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Foxboro IGP10-A22D1F I/A Series Electronic Gauge Pressure Transmitter

The Foxboro IGP10-A22D1F, also cataloged as the IGP10 Electronic Gauge Pressure Transmitter, operates as a dedicated hardware component for gauge pressure measurement within I/A Series platforms.

Hardware Specifications

Parameter Specification
Model IGP10-A22D1F
Brand Foxboro (Schneider Electric)
Origin USA
Weight 1.5 kg
Dimensions Standard cylindrical industrial transmitter footprint
Operating Temp -40 to +85 deg C
Power Consumption Loop-powered via 12.5 to 42 VDC supply lines
Output Signal 4-20 mA DC analog current loop
Calibrated Range 0 to 25 PSI
Maximum Working Pressure 300 PSI
Diaphragm Material 316L Stainless Steel
Wetted Parts Material Cobalt-Nickel-Chromium (Co-Ni-Cr) alloy
Process Connection 1/2 NPT external thread configuration
Ingress Protection IP66 / NEMA 4X rated enclosure

4-20 mA HART Loop Protocol and Channel-to-Channel Isolation

The instrument utilizes an integrated silicon strain gauge sensor configuration to translate physical process pressure into a stabilized 4-20 mA current loop. The electrical interface architecture is designed to prevent cross-talk and maintain signal purity when routed through external channel-to-channel isolation modules before arriving at the distributed control system (DCS) I/O terminations. This loop design operates continuously over long cable distances without signal attenuation, ensuring precise tracking of the calibrated 0 to 25 PSI span across varying ambient thermal limits.

Frequently Asked Questions

Q: Can the IGP10-A22D1F module configuration be hot-swapped while the 4-20 mA process control loop is active?

A: No. Disconnecting the loop wiring while energized under live conditions will break the current path, resulting in an open-circuit fault indication at the host DCS module interface.

Q: How is the physical process connection scaled to prevent thread leakage under maximum working pressure?

A: The transmitter utilizes a standard 1/2 NPT external thread design. Mechanical execution requires a proper NPT thread engagement following standard industrial thread engagement rules to maintain structural integrity up to the 300 PSI limit.

Field Installation Guidelines

  • Thread the 1/2 NPT process connection directly to the process piping using a calibrated wrench applied strictly to the hex flats of the transmitter base.
  • Ensure all thread engagements meet the required specifications and use approved PTFE sealant tape or industrial pipe dope to eliminate leakage vectors.
  • Route the loop wires through the 1/2 NPT conduit opening using twisted-shielded instrumentation pairs to minimize external electromagnetic interference.
  • Terminate the wire shields at the plant instrument ground bus bar, keeping the shield isolated at the transmitter enclosure housing.
  • Verify the DC supply voltage remains within the strict 12.5 to 42 VDC operating parameters at the transmitter terminal points under full 20 mA loop load conditions.

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