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| Description |
Series 8721 compact pressure switches in a piston 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 8721 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 8721 pressure switches interesting for all customers who place a value on precision as well as an attractive price. |
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| Technical Specification |
| Type |
8721 |
| Name |
Pressure Switch |
| Adjustment range |
10 ... 30 to 30 ... 320 bar |
| Measurement element |
Piston |
| Max. system pressure |
350 bar |
| Max. hysteresis |
5 ... 15%， 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 |
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M12×1 (4-pin) |
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Cable outlet |
| Pressure fitting |
G1/8" male |
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G1/4" male |
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1/8NPT" male |
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1/4NPT" male |
| 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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• Snap action micro switch |
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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、M12 x 1 or cable outlet |
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• Power rating: ~250 V AC or ~ 24 VDC / 4 A |
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