Ueda Seisakusho PM-50 Series Pressure Switch

Manufacturer: Ueda Seisakusho Co., Ltd.
Model : PM-50 series

Features

The PM-50 series is a general-purpose pressure switch that is widely used in all industries.
This pressure switch has a built-in microswitch in the contact area, making it suitable for situations where you want to set a narrow opening and closing pressure difference (ON-OFF width).
For DC use with a large current, a DC microswitch is built in.
A metal bellows (phosphor bronze or SUS316) is used in the pressure receiving area, and the snap action switch with fewer malfunctions and variations and the quick action mechanism at the end of the main operating lever make this a highly reliable pressure switch with less accumulated error.

Item	Specification
Product Name	Indoor General-purpose Pressure Switch
Size	W.126.5×D.74×H.171.5 mm
Protection Structure	IP40 (IEC529) equivalent
Durability	Electrical & Mechanical Life: 300,000 times or more
Weight	Approx. 1.3 kg
Pressure Receiving Part	Bellows Type
Material	Phosphor Bronze

Model	Pressure Adjustment Range (Range) MPa		ON-OFF Pressure Differential Range (Diff.) MPa		Pressure Resistance (MPa)
Model	Minimum	Maximum	Smallest	Largest	Pressure Resistance (MPa)
PM-501-R3B	0	0.12	0.006	0.04	1.0
PM-502-R3B	0.01	0.5	0.01	0.15	1.5
PM-503-R3B	0.05	1.0	0.015	0.2	1.5
PM-504-R3B	0.2	2.0	0.05	0.3	2.5
PM-505-R3B	0.5	4.0	0.08	0.5	5.0
PM-506-R3SB	0.5	6.0	0.15	0.5	10.0
PM-507-R3SB	1.0	8.0	0.25	0.5	10.0

*PM-506 and PM-507 are for high pressure control and the standard material for the pressure receiving part is stainless steel (SUS316).

(A)	50 = Indoor General Purpose Type 60 = Indoor Pressure-Resistant / Drip-Proof Type
(B)	3 = Pressure Adjustment Range (Refer to Specification Table)
(C)	No Symbol = With Micro Switch (Standard) DC = With Micro Switch for Low Current DC10 = With Micro Switch for High Voltage (DC10)
(D)	R3 = Connection Diameter R3/8 (PT3/8 Thread) G3 = Connection Diameter G3/8 (PF3/8 Thread) F6 = Connection Diameter ø6mm Copper Tube with Aluminum Ferrule *Note 1
(E)	No Symbol = Bellows Housing Material: Brass, Nickel Plated S = Bellows Housing Material: Stainless Steel (SUS316)
(F)	No Symbol = Without Main Unit Mounting Bracket B = With Main Unit Mounting Bracket

Note 1: The material for the connection part is only available in phosphor bronze specification.
Note 2: When the connection part is a φ6 flare type, the specification will be with main unit mounting bracket (with bracket).