH with snubber for direct compressor mounting EN 12263
PS3-W6S
0 715 831
14,0 10,0
PS3-W6S
0 715 556
21,0 16,0
7/16"-20
UNF
PS3-W6S
0 715 555
25,0 20,0 Auto + 70
°
C
+ 150
°
C
48
female thread with
PS3-W6S
0 715 567
29,0 23,0
Schrader
opener
PS3-W6S
0 715 550
33,5 27,5
and
snubber
PS3-W6S
0 715 553
40,0 33,0
Pressure Cut Out for high pressure protection PZH with snubber for direct compressor mounting EN 12263
PS3-B6S
0 715 568
19,2
PS3-B6S
0 715 564
22,7 appr. external
7/16"-20
UNF
PS3-B6S
0 715 563
27,3 5
bar manual + 70
°
C
+ 150
°
C
48
female thread with
PS3-B6S
0 715 569
29,5 below reset
Schrader
opener
PS3-B6S
0 715 560
36,0 cut-out
and
snubber
Delivery: small quantities, single package without plug (Cables with plug must be ordered separately, see page 8)
2. Customer specific types
Minimum batch size: 100 pieces
Switching points
The differential of factory set switch points can be adjusted
within the limits given in the charts on page 4 to 6. Use the
recommended lower switch point line in working envelope for
optimum results.
within the limits given in the charts on page 4 to 6. Use the
recommended lower switch point line in working envelope for
optimum results.
Example:
Step 1: Select your desired upper switch point P
Step 1: Select your desired upper switch point P
1
. Draw a
horizontal line to cross the upper switch point line.
Step 2: Draw a vertical line from this intersection point.
Step 3: Select your desired switch point between P
Step 3: Select your desired switch point between P
2
and P
4
.
Notes:
1. Specify always upper and lower switching points for
1. Specify always upper and lower switching points for
pressure switch with automatic reset function.
2. Specify only cut-out switching point for pressure switch
with manual reset function.
3. For versions with micro-switch only one switching point can
be adjusted while the second switching point is determined
by the fixed differential of the micro-switch (see Pressure
Ranges on page 2).
by the fixed differential of the micro-switch (see Pressure
Ranges on page 2).
4. Specify such devices with one switching point as the
significant point and the other one as non-significant by
putting the latter in brackets, e.g. PS3-AJS 2.0/(1.8)
putting the latter in brackets, e.g. PS3-AJS 2.0/(1.8)
Example
0
10
20
30
40
0
1
2
3
4
5
6
7
8
9
10
11
P
1
P
2
P
3
P
4
max. lower..
min. lower...
recommended lower ...
... switching point
Upper switching point
pressure
(bar)
(bar)