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Timers (with adjustable timing)
■   60
s adjustable (60 s max.)
Also available in ATEX version
for use in potentially explosive
atmospheres in accordance
with 94/9/EC Directive
Function
positive
negative
81 503 710
l
-
81 506 710
-
l
81 503 720
l
-
81 506 720
-
l
81 503 725
l
-
81 506 725
-
l
Symbol
Characteristics
Timing s
Operating pressure bar
Flow at 6 bars Nl/min
Orifice diameter mm
Accuracy %
Min. reset time s
Connection - On sub-base page 4/14-4/1 5
Operating temperature °C
Mechanical life             operations
Weight g
Accessories
0.1 ? 15
2 ? 8
170
2.7
±5
<0.1
l
-5 ? +50
> 10 7
90
0.1 ? 15
2 ? 8
170
2.7
±5
<0.1
l
-5 ? +50
> 10 7
90
0.1 ? 30
2 ? 8
170
2.7
±5
<0.1
l
-5 ? +50
> 10 7
100
0.1 ? 30
2 ? 8
170
2.7
±5
<0.1
l
-5 ? +50
> 10 7
100
0.1 ? 60
2 ? 8
170
2.7
±5
<0.1
l
-5 ? +50
> 10 7
120
0.1 ? 60
2 ? 8
170
2.7
±5
<0.1
l
-5 ? +50
> 10 7
120
Panel mounting adaptator
Weight
g
79 451 698
53
79 451 698
53
79 451 903
53
79 451 903
53
-
-
-
-
Principle
Principle of operation
4
The operation of these pneumatic timers is similar to that of
electronic timers (circuit with capacitor/resistor)
Timing by charging of reservoir
with positive output
Time
with negative output
Time
The reservoir fills via the flow restrictor until the switching point
of the timer output is reached (positive or negative).
The non-return valve allows the reservoir to be emptied rapidly
for the next timing.
Dimensions
L (mm)
Adaptator 79 451 . . .
81 503 710 - 81 506 710
81 503 720 - 81 506 720
81 503 725 - 81 506 725
78
92
125
For panel mounting, a pre-drilled
hole ? 10.5 mm si required
ATEX version products are available in the following catologues: Pneumatic products for explosive atmospheres or on our website
www.crouzet.com
50
www.crouzet.com
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