Foxboro 761CNA-AT Single Station Micro Controller – Product Description

Description / Overview

The Foxboro 761CNA-AT is a single-station pneumatic controller designed for stable and precise industrial process control. It converts a pneumatic input signal into a regulated pneumatic output to manage variables such as pressure, temperature, flow, and level. Moreover, its proven force-balance mechanism delivers exceptional accuracy and fast dynamic response. This makes the controller a dependable choice for facilities that require consistent regulation in demanding environments.

Technical Data / Specifications

• Model: 761CNA-AT

• Series: Foxboro 761C Pneumatic Controllers

• Type: Pneumatic Controller

• Input Signal: 3–15 psi (20–100 kPa) pneumatic

• Output Signal: 3–15 psi (20–100 kPa) pneumatic

• Control Modes: Proportional, Reset (Integral), Derivative, PID

• Proportional Band: Adjustable 4–400%

• Reset (Integral): Adjustable 0.01–50 min/repeat

• Derivative: Adjustable 0.05–50 minutes

• Accuracy: ±0.25% of span typical

• Response Time: ≤2 seconds

• Terminal Block: 32-position wiring block

• Input Power: 120 VAC, 50/60 Hz

• Operating Pressure Range: 3–15 psi standard

• Operating Temperature: –40 °C to +85 °C

• Humidity: 5%–95% non-condensing

• Protection Class: NEMA 3 / IP53

• Weight: 8.00 lbs

• Country of Origin: USA

FAQ

Q1: What kind of signal does the controller support?
A1: It works with a standard 3–15 psi pneumatic signal for both input and output.

Q2: Does the 761CNA-AT support PID control?
A2: Yes, it includes proportional, integral, derivative, and full PID modes.

Q3: What is the typical response time?
A3: The controller responds in ≤2 seconds, making it suitable for dynamic loops.

Q4: Can it withstand harsh industrial environments?
A4: Yes, the NEMA 3/IP53 housing ensures protection against dust and moisture.

Q5: Which industries commonly use this model?
A5: Oil & gas, chemical plants, refineries, power stations, pulp & paper mills, and steel facilities.