8. Frequently Asked Questions (FAQ)

Q1: What type of pressure does the 621‑3552RC measure?

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

Q2: What is the maximum pressure range?

A2: The sensor supports up to 3550 PSI.

Q3: What output signals are available?

A3: It provides selectable 4–20 mA or 0–10 VDC analog outputs.

Q4: How accurate is this sensor?

A4: Accuracy is approximately ±0.5% of full scale.

Q5: What media is compatible?

A5: Compatible with air, inert gases, and non‑corrosive hydraulic fluids.

Q6: What environmental protection does it have?

A6: Rated IP67, it is dust-tight and resistant to temporary immersion in water.

Q7: What connection does it use?

A7: Uses a standard 1/4″ NPT male mechanical connection and a sealed 3‑pin electrical connector.

Q8: What temperature range can it operate in?

A8: Operates from –40°C to +125°C.

Q9: Is it suitable for mobile machinery?

A9: Yes, it is rugged enough for mobile equipment like cranes, loaders, and excavators.

Q10: Does it require recalibration?

A10: The sensor is factory‑calibrated, but periodic verification may be required depending on application requirements.