PA-838 series is a pressure transducer with amplifier produced by Copal Electronics. The product has high corrosion resistance, built-in amplifier circuit, temperature compensation function and current output mode.
The PA-838 series are pressure transducers with an integrated amplifier, offering high corrosion resistance through a double‑diaphragm construction and temperature compensation from 0 °C to 50 °C. Various fitting options (G 1/8, R 1/4, VCR) and output current ranges of 4–20 mA are provided.
The document lists detailed mechanical dimensions, material specifications (SUS 316L diaphragm, aluminum housing), standard electrical parameters (24 V DC supply, 250 Ω load), and environmental ratings such as operating temperature –20 °C to 70 °C and humidity 35‑85 %RH.
| Operating temperature range | –20 °C to 70 °C |
|---|---|
| Compensated temperature range | 0 °C to 50 °C |
| Output current | 4–20 mA |
| Supply voltage | 24 V DC |
| Ripple content | max 10 % (peak‑to‑peak) |
| Linearity / Hysteresis | ±0.05 % |
| Thermal error (zero) | ±0.05 % FS/°C |
| Response time | ≈2 ms |
| Net weight | ≈140 g |
| Pressure port options | G 1/8, R 1/4, VCR |
The transducer provides a 4–20 mA output current.
It operates from a 24 V DC supply.
The device can operate from –20 °C to 70 °C.