The PS8 is a solid-state pressure switch produced by Copal, which has the characteristics of no mechanical moving parts, high corrosion resistance, two pressure setting points, and wide pressure medium compatibility.
The PS8 series from Copal Electronics are solid‑state pressure switches featuring a stainless‑steel SUS 316L diaphragm, double‑diaphragm construction with silicone oil, and a silicone sensor chip. They are offered with various pressure‑reference options (G for gauge, V for vacuum) and standard 3/8" (PF 3/8) fittings.
The datasheet lists the electrical and environmental specifications, including a supply voltage of 12‑24 V DC (+10%), operating temperature range of –20 °C to 70 °C, NPN open‑collector outputs (2 channels), and a maximum switching capacity of 380 V DC at 80 mA. Detailed dimensions, wiring diagrams, and environmental test limits (vibration, shock, moisture) are also provided.
| Diaphragm material | Stainless steel SUS 316L |
|---|---|
| Pressure reference options | Gauge (G) or Vacuum (V) |
| Supply voltage | 12 ~ 24 V DC (+10%) |
| Operating temperature range | –20 °C to 70 °C |
| Maximum pressure | 196 kPa (2 kgf/cm²) – 1961 kPa (20 kgf/cm²) |
| Output interface | NPN open‑collector, 2 outputs |
| Hysteresis | Up to 2 % FS |
| Switching capacity | 380 V DC, 80 mA max |
| Response time | ≈ 2 ms |
| Net weight | ≈ 120 g |
The PS8 switches operate from a 12 V to 24 V DC supply, with a tolerance of ±10 %.
They can be used from –20 °C up to 70 °C.
Each unit provides two NPN open‑collector outputs.
The hysteresis can be set up to 2 % of full scale.