IFM Electronic PA32xx Series User manual

Installation Instructions
Electronic pressure sensor
PA32xx
704091 / 01 08 / 2010
UK

2
1 Safety instructions
• Please read the product description prior to installing the unit.
• Ensure that the product is suitable for your application without any restrictions.
• If the operating instructions or the technical data are not adhered to, personal
injury and/or damage to property may occur.
• Please check for all applications that the product materials (see Technical data)
are compatible with the media to be measured.
• Use in gases at pressures > 25 bar only after contacting the manufacturer ifm.
For units with cULus approval and the scope of validity cULus:
The device shall be supplied from an isolating transformer having a secondary
Listed fuse rated as noted in the following table.
Overcurrent protection
Control-circuit wire size Maximum protective device rating
Ampere
AWG (mm2)
26 (0.13) 1
24 (0.20) 2
22 (0.32) 3
20 (0.52) 5
18 (0.82) 7
16 (1.3) 10
The Sensor shall be connected only by using any R/C (CYJV2) cord, having
suitable ratings.
Contents
1 Safety instructions ................................................................................................2
2 Function and features ...........................................................................................3
2.1 Applications ....................................................................................................3
3 Installation ............................................................................................................4
4 Electrical connection.............................................................................................4
5 Scale drawing .......................................................................................................5
6 Technical data .......................................................................................................6

3
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2 Function and features
The pressure sensor detects the system pressure and converts it into an analog
output signal.
• 4 ... 20 mA
2.1 Applications
• Type of pressure: relative pressure
Order no. Measuring range Permissible
overload pressure
Bursting
pressure
bar PSI bar PSI bar PSI
PA3220 0...400 0...5 800 600 8 700 1 000 14 500
PA3221 0...250 0...3 625 400 5 800 850 12 300
PA3222 0...100 0...1 450 300 4 350 650 9 400
PA3223 0...25 0...363 150 2 175 350 5 075
PA3224 0...10 0...145 75 1 087 150 2 175
PA3226 0..2.5 0...36.3 20 290 50 725
PA3227 0...1 0...14.5 10 145 30 450
PA3228 0...0.25 0...3.63 10 145 30 450
MPa = bar ÷ 10 / kPa = bar × 100
Static and dynamic overpressures exceeding the indicated overload
pressure are to be avoided by taking appropriate measures.
The indicated bursting pressure must not be exceeded. Even if the bur-
sting pressure is exceeded only for a short time, the unit can be destroyed.
NOTE: Risk of injury!
Use in gases at pressures > 25 bar only after contacting the manufacturer ifm.
High-pressure units (400 bar) are supplied with an integrated damping device to
avoid any risk of injury in case of bursting when bursting pressure is exceeded.
When the damping device is removed it can become unusable.
If you have any questions, please contact ifm electronic‘s sales specialists.

4
3 Installation
Before mounting and removing the sensor, make sure that no pressure is
applied to the system.
► Insert the unit in a ¼‘‘ NPT process connection.
► Tighten firmly.
4 Electrical connection
The unit must only be connected by an electrician.
The national and international regulations for the installation of electrical
equipment must be observed.
Voltage supply to EN50178, SELV, PELV.
► Disconnect power.
► Connect the unit as follows:








 






Core colours of ifm sockets:
1 = BN (brown), 2 = WH (white), 3 = BU (blue), 4 = BK (black),
n.c. = not connected.

5
UK
5 Scale drawing

 








 






PA3221 ... PA3228 PA3220
Dimensions are in millimeters