Series 8720 - Compact Pressure Switch
Membrane Pressure Switch
 
 
Description
Series 8720 compact pressure switches in a diaphragm design open or close a circuit, depending on whether the pressure is falling or rising. With one adjustment screw, respectively, the required switch point and the switch hysteresis can also be easily and conveniently set on-site.

Optionally, aumarg offers its customers the factory setting of the switch point.

Series 8720 compact mechanical pressure switches are employed wherever compressed air, neutral and self-lubricating fluids or neutral gases are used and a precisely set switch hysteresis is needed.

The high reproducibility of the switch point of ±2 % and the adjustable switch hysteresis make the Series 8720 pressure switches interesting for all customers who place a value on precision as well as an attractive price.
 
Technical Specification
Type 8720
Name Pressure Switch
Adjustment range 0.2 ... 2 to 1 ... 16 bar
Measurement element Membrane
Max. system pressure 60 bar
Max. hysteresis 5 ... 20%, adjustable
Switching function SPDT、 NO 、 NC
Switched voltage ~ 250 V AC / ~ 24 V DC
Max. switched current resistive load 4 A
Mechanical lifetime > 2×106 cycles
Switching frequenzy Max. 100 cycles / min
Material of housing zinc plated steel / stainless steel
Material of membrane NBR 、 NBR-LowTemp 、 EPDM 、 FVMQ 、 Viton
Electrical connection DIN 175301-803 A
  M12×1 (4-pin)
  Cable outlet
Pressure fitting G1/8" male
  G1/4" male
  1/8NPT" male
  1/4NPT" male
Temperature range of medium NBR:-20 ... +80°C
  NBR-LowTemp:-40 ... + 80°C
  EPDM:-40 ... +100°C
  FVMQ:-40 ... +100°C
  Viton: 0 ... + 100°C
Applications Pneumatic
  Automatic production line
  Mechanical equipment
 
  Features
  Adjustment range:0,2 ... 2 bar to 1 ... 16 bar
  Snap action micro switch
  Elastomer membrane
  Change over contact SPDT, NC, NO
  E-connection: DIN 175301-803 A、M12 x 1 or cable outlet
  Power rating:~ 250 V AC or ~ 24 V DC / 4 A