ATEX version products are available in the following catologues: Pneumatic products for explosive atmospheres or on our website
www.crouzet.com
33
www.crouzet.com
2
Other information
-
81 505 320
negative
Symbol
-
81 502 320
positive
Pressure to make mb
Operating pressure (non-lubricated air) bar
Orifice diameter mm
Average consumption at 4 bars Nl/min
Permissible overload for 1 hour mb
Operating temperature °C
Mechanical life operations
Weight g
Used for gaps up to 25 mm.
The supply to the sensor should be made via a
pressure regulator or one-way flow restrictor (see
page 52
Connection - sub-base
10 → 20
2 → 8
2.5
5
800
-5 ➞ +50
3 x 106
150
10 → 20
2 → 8
2.5
5
800
-5 ➞ +50
3 x 106
150
1 → 4
2 → 6
2.5
5
800
-5 ➞ +50
3 x 106
185
1 → 4
2 → 6
2.5
5
800
-5 ➞ +50
3 x 106
185
Characteristics
Connections
Simple amplifiers (for 81 372 201/401)
Sensitive amplifiers (for 81 371 401)
Version
Ampliers for mounting on installation plan
81 502 230
-
positive
81 505 230
-
negative
Part numbers
Dimensions
81 502 238 - 81 505 231 81 502 322 - 81 505 321
Black barb
Black barb
Pilot pressure
Supply
pressure
Pa
Principle of operation
Simple amplifiers
An output at normal industrial pres-
sure is delivered on a low pressure
input.
NB: Hysteresis is 20% of the pilot
pressure.
Sensitive amplifiers
An output at normal industrial
pressure is delivered on a very low
pressure input.
Note: The specifications are given
for a supply pressure of 6 bars,
and for detection at the mid-point
of the gap.
Pilot pressure
Supply
pressure
Pa
81 502 320
Positive output
81 502 230
81 505 320
With gap sensors, use an amplifier with negative output if you require a signal on interruption of the jet.
Push-in connection for
semi-rigid tubing
Ø 4 mm (NFE 49100)
1- pilot
2- supply
3- output
Negative output
81 505 230
Also available in ATEX version for use in poten-
tially explosive atmospheres in accordance with
94/9/EC Directive
ATEX version products are available in the following catologues: Pneumatic products for explosive atmospheres or on our website
www.crouzet.com
10 max.
■ Gap sensor
81525101
81527001