Product Description
Foxboro 11AH-BS2 Pneumatic Absolute Pressure Transmitter
Product Overview
- The Foxboro 11AH-BS2 is a Pneumatic Absolute Pressure Transmitter designed by Foxboro, now part of Schneider Electric, for the 11AH series. This transmitter measures absolute pressure and converts it into a standard pneumatic output signal for use with pneumatic receivers, controllers, or recorders. It is used in industrial applications, such as chemical processing, oil and gas, and power generation, for precise monitoring of absolute pressure in processes involving gases, vapors, or liquids.
Technical Specifications
- The 11AH-BS2 has the following specifications based on industry sources:
| Specification | Details |
|---|---|
| Model/Part Number | 11AH-BS2 |
| Manufacturer | Foxboro (by Schneider Electric) |
| Description | Pneumatic Absolute Pressure Transmitter, High Pressure Range |
| Series | 11AH |
| Function | Measures absolute pressure and transmits a proportional pneumatic signal |
| Span Limits | 0.14 to 1.4 MPa (20 to 200 psi) |
| Range Limits | 0 to 2.4 MPa (0 to 350 psi) |
| Maximum Overrange Pressure | 2.4 MPa (350 psi) |
| Output Signal | 20 to 100 kPa, 3 to 15 psi, or 0.2 to 1.0 bar or kg/cm² (as specified) |
| Supply Pressure | 140 kPa (20 psi) |
| Air Consumption | 0.42 m³/h (0.25 cfm) at standard conditions |
| Accuracy | ±0.5% of span |
| Hysteresis | 0.15% of calibrated span |
| Maximum Process Temperature | 120°C (250°F) at capsule |
| Ambient Temperature Limits | -40°C to +120°C (-40°F to +250°F) |
| Wetted Parts Materials | Capsule Diaphragm: AISI 316L stainless steel or Monel Other Capsule Parts: 316 stainless steel or Monel Force Bar: 316 stainless steel or Monel Force Bar Seal: Cobalt-nickel Capsule Gasket: Silicone elastomer Process Connector Gasket: PTFE |
| Body Material | AISI 316 stainless steel or Monel |
| Body Bolting | Alloy steel per ASTM A193 Grade B7 |
| Cover Material | High-impact, glass-filled polycarbonate |
| Process Connection | 1/2 NPT, 1/2 metric, or machined for 9/16-18 Aminco fitting |
| Air Connections | 1/4 NPT for supply and output |
| Mounting | Bracket for nominal DN 50 or 2-inch pipe (vertical or horizontal) |
| Enclosure Classification | IEC IP53, NEMA Type 3 |
| Environmental Specifications | Operating Temperature: -40°C to +120°C (-40°F to +250°F) Storage Temperature: -40°C to +120°C (-40°F to +250°F) Relative Humidity: 5% to 95% non-condensing |
| Dimensions | Approx. 200 mm (H) x 150 mm (W) x 100 mm (D) |
| Weight | Approx. 4.5 kg (10 lb) |
| Certifications | CE, complies with applicable industrial standards |