8. Frequently Asked Questions (FAQ)

Q1: What type of pressure does the 621‑2201 measure?

A1: It measures gauge pressure, relative to atmospheric pressure.

Q2: What is the pressure range?

A2: 0–2200 PSI, suitable for high-pressure industrial applications.

Q3: What is the difference between 621‑2201 and 621‑2201R?

A3: The R version is reinforced for corrosion resistance, offering enhanced protection against moisture, chemicals, and harsh environments.

Q4: What output signals are available?

A4: Selectable 4–20 mA or 0–10 VDC analog outputs.

Q5: What is the accuracy?

A5: ±0.5% of full scale.

Q6: Can it operate outdoors in extreme temperatures?

A6: Yes, the operating range is –40°C to +125°C.

Q7: Which media are compatible?

A7: Air, inert gases, and non-corrosive hydraulic fluids.

Q8: What type of mechanical connection does it use?

A8: Standard 1/4″ NPT male threaded connection.

Q9: Is periodic calibration required?

A9: Factory-calibrated; periodic verification is recommended for critical systems.

Q10: Which industries commonly use this sensor?

A10: Industrial automation, hydraulics, mobile machinery, HVAC/R systems, water/wastewater treatment, and energy systems.