Ueda Seisakusho
Ueda Seisakusho PU7 Series Pressure Switch
Manufacturer: Ueda Seisakusho Co., Ltd.
Model : PU7 series
Features
- The PU7 series is suitable for narrowing the open/close pressure difference (ON-OFF width) and for upper limit alarm (single point setting) or lower limit alarm (single point setting).
- The adjustment screw is fixed with a vibration and abuse prevention bracket.
- A phosphor bronze bellows is used for the pressure receiving part.
- Stainless steel (SUS316) bellows can also be selected for corrosive fluids, hot water, etc.
Product Information
| Item | Specification |
|---|---|
| Product Name | Indoor pressure switch |
| Size | W.80 x D.48 x H.115 mm |
| Protection structure | IP40 (IEC529) equivalent |
| Durability | Electrical & Mechanical Life: 300,000 times or more |
| Weight | Approx. 0.45 kg |
| Pressure Receiving Part | Bellows Type |
| Material | Phosphor bronze |
| Insulation Resistance | DC 500V Megger — 100 MΩ or more |
| Dielectric Strength | AC 2,000V for 1 minute |
Option
- Pressure receiving part made of stainless steel (SUS316)
- Body mounting feet (brackets) included
- Low voltage and low current compatible products
- Compatible with various connection sizes
Specifications
| Model | Pressure Adjustment Range (Range) MPa | ON-OFF Pressure Differential Range (Diff.) MPa | Pressure Resistance (MPa) | ||
|---|---|---|---|---|---|
| Minimum | Maximum | Smallest | Largest | ||
| PU7-03-R3 | 0 | 0.3 | 0.02 | 0.06 | 1.0 |
| PU7-06-R3 | 0 | 0.6 | 0.03 | 0.08 | 1.0 |
| PU7-10-R3 | 0.1 | 1.0 | 0.035 | 0.1 | 1.5 |
| PU7-20-R3 | 0.2 | 2.0 | 0.09 | 0.2 | 2.5 |
| PU7-30-R3 | 0.5 | 3.0 | 0.14 | 0.28 | 3.5 |
Model Code Explanation
| (A) | 06 = Maximum pressure adjustment range: 0.6 MPa |
| (B) | RC2 = Connection diameter Rc 1/4 (PT 1/4 thread) RC3 = Connection diameter Rc 3/8 (PT 3/8 thread) ※Note 1 R2 = Connection diameter R 1/4 (PT 1/4 thread) R3 = Connection diameter R 3/8 (PT 3/8 thread) F6 = Connection diameter φ6 mm copper tube with flare nut ※Notes 1 & 2 |
| (C) | No symbol = Bellows housing material: Phosphor bronze, brass ※Standard S = Bellows housing material: Stainless steel (SUS316) |
| (D) | No symbol = Without main body mounting bracket B = With main body mounting bracket |
- Note 1: Only supports phosphor bronze specification for connection parts.
- Note 2: For φ6 flare type connections, the product comes with a main body mounting bracket.
Electrical Rating Table
| Voltage (V) | AC (A) | DC (A) |
|---|---|---|
| 24 | – | 3 |
| 48 | – | 1.5 |
| 110 | 10 | 0.5 |
| 220 | 10 | 0.25 |
| 440 | 5 | – |
