Gas Flow Controllers - Analog Products - Model 221

Porter Mass Flow products reflect over four decades of experience in the design and manufacture of precision instruments for the measurement and control of gas flow. They incorporate design principles that are simple and straightforward, yet flexible enough to operate under a wide variety of process parameters. The result is flowmeters, flow controllers and control valves that are accurate, reliable and cost-effective solutions for many gas flow applications in the analytical, process, chemical/petrochemical, environmental, biopharmaceutical and research markets.

The 200 series is the lastest evolution of the original Porter Analog MFC. With thousands installed worldwide, they are the proven solution when cost effective high performance gas flow control is the goal. The 100 Series Mass Flow Meters are available for applications where flow measurement only is required.

SPECIFICATIONS
Flow Capacity
Please consult factory
Response Time (per SEMI E17-91 Settling Time)
1 to 2 Seconds
Accuracy and Linearity
±1% full scale
Repeatability
Within ±0.2% full scale at any constant temperature within operating temperature range
Rangeability (Control Range)
50; 1 (2%-100% full scale) (accuracy and control)
Ambient and Operating Temperature Range
-10 to 70 °C ( ±14 to 158 °F)
Maximum Operating Pressure
3000 PSIG
Temperature Coefficent (per SEMI E18-91 Zero Effect and Span Effect)
±0.05% full scale / °C of zero ±0.05% of reading/ °C of span
Mounting Orientation
Attitude insensitive

Warm-up Time
10 minutes
External Electrical Connector
Nine (9)- pin Dconnector
Weight (approximate)
4.1 lbs
Power Supply Requirements
(Current consumption <250 mAdc):
Voltage output models: +12 (±5%) (0-5 Vdc & 1-5 Vdc flow signal outputs only) or +15 (±10%) Vdc
Current loop models: +15 (±5%) or +24 (±15%) Vdc
Setpoint Input/Flow Signal Output
0-5 Vdc / 0-5 Vdc (2K ohm minimum load resistance)
0-10 Vdc / 0-10 Vdc (3K ohm minimum load resistance)
1-5 Vdc / 1-5 Vdc (2K ohm minimum load resistance)
4-20 mAdc / 4-20mAdc (refer to load resistance values below)
1-5 Vdc / 4-20 mAdc (refer to load resistance values below)
Load resistance values for 4-20 mAsc flow signal output
0-450 ohm for 6.5-15 Vdc loop supply voltage
200-750 ohm for 15-30 Vdc loop supply voltage

MATERIALS OF CONSTRUCTION
Body
316 Stainless Steel
Sensor Assembly
316L Stainless Steel
Orifice
316 Stainless Steel
Valve Components (Wetted)
302 Stainless Steel, 316 Stainless Steel, and Sandvik® 1802
Elastomers (O-rings and Valve Seat)
Buna N or Viton®
Process Connections
316 Stainless Steel

Sandvik® - AB Sandvik Materials Technology
Kalrez®, Viton® - DuPont Dow Elastomers L.L.C.
Specifications subject to change

ORDERING INFORMATION
To order, please specify
• Model number
• Type of output signal
• Elastomer material
• Process connection size and type
• Flow capacity
• Gas type
• Operating temperature
• Inlet (supply) pressure
• Outlet pressure
• Calibration standard (i.e. 0°C, 20°C, 21.1°C or 25°C)
• Additional accessories required