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| Description |
Series 8731 mechanical pressure switches in a piston variant open or close a circuit, depending on whether the pressure is dropping or rising. An adjustment knob enables easy, convenient and continuous setting of the required switch point.
Optionally, aumarg offers its customers the factory setting of the switch point.
Series 8731 mechanical pressure switches are employed wherever compressed air, neutral and self-lubricating fluids or neutral gases are used and customers, due to their spatial conditions, have special requirements regarding the installation of the pressure switch.
The high reproducibility of ±2 % of the switch point and the setting via the adjustment knob is interesting for customers for whom precision plays an important part. In addition, the individual orientation of the pressure switch makes the Series 8731 attractive for customers who set value on the adaptation of the switch to their specific space conditions. |
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| Technical Specification |
| Type |
8731 |
| Name |
Pressure Switch |
| Adjustment range |
10 ... 30 to 30 ... 320 bar |
| Measurement element |
Piston |
| Max. system pressure |
350 bar |
| Max. hysteresis |
5 ... 10%, not adjustable |
| Switching function |
SPDT、 NO 、 NC |
| Switched voltage |
~ 250 V AC / ~ 24 V DC |
| Max. switched current resistive load |
AC:6A / DC: 3 A |
| Mechanical lifetime |
> 5×106 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 |
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M12×1 (4-pin) |
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Cable outlet |
| Pressure fitting |
G1/4"male |
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1/4NPT"male |
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R1/4"male |
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M10×1male |
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G1/4"female |
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R1/4"female |
| Temperature range of medium |
NBR：-20 ... +80°C |
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NBR-LowTemp：-40 ... + 80°C |
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EPDM：-40 ... +100°C |
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FVMQ：-40 ... +100°C |
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Viton: 0 ... + 100°C |
| Applications |
Hydraulics |
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Construction machinery |
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Machinery manufacturing |
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Features |
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• Adjustment range:10 ... 30 bar to 30 ... 320 bar |
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• Piston with PTFE - sealing |
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• Change over contact SPDT, NC, NO |
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• E-connection: DIN 175301-803 A or M12 x 1 |
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• Power rating:~250 V AC or ~ 24 VDC / 4 A |
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• 360° turnable fluid connection |
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