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1794-IF8IH | Allen-Bradley FLEX I/O 8-Channel Isolated HART Analog Input Module
- Regular price
- $1,649.00
- Sale price
- $1,649.00
- Regular price
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Product Description P/N: 1794-IF8IH
Description
The Allen-Bradley 1794-IF8IH is an 8-channel HART-compatible analog input module for the FLEX I/O platform. It provides isolated, single-ended input channels with Sigma-Delta conversion for precise signal acquisition. The module supports both unipolar and bipolar resolutions and operates from an external 19.2–31.2 VDC supply.
Technical Specifications
| Condition | New/Never Used Surplus |
| Brand | Allen-Bradley |
| Category | Analog Input Module |
| Part Number | 1794-IF8IH |
| Subcategory | FLEX I/O Module |
| Series | FLEX I/O 1794 |
| Inputs | 8 isolated, single-ended |
| Output Channels | None |
| Input Type | Single-ended, isolated (HART-compatible) |
| Conversion Method | Sigma-Delta |
| Resolution | 16-bit unipolar; 15-bit + sign bipolar |
| External Supply Voltage | 19.2–31.2 VDC |
| Flexbus Current | 80 mA @ 5 VDC |
| Power Dissipation | 4.8 W @ 31.2 VDC max |
| Thermal Dissipation | 16.4 BTU/hr @ 31.2 VDC max |
| Operating Temperature | 32–131 °F (0–55 °C) |
| Enclosure Type | Open |
| Dimensions | 3.7 × 3.7 × 2.6 in |
| Compatible Terminal Bases | 1794-TB3, 1794-TB3S |
| Wiring Requirements | Shielded wire; Category 2 (signal), Category 3 (power) |
Information About 1794-IF8IH
The 1794-IF8IH is part of the Allen-Bradley FLEX I/O 1794 family and is designed to interface with HART-enabled analog field devices. Its isolated single-ended inputs improve signal integrity in electrically noisy industrial environments, making it suitable for process applications requiring accurate analog measurement. The module mounts on 1794-TB3 or 1794-TB3S terminal bases and uses Sigma-Delta conversion to deliver 16-bit unipolar and 15-bit-plus-sign bipolar resolution. Typical uses include monitoring transmitters and instrumentation where digital HART data and analog values coexist, supported by factory calibration and optional field calibration when needed.
Key Features:
- Eight Isolated Input Channels: Ensures improved signal integrity and noise immunity.
- HART-Compatible Inputs: Supports communication with HART-enabled process transmitters.
- Sigma-Delta Conversion: Provides high-resolution unipolar (16-bit) and bipolar (15-bit + sign) measurements.
- Wide Supply Range: Operates from 19.2–31.2 VDC with 5% ripple tolerance.
- Flexbus Integration: Consumes only 80 mA from the 5 VDC backplane.
- Compatible Terminal Bases: Designed for use with 1794-TB3 and 1794-TB3S bases.
- Factory Calibrated: Supports optional field calibration for specialized applications.
- Open-Type Enclosure: Suitable for protected industrial environments with defined wiring categories.
The 1794-IF8IH delivers the reliability and precision required for high-performance HART analog signal acquisition in FLEX I/O process automation systems.
Description
The Allen-Bradley 1794-IF8IH is an 8-channel HART-compatible analog input module for the FLEX I/O platform. It provides isolated, single-ended input channels with Sigma-Delta conversion for precise signal acquisition. The module supports both unipolar and bipolar resolutions and operates from an external 19.2–31.2 VDC supply.
Technical Specifications
| Condition | New/Never Used Surplus |
| Brand | Allen-Bradley |
| Category | Analog Input Module |
| Part Number | 1794-IF8IH |
| Subcategory | FLEX I/O Module |
| Series | FLEX I/O 1794 |
| Inputs | 8 isolated, single-ended |
| Output Channels | None |
| Input Type | Single-ended, isolated (HART-compatible) |
| Conversion Method | Sigma-Delta |
| Resolution | 16-bit unipolar; 15-bit + sign bipolar |
| External Supply Voltage | 19.2–31.2 VDC |
| Flexbus Current | 80 mA @ 5 VDC |
| Power Dissipation | 4.8 W @ 31.2 VDC max |
| Thermal Dissipation | 16.4 BTU/hr @ 31.2 VDC max |
| Operating Temperature | 32–131 °F (0–55 °C) |
| Enclosure Type | Open |
| Dimensions | 3.7 × 3.7 × 2.6 in |
| Compatible Terminal Bases | 1794-TB3, 1794-TB3S |
| Wiring Requirements | Shielded wire; Category 2 (signal), Category 3 (power) |
Information About 1794-IF8IH
The 1794-IF8IH is part of the Allen-Bradley FLEX I/O 1794 family and is designed to interface with HART-enabled analog field devices. Its isolated single-ended inputs improve signal integrity in electrically noisy industrial environments, making it suitable for process applications requiring accurate analog measurement. The module mounts on 1794-TB3 or 1794-TB3S terminal bases and uses Sigma-Delta conversion to deliver 16-bit unipolar and 15-bit-plus-sign bipolar resolution. Typical uses include monitoring transmitters and instrumentation where digital HART data and analog values coexist, supported by factory calibration and optional field calibration when needed.
Key Features:
- Eight Isolated Input Channels: Ensures improved signal integrity and noise immunity.
- HART-Compatible Inputs: Supports communication with HART-enabled process transmitters.
- Sigma-Delta Conversion: Provides high-resolution unipolar (16-bit) and bipolar (15-bit + sign) measurements.
- Wide Supply Range: Operates from 19.2–31.2 VDC with 5% ripple tolerance.
- Flexbus Integration: Consumes only 80 mA from the 5 VDC backplane.
- Compatible Terminal Bases: Designed for use with 1794-TB3 and 1794-TB3S bases.
- Factory Calibrated: Supports optional field calibration for specialized applications.
- Open-Type Enclosure: Suitable for protected industrial environments with defined wiring categories.
The 1794-IF8IH delivers the reliability and precision required for high-performance HART analog signal acquisition in FLEX I/O process automation systems.