Product Core Brief

• Model: 8101-HI-TX-02
• Brand: GE
• Series: GE PAC8000 Modular I/O
• Core Function: 8-channel 4–20 mA analog input module with HART pass-through for PAC8000 and Mark VI-related control systems.
• Product Type: Analog Input Module
• Key Specs: 8 single-ended 4–20 mA channels | HART pass-through | 16-bit resolution | 2-wire/4-wire transmitter support | Open/short detection | 24 VDC field power
• Condition: New Original / New Surplus

Key Technical Specifications

• Part Number: 8101-HI-TX-02
• Product Family: GE PAC8000 Modular I/O
• Channel Count: 8 single-ended analog inputs
• Signal Type: 4–20 mA
• Full Signal Range: 1–23 mA
• Fault Detection: Short-circuit > 23.5 mA; open-circuit < 0.5 mA
• Resolution: 16-bit
• Accuracy: ±0.1% of range
• Repeatability: 0.05% of range
• Response Time: 27 ms max for 4–20 mA; 0.75 s per channel in HART mode
• HART Function: HART pass-through, HART variable and status reporting
• Transmitter Support: 2-wire and 4-wire transmitters
• Isolation: Channel-to-backplane bus 100 VAC; no channel-to-channel isolation
• Power: Requires 24 VDC field power; backplane bus current 100 mA typical, 150 mA max
• System Compatibility: PAC8000 I/O racks; referenced as a Mark VI system spare in some listings
• Typical Applications: Process analog input acquisition, transmitter integration, HART device monitoring, and legacy GE control system I/O expansion

 

Product Introduction (No Fluff)

The GE 8101-HI-TX-02 is an 8-channel 4–20 mA analog input module from the PAC8000 modular I/O family. It accepts up to eight single-ended current inputs, supports 2-wire and 4-wire transmitters, and provides HART pass-through for device configuration and status monitoring.

This module is typically used where process transmitters, pressure/temperature/flow sensors, or analog field devices must be integrated into a GE PAC8000 or related control platform. With 16-bit resolution and built-in open/short detection, it helps maintain measurement accuracy while simplifying field diagnostics. Because it requires 24 VDC field power and connects to a specific PAC8000 backplane, it should only be installed in compatible racks and configured through the supported engineering software.

 

QA & Testing SOP (Dynamic & Transparent)

For an analog input module, we verify identification, physical condition, terminal integrity, and channel readiness before release.

• Part number verification: Confirm 8101-HI-TX-02 on the module label. Record firmware/revision, serial number, and date code.
• Visual inspection: Check the module housing, terminal block, backplane connector, LEDs, and PCB for corrosion, burn marks, or mechanical damage.
• Terminal inspection: Verify screw terminals or plug-in connectors are intact, properly aligned, and free of oxidation.
• Backplane connector check: Inspect the rack connector pins for bending, contamination, or poor contact.
• Power and LED check: Where a compatible test rack is available, apply 24 VDC field power and verify module status LEDs.
• Channel verification: Apply a known 4–20 mA source to selected channels and confirm the module reports correct values.
• HART pass-through check: If HART devices are available, verify HART communication is detectable on configured channels.
• ESD-safe packaging: Ship in anti-static bags with foam protection. Include part number and inspection status on the label.

Installation Pitfalls & Guide (Engineer to Engineer)

❗ This is a 4–20 mA input module. Do not connect voltage-only signals unless the transmitter and wiring are verified for current-loop operation.

❗ 24 VDC field power is required. The module needs external 24 VDC field power for transmitter loops. Missing or incorrect field power will cause open-loop faults or incorrect readings.

❗ Check 2-wire vs 4-wire wiring. Incorrect wiring can prevent the transmitter from powering up or cause measurement errors. Verify loop polarity and field terminal assignments.

❗ HART pass-through is not full HART master functionality. The module supports HART pass-through and variable/status reporting, but HART configuration capability depends on the host system and software.

❗ Confirm rack compatibility. The 8101-HI-TX-02 belongs to the PAC8000 I/O family. Do not force it into incompatible racks or mix it with unrelated GE I/O families without verifying mechanical and electrical compatibility.

Replacement steps:

1. Pre-install: Record channel assignments, transmitter types, HART addresses, scaling, and alarm limits.
2. Isolate: De-energize field loops or isolate affected transmitters before disconnecting wiring.
3. Remove: Release the module from the rack without forcing the backplane connector.
4. Install: Seat the replacement 8101-HI-TX-02 firmly, restore field wiring, and verify 24 VDC field power.
5. Commission: Verify channel readings, check open/short status, test HART pass-through if required, and confirm host system scaling.

 

Technical FAQ

What does 8101-HI-TX-02 do?
It provides eight 4–20 mA analog input channels with HART pass-through for GE PAC8000 and related control systems.

Can it connect to HART transmitters?
Yes. It supports HART pass-through and HART variable/status reporting, but actual HART configuration depends on the host controller and software.

Does it support 0–10 V or other voltage inputs?
This module is specified for 4–20 mA current inputs. Voltage input capability should not be assumed without OEM documentation.

Is it compatible with Mark VI systems?
Some listings reference it as a Mark VI system spare, but it is primarily a PAC8000 I/O module. Compatibility should be verified against the installed control platform.

Does it provide channel-to-channel isolation?
No. It provides channel-to-backplane bus isolation, but there is no channel-to-channel isolation.