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PK7521

Pressure switch with intuitive switch point setting

PK-250-SFG14-QSPKG/US/ /W

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Your ifm team

  • Simple switch point setting by means of two setting rings allowing optimum reading
  • High long-term stability thanks to robust stainless steel measuring cell with high permissible pressure rating
  • Mechanical locking prevents inadvertent switch point manipulation
  • Lifespan of more than 50 million pressure cycles
  • For use in hydraulics, pneumatics, air-conditioning and refrigeration
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Technische Details
Product characteristics
Output signal switching signal
Measuring range
0...250 bar 0...3625 psi
Process connection threaded connection G 1/4 external thread internal threadM5
Application
Application for industrial applications
Media liquids and gases
Medium temperature [°C] -25...80
Pressure rating
400 bar 5800 psi
Min. bursting pressure
1000 bar 14500 psi
Type of pressure relative pressure
Electrical data
Operating voltage [V] 9.6...32 DC
Current consumption [mA] < 25
Min. insulation resistance [MΩ] 100; (500 V DC)
Protection class III
Reverse polarity protection yes
Inputs / outputs
Number of inputs and outputs Number of digital outputs: 2
Outputs
Total number of outputs 2
Output signal switching signal
Electrical design PNP
Number of digital outputs 2
Output function normally open
Max. voltage drop switching output DC [V] 2
Permanent current rating of switching output DC [mA] 500
Switching frequency DC [Hz] 100
Short-circuit protection yes
Type of short-circuit protection pulsed
Overload protection yes
Measuring/setting range
Measuring range
0...250 bar 0...3625 psi
Set point SP
7.5...250 bar 109...3625 psi
Hysteresis
5 bar 72 psi
Accuracy / deviations
Switch point accuracy [% of the final value] < ± 2,5; (Setting accuracy)
Repeatability [% of the final value] < ± 0,5; (with temperature fluctuations < 10 K)
Characteristics deviation [% of the final value] < ± 1,5 (BFSL) / < ± 2,5 (LS); (BFSL = Best Fit Straight Line; LS = limit value setting)
Temperature drift per 10 K < ± 0.5
Software / programming
Adjustment of the switch point setting rings
Operating conditions
Ambient temperature [°C] -25...80
Storage temperature [°C] -40...100
Protection IP 67
Tests / approvals
EMC
DIN EN 61000-6-2
DIN EN 61000-6-3
Shock resistance
DIN IEC 68-2-27 50 g (11 ms)
Vibration resistance
DIN IEC 68-2-6 20 g (10...2000 Hz)
MTTF [years] 500
Pressure Equipment Directive Sound engineering practice; can be used for group 2 fluids; group 1 fluids on request
Mechanical data
Weight [g] 94.5
Materials PBT; PC; FKM; stainless steel (1.4404 / 316L)
Materials (wetted parts) stainless steel (1.4404 / 316L); FKM
Min. pressure cycles 50 million
Tightening torque [Nm] 25
Process connection threaded connection G 1/4 external thread internal threadM5
Restrictor element integrated no (can be retrofitted)
Displays / operating elements
Display
switching status 2 x LED, yellow
With scale yes
Remarks
Pack quantity 1 pcs.
Electrical connection
Connection Connector: 1 x M12
ifm electronic gmbh • Friedrichstraße 1 • 45128 Essen — We reserve the right to make technical alterations without prior notice. — EN-GB — PK7521-00 — 29.04.2014 —