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Pressure Switches, Series PM1

▶ Operating pressure: -0.9 - 16 bar ▶ mechanical ▶ electr. connection: Plug, ISO 4400, form A ▶ Spring-loaded bellow, adjustable

Measurement	Relative pressure
Switching element	microswitch (input/output)
Switching frequency	1,5 Hz
Protection against overpressure	80 bar
Ambient temperature min./max.	-20°C / +80°C
Medium temperature min./max.	-10°C / +80°C
Medium	Compressed air hydraulic oil
Shock resistance max. (XYZ direction)	15 g
Vibration resistance (XYZ direction)	10 g (60 - 500 Hz)
Switching point	adjustable
Hysteresis	max. switching pressure difference
DC operating voltage min./max.	12 V - 125 V
Operational voltage AC min./max.	12 V - 250 V
Mounting orientation	Any
Mounting types	via through holes
Function	change-over contact (mechanical)
Protection class	IP 65
Weight	0,16 kg

Materials:

Housing	Aluminum
Seals	Acrylonitrile Butadiene Rubber
Bellow	Brass
Electr. connection	Brass, nickel-plated

Technical Remarks
■	Switching function increasing pressure: contact switches from 1-2 to 1-3. Switching function decreasing pressure: contact switches from 1-3 to 1-2.
■	Notice: Too-high currents can damage contacts. Inductive or capacitive loads must be equipped with appropriate spark-quenching!
■	The microswitch has silver-plated contacts.

Type	Operating pressure range min./max.	Compressed air connection	Repeatability (% of full scale value)	Fig.	Note	Part No.
	[bar]
PM1-M3-G014	-0,9 / 0	internal thread, G1/4	± 1 %	Fig. 1	2)	R412010711
PM1-M3-G014	0,2 / 16	internal thread, G1/4	± 1 %	Fig. 1	1); 3)	R412010712
PM1-M3-G014	0,2 / 16	internal thread, G1/4	± 1 %	Fig. 1	1); 2)	R412010713
PM1-M3-F001	-0,9 / 0	Flange with O-ring, Ø 5x1,5	± 1 %	Fig. 2	2)	R412010714
PM1-M3-F001	0,2 / 16	Flange with O-ring, Ø 5x1,5	± 1 %	Fig. 2	1); 3)	R412010715
PM1-M3-F001	0,2 / 16	Flange with O-ring, Ø 5x1,5	± 1 %	Fig. 2	1); 2)	R412010718

1) Min. switching pressure range 0.2 bar falling/0.5 bar rising

2) Scope of delivery: with electrical connector
3) Scope of delivery: without electrical connector

Fig. 1

1) Electrical connector
2) Adjustment screw, self-holding

Fig. 2

1) Electrical connector
2) Adjustment screw, self-holding
3) cylinder screw M5x30 (included in scope of delivery)
4) O-ring Ø5x1,5 (included)

PIN assignment for electrical connector

1) +UB
2) break contact
3) make contact
4) GND

differential switching pressure characteristic curve (-0,9 – 0 bar)

A) p1 (-), min.
B) p1 (-), max.
p1 (+) = upper switching pressure with increasing pressure
p1 (-) = lower switching pressure with decreasing pressure

differential switching pressure characteristic curve (0,2 ‒ 16 bar)

A) p1 (-), min.
B) p1 (-), max.
p1 (+) = upper switching pressure with increasing pressure
p1 (-) = lower switching pressure with decreasing pressure
Δ p1 = max. operating pressure difference or hysteresis Example: p1 (+) = 8 bar > p1(-) = 7.6 bar Δ p1 = 0.4 bar

max. permissible continuous current I max. [A] with ohmic load

reference cycle: 30/min., reference temperature: +30°C

1) AC

2) DC

max. permissible continuous current I max. [A] with inductive load

reference cycle: 30/min., reference temperature: +30°C

1) AC

2) DC

3) cos ≈ 0,7°

4) L/R ≈ 10 ms