Description
Note: Many products are not yet listed. Please contact us for more product information. Our supply channels are constantly expanding, and we currently have 20 stable shared supply channels. Please confirm the model, product, price, and all other necessary information with customer service before placing an order. We offer new, refurbished, and used products, and prices are adjusted according to the year of the item you require.
3. Product Introduction (Anti-Template)
Safety loops still depend on clean, supervised analog inputs from process transmitters. The 8810-HI-TX brings eight of those 4–20 mA signals into a PAC8000 or SafetyNet system while passing HART data and continuously checking for open or shorted field wiring.
It mounts on the standard carrier, supports 2-, 3-, or 4-wire transmitters, and is certified for use in SIL 2 applications and Class I Division 2 locations. Plants that standardized on the PAC8000 platform keep this module on the critical-spares list because a failed safety analog input can force a process unit into a restricted or shutdown state until a replacement is installed.
8810-HI-TX
8810-HI-TX
8810-HI-TX
8810-HI-TX
8810-HI-TX
4. Key Technical Specifications
| Parameter | Value |
|---|---|
| Number of Channels | 8 single-ended |
| Input Signal | 4–20 mA nominal (0.25–24 mA full span) |
| Transmitter Support | 2-, 3-, or 4-wire |
| Resolution | 16-bit |
| Accuracy | ±0.1 % of span at 25 °C |
| Update Rate | 25 ms per channel (analog); ≈0.75 s per point (HART) |
| HART Capability | Pass-through, acquisition, and status reporting |
| System Current | 70 mA max |
| Field Current (2-wire) | 350 mA max |
| Fault Detection | Open <0.5 mA; Short >23.5 mA |
| Safety Rating | SIL 2 capable |
| Hazardous Location | Class I, Division 2; non-incendive field circuits |
| Operating Temperature | –40 °C to +70 °C (typical) |
5. Field Application & Technical Pitfalls (The Engineer’s Guide)
This module is commonly used on safety instrumented systems that monitor pressure, level, flow, or temperature transmitters in oil & gas, chemical, and power applications. HART pass-through allows asset-management software to reach the field devices without additional multiplexers.
Three pitfalls appear during replacement:
Field power sourcing – 2-wire transmitters draw power from the module’s bus field supply (typically an 8914-PSAC or equivalent); insufficient or missing field power produces open-circuit faults.
Carrier and keying mismatch – the module must be installed on the correct PAC8000 carrier with proper mechanical keying; forced insertion can damage the railbus connector.
HART and filtering configuration – incorrect HART enable or filter settings can slow updates or mask genuine process changes.
One plant replaced a module and immediately saw multiple open-circuit alarms. The field power supply had been left offline after maintenance; restoring the 24 V field rail cleared the faults and returned the loops to normal operation.
6. Quality Control (QC) SOP & Transparency
- Inbound Verification – OEM labeling, serial number, and date codes are photographed and checked against the packing list; any signs of prior field use are noted.
- Live Rig Testing – module is installed on a known-good PAC8000 carrier, powered, and exercised with calibrated 4–20 mA sources and HART communication on multiple channels.
- Parameter Testing – accuracy, line-fault detection thresholds, and HART status reporting are verified; system and field current draws are measured.
- Final QA & Packaging – unit is sealed in an anti-static bag with desiccant, fitted with a QC-passed label showing test date and technician ID, then double-boxed for shipment.
7. Frequently Asked Questions (FAQ)
Does the 8810-HI-TX support HART communication?
Yes. It provides HART pass-through, acquisition, and status reporting on the analog channels.
Can it power 2-wire transmitters?
Yes. Field power is supplied from the bus field power rail (typically 24 V DC). Maximum field current is approximately 350 mA for 2-wire transmitters.
What safety integrity level does it support?
It is certified for use in SIL 2 applications when applied according to the safety manual.
Is the module hot-swappable?
Yes, in accordance with PAC8000 guidelines and hazardous-area restrictions (Class I Div 2 / Zone 2).
What warranty comes with a new-surplus unit?
Twelve months from shipment against defects in materials and workmanship when installed within the published ratings.
How do I confirm the module is healthy after installation?
Apply system and field power, verify module status LEDs, inject known 4 mA and 20 mA signals on each channel, confirm HART communication where used, and check that open- and short-circuit detection functions correctly.
