Type 3220- T3220 Analog Weatherproof Regulators
The Bellofram Precision Controls Type 3220 is a dual-loop analog weatherproof servo pressure controller for applications that require closed-loop pneumatic control with remote feedback capability. It accepts 4-20 mA or 0-10 VDC command signals, uses twin solenoid valves and an internal pressure sensor, and provides ±0.5% full-scale accuracy or better. The second control loop can use 0-10 VDC feedback from a remote sensor, allowing pressure to be controlled based on conditions at the process or load. The Type 3220 also provides analog pressure monitoring and can be used alone or with an external volume booster when greater airflow is required.
Features:
- Weatherproof Enclosure
- User Selectable Input
- Analog Monitor Output
- Single Loop or Dual Loop Control
- 1.25 SCFM Flow Rate
- HVAC
- Medical Devices
- Low Flow Process
- Vacuum Control
E/P Supply Requirements
15-24 VDC (80-325 mA)
Voltage Input Ranges (DC)
0-10
Current Input Ranges (mA)
4-20
Impedance Current (Ohms)
250
Logic Output
YES
Analog Monitor Output
YES
Internal Feedback (closed loop)
YES
External Feedback
OPTION
Minimum Supply Pressure (psi)
100% of output
Maximum Supply Pressure (psi)
110% of output
Output Pressure Range(s) (psi)
0-5
Flow Rate (scfm)
1.2
Exhaust Capacity (scfm) @ 5 psid
10
Exhaust Capture
YES
Air Consumption
Negligible
Repeatability (% of span, typ.)
0.2
Independent Linearity (% of span, typ.)
0.2
Hysterisis (% of span, typ.)
0.5
Accuracy (% of span, typ.)
0.5
Operating Temp (⁰C)
0⁰ - 60⁰
Output Gauge Port
no
Width x Depth x Height (in.)
2.3" x 2.3" x 5" max.
Supply Port
1/4" NPT
Output Port
1/4" NPT
Exhaust Port
No. 10-32 UNF-2B
Electrical Port (STD)
micro style 6 pin micro
Mounting Options
Pipe (in line)
Mounting Orientation Insensitivity
Excellent
External Span/Zero Adjustment
YES
Reverse Acting
OPTION
Impedance Voltage (Ohms)
10 K
Filter Output Pressure Ranges
0-10 PSIG,
0-30 PSIG
Filter Input Signal
4-20 mA,
0-10 VDC
Filter Port Size
1/4" NPT
Filter Maximum Supply Pressure
100 PSIG
Filter Maximum Accuracy
0.50%
Find Your Part Number
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