Honeywell TK-OAH061 Conformal Coated DCS AO 0-21mA
Manufacturer: Honeywell
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Part Number: TK-OAH061
Condition：New with Original Package
Product Type: Analog Output Modules, Honeywell Experion PK
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Country of Origin: USA
Payment:T/T, Western Union
Shipping port: Xiamen
Warranty: 12 months
Product Overview
The Honeywell TK-OAH061 serves as a precision analog output interface for Experion Process Knowledge System (PKS) Distributed Control Systems. This module generates accurate current signals to manage critical control loops in chemical processing, refining, and power generation. Unlike standard versions, the "TK" prefix designates a conformal coated module, providing a robust barrier against moisture, dust, and corrosive airborne contaminants. We supply this unit as 100% brand new and original, ensuring long-term signal stability for mission-critical actuators and valves.
Technical Specifications
| Parameter | Specification Details |
| Model Number | TK-OAH061 |
| Module Type | Analog Output (AO) |
| Channels | 6 Galvanically Isolated Channels |
| Output Range | 0 to 21.0 mA (Supports standard 4–20 mA) |
| Resolution | 13 Bits across 21 mA range |
| Global Update Rate | 25 ms (all channels) |
| Isolation Voltage | 2546 VDC (Channel-to-Channel & User-to-System) |
| RFI Immunity | < 2.0% error at 10 V/m (27–1000 MHz) |
| Overvoltage Protection | 24 VAC/VDC Continuous |
| Power Dissipation | 6.7 W Maximum |
| Coating Type | Conformal Coating (Enhanced protection) |
| Terminal Block | TC-TBNH (20-position) |
Engineering Advantages
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Corrosive Atmosphere Resistance: The factory-applied conformal coating shields internal circuitry from chemical vapors and humidity. This prevents dendritic growth and board-level corrosion, significantly reducing the risk of premature failure in "Class G3" harsh environments like paper mills or wastewater plants.
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High-Integrity Galvanic Isolation: Tested at 2546 VDC, the module's isolation prevents hazardous ground loops and cross-channel interference. This architecture protects the core DCS processor and adjacent modules from field-side electrical surges.
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Precision Actuation Control: The 13-bit DAC resolution translates digital logic into smooth, high-fidelity analog currents. This enables micro-adjustments for control valves, ensuring the process remains within tight setpoint tolerances.
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Ruggedized Signal Stability: Integrated RFI immunity ensures the module remains accurate even when located near variable frequency drives (VFDs) or heavy motors. It maintains an error rate below 2.0% despite electromagnetic interference up to 1000 MHz.
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Rapid Loop Synchronization: The 25 ms global update rate synchronizes all six channels simultaneously. This provides the deterministic timing required for complex cascade control loops and high-speed process synchronization.
FAQs
Q: What is the primary benefit of the "TK" model over the standard "TC" model?
A: The "TK" model (TK-OAH061) features conformal coating on the internal PCBs. This specialized coating protects the module from moisture, salt spray, and corrosive gases, whereas the standard TC-OAH061 is typically used in clean, climate-controlled environments.
Q: Can I use the TK-OAH061 to replace an existing standard module?
A: Yes. The TK-OAH061 is physically and functionally compatible with the standard TC-OAH061. It fits the same rack slots and utilizes the TC-TBNH 20-position terminal block, providing a more durable upgrade for existing systems.
Q: Does the module protect itself against accidental field wiring errors?
A: Absolutely. The TK-OAH061 includes continuous 24 VAC/VDC overvoltage protection on all output channels. This hardware-level protection prevents damage if field technicians inadvertently connect a live power source to the output pins.
Q: Is this module a new production unit?
A: We provide only 100% brand new, original factory units. Each TK-OAH061 includes a standard 12-month warranty and arrives in original Honeywell packaging with complete factory certifications.